3-864-987-22 (1)

Portable MiniDisc Recorder

Operating instructions

MZ-R55

1998 by Sony Corporation

WARNING
To prevent fire or shock hazard, do not expose the unit to rain or moisture. To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel only.

Caution

The use of optical instruments with this product will increase eye hazard.
You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. The built-in battery should be replaced by qualified personnel only.
For Customers in Australia
If the supply cord of the AC power adaptor is damaged, the AC power adaptor must be returned to the manufacturer or his agent for the cord to be replaced.
For the customers in the USA DISPOSAL OF NICKEL METAL HYDRIDE BATTERY
NICKEL METAL HYDRIDE BATTERY. DISPOSE OF PROPERLY. You can return your unwanted nickel metal hydride batteries to your nearest Sony Service Center. Note: In some areas the disposal of nickel metal hydride batteries in household or business trash may be prohibited. For the Sony Service Center nearest you call 1-800-222-SONY (United States only) Caution: Do not handle damaged or leaking nickel metal hydride battery. IN NO EVENT SHALL SELLER BE LIABLE FOR ANY DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE, OR LOSSES OR EXPENSES RESULTING FROM ANY DEFECTIVE PRODUCT OR THE USE OF ANY PRODUCT.
Information For Customers in the USA
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.

Owner's Record

The serial number is located at the rear of the disc compartment lid and the model number is located at the top and bottom. Record the serial number in the space provided below. Refer to them whenever you call upon your Sony dealer regarding this product. Model No. MZ-R55 Serial No. "MD WALKMAN" is a trademark of Sony Corporation.

Welcome!

Welcome to the world of the MiniDisc! Here are some of the capabilities and features you'll discover with the new MiniDisc Recorder. Recording MD Walkman in an ultracompact body Almost as small as a playback-only MD Walkman; easy to carry in your pocket or bag. Low power consumption design Runs on a single chewing gum type rechargeable battery. Simultaneous labeling feature No more waiting for the recording to end; you can label tracks and discs while the MD is being recorded. 9-letter, backlit LCD remote control with editing capabilities You can now label tracks and discs, change track sequence, etc., with the easy-tooperate stick remote control. Shock-resistant memory Offsets up to 40 seconds of optical read errors. High-fidelity recording Low-noise, low-distortion, high-fidelity recording through the optical digital input jack. Digital synchro-recording When recording from a digital equipment with optical output, the recorder automatically starts and pauses recording in sync with operation on the digital source. Sampling rate converter This unit enables you to record programs from digital equipment using other sampling rates, such as a BS tuner or DAT deck. Digital AGC (Auto Gain Control) Automatic recording level adjustment without sacrificing superb digital sound. Long-time recording with monaural sound You can record up to 148 minutes on a disc using monaural recording. Date and time stamp function The built-in clock automatically records the date and time whenever you make a recording.

Playing an MD right away!
To use the recorder on a rechargeable battery or dry batteries, see Power Sources (pages 27, 28).
to a wall outlet to 2/REMOTE AC power adaptor (supplied)
Headphones with a remote control (supplied)
Wear the earpiece marked R in your right ear and the one marked L in your left ear.

to DC IN 3V

2 Insert an MD.
2 Insert an MD with the label side facing up, and press the lid down to close.

3 Play an MD.

VOLUME +/ 1 Press ( (Turn the control to (+ on the remote control).
A short beep sounds in the headphones when you operate on the remote control.

( p VOL +/ p

To Pause Find the beginning of the current track
2 Press VOLUME (VOL on the remote control) +/ to adjust the volume.
The volume will be shown in the display.

To stop play, press p.

A long beep sounds in the headphones when you operate on the remote control.
Press (Beeps in the headphones) P (Continuous short beeps) Press P again to resume play. = once (Turn the control to = on the remote control) (Three short beeps) + once (Turn the control to (+ on the remote control) (Two short beeps) keep pressing = (Turn and hold the control to = on the remote control) keep pressing + (Turn and hold the control to (+ on the remote control) p and open the lid.2)
Find the beginning of the next track
Go backwards while playing1) Go forward while playing1) Remove the MD
To go backward or forward quickly without listening, press P and keep pressing = or +. Once you open the lid, the point to start play will change to the beginning of the first track.
If the play does not start
Make sure the recorder is not locked (page 20).
The sound may skip during playback when the recorder is exposed to continuous vibration, such as while jogging. If the power supply is disrupted (i.e. the battery is removed or becomes exhausted or the AC power adaptor is disconnected) when the recorder is operating, the lid may not open until the power is restored.
When using optional headphones
Use only headphones with stereo mini plugs. You cannot use headphones with micro plugs.
Playback will switch automatically between stereo and monaural according to the sound source.

You can make a digital recording only from an optical type output. When recording from a portable CD player, play it on AC power and disable the anti-skip function (such as ESP*). Digital output may be disabled on some portable CD players when the player is not run on AC power. * Electronic Shock Protection
To start/stop recording in sync with the source player (Synchro-recording)
You can easily make digital recordings of a digital source on an MD. Before synchro-recording, make connections to the digital source with a digital cable, and insert a recordable MD. CD players, etc. SYNCHRO REC
POC-5B etc. (not supplied) POC-5AB etc. (not supplied)
p Slide SYNCHRO REC to ON. SYNC appears in the display.
Insert a recordable MD and start recording. For recording operations, see Recording an MD right away ! (page 6). To record from a portable CD player, set the CD player to pause and then start recording.
Press and slide REC to the right. The recorder stands by for recording. Play the source sound. The recorder starts recording when it receives the playing sound.
LINE IN (OPTICAL) jack is for both digital and analog input
The recorder automatically recognizes the type of line cable and switches to digital or analog input.

continued

To stop recording, press p.
You cannot pause manually during synchro-recording. When there is no sound from the player for more than 3 seconds during synchrorecording, the recorder goes into the standby mode automatically. When the sound comes from the player again, the recorder resumes synchro-recording. If the recorder is kept in the standby mode for 5 minutes or longer, the recorder stops automatically.
Recording from a microphone
Connect a stereo microphone (ECM-717, ECM-MS907, ECM-MS957, etc.; not supplied) to the MIC (PLUG IN POWER) jack.
Stereo microphone to MIC (PLUG IN POWER)
Do not switch SYNCHRO REC after step 2. Recording may not be done properly. When recording in monaural, follow steps 1 and 2 of Recording in monaural for double the normal recording time (page 13) before synchro-recording. Even when there is no recorded sound on the sound source, there may be cases when recording does not pause automatically during synchro-recording due to the noise level emitted from the sound source.

MIC SENS (at the bottom)

Select the sensitivity with MIC SENS (at the bottom of the recorder). Usually, set it to HIGH. When recording loud sounds such as a live concert, set it to LOW. Insert a recordable MD and start recording. Press and slide REC to the right. REC lights up and recording starts. For other operations, see Recording an MD right away! (page 6).

zVarious ways of playback Playing tracks repeatedly
You can play tracks repeatedly in three ways all repeat, single repeat, and shuffle repeat. MODE
Indication none (normal play) f (all repeat) f 1 (single repeat) f SHUF (shuffle repeat)
Play mode All the tracks are played once. All the tracks are played repeatedly. A single track is played repeatedly. All the tracks are played repeatedly in random order.

PLAY MODE

Press MODE (PLAY MODE on the remote control) while the recorder is playing an MD. Each time you press the button, the play mode indication changes as follows. Ex; Display on the main unit

Play mode indication

Emphasizing bass (DIGITAL MEGA BASS)
Mega Bass function intensifies low frequency sound for richer quality audio reproduction. It affects only the sound from the headphones.
Protecting your hearing (AVLS)
The AVLS (Automatic Volume Limiter System) function keeps down the maximum volume to protect your ears. AVLS

DIGITAL MEGA BASS

Press DIGITAL MEGA BASS. Each time you press DIGITAL MEGA BASS, the Mega Bass indication changes as follows. Mega Bass indication
Set AVLS at the bottom of the recorder to LIMIT. When you try to turn the volume too high, AVLS appears in the display. The volume is kept to a moderate level.
Indication none BASS BASS
Play mode Normal play Mega Bass (moderate effect) Mega Bass (strong effect)
If the sound becomes distorted when emphasizing bass, turn down the volume. Mega Bass function does not affect the sound being recorded. Mega Bass does not function when a line cable is connected to the LINE OUT jack on the recorder.
Checking the remaining time or the playing position
You can check the track name, disc name, etc. during playback.
Press DISPLAY while playing. Each time you press DISPLAY, the display changes as follows.
Press DISPLAY while playing. Each time you press DISPLAY, the display changes as follows. A
Track number Track number The number of tracks in the disc
Elapsed time Track name1) Disc name1) Recorded time2)
Track number Track name Disc name1)
Elapsed time Remaining time of the current track Remaining time after the current location Recorded time2)
If you want to check the remaining time or the recording position while recording or in stop mode, see page 14.

Recorded date2)

Locking the controls (HOLD)
To prevent the buttons from being accidentally operated when you carry the recorder, use this function. HOLD
Connecting to a stereo system

Connect the LINE OUT jack of the recorder to the LINE IN jacks of an amplifier or a tape player with a line cable (RK-G129 or RK-G136, not supplied). The output is analog. The recorder plays the MD digitally and sends analog signals to the connected equipment. Portable DAT recorder Stereo system, etc. 2 phono plugs Stereo mini-plug R (red) L (white) RK-G129 (not supplied)

to LINE IN

HOLD RK-G136 (not supplied)
Slide HOLD in the direction of the c. On the recorder, slide HOLD to lock the controls of the recorder. On the remote control, slide HOLD to lock the controls of the remote control. Slide HOLD in the opposite direction of the arrow to unlock the controls.

to LINE OUT Note

The Mega Bass does not function or will be cancelled when the LINE OUT jack is connected with a line cable.

zEditing recorded tracks

You can edit your recordings by adding/ erasing track marks or labeling tracks and MDs. Premastered MDs cannot be edited. Notes on editing
Do not move or jog the recorder while Toc Edit* is flashing in the display. You cannot edit tracks on an MD that is record-protected. Before editing tracks, close the tab on the side of the MD. *TOC = Table of Contents

To erase the whole disc

You can quickly erase all the tracks and data of the MD at the same time. Note that once a recording has been erased, you cannot retrieve it. Be sure to check the contents of the disc you want to erase. EDIT/ENTER =+

Erasing tracks

To erase a track
Note that once a recording has been erased, you cannot retrieve it. Make sure of the track you are erasing. EDIT/ENTER =+ T MARK
Press EDIT/ENTER on the recorder. Press = or + repeatedly until : Erase flashes in the display. Press EDIT/ENTER again. All Erase? and Push ENTER appear alternately in the display. To cancel erasing, press p or T MARK. Press EDIT/ENTER again. Toc Edit flashes in the display, and all the tracks will be erased. When erasing is complete, BLANK DISC appears in the display.

T MARK

Press EDIT/ENTER while playing the track you want to erase. : Name flashes in the display, and the recorder plays the selected track repeatedly. Press = or + repeatedly until : Erase flashes in the display. Press EDIT/ENTER again. Erase OK? and Push ENTER appear alternately in the display. To cancel erasing, press p or T MARK.
To erase a part of a track
Add track marks at the beginning and the end of the part you want to erase, then erase the part.

Adding a track mark

You can add track marks so that the part after the new track mark is counted as a new track. The track numbers will increase as follows. 1. Track marking 5

Erasing a track mark

When you record with analog (line) input, unnecessary track marks may be recorded where recording level is low. You can erase a track mark to combine the tracks before and after the track mark. The track numbers will change as follows. 1. 4 Erase a track mark 2 3

Labeling recordings

You can name tracks during playback, discs during stop, and both during recording. Each name can be as long as 200 letters. Each disc can hold up to 1700 alphanumeric letters during playback or stop, and 500 alphanumeric letters during one recording.

Press P

To Switch between capital letters, small letters, and marks / numbers.
VOLUME +/ Move the cursor to the left or right. =/+ DISPLAY MODE Change the letter to the one before / next one. Insert a blank space to type in a new letter. Delete a letter and move back all following letters to the left. Cancel labeling. Cancel labeling.
MODE DISPLAY =+ EDIT/ENTER

p T MARK

p ( P VOLUME +/ T MARK
Repeat step 4 and enter all characters of the label name. Press EDIT/ENTER. The track or disc is labeled.
Labeling a track during playback
Insert a disc and play the track you want to label. Press EDIT/ENTER. : Name flashes in the display. Press EDIT/ENTER again. The track is ready to be labeled. Follow steps 4 to 6 of Labeling a disc during stop above.
Labeling a disc during stop
Insert a disc. To label a disc that is already in the recorder, press p to stop. Press EDIT/ENTER. : Name flashes in the display. Press EDIT/ENTER again. The disc is ready to be labeled. Press = or + repeatedly to select a letter and press ( to enter. The selected letter stops flashing and the cursor moves to the next input position.
Labeling a track or a disc during recording
Press EDIT/ENTER during recording. : Name flashes in the display.
To label a track, press EDIT/ENTER again. To label a disc, press = or + repeatedly until : Name flashes in the display, then press EDIT/ENTER. Follow steps 4 to 6 of Labeling a disc during stop above.
DISPLAY PLAY MODE TRACK MARK VOL +/ p P Control
To cancel labeling, press p or T MARK. Note If, while labeling a track or disc during recording, the track or disc comes to the end, or the next track begins, the labeling that is input up to that point is registered automatically.
Insert a disc. To label a disc that is already in the recorder, press p to stop. Press DISPLAY for 2 seconds or more. : Name flashes in the display. Press p. The disc is ready to be labeled. Turn the control to select a letter and press p to enter. The selected letter stops flashing and the cursor moves to the next input position. To Switch between capital letters, small letters, and marks / numbers. Move the cursor to the left or right. Change the letter to the one before / next one. Insert a blank space to type in a new letter. Delete a letter and move back all following letters to the left.

Press/ Turn P

VOL +/ =/(+ DISPLAY PLAY MODE
TRACK MARK Cancel labeling.
Repeat step 4 and enter all characters of the label name. Keep pressing the p for 2 seconds or more. The track or disc is labeled.

Available characters

Capital and small letters of the English alphabet Numbers 0 to 9 ! " # $ % & ( ) *. ; < = > ? @ _ ` + ' , / : _ (space)

To relabel recordings

Follow the steps corresponding to the labeling method until the disc or track is ready to be labeled. Enter a new character over the one you want to change, then press EDIT/ENTER (keep pressing p for 2 seconds or more on the remote control). Notes
You cannot relabel premastered MDs or label MDs that have not been recorded. The recorder is able to display, but cannot label using, Japanese Katakana characters.
Insert a disc and play the track you want to label. Press DISPLAY for 2 seconds or more. : Name flashes in the display. Press p. The track is ready to be labeled. Follow steps 4 to 6 of Labeling a disc during stop above.
Press DISPLAY for 2 seconds or more during recording. : Name flashes in the display. To label a track, press p. To label a disc, turn the control to = or (+ until : Name flashes in the display, then press p. Follow steps 4 to 6 of Labeling a disc during stop above.
To cancel labeling, press TRACK MARK. Note When the recording is stopped while labeling a track or a disc during recording, or when the playback moves on to the next track while labeling a track, the input at that point is entered automatically.

zPower sources

You can use the recorder on house current or as follows. In the recorder a nickel metal hydride rechargeable battery NH-14WM (supplied) With supplied battery case two LR6 (size AA) alkaline batteries (not supplied) It is preferable to use the recorder on house current when recording for a long time.
Press p/CHARGE. charging flashes, n appears in the display, and charging starts.
Charging the nickel metal hydride rechargeable battery
Before using the supplied NH-14WM nickel metal hydride rechargeable battery for the first time, charge it in the recorder.
Full charging of a completely discharged rechargeable battery takes about 3 hours. To cancel charging, press p/CHARGE. Notes
During charging, other operations on the recorder are not possible. Be sure to use the supplied AC power adaptor. Charging time may vary depending on the battery condition. When a rechargeable battery is charged for the first time or charged after a long period of disuse, battery life may be shorter than usual. Repeat discharging and recharging a few times. The battery life should return to normal. When the battery life of a fully charged rechargeable battery becomes about half the normal life, replace it. When carrying the rechargeable battery, keep it in the supplied carrying case. It is dangerous to carry the battery out of its case in your pocket or a bag together with metallic objects such as key rings, as this may cause a short circuit. Remove the rechargeable battery from the recorder when it is not to be used for a long time.

Preventing hearing damage
Avoid using headphones at high volume. Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use.

Caring for others

Keep the volume at a moderate level. This will allow you to hear outside sounds and to be considerate of the people around you.
On the MiniDisc cartridge
When carrying or storing the MiniDisc, keep it in its case. Do not break open the shutter. Do not place the cartridge where it will be subject to light, extreme temperatures, moisture or dust.

On cleaning

Clean the recorder casing with a soft cloth slightly moistened with water or a mild detergent solution. Do not use any type of abrasive pad, scouring powder or solvent such as alcohol or benzene as it may mar the finish of the casing. Wipe the disc cartridge with a dry cloth to remove dirt. Dust on the lens may prevent the unit from operating properly. Be sure to close the disc compartment lid after inserting or ejecting an MD.

On heat build-up

Heat may build up in the recorder if it is used for an extended period of time. In this case, leave the recorder turned off until it cools down.

On installation

Never use the recorder where it will be subjected to extremes of light, temperature, moisture or vibration. Never wrap the recorder in anything when it is being used with the AC power adaptor. Heat build-up in the recorder may cause malfunction or damage.

Notes on batteries

Incorrect battery usage may lead to leakage of battery fluid or bursting batteries. To prevent such accidents, observe the following precautions: Install the + and poles of the batteries correctly. Do not install new and used batteries or different kinds of batteries together. Do not try to recharge dry batteries. When the recorder is not to be used for a long time, be sure to remove the batteries. If a battery leak should develop, carefully and thoroughly wipe away battery fluid from the battery compartment before inserting new ones.
Note on digital recording
This recorder uses the Serial Copy Management System, which allows only first-generation digital copies to be made from premastered software. You can only make copies from a home-recorded MD by using the analog (line out) connections.
CD player, MD player, etc.

Digital recording

Note on mechanical noise
The recorder gives off mechanical noise while operating, which is caused by the power-saving system of the recorder and it is not a problem.

Homerecorded MD

No Recordable digital MD recording

To protect a recorded MD

To record-protect an MD, slide open the tab at the side of the MD. In this position, the MD cannot be recorded. To record again, slide the tab back so the tab is visible. Back of the MD
If you have any questions or problems concerning your recorder, please consult your nearest Sony dealer. (If a trouble occurred when the disc was in the recorder, we recommend that the disc be left in the recorder when you consult your Sony dealer so that the cause of trouble may be better understood.)

Record-protect

Troubleshooting
Should any problem persist after you have made these checks, consult your nearest Sony dealer. Symptom The recorder does not work or works poorly. Cause/Solution Audio sources may not be securely connected. b Disconnect the audio sources once and connect them again (pages 6,11). The HOLD function is turned on (HOLD appears in the display when you press an operation button on the recorder). b Disable HOLD by sliding the HOLD switch in the opposite direction of the arrow (page 20). Moisture has condensed inside the recorder. b Take the MD out and leave the recorder in a warm place for several hours until the moisture evaporates. The rechargeable battery or dry batteries are weak (b or LOW BATT flashes). b Charge the rechargeable battery or replace the dry batteries (pages 27, 28). The rechargeable battery or dry batteries have been installed incorrectly. b Install the batteries correctly (page 27, 28). You pressed a button while the disc indication was rotating quickly. b Wait until the indication rotates slowly. When recording digitally from a portable CD player, you did not use AC power or did not disable the anti-skip function such as ESP (page 11). The analog recording was made using a connecting cord with an attenuator. b Use a connecting cord without an attenuator (page 6). The AC power adaptor was unplugged during recording or a power outage occurred. While operating, the recorder received a mechanical shock, too much static, abnormal power voltage caused by lightning, etc. b Restart the operation as follows. 1 Disconnect all the power sources. 2 Leave the recorder for about 30 seconds. 3 Connect the power source. The disc is damaged or does not contain proper recording or editing data. b Reinsert the disc. If this fails, rerecord.

Repeated recording and erasing may cause fragmentation and scattering of data. Although those scattered data can be read, each fragment is counted as a track. In this case, the number of tracks may reach 254 and further recording is not possible. To continue recording, erase unnecessary tracks. When the data of a track is fragmented, the track mark of a fragment under 12 seconds long cannot be erased. You cannot combine a track recorded in stereo and a track recorded in monaural; nor can you combine a track recorded with digital connection and a track recorded with analog connection. Tracks of under 12 seconds in length are not counted and so erasing them may not lead to an increase in the recording time. Normally, recording is done in minimum units of approximately 2 seconds. When recording is stopped, the last unit of recording always uses this unit of 2 seconds even if the actual recording is shorter. Likewise, when recording is restarted after the stop, the recorder will automatically insert a blank space amounting to 2 seconds before the next recording. (This is to prevent accidental erasing of a previous track whenever a new recording is started). Therefore, the actual recording time will decrease whenever a recording is stopped; a maximum of 6 seconds compared to the potential recording time for each stop. The fragmentation of data may cause sound dropout while searching because the tracks are played in higher speed than normal playback.
The edited tracks may exhibit sound dropout during search operations.

Messages

If the following error messages flash in the display window, check the chart below.
Error message BLANK DISC DISC ERR
Meaning/Remedy An MD with no recording on it is inserted. b Insert a recorded MD. The disc is damaged or does not contain proper recording or editing data. b Reinsert the disc. If this fails, rerecord. There is no more space to record on the disc (less than 12 seconds available). b Replace the disc. The MD player is recording information (sounds) from the memory to the disk. b Wait until this process is completed. Do not expose the player to any physical shock, nor disrupt power supply. The MD player is recording information (track start and end position) from the memory to the disk. b Wait until this process is completed. Do not expose the player to physical shock, nor disrupt power supply. You tried to operate the recorder while it was accessing the recorded data. b Wait until the message goes out (in rare cases, it may take 23 minutes). You tried to enter more than 200 letters to label a single track or disc. You tried to enter a total of more than 1700 letters for track or disc names during playback or stop. You tried to enter a total of more than 500 letters for track or disc names during a single recording. b Enter the characters within the limit. Voltage of the power supply is too high (The supplied AC power adaptor or the recommended car battery cord is not used). b Use the supplied AC power adaptor or the recommended car battery cord. The recorder is locked. b Slide HOLD against the arrow to unlock the recorder (page 20). Batteries are weak. b Charge the rechargeable battery or replace the dry batteries (pages 27, 28). You tried to record when there is no indication in the display, with the recorder placed where it receives continuous vibration. b Put the recorder on a stable place, and start recording again.

DISC FULL

Data Save

Toc Edit

NAME FULL

Hi DC in

HOLD LOW BATT

MEM OVER

Error message NO COPY
Meaning/Remedy You tried to make a copy from a disc that is protected by the Serial Copy Management System. You cannot make copies from a digitally connected source which was itself recorded using digital connection. b Use analog connection instead (page 6). You tried to play or record with no disc in the recorder. b Insert an MD. The recorder could not detect digital input signals. b Make sure that the source is connected firmly (page 11). You tried to record or edit on a premastered MD (P/B stands for playback.) b Insert a recordable MD. You tried to record or edit on a MD with the tab in the recordprotect position. b Slide the tab back (page 30). You tried to erase the track mark at the beginning of the first track. You tried to erase a track mark to combine tracks the recorder cannot combine (a track recorded in stereo and in mono, for example). You tired to press DIGITAL MEGA BASS when the LINE OUT jack is plugged in. You tried to press P or T MARK during synchro-recording. Heat has built up in the recorder. b Let the recorder cool down. There is no more space for new data when you are editing the MD. b Erase unnecessary tracks (page 21). You tried to record or edit on a track that is protected from erasing. b Record or edit on other tracks. You pressed a key on the recorder while editing on the remote control, or vice versa.
NO DISC NO SIGNAL P/B ONLY

PROTECTED

TEMP OVER TR FULL TrPROTECT EDITING

Specifications

System
Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 780 nm Emission duration: continuous Laser output: less than 44.6 W (This output is the value measured at a distance of 200 mm from the lens surface on the optical pick-up block with 7 mm aperture.) Recording and playback time Maximum 74 minutes (MDW-74, stereo recording) Maximum 148 minutes (MDW-74, monaural recording) Revolutions 400 rpm to 900 rpm (CLV) Error correction Advanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency 44.1 kHz Sampling rate converter Input: 32 kHz/44.1 kHz/48 kHz Coding Adaptive TRansform Acoustic Coding (ATRAC) Modulation system EFM (Eight to Fourteen Modulation) Number of channels 2 stereo channels 1 monaural channel Frequency response 20 to 20,000 Hz 3 dB Wow and Flutter Below measurable limit Inputs Microphone: stereo mini-jack, 0.220.78 mV Line in: stereo mini-jack, 69194 mV Optical (Digital) in: optical (digital) mini-jack Outputs Headphones: stereo mini-jack, maximum output level 5 mW+ 5 mW, load impedance 16 ohm Line out: stereo mini-jack, 194 mV, load impedance 10 kilohm

Shock-Resistant Memory

One major drawback of optical read systems is that they can skip or mute when subjected to vibration. The MD system resolves this problem by using a buffer memory that stores audio data.

Quick Random Access

Like CDs, MDs offer instantaneous random access to the beginning of any music track. Premastered MDs are recorded with location addresses corresponding to each music selection. Recordable MDs are manufactured with a User TOC Area to contain the order of the music. The TOC (Table of Contents) system is similar to the directory management system of floppy disks. In other words, starting and ending addresses for all music tracks recorded on the disc are stored in this area. This lets you randomly access the beginning of any track as soon as you enter the track number (AMS), as well as label the location with a track name as you would a file on a diskette.

User TOC Area

Music Data
Contains the order and start/end points of the music.

Looking at the controls

See pages in ( ) for more details.

The recorder

9 ! ! ! ! !
1 END SEARCH button (7) 2 REC indicator (14) 3 DISPLAY button (14, 19) 4 Display window (14, 19) 5 DC IN 3V jack (at the rear) (6) 6 MODE button (17) 7 =/+ (search /AMS) button (7, 9) 8 LINE IN (OPTICAL) jack (6, 11) 9 MIC (PLUG IN POWER) jack (12) 0 MIC SENS switch (at the bottom) (12) ! LINE OUT jack (20) ! DIGITAL MEGA BASS button (18) ! p/CHARGE button (7, 9, 27) ! ( (play) button (7, 9) ! Battery compartment (at the rear) (27)

! ! ! ! ! @ @ @ @ @ @ @

! EDIT/ENTER button (21) ! AVLS switch (at the bottom) (18) ! SYNCHRO REC (synchro-recording) switch (11) ! VOLUME +/ button (9) @ T MARK button (21) @ P (pause) button (7, 9) @ REC (record) switch (7) @ OPEN button (6) @ HOLD switch (20) @ CLOCK SET button (at the bottom) (16) @ 2 (headphones)/REMOTE jack (8)

The display window

! ! ! !
1 Character information display (14, 19) Displays the disc and track names, date, error messages, track numbers, etc. 2 MONO (monaural) indication 3 Play mode indication Shows the play mode of the MD. 4 SYNC (synchro-recording) indication 5 Disc indication Shows that the disc is rotating for recording, playing or editing an MD. 6 REC indication (7) Lights up while recording. When flashing, the recorder is in record standby mode. 7 AM/PM indication (16) Lights up along with the time indication in the 12-hour system. 8 Mega bass indication (18) 9 Battery indication (27) Shows battery condition.

0 REMAIN (remaining time/tracks) indication (14, 19) Lights up along with the remaining time of the track, the remaining time of the MD, or the remaining number of tracks. ! REC DATE (recorded/current date) indication Lights up along with the date and time the MD was recorded. When only DATE lights up, the current date and time are displayed. ! Time display (14, 19) Shows the recorded time, current time, elapsed time of the track or MD being recorded or played. ! Level meter Shows the volume of the MD being played or recorded.
The headphones with a remote control

US model other models

1 Headphones Can be replaced with optional headphones. 2 p (stop) button (7,9) 3 Control (9) To play, turn to (+ during stop. Turn to (+ during play to search the beginning of the succeeding track; hold in this position to fast-forward. Turn to = during play to search the beginning of the preceeding track; hold in this position to rewind. 4 HOLD switch (20) Slide to lock the controls of the remote control. 5 P (pause) button (7,9)
6 PLAY MODE button (17) 7 DISPLAY button (15, 19) 8 VOL (volume) +/ buttons (9) 9 TRACK MARK button (22) ! Display window (15, 19) For customers in the United States Unfold the supplied headphones as shown in the illustration below.
Sony Corporation Printed in Japan

Laser tap

Optical Pick-up flexible board
SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY.
TABLE OF CONTENTS 1. GENERAL... 4 2. SELF-DIAGNOSTIC
2-1. 2-2. 2-3. 2-4. 2-5. 2-6. General... Test Mode Setting... Operation in Test Mode Setting.. Releasing the Test Mode.. Self-Diagnostic Mode.. Clearing the Error Indication Code and Total Recording Time.. 5 6

4. TEST MODE

4-1. 4-2. 4-3. 4-4. 4-5. 4-6. General.. Test Mode Setting... Test Mode Structure.. Manual Mode.. Overall Adjustment Mode.. Hybrid Mode, Key Check Mode.. 15 16
5. ELECTRICAL ADJUSTMENTS.. 17 6. DIAGRAMS

3. DISASSEMBLY

3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. Bottom Panel Assy... 7 Connector... 7 Upper Panel Block Assy.. 8 LCD Block Assy.. 8 Ornamental Belt Block Assy. 9 Main Board... 9 Chassis (Main) Assy.. 10 OP Block Assy... 10 Holder Assy.. 11
6-1. IC Pin Descriptions.. 6-2. Block Diagram Servo Section . 6-3. Block Diagram Audio Section . 6-4. Block Diagram System Control Section . 6-5. Printed Wiring Board (-11).. 6-6. Printed Wiring Board (-12).. 6-7. Printed Wiring Board (-13).. 6-8. Schematic Diagram Main Section (1/3) . 6-9. Schematic Diagram Main Section (2/3) . 6-10. Schematic Diagram Main Section (3/3) .

7. EXPLODED VIEWS

7-1. Panel Section... 54 7-2. Chassis Section.. 55 7-3. Mechanism Deck Section.. 56
8. ELECTRICAL PARTS LIST.. 57

SERVICING NOTE

1) When repairing this device with the power on, if you remove the main board or open the upper panel assy, this device stops working. In this case, you can work without the device stopping by fastening the hook of the DOOR OPEN switch (S801) with tape.

upper panel assy

3. Press the keys below to change the mode No. ( : Increases the one place. p : Sets the one place to 0. This key brings the ten place to 0 if the one place is 0. VOLUME + : Increases the ten place by 10 if the one place is 0. Increases the adjustment value if the one place is non-zero. VOLUME : Decreases the ten place by 10 if the one place is 0. Decreases the adjustment value if the one place is non-zero. How to Adjust in Servo Mode: 1. When the servo mode is set to the appropriate mode for each adjustment, the lower tow digits of the mode No. and the value stored in EEPROM are displayed and flashing.

(08) (4C) (45) (65) (30)

(0F) (07) (10) (18) (08) (30) (30) (06)
Adjustment value (flashing) Mode No. (lower two digits)

(10) (06) (08) (30) (30)

2. To perform automatic adjustment for an adjustment item with the mode number 030 to 047, press P key. If the result of adjustment is OK, the adjustment value changes from flashing to steady on and it is automatically written to EEPROM.
(2) Audio Mode How to Transfer in the Audio Mode
Mode No. *1) 122 *1) 123 *1) 124 *1) Test Description Audio mode Audio playback L/R=1 kHz 0 dB L=1 kHz 0 dB R=1 kHz 0 dB L/R dB Audio recording test LINE manual recording MIC manual recording DEMP LINE manual recording DEMP MIC manual recording LINE automatic recording OPT automatic recording MIC automatic recording DEMP LINE automatic recording DEMP OPT automatic recording DEMP MIC automatic recording DIGITAL AGC ADJ1 MIC UP SR MIC DOWN SR MIC THD0 MIC GAIN MIC ATTACK MIC RECOVER MIC THD2 MIC GAIN2 MIC RTIME DIGITAL AGC ADJ2 LINE UP SR LINE DOWN SR LINE THD0 LINE GAIN LINE ATTACK LINE RECOVER LINE THD2 LINE GAIN2 LINE RTIME DIGITAL AGC ADJ3 MAN UP SR MAN DOWN SR AUTO THD3 AUTO LMT UP SR AUTO LMT DOWN SR MAN THD3 MANU LMT UP SR MANU LMT DOWN SR THD1 Write Change Description

AUTO ADJ

Adjustment value (flashing to steady on)
Playback VOL Playback VOL Playback VOL Playback VOL
HP output HP output HP output HP output
Recording VOL HP output Recording VOL HP output
3. To perform manual adjustment, change the adjustment value with VOLUME + or key, and press P key to write it to EEPROM. Note) Normally, automatic adjustment should be performed. Do not execute manual adjustment. System Gain Mode 1. This mode allows the system gain to be freely adjusted. Press DISPLAY key to enter this mode.

HP VOL

HP output

SYS_GAIN

Adjustment value (flashing)
(30) (FA) (D0) (00) (A0) (F8) (F0) (D0) (01) (17) (FF) (D0) (0C) (33) (F8) (E4) (5F) (04) (C0) (40) (51) (FF) (E0) (51) (FF) (A0) (1A)
2. Increase or decrease the adjustment value with VOLUME + or key. 3. Press DISPLAY or p key to return to the normal mode. 4. For the error rate display enabled:
Normal Mode Error rate display System gain Mode Press DISPLAY key
Cluster value AT error rate BLOCK error rate
*1) The port is detected and the input is automatically selected. Contents changed : Contents to be changed when VOLUME + or key is pressed. Write : Mode to permit adjustment (Default value given in parentheses) 1. Go into the test mode. 2. Press + key or VOLUME + key and VOLUME + key in this turn to set the audio mode.
Note) In normal service, do not adjust the system gain mode.

Unit LCD display

(3) Mechanism Mode How to Transfer the Mode in the Mechanism Mode: Mode No. Test Description Operation 200 FUNCTION Stepper control 210 MECHA test Initial position return 211 HEAD adjustment Operation variation changing (19) 212 REC position Recording head descent 220 CLOCK Clock 221 CLOCK check Clock check/initialization ( ) : Default value 1. Go into the test mode. 2. Press + or VOLUME + and VOLUME + and VOLUME + in this turn to set the mechanism mode. Unit LCD display
3. Press the keys below to change the mode number. ( : Increases the one place. p : Sets the one place to 0. This key brings the ten place to 0 if the one place is 0. VOLUME + : Increases the ten place by 10 if the one place is 0. Increases the adjustment value if the one place is non-zero. VOLUME : Decreases the ten place by 10 if the one place is 0. Decreases the adjustment value if the one place is non-zero. How to Adjust in the Audio Mode 1. When the audio mode is set to the appropriate mode for each adjustment, the lower tow digits of the mode No. and the value stored in EEPROM are displayed and flashing. 2. Change the adjustment value with VOLUME + or key and press P key to write the new value to EEPROM. How to Check in the Audio Mode The audio mode allows the checks below to be performed: 1. For the mode numbers of 100 and 110 to 114, pressing P key will activate a beep. (No beep sounds when c HOLD switch is put on.) 2. For the mode numbers of 121 to 124, pressing DIGITAL MEGA BASS key will display the DBB mode for the adjustment value. 1 : Mode : Mode : OFF (This will not be accepted when the LINE OUT jack is plugged. The display will be 13 : OFF when LINE OUT jack is plugged in Modes 1 and 2.) 3. For the mode numbers of 120 to 124, REC LED goes on. (The LED does not go on when SYNCHRO REC switch is put on.)

Adjustment value Mode No. (Lower two digits are displayed.)
3. Press the keys below to change the mode No. ( : Increases the one place. p : Sets the one place to 0. This key brings the ten place to 0 if the one place is 0. VOLUME + : Increases the ten place by 10 if the one place is 0. Increases the adjustment value if the one place is non-zero. VOLUME : Decreases the ten place by 10 if the one place is 0. Decreases the adjustment value if the one place is non-zero. How to Check in the Mechanism Mode The mechanism mode allows the checks below to be performed: 1. For the mode numbers of 200, 210 to 212, 220 and 221, pressing = key will move the optical pickup to the inner radius. Pressing + key will move the pickup to the outer radius. 2. For the mode numbers of 211 and 212, pressing P key will start aging. Pressing p key will stop aging. Mode No. 211. Sled aging with stepper at playback position. Mode No. 212. Sled aging with stepper at recording position. 3. With the mode number 210 selected, pressing P key will start aging with steeper at between home and recording positions. p key will stop aging.
Clock Operation Check 1. For the mode No. of 221, operation check is performed. It is determined as OK if at 11 years, 11 months, 11 days, 11 hours, 11 minutes and 11 seconds or not the default value. 2. For the mode No. of 221, pressing P key will clear the resume data stored in EEPROM and initialize the clock data. Note) The clock should be set when the overall adjustment mode is completed as OK. The write data is to be at 11 years, November 11 days, 11 hours, 11 minutes and 11 seconds. (4) Power Mode Mode No. Test Description 300 POWER test 310 POWER SUPPLY 311 DC IN 312 DC IN + Ni-Cd 313 Ni or AMAMCHG TEST 321 Charging start
4-5. OVERALL ADJUSTMENT MODE (ASSY MODE)
How to Adjust in Assy Mode 1. Go into the test mode. 2. Press = or VOLUME key.

Assy Mode

3. Insert the test CD (TDYS-1) or an available SONY CD. 4. Press ( key. The system discriminates between CD and MO and performs automatic adjustment for CD.

Indication value Remark

+B voltage value +B voltage value +B voltage value +B voltage value

CD RUN

Mode No. under adjustment
1. Go into the test mode. 2. Press + key or VOLUME + and VOLUME + and VOLUME + and VOLUME + in this turn to set the power mode.

CD Automatic Adjustment Mode No. Adjustment Description 052 CD FE balance adjustment 053 CD ABCD level adjustment 055 CD focus gain 056 CD tracking gain 057 CD focus bias 5. If the result of automatic adjustment is OK, the following display appears:
3. Press the keys below to change the mode No. ( : Increases the one place. p : Sets the one place to 0. This key brings the ten place to 0 if the one place is 0. VOLUME + : Increases the ten place by 10 if the one place is 0. Increases the adjustment value if the one place is non-zero. VOLUME : Decreases the ten place by 10 if the one place is 0. Decreases the adjustment value if the one place is non-zero. Note) With the mode number 310 selected, pressing ( key will transfer to the mode number (311 to 314) for the currently operating power. With the mode number 300 selected, pressing P key will set the sleep mode. Pressing p key will release it. How to Check in the Power Mode 1. For the mode numbers of 311 to 314, the voltage of the currently operating power is displayed.

CDmode

6. If the result of automatic adjustment is NG, the following display appears:
Result of adjustment NG mode No. (lower two digits)
* For the mode numbers of 039 and 057, if the focus bias value is NG, the following display is repeated:
10. If the result of automatic adjustment is OK, the following display appears:

MOmode

Focus bias value Mode No.
11. If the result of automatic adjustment is NG, the following display appears:
While P key is being depressed

MOmode CDmode NG

Error code (01 to 04) Meaning of focus bias
Result of adjustment NG mode No. (low two digits)
* For the mode numbers of 039 and 061, if the At error rate is NG, the following display is repeated:
12. If NG, set the servo mode. Perform automatic adjustment for the items not accepted (see the servo mode).
4-6. HYBRID MODE, KEY CHECK MODE
These modes are not used in normal service.
At error value Mode No. (lower two digits)
7. If NG, set the servo mode. Perform automatic adjustment for the items not accepted (see the servo mode). 8. Insert a MO disk. 9. Press ( key. The system discriminates between CD and MO and performs automatic adjustment for the MO disk.

MO RUN

Mode No. (lower two digits)
MO Automatic Adjustment Mode No. Adjustment Description 032 MO read FE balance adjustment 033 MO read ABCD level 034 MO write FE balance adjustment 035 MO write ABCD level 037 MO focus gain 038 MO tracking gain cluster full recording 062 Recording shock cluster full playback 039 MO focus bias 042 Low refrection CD FE balance adjustment 043 Low refrection CD ABCD level 044 Laser low reflection CD read 046 Low refrection CD tracking gain

9. Check that the traverse level at this time is above 1.0 Vp-p. 10. Press the p key. 11. Exit the test mode.
Note) Using a recorded disk in this adjustment will erase the data.
Adjustment Location : See page 19.
LOW REFLECTION CD TRAVERSE ADJUSTMENT

CD TRAVERSE ADJUSTMENT

Adjustment Method : 1. Set the servo mode of the test mode (Mode : 000). 2. Press the ( key, and set the low reflection CD test adjustment mode (Mode : 040) using the VOLUME + or key. 3. Insert any MO disk available on the market. 4. When the ( key is pressed, the low reflection CD FE balance adjustment mode (Mode : 042) will be set after low reflection CD focus search adjustment mode (Mode : 041). 5. Press the P key to perform automatic adjustment, and check that the traverse waveform is symmetrical at the top and bottom.
Adjustment Method : 1. Set the servo mode of the test mode (Mode : 000). 2. Press the ( key, and set the CD test adjustment mode (Mode : 050) using the VOLUME + or key. 3. Press the = or + key and move the optical pick-up to the center circumference. 4. Insert a test CD (TDYS-1). 5. When the ( key is pressed, the CD FE balance adjustment mode (Mode : 052) will be set after CD focus search adjustment mode (Mode : 051). 6. Press the P key to perform automatic adjustment, and check that the traverse waveform is symmetrical at the top and bottom.
A 0V B Specification : A = B, C > 0.9 Vp-p = C
6. Check that the traverse level at this time is above 0.9 Vp-p. 7. Press the p key. 8. Exit the test mode. Adjustment Location : See page 19.
7. Check that the traverse level at this time is above 1.0 Vp-p. 8. Press the p key. 9. Exit the test mode. Adjustment Location : See page 19.

CD RF LEVEL CHECK

oscilloscope MAIN board AP5500 (RF) AP5430 (VC) digital voltmeter MAIN board AP5117 (VCC) AP574 (LDI0)

Adjustment Location :

AP574 (LDI0) IC503 IC501
Adjustment Method : 1. Set the servo mode of the test mode (Mode : 000). 2. Press the ( key, and set the CD test adjustment mode (Mode : 050) using the VOLUME + or key. 3. Press the = or + key and move the optical pick-up to the center circumference. 4. Insert a test CD (TDYS-1). 5. When the ( key is pressed, the CD FE balance adjustment mode (Mode : 052) will be set after CD focus search adjustment mode (Mode : 051). 6. When the ( key is pressed, the CD ABCD level adjustment mode (Mode : 053) is set. 7. Press the P key to perform automatic adjustment, and check that the RF level is 1.1 0.3 Vp-p.

BP801 (TEST)

AP5500 (RF)

AP5430 AP5117 (VCC) (VC)

TP5980 (TE)

(RF waveform)

1.0 0.3 Vp-p
8. Check that the voltage between AP5117 (VCC) and AP574 (LDI0) and at this time is below 40 mV. 9. Press the p key. 10. Exit the test mode.

2.65V ADJUSTMENT

digital voltmeter MAIN board AP908 (2.65V) AP906 (GND)
Adjustment Method : 1. Playback the test CD (TDYS-1). 2. Adjust RV901 so that the voltage between AP908 (2.65V) and AP906 (GND) is at 2.65 0.03 Vdc. Adjustment Location :

IC802 AP908 (2.65V)

AP906 (GND) CN801

RV901 2.65V ADJUSTMENT

SECTION 6 DIAGRAMS

6-1. IC PIN DESCRIPTIONS

IC503 CXD2652AR (DIGITAL SERVO, ATRAC) Pin No. Pin name MNT 0 MNT 1 MNT 2 MNT 3 SWDT SCLK XLAT SRDT SENS XRST SQSY DQSY WRPWR NC TX OSC1 OSC0 XTSL NC RVSS DIN NC ADDT DATA ALRCK ABCK FS256 DVDD A00 A08, A10, A11 DVSS XOE XCAS A09 XRAS XWE D0 D3 MVCI ASYO ASYI AVDD BIAS RFI I/O O O I I I O O I O O I I O I I I O O O O O O O O O O I O I I I Pin Description Traverse count signal output. Track jump detect output. Not used (Open). Focus OK signal output. Inputs write data signal from system controller (IC802). Inputs serial clock signal from system controller (IC802). Inputs serial latch signal from system controller (IC802). Outputs write data signal to system controller (IC802). Outputs internal status (SENS) to system controller (IC802). Inputs reset signal from system controller (IC802). L : Reset Output subcode Q sync (SCOR) to system controller (IC802). Outputs L every 13.3 msec. Outputs H at all most mostly. Outputs digital-in U-bit CD format subcode Q sync (SCOR) to system controller (IC802). Outputs L every 13.3 msec. Outputs H at all most mostly. Inputs laser power switching signal from system controller (IC801). Not used (Open). Input of write data taransmission timing from system controller (IC801). Also used as magnetic field head ON/OFF output. Clock output (22.5 MHz). Clock input (22.5 MHz). Not used (Fixed at L) Not used (Connect to ground). Connect to ground. Digital audio signal input pin (For optical input). Not used (Open). Audio data input from A/D converter (IC301). Monitor/decode audio data output to A/D converter (IC301). L/R clock output to D/A converter (IC301). Bit clock signal output to A/D, D/A converter (IC301). 11.2896 MHz clock output (MCLK). Power supply (+2.8 V) for digital. Address signal output to DRAM (IC509). Ground terminal. Output enable contol signal output to DRAM (IC509). Column address strobe singal output to DRAM (IC509). Address signal output to DRAM (IC509). Row address strobe signal output to DRAM (IC509). Read/write control signal output to DRAM (IC509). Data signal input from DRAM (IC509). Not used (Connect to ground). Playback EFM full-swing output (L : VSS, H : VDD). Playback EFM asymmetry comparate voltage input. Power supply (+2.8 V) for analog. Playback EFM asymmetry circuit constant current input. Inputs playback EFM RF signal from RF amplifier (IC501).

Pin No. 100

Pin name AVSS PDO PCO FILI FILO CLTV PEAK BOTM ABCD FE AUX1 VC ADIO AVDD ADRT ADRB AVSS SE TE AUX2 DCHG APC ADFG FO CONT XLRF CKRF DTRF APCREF LDDR TRDR TFDR DVDD FFDR FRDR FS4 SRDR SFDR SPRD SPFD FGIN TEST1 TEST2 TEST3 DVSS EFMO
I/O O I O I I I I I I I I I I O I O I I O O O O O O O O O I O
Pin Description Ground terminal. Not used (Open). Decoder PLL master clock PLL phase comparison output. Decoder PLL master clock PLL filter input. Decoder PLL master clock PLL filter output. Decoder PLL master clock PLL VCO control voltage input. Inputs peak hold signal for light amount signal from RF amplifier (IC501). Inputs bottom hold signal for light amount signal from RF amplifier (IC501). Light amount signal from RF amplifier (IC501). Input focus error signal from RF amplifier (IC501). Input of auxiliary signal from RF amplifier (IC501). Input of middle point voltage (+1.4 V) from RF amplifier (IC501). Not used (Open). Power supply (+2.8 V) for analog. Not used (Connect to +2.8 V). Not used (Connect to ground). Ground terminal. Input of sled error signal from RF amplifier (IC501). Input of tracking error signal from RF amplifier (IC501). Not used (Connect to +2.8 V). Not used (Connect to +2.8 V). Not used (Connect to +2.8 V). Input of ADIP dual FM signal from RF amplifier (IC501) (22.05 kHz 1 kHz). (TTL Schmit input) Focus control output to RF amplifier (IC501). Latch signal input from RF amplifier (IC501). RFCK clock (7.35 kHz) signal output. Serial data input from system controller (IC802). Laser power setting signal input. Not used (Open). Tracking servo drive signal output (). Tracking servo drive signal output (+). Power supply (+2.8 V) for digital. Focus servo drive signal output (+). Focus servo drive signal output (). Not used (Open). (176.4 kHz clock signal output (MCLK).) Sled servo drive signal output (). Sled servo drive signal output (+). Spindle servo drive signal output (). Spindle servo drive signal output (+). FG signal input from spindle motor driver (IC701). Not used (Connect to ground). Not used (Connect to ground). Not used (Connect to ground). Ground terminal. EFM recording signal output.
IC802 CXP740010 (SYSTEM CONTROL) Pin No. Pin name CLKCS XRST WRPWR TX SDI2 SDO2 SCK2 XRF-STBY SSB SSB SCK DTCK SPCK WP OPEN CLOCK NC NC T.MARK REC PROTECT HOLD SYNC REC D. B. B XLINEDET AVLS XTEST XDCIN KANA SE L XPHOTO SW XP CONT X2VCONT XREC LED MODE2 MODE1 XNIMH CHG XLCD ON MRST VSS XTAL EXTAL LCD STBY NC LCD DATA LCD SCK CHG MNT INLS HIDC MNT KEYR AVSS I/O O O O O I O O O I/O I/O I/O I I I I I I I I I I I I I I O O O O O O O O I O O O I I I I Battery charger control signal output. L : Charge LCD ON/OFF control. L : ON Not used (Open). Microprocessor reset input. Ground. System clock (12 MHz). System clock (12 MHz). LCD communication strobe signal output to LCD driver. Not used. LCD data output. Serial clock output. Battery charge voltage minitor input. Detecting switch for internal circuit of sleding. L : Internal circuit Voltage monitor DC input. Remote control key input. Ground terminal for A/D converter. Pin Description Chip select output to real time clock (IC805). Reset output. L : Reset Laser power switching signal output. Write data transfer timing output. Serial data input. Serial data output. Serial clock output. Power control output to RF amplifier (IC501). SSB data signal input and output. SSB clock signal input and output. (Not used (Open).) Remote control data signal input/output. Not used (Open). Wake-up signal input from remote control key and this unit key. Detecting switch for opening and closing of the upper cover. L : Close CLOCK SET switch input. Not used (Open). Not used (Open). T MARK (Track mark) switch input. REC switch input. Disc write protect switch. H : Protect HOLD switch input (This unit). L : HOLD SYNCHRO REC switch input. DIGITAL MEGA BASS slide switch input. LINE IN (OPTICAL) detection input. L : LINE IN AVLS switch input. L : LIMIT Test mode terminal. L : Test mode Not used (Open). (DC input detect. L : DC IN) Model input. (L : J model, H : Tourist, Hong Kong model) ON/OFF control signal output of PHOTO circuit. Power control output. L : ON Outputs H while operating with a lithium battery. 2V power control signal output. L : ON REC LED control. L : ON REC drive (IC602) control signal output.

2.8V REG 2 IC807
RVCC (+2.8V) RECHAGEABLE BATTERY NH-14WM 1.2V 1400mAh 3V (CHARGE)

S806 HOLD OFF HOLD

S807 SYNCHRO REC OFF ON S802 OPEN RVCC (+2.8V) S801 DOOR OPEN

S809 DIGITAL MEGA BASS

S808 AVLS NORM LIMIT

S901 (BATTERY IN)

Q906 FILTER LF901 J901 DC IN 3V
GND SW 100 S803 CLOCK SET OPEN CLOCK TMARK REC

S804 T MARK

S805 REC

Q903 3V Q901

RESET 3 IC804 X801 12MHz TEMP METER 4 IC803
NIMH CHG MRST 41 EXTAL CHG CONT XTAL CHG MNT TEMP CHARGE CONTROL IC2 CHARGE CONTROL Q902
6-8. SCHEMATIC DIAGRAM MAIN SECTION (1/3) Refer to page 49 for IC Block Diagrams. Waveforms
VOLT/DIV : 0.5V AC TIME/DIV : 1sec

1.00.3Vp-p

VOLT/DIV : 0.1V AC TIME/DIV : 0.1msec

Approx. 0.5Vp-p

VOLT/DIV : 1V AC TIME/DIV : 5msec 2.4Vp-p

13.4msec

VOLT/DIV : 1V AC TIME/DIV : 20nsec

2.4Vp-p

22.5MHz

(Page 47) (Page 43)

Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. % : indicates tolerance. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Note: Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi.

(Page 45) (Page 48)

(Page 47)
A : B+ Line. Power voltage is dc 3 V and fed with regulated dc power supply from external power voltage jack. Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : PB ( ) : REC : Impossible to measure Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. Circled numbers refer to waveforms. Signal path. J : PB (digital) c : REC (digital) Abbreviation HK : Hong Kong model. JE : Tourist model.

Remark

Ref. No. LCD1

Part No.

Description
X-4950-406-1 ARM ASSY, CLICK 3-938-805-72 KNOB (DOLBY) (SILVER). (for GOLD, YELLOW) 3-938-805-81 KNOB (DOLBY) (PURPLE). (for BLUE) X-4950-559-1 SERVICE ASSY, UPPER PANEL (N) (GOLD) X-4950-560-1 SERVICE ASSY, UPPER PANEL (L) (BLUE) X-4950-561-1 SERVICE ASSY, UPPER PANEL (Y) (YELLOW) 1-803-308-11 LCD MODULE

7-2. CHASSIS SECTION

MT-MZR55-161

Ref. No. 56 56

Ref. No. 63
Part No. A-3323-131-A A-3323-132-A 3-335-797-91 4-995-436-01 X-4950-397-3 4-963-883-21 4-212-824-02 4-212-824-12 4-212-824-22
X-4950-398-1 BELT ASSY, ORNAMENTAL 4-212-844-01 BUTTON (OPEN) (GOLD) 4-212-844-11 BUTTON (OPEN) (SILVER). (for BLUE, YELLOW) 4-212-820-01 DAMPER X-4950-396-3 CHASSIS (MAIN) ASSY 4-212-821-01 SCREW (MD), STEP A-3323-076-A MAIN BOARD, COMPLETE (E,HK,JE) A-3323-130-A MAIN BOARD, COMPLETE (US,CND)
MAIN BOARD, COMPLETE (AEP,UK,AUS) MAIN BOARD, COMPLETE (FR) SCREW (M1.4), TOOTHED LOCK SCREW (HP), STEP CASE ASSY, BATTERY SCREW (M1.4), PRECISION PAN LID, BATTERY CASE (GOLD) LID, BATTERY CASE (BLUE) LID, BATTERY CASE (YELLOW)
7-3. MECHANISM DECK SECTION (MT-MZR55-161)

103 107

107 102
The components identified by mark ! or dotted line with mark. ! are critical for safety. Replace only with part number specified. Ref. No. 113 Part No. X-4950-391-1 3-704-197-31 4-212-312-01 X-4950-390-1 4-995-585-01 1-418-079-11 4-963-883-41 4-963-883-01 4-212-308-01 3-338-645-31 Description HOLDER ASSY SCREW (M1.4X3.0), LOCKING SHAFT, MAIN CHASSIS ASSY SPRING (LIMITER), TORSION PR UNIT SCREW (M1.4), PRECISION PAN SCREW (M1.4), PRECISION PAN GEAR, WORM WASHER (0.8-2.5) Remark Ref. No. ! 122 M1 M2 M3 Part No. 4-212-862-01 1-671-605-11 3-015-033-01 4-995-586-01 4-900-615-01 4-995-578-01 X-4949-131-1 4-995-571-01 X-4950-546-1 1-763-011-11 Description
Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi. Remark

SCREW (M1X1.3), PRECISION MD FLEXIBLE BOARD SCREW (DIA. 1.4X4), PRECISION GEAR (SD) SCREW, LEAD GEAR (SC) BRACKET (S) ASSY SPRING, THRUST SERVICE ASSY, OP MOTOR (SPINDLE) (INCLUDING TURNTABLE)
4-212-310-01 GEAR (RACK) 4-212-309-01 GEAR (WORM WHEEL) X-4950-392-1 CHASSIS ASSY, GEAR
1-763-174-11 MOTOR, DC (LOADING) A-3311-972-A MOTOR BLOCK ASSY, SLED
SECTION 8 ELECTRICAL PARTS LIST
NOTE: Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. -XX and -X mean standardized parts, so they may have some difference from the original one. RESISTORS All resistors are in ohms. METAL:Metal-film resistor. METAL OXIDE: Metal oxide-film resistor. F:nonflammable Abbreviation AUS : Australian model CND : Canadian model FR : French model HK : Hong Kong model JE : Tourist model Ref. No. Part No. A-3323-076-A A-3323-130-A A-3323-131-A A-3323-132-A Description Items marked * are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. SEMICONDUCTORS In each case, u : , for example: uA. : A. uPA. : PA. uPB. : PB. uPC. : PC. uPD. : PD. CAPACITORS uF : F COILS uH : H Board part number suffix -11 : Number suffix is -11 -12 : Number suffix is -12 -13 : Number suffix is -13
The components identified by mark ! or dotted line with mark. ! are critical for safety. Replace only with part number specified. Les composants identifis par une marque ! sont critiques pour la scurit. Ne les remplacer que par une pice portant le numro spcifi. When indicating parts by reference number, please include the board.
Ref. No. C211 C212 C213 C214 C215 C216 C217 C218 C219 C220
Part No. 1-164-874-11 1-117-919-11 1-119-749-11 1-164-878-11 1-117-919-11 1-164-937-11 1-125-985-11 1-164-939-11 1-125-926-11 1-164-939-11
Description CERAMIC CHIP TANTAL. CHIP TANTAL. CHIP CERAMIC CHIP TANTAL. CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP TANTAL. CHIP CERAMIC CHIP 100PF 10uF 33uF 150PF 10uF 0.001uF 0.47uF 0.0022uF 4.7uF 0.0022uF 5% 20% 20% 5% 20%

5% 5% 5% 5%

10% 20% 10% 10% 10% 10% 10% 20% 20% 10% 20% 10%
20% 10% 10% 10% 5% 10% 10% 10%
20% 10% 10% 10% 10% 10% 10% 20% 10% 20% 20% 20%

20% 10% 0.5PF 0.5PF

20% 20% 20% 20% 20% 20% 20% 20% 10% 10% 20% 5% 20% 10% 20% 5% 10% 10% 10% 10%
20% 20% 10% 10% 5% 5% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10%
1-164-939-11 CERAMIC CHIP

0.0022uF 10%

1-125-777-11 CERAMIC CHIP
Ref. No. C939 C940 C941 C942 C943 C944 C946 C948 Part No. 1-125-777-11 1-164-943-11 1-164-943-11 1-164-937-11 1-111-253-11 Description CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP TANTAL. CHIP 0.1uF 0.01uF 0.01uF 0.001uF 100uF 0.001uF 470PF 0.1uF 10% 10% 10% 10% 20% 10% 10% Remark 10V 16V 16V 16V 6.3V 16V 16V 16V (-11) Ref. No. IC510 IC601 IC602 IC701 IC801 IC802 IC803 IC804 IC805 IC806 IC807 IC901 IC902 IC903 J301 Part No. 8-759-487-20 8-759-559-94 8-759-329-43 8-759-559-62 8-759-468-72 8-752-904-97 8-759-559-93 8-759-559-95 8-759-560-17 8-759-530-10 8-759-569-24 8-759-559-89 8-759-427-21 8-759-427-21 8-749-015-08 Description IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC PST9330UL XC6383E401MR MPC18A20VM BA6966FV-E2 AK6420AM-E2 CXP740010-015R S-8110ANP-DSB-T2 PST9325UL RS5C348A-E2 XC6383B331MR XC62FP2802MR NJU7015R-TE2 MB3800PFV-G-BND-EF MB3800PFV-G-BND-EF SJ7000 (LINE IN (OPTICAL)) Remark
1-164-937-11 CERAMIC CHIP 1-164-935-11 CERAMIC CHIP 1-107-826-91 CERAMIC CHIP
< CONNECTOR > * CN501 CN502 CN601 CN801 1-764-504-21 1-778-164-21 1-778-711-11 1-778-160-11 CONNECTOR, FPC (ZIF) 22P CONNECTOR, FFC/FPC (ZIF) 16P CONNECTOR, FFC/FPC (ZIF) 5P CONNECTOR, FFC/FPC (ZIF) 12P < DIODE > D301 D302 D600 D601 D602 D801 D802 D803 D902 D903 D904 D905 8-719-066-17 8-719-066-17 8-719-072-10 8-719-072-10 8-719-421-27 8-719-421-27 8-719-072-27 8-719-421-27 8-719-072-26 8-719-072-26 DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE DIODE FTZ6.8E-T148 FTZ6.8E-T148 FS05J10-TP FS05J10-TP MA728 MA728 MA2Z748001S0 MA728 FS1J3-TP FS1J3-TP J302 J303 J304 J901 1-779-881-11 1-779-881-21 1-778-179-11 1-785-383-11
< JACK > JACK (LINE OUT) JACK (MIC) JACK (2/REMOTE) JACK, DC (POLARITY UNIFIED TYPE) (DC IN 3V) < COIL > L301 L302 L303 L501 L502 L504 L506 L507 L508 L509 5% 5% 5% 1/16W (-11,-12) 1/16W (-11,-12) 1/16W (E,HK,JE) L510 L511 L601 L602 L603 L801 L901 L902 L903 L904 L905 1-414-754-11 1-414-754-11 1-414-754-11 1-414-398-41 1-414-398-41 1-414-398-41 1-410-389-31 1-410-389-31 1-410-389-31 1-410-389-31 1-414-398-41 1-410-389-31 1-414-404-41 1-412-330-41 1-414-398-41 1-414-398-41 1-414-398-41 1-414-398-41 1-414-398-41 1-424-673-41 INDUCTOR INDUCTOR INDUCTOR INDUCTOR INDUCTOR INDUCTOR INDUCTOR CHIP INDUCTOR CHIP INDUCTOR CHIP INDUCTOR CHIP INDUCTOR INDUCTOR CHIP INDUCTOR INDUCTOR INDUCTOR INDUCTOR INDUCTOR INDUCTOR INDUCTOR COIL, CHOKE 10uH 10uH 10uH 10uH 10uH 10uH 47uH 47uH 47uH 47uH 10uH 47uH 100uH 330uH 10uH 10uH 10uH 10uH 10uH 4.7uH 4.7uH

R902 R903 R904 R905 R906 R907 R908 R909 R910 R911 R912 R913 R914 R915 R916 R918 R919 R921 R922 R923 R924 R927 R928 R929 R930
1-216-864-11 METAL CHIP 1-216-833-11 1-218-899-11 1-218-899-11 1-218-891-11 1-218-903-11 1-216-845-11 1-218-915-11 1-218-915-11 1-218-907-11 1-216-821-11 1-218-903-11 1-218-887-11 1-219-724-11 1-219-724-11 1-218-903-11 1-218-895-11 1-218-871-11 1-218-859-11 1-218-871-11 1-218-855-11 1-216-801-11 1-216-801-11 1-216-821-11 1-216-825-11 METAL CHIP RES, CHIP RES, CHIP RES, CHIP RES, CHIP METAL CHIP RES, CHIP RES, CHIP RES, CHIP METAL CHIP RES, CHIP RES, CHIP METAL CHIP METAL CHIP RES, CHIP RES, CHIP RES, CHIP RES, CHIP RES, CHIP RES, CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP
0 10K 150K 150K 68K 220K 100K 680K 680K 330K 1K 220K 47K 220K 100K 10K 3.3K 10K 2.2K 1K 2.2K
1/16W (-11,-12) 5% 1/16W 0.50% 1/16W 0.50% 1/16W 0.50% 1/16W 0.50% 5% 0.50% 0.50% 0.50% 5% 0.50% 0.50% 1% 1% 0.50% 0.50% 0.50% 0.50% 0.50% 0.50% 5% 5% 5% 5% 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/4W 1/4W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W

Ver 1.4 1999. 09

Ref. No. R931 R933 R934 R935 R936 R937 R938 R939 R940 R941 R942 R943
Part No. 1-216-833-11 1-216-789-11 1-216-789-11 1-216-827-11 1-216-827-11 1-216-827-11 1-216-827-11 1-216-837-11 1-216-837-11 1-216-817-11
Description METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP 10K 2.2 2.2 3.3K 3.3K 3.3K 3.3K 22K 22K 1M 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
Remark 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W

Ref. No.

Description MISCELLANEOUS ***************

115 ! 122 LCD1

1-803-307-11 1-418-079-11 1-671-605-11 X-4950-546-1 1-803-308-11
SWITCH MODULE PR UNIT MD FLEXIBLE BOARD SERVICE ASSY, OP LCD MODULE
1-216-817-11 METAL CHIP 1-216-857-11 METAL CHIP
M1 1-763-011-11 MOTOR (SPINDLE) (INCLUDING TURNTABLE) M2 1-763-174-11 MOTOR, DC (LOADING) M3 A-3311-972-A MOTOR BLOCK ASSY, SLED ************************************************************* ACCESSORIES & PACKING MATERIALS ******************************** 1-418-002-11 1-418-028-11 1-418-049-12 1-418-275-11 1-418-276-11 1-418-277-11 1-528-842-11 1-569-007-11 1-759-693-11 1-779-504-11 REMOTE CONTROL UNIT (RM-MZR55) ADAPTOR, AC (AC-MZR55) (E,JE) ADAPTOR, AC (AC-MZR55) (UK,HK) ADAPTOR, AC (AC-MZR55) (US,CND) ADAPTOR, AC (AC-MZR55) (AEP,FR) ADAPTOR, AC (AC-MZR55) (AUS) BATTERY, NICKEL HYDROGEN (NH-14WM) ADAPTOR, CONVERSION 2P (E,JE) CASE, BATTERY CONNECTOR, OPTICAL
< NETWORK RESISTOR > RB301 RB302 RB501 1-233-971-11 RES, NETWORK (CHIP TYPE) 47K 1-233-965-11 RES, NETWORK (CHIP TYPE) 4.7K 1-233-963-21 RES, NETWORK (CHIP TYPE) 2.2K < VARIABLE RESISTOR > RV901 1-223-991-21 RES, CARBON ADJ 1K < SWITCH > S301 S801 S802 S803 S804 S805 S806 S807 S808 S809 1-762-078-11 1-762-805-21 1-572-467-61 1-572-921-11 1-771-517-21 1-771-331-41 1-762-078-11 1-762-078-11 1-762-078-11 1-771-517-21 SWITCH, SLIDE (MIC SENS) SWITCH, PUSH (1 KEY) (DOOR OPEN) SWITCH, PUSH (1 KEY) (OPEN) SWITCH, KEY BOARD (CLOCK SET) SWITCH, TACTILE (EVQPUK02K) (T MARK) SWITCH, PUSH (1 KEY) (REC) SWITCH, SLIDE (HOLD) SWITCH, SLIDE (SYNCHRO REC) SWITCH, SLIDE (AVLS) SWITCH, TACTILE (EVQPUK02K) (DIGITAL MEGA BASS) !