Recording/Playback with the Connected Equipment
Dubbing onto another tape recorder
Connect another tape recorder to the EAR jack using the RKG64HG connecting cord (not supplied) (For Sony World Model : in Japan, use the RK-G64, not supplied). Set this unit to the playback mode and another tape recorder to the recording mode.

Precautions

On power Operate the unit only on 3 V DC. For AC operation, use the AC power adaptor recommended for the unit. Do not use any other type. For battery operation, use two size AA (R6) batteries. On the unit Use only the (standard microcassettes) with this unit. Non-standard cassettes cannot be used because their L dimension (see illustration) is different. Standard Only standard microcassettes have a small indention of side A. Non-standard

Troubleshooting

Should any problem persist after you have made these checks, consult your nearest Sony dealer. A cassette cannot be inserted. t The cassette is being inserted in the wrong way. t nN has been already pressed. Playback cannot be made. t The tape has reached the end of the reverse side. Press DIR. to switch playback side to FWD. t The batteries are weak. Replace both batteries with new ones. t The head is contaminated. Recording cannot be made. t There is no cassette in the cassette compartment. t The tab on the tape has been removed. (Even if only the tab on the reverse side is removed, recording cannot be made.) To reuse the tape for recording, cover the tab hole with adhesive tape. To record on one side only, insert a cassette with the side to start recording facing away from the lid (reverse side). t The batteries are weak. Replace both batteries with new ones. t The head is contaminated. t Improper setting of the VOR switch. Recording is interrupted. t The VOR switch is set to H or L. When you do not use VOR, set it to OFF. During CUE/REVIEW the tape stops or does not run. You cannot fast-forward or rewind. t The batteries are weak. Replace both batteries with new ones. The unit does not operate. t The batteries have been inserted with incorrect polarity. t The batteries are weak. Replace both batteries with new ones. t >PAUSE is slid in the direction of the arrow. t The AC power adaptor is connected to the unit only and you are going to use the unit on batteries. No sound comes from the speaker. t The earphone is plugged in. t The volume is turned down completely. The sound drops out or comes with excessive noise. t The volume is turned down completely. t The batteries are weak. Replace both batteries with new ones. t The head is contaminated. See Maintenance. Tape speed is too fast or too slow in the playback mode. t Improper setting of the TAPE SPEED switch. Set it to the same speed as that used for recording. Tape speed is faster than the normal playback speed. t The FAST PB switch (M-830V only) is slid in the direction of the arrow. Recording cannot be erased completely. t The head is contaminated.

Maintenance

This warranty is valid only in the United States.

Head Head Capstan

3-865-289-22 (1)

Microcassette-Corder

Operating Instructions
Recording from another tape recorder
Connect another tape recorder to the MIC jack using the RKG64HG connecting cord (not supplied) (For Sony World Model : in Japan, use the RK-G64, not supplied). Set this unit to the recording mode and another tape recorder to the playback mode. In this case set VOR to OFF.

Pinch roller

M-830V/730V
Sony Corporation 1999 Printed in China
Recording with an External Microphone
Connect a microphone to the MIC jack. Use a microphone of low impedance (less then 3 kilohms) such as ECM-T115 (not supplied). When using a plug-in-power system microphone, the power to the microphone is supplied from this unit. Note

When recording with an external microphone, the VOR system may not work properly because of the difference in sensitivity.

Approx. 5 mm

Approx. 2.5 mm
To clean the tape head and path Press nN and wipe the head, capstan and the pinch roller with a cotton swab, moistened with alcohol every 10 hours of use. To clean the exterior Use a soft cloth slightly moistened in water. Do not use alcohol, benzine or thinner.
For customers in the United States

Owners Record

The model number is located at the bottom and the serial number is located inside the battery compartment. Record these numbers in the spaces provided below. Refer to these numbers whenever you call upon your Sony dealer regarding this product. Model No. Serial No.
Do not leave the unit in a location near heat sources, or in a place subject to direct sunlight, excessive dust or mechanical shock. Should any solid object or liquid fall into the unit, remove the batteries or disconnect the AC power adaptor, and have the unit checked by qualified personnel before operating it any further. Keep personal credit cards using magnetic coding or springwound watches etc. away from the unit to prevent possible damage from the magnet used for the speaker. When you do not use the unit for long, remove the batteries to avoid damage caused by battery leakage and subsequent corrosion. If the unit has not been used for long, set it in the playback mode and warm it up for a few minutes before inserting a cassette.
If you have any questions or problems concerning your unit, please consult your nearest Sony dealer.

Specifications

Tape (normal position type) Recording system 2-track 1-channel monaural Speaker Approx. 3.6 cm (1716 in.) dia. Tape speed 2.4 cm/s (1516 ips), 1.2 cm/s (1532 ips) Frequency range 300 - 4,000 Hz (with TAPE SPEED switch at 2.4 cm/s) Input Microphone input jack (minijack/PLUG IN POWER) sensitivity 0.22 mV for 3 kilohms or lower impedance microphone Output Earphone jack (minijack) for ohms earphone Power output (at 10% harmonic distortion) 250 mW Power requirements 3 V DC batteries AA (R6) 2/External DC 3V power sources Dimensions (w/h/d) Approx. 62.2 120.5 25.5 mm (1116 in.) incl. projecting parts and controls Mass Approx. 130 g (4.6 oz) Supplied accessories Microcassette tape MC-30 (1) (European model and Sony World Model only) Batteries R6P (SR) (2) (European model and Sony World Model only) Carrying pouch (1) (M-830V and European model of M-730V only) Earphone (1) (Sony World Model only) Design and specifications are subject to change without notice.

You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment.

About This Manual

The instructions in this manual are for the M-830V and M-730V. Before you start reading, check your model number. The M830V is the model used for illustration purposes. Any differences in operation are clearly indicated in the text, for example, M-830V only.

Preparing Power Sources

Choose one of the following power sources.

Dry Batteries

Insert the # side first for each battery.
The unit will play back normally for a while, even after the E lamp flashes. However, replace the batteries as soon as you can. If you do not, the playback cannot be made with normal sound, noise may be recorded and the recorded sound will not be loud enough (M-830V only). In the following cases you do not need to replace the batteries: if the REC/BATT lamp, or BATT lamps flash with the playback sound when you turn up the volume. if the E lamp lights momentarily when the tape starts running or at the end of the tape (M-830V only). if the E lamp flashes during FF (CUE) or REW (REVIEW) (M-830V only).

Recording

Make sure that nothing is connected to MIC. EAR REC lamp (M-830V) REC/BATT lamp (M-730V) MIC (PLUG IN POWER) Microphone > PAUSE z VOR FAST PB TAPE COUNTER CUE MARKER CUE/ REVIEW TAPE SPEED xZ DIR.
Battery life (Approx. hours)
Batteries Sony manganese R6P (SR) Sony alkaline LR6 (SG) Recording 7 24

(EIAJ*)

Set VOR to H, L or OFF. If you set VOR to H or L, the unit automatically starts recording the sound and pauses when there is no sound (you can save tapes and batteries). H: To record at meeting or in a quiet and/or spacious place. L: To record for dictation or in a noisy place. When the sound is not loud enough, set it to OFF, or the unit may not start recording. Press z. nN is pressed simultaneously and recording starts. While the tape runs, the REC lamp (M-830V) or REC/BATT lamp (M-730V) lights and flashes depending on the strength of the sound. Recording level is fixed.
To monitor the sound Connect an earphone (supplied to Sony World Model only) to EAR jack. The monitor volume cannot be adjusted by VOL. To prevent a cassette from being accidentally recorded over Break out and remove the cassette tabs. To reuse the cassette for recording, cover the tab hole with adhesive tape.

Playing a Tape

> PAUSE nN FAST PB CUE/ REVIEW TAPE SPEED xZ DIR.
At the end of the reverse side, recording stops and the unit turns off automatically.

Press or slide xZ z during playback (the unit becomes in the recording mode)
Tape direction indicators
Make sure that nothing is connected to the DC IN 3V jack. 1 Open the battery compartment lid. 2 Insert two size AA (R6) batteries with correct polarity and close the lid. To take out the batteries
* Measured valued by the standard of EIAJ (Electronic Industries Association of Japan) (Using a Sony Microcassette)
Recording cue markers (M-830V only)
While recording, you can record a special signal on the tape to mark a specific position. At the desired position, press CUE MARKER to record a signal. The REC lamp goes off and a signal will be recorded on the tape. If you want to record a signal longer than that, press CUE MARKER as long as you want. During cue and review, you will hear the beep sound at the signal position. During playback with the headphones plugged in, you will hear the signal with low frequency sound at the signal position. Notes
Stop recording Start recording during playback
The battery life may shorten depending on the operation of the unit.

House current

to the wall outlet xZ
Review the portion just recorded Push up CUE/REVIEW toward REVIEW during the recording. Release the button at the point to start playback. Pause recording Take out a cassette Slide >PAUSE in the direction of the arrow. xZ
Insert a cassette with the side to start playing facing the lid. Select the tape speed to the same speed as that used for recording. Press nN. Adjust the volume.
Note If the battery compartment lid is accidentally detached Attach it as illustrated. AC power adaptor (not supplied)
Select the 2.4 cm tape speed for recording, if you play back the recorded tape with another unit. Otherwise, the sound quality may be changed.
Notes on recording sides Connect the AC power adaptor to DC IN 3V and to a wall outlet. Use the AC-E30HG AC power adaptor (not supplied) (For Sony World Model: in Japan, use the AC-E30M, not supplied). Do not use any other AC power adaptor. Polarity of the plug Press the reset button of the TAPE COUNTER. Note
The number in the tape counter will increase when playing back the forward side, and decrease when playing back the reverse side. When recording on both sides, recording will not be made for a few seconds while the tape is switching sides. When you open the cassette holder, the direction of the tape is reset to the forward side. The DIR. switch cannot be used during recording.

We recommend recording cue markers when there is a break in the sound. The beep may sound differently depending on the marked position on the tape because the winding speed varies from the beginning to the end of the tape.
At the end of the reverse side, playback stops and the unit turns off automatically. If you plug in headphones (not supplied) to the EAR jack, you will get monaural output from both left and right channels.
To Stop playback/stop fast forward or rewind* Pause playback Play back only the reverse side Fast forward Rewind Search forward during playback (CUE) Search backward during playback (REVIEW) Switch playback side Press or slide xZ Slide >PAUSE in the direction of the arrow. DIR. so that the REV indicator turns green and press nN. Slide CUE/REVIEW toward CUE during stop. Slide CUE/REVIEW toward REVIEW during stop. Keep CUE/REVIEW pushed down during playback and release it at the point you want. Keep CUE/REVIEW pushed up during playback and release it at the point you want. DIR.
When to replace the batteries For M-730V Replace the batteries with new ones when the REC/BATT lamp dims. For M-830V Replace the batteries with new ones when the BATT lamps go off and the E lamp flashes. The BATT lamps change as illustrated:

BATT BATT

Specifications for AC-E30HG vary for each area. Check your local voltage and the shape of plug before purchasing.
Press xZ and insert a standard microcassette with the side to start recording facing the lid. Select the desired tape speed. 2.4 cm for optimum sound (recommended for normal use): A 30-minute recording can be made using both sides of the MC-30 microcassette. 1.2 cm for longer recording time: A 60-minute recording can be made using both sides of the MC-30 microcassette. Choose recording sides. To record on both sides Slide DIR. so that the FWD indictor turns green. Recording will start form the side facing the cassette holder window (forward side) and switches automatically to the reverse side at the end of the side (Auto Reverse). Notes

Notes on VOR (Voice Operated Recording)
The VOR system depends on the environmental conditions. If you cannot get the desired results, set VOR to OFF. When you use the system in a noisy place, the unit will stay in the recording mode. If the sound is too soft, on the contrary, the unit will not start recording. Set VOR to H (high) or L (low) depending on the conditions.
* If you leave the unit after the tape has been wound or rewound, the batteries will be consumed rapidly. Be sure to depress xZ.
If the tape is completely wound or rewound while searching forward/ backward during playback (CUE/REVIEW), the CUE/REVIEW switch may not return to the center position when you release the switch. In this case, push back the switch to the center to start playback.

REC REC

go off light

go off

flash When batteries are new When batteries become weak Replace batteries
Make sure the tabs on both sides are not removed. Even if only the tab on the reverse side is removed, recording cannot be made.
To record on a single side Slide DIR. so that the REV indictor turns green. Recording will start form the side facing the unit (rever side). Note
Make sure the tab on the reverse side is not removed.
To increase the playback speed (M-830V only) Slide the FAST PB switch in the direction of the arrow. The playback speed will be increased. To return to the original speed, slide the FAST PB switch to the original position. At the end of the tape In the recording or playback mode, the tape stops at the end of the reverse side and the locked buttons will be released automatically (Automatic shut-off mechanism). After fast forward or rewind, be sure to set CUE/REVIEW back to the center.

M-730V/830V

SERVICE MANUAL
Ver 1.0 1999.04 Ver 1.1 1999. 01
US Model Canadian Model AEP Model E Model

Chinese Model

M-730V

Tourist Model

M-830V

Photo : M-830V

Model Name Using Similar Mechanism Tape Transport Mechanism Type

NEW MZ-730V-99

SPECIFICATIONS

MICROCASSETTETM-CORDER

MICROFILM
TABLE OF CONTENTS 1. GENERAL... 3 2. DISASSEMBLY
2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. Lid Assy, Cassette... 4 Lid, Battery Case... 4 Cabinet (Rear) Assy.. 5 Speaker Assy, Microphone.. 5 Main Board... 6 Mechanism Deck... 6 LED Unit.... 7 Head, Creamic (HRPE901, 902)... 7
3. MECHANICAL ADJUSTMENTS.. 8 4. ELECTRICAL ADJUSTMENTS. 8 5. DIAGRAMS
5-1. Block Diagram... 11 5-2. Printed Wiring Board... 13 5-3. Schematic Diagram... 15

6. EXPLODED VIEWS

6-1. Cabinet Section... 17 6-2. Mechanism Deck Section (1).. 19 6-3. Mechanism Deck Section (2).. 20
7. ELECTRICAL PARTS LIST.. 21
Notes on Chip Component Replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat.
Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering.

SECTION 1 GENERAL

VOL knob MIC jack EAR jack VOR switch REC/BATT lamp FAST PB switch (M-830V ONLY) DC IN 3V jack TAPE COUNTER CUE MARKER button (M-830V ONLY) i(Battery) lamp (M-830V ONLY)

! ! ! ! ! ! ! ! !

Microphone r(REC) button C PAUSE knob (Playback) button CUE/REVIEW knob TAPE SPEED select knob wp(Eject/Stop) button DIR c knob FWD/REV

SECTION 2 DISASSEMBLY

The equipment can be removed using the following procedure.
Lid assy, cassette Lid, battery case

Cabinet (rear) assy

Speaker assy, Microphone

Main board

Mechanism deck
Head, ceramic (HRPE901,902) LED unit
Note : Follow the disassembly procedure in the numerical order given.

2-1. LID ASSY, CASSETTE

Lid assy, cassette

wp(Eject/Stop) button

2-2. LID, BATTERY CASE

Lid, battery case

2-3. CABINET (REAR) ASSY
Note : When installing, fit the knobs and switches.
2 Four screws (B1.7 16) 1 Screw (B1.7 5)

5 Cabinet (rear) assy

3 Claw

Knob (PAUSE)

Knob (FR)

4 Claws

Switch (PAUSE)

Switch (TAPE SPEED)

2-4. SPEAKER ASSY, MICROPHONE
1 Unsolder the 2 places. 4 Unsolder the 2 places.

2 Two screws (B2 2.5)

3 Speaker assy

5 Microphone unit

8 Microphone

7 Mic cushion

2-5. MAIN BOARD

4 Two screws

1 Unsolder the 8 places.

6 Main board

3 Unsolder the 4 places.

2 Unsolder the 6 places.

2-6. MECHANISM DECK

4 Mechanism deck

Button (REC)

Button (PLAY)

3 Button (EJECT/STOP)

2-7. LED UNIT

Blacket (LED)
1 Three screws (1.7 2.3) tapping

LED unit

2-8. HEAD, CERAMIC (HRPE901, 902)
2 Arm (pinch roller) assy

3 M1.4, special head

4 M1.4, special head 1 Claw 5 Head, ceramic (HRPE901, 902)
SECTION 3 MECHANICAL ADJUSTMENTS

PRECAUTION

1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback/erase head pinch roller rubber belts capstan 2. Demagnetize the record/playback/erase head with a head demagnetizer. (Do not bring the head demagnetizer close to the erase head.) 3. Do not use a magnetized screwdriver for the adjustments. 4. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Power supply voltage : 3 Vdc TAPE SPEED switch : 2.4cm Torque Measurement Mode Forward Reverse Fast Forward Rewind Torque Meter CQ-102M CQ-102MR CQ-201M CQ-201M Meter Reading 5 to 10 g cm (0.07 to 0.140 oz inch) 5 to 10 g cm (0.07 to 0.140 oz inch) more than 30 g cm (more than 0.42 oz inch) more than 30 g cm (more than 0.42 oz inch)
SECTION 4 ELECTRICAL ADJUSTMENTS
Test Tape Type Signal Used for Tape Speed (cm/s) 2.4 1.2/2.4

S-2-A030A 3 kHz, 20 dB Head Azimuth Adjustment WS-kHz, 10 dB Tape Speed Adjustment
Record/Playback/Erase Head Azimuth Adjustment
Setting: VOL control : mechanical mid TAPE SPEED switch : 2.4cm/s VOR switch : OFF FAST PB switch : OFF Procedure: 1. Mode : Playback
test tape S-2-A030A (3 kHz, 20 dB) 16 set EAR jack (J101)

level meter

Tape Tension Measurement Mode Forward Reverse Tension Meter CQ-403M CQ-403MR Meter Reading more than 25 g (more than 0.35 oz) more than 25 g (more than 0.35 oz)
2. Turn the adjustment screw to obtain the maximum reading on level meter. Note: Several peaks may appear, but the maximum. Adjustment Location : First remove the cover (AZ).

Remove the cover (AZ)

Head azimuth adjustment screw (FWD)

Tape Speed Adjustment

Setting: VOL control : mechanical mid VOR switch : OFF FAST PB switch : ON (M-830V model only) Procedure: Reform 2.4 cm/s speed adjustment before 1.2 cm/s speed adjustment mode : playback
test tape WS-24: tape speed 1.2/2.4cm/s (3 kHz, 10 dB) 16 set digital frequency counter
Adjustment Location : First remove the plate, blind.

Remove the plate, blind.

EAR jack (J101)
1. Tape Speed : 2.4 cm/s Playback WS-24 (tape center part) and adjust RV601 so that reading on the digital frequency counter becomes 3,000 Hz. 2. Tape Speed : 1.2 cm/s Playback WS-24 (tape center part) and adjust RV602 so that reading on the digital frequency counter becomes 3,000 Hz. Specification Value: Tape Speed 1.2/2.4 cm/s Frequency counter 2,880 to 3,120 Hz
RV601 (2.4 cm/s) Speed adjustable resistors

RV602 (1.2 cm/s)

Frequency difference between the beginning and the end of the tapeshould be within 0.5%.

SECTION 5 DIAGRAMS

IC Block Diagrams IC101 LA4168ML
LED DRIVE GVN CONT P/R MUTE GVN GND PRE GND GVN OUT 16 GVN 2k 15 Vcc GVN Vref Vref OUT MIC VCC R, F OUT R/P SW PAUSE MIC IN EQ IN

PAUSE 2.2k

MIC VCC

20k REC

VOX R, F

VOX 300k

1 PRE NF

2 PRE OUT

3 REG IN

4 REG OUT

5 ALC CONT

6 VOX CONT

7 VOX DELAY

8 GNV SPEED UP

AUT STOP CONT

AUT STOP IN

PWR OUT1
IC501 MM1251M (M-830V model only)

HYS NC VCC VS

IC601 LB1877V
UOUT VREF OUT VCC VSP IN+ S/S

PWR OUT2

PWR IN

PWR GND

DRIVER
VREF + VOLTAGE UP CIRCUIT

VOUT WOUT

WB VB UB
TSD LOCKING PROTECT STARTUP DIR LOGIC STARTUP DET OSC WAVEFORM DET

REF V SPEED DET

CURRENT DET

5-1. BLOCK DIAGRAM

NF CONTROL Q103, 116 J101 MIC (PLUG IN POWER)

PRE NF MIC

REC/PB AMP IC101 (1/2) + PRE OUT EQ 2 + PB MIC VCC + R.F ALC VCC 15 B+ (3V) PAUSE + REC IN 3

28 ALC CONTROL Q101 29

MIC IN

RV101 VOL

S101-3 (REC/PB) 11 PWR IN
POWER AMP IC101 (2/2) 2 POWER AMP + S101-4 (REC/PB) PB POWER AMP REC SP901 SPEAKER MOTOR SERVO IC601 M-830V MODEL ONLY SPEED GVN CONT 20 GVN VREF 19 FAST PB SWITCH Q601 RV602 TAPE SPEED 1.2cm 12 VREF REF V BIAS 13 RV601 TAPE SPEED 2.4cm IN+ + SPEED DET CURRENT DET 15 WAVEFORM DET LOCKING PROTECT DR STARTUP DET STARTUP DIR LOGIC DRIVER OSC UOUT 20 VOUT 1 WOUT 2 B+ (+3V) PWR OUTJ102 EAR

MIC901 MIC

MIC VREF 27 26

VREF OUT MIC VCC

S102 VOR OFF L
5 S101-1 (REC/PB) MUTE SWITCH Q112 MUTE GEN Q111

ALC CONT

21 MUTE VREF 22

PB REC PAUSE SWITCH Q118

GVM OUT

M901 MOTOR

OFF VOX HRPE901 REC/PB/ERASE HEAD LED DRIVE 24 ON S601 FAST PB

S/S VSP

S101-3 (REC/PB) REC OUT VOR SWITCH QVOX DELAY VOX P/R P/R SW
(REC/PB) PB (ERASE) REC HRPE902 REC/PB/ERASE HEAD Q108 (REC/PB) (ERASE) 16 REC/PB SWITCH Q102 DIR SWITCH Q117 MUTE SWITCH Q119 REC MUTE Q120 1.2cm S602-2 TAPE SPEED 2.4cm

1.2cm S602-1 TAPE SPEED

S103 (POWER) CN101 DC IN 3V
23 DRY BATTERY SIZE "AA" (IED DESIGNATION R6) 2PCS, 3V INVERTER Q603

M-830V MODEL ONLY CUE MARKER
CUE MIX Q304 VOICE MIRROR SWITCH Q106 VOICE MIRROR DRIVE Q107

B+ (+3V)

BATT LED DRIVE Q105,109

Signal path : PB : REC

S603 PAUSE OFF
+ CUE OSC Q303 CUE SWITCH Q301,302 B+ (+3V) BATT LED SWITCH Q305 BATTERY LOW DET OUT 4 ICVCC BATT LED SWITCH Q502

S604 (DIR)

LED UNIT M-730V MODEL ONLY

REC BATT

REC/BATT
5-2. PRINTED WIRING BOARD

(SIDE-B)

(SIDE A)

E B E B

1-673-8961-673-896-
Semiconductor Location Ref. No. D101 IC101 IC501 IC601 Q101 Q102 Q103 Q104 Q105 Location B-3 E-4 E-6 C-4 G-4 F-3 E-5 D-5 C-10 Ref. No. Q106 Q107 Q108 Q109 Q111 Q112 Q116 Q117 Q118 Q119 Q120 Location D-6 D-6 G-12 D-6 E-3 E-3 E-5 F-12 G-6 D-6 F-12 Ref. No. Q301 Q302 Q303 Q304 Q305 Q501 Q601 Q6030 Location B-10 B-10 B-9 C-10 B-9 F-6 C-4 D-11 Note: X : parts extracted from the component side. : Through hole. b : Pattern from the side which enables seeing. Caution: Pattern face side: (SIDE B) Parts face side: (SIDE A) Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.
5-3. SCHEMATIC DIAGRAM Refer to page 10 for IC Block Diagrams.
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. C : panel designation. U : B+ Line. H : adjustment for repair. Power voltage is dc 3 V and fed with regulated dc power supply from battery terminal.
Voltage is dc with respect to ground under no-signal condition. no mark : PB ( ) : REC Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. Signal path. E : PB a : REC
M-730V/830V SECTION 6 EXPLODED VIEWS
NOTE: The mechanical parts with no reference number in the exploded views are not supplied. Items marked * are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. Ref. No. -XX and -X mean standardized parts, so they may have some difference from the original one. Color Indication of Appearance Parts Example : KNOB, BALANCE (WHITE). (RED) Parts Color Cabinets Color N N Accessories and packing materials are given in the last of this parts list. Abbreviation CND : Canadian model JEW : Tourist model Part No. A-3050-984-A A-3050-988-A X-3377-337-1 X-3377-343-1 3-031-649-01 3-010-503-01 3-669-481-07 3-031-645-01 3-031-653-01 1-418-390-11 1-418-391-11 3-031-652-01 3-318-382-31 3-034-792-01 3-031-656-01 3-031-655-01 3-031-654-01 3-704-197-31 3-036-882-01 3-034-687-01 Description LID ASSY, CASSETTE (730V) LID ASSY, CASSETTE (830V) CABINET (FRONT) SUB ASSY (830V) CABINET (FRONT) SUB ASSY (730V) KNOB(RV) SPRING(B), BATTERY COIL PIN(DIA.1X10), PARALLEL HOLDER, MIC CUSHION, MIC LED UNIT (830V) LED UNIT (730V) BRACKET (LED) SCREW (1.7), TAPPING SCREW (2X2.5), TAPPING (B) BUTTON (REC) BUTTON (PLAY) BUTTON (STOP) LOCK, SERRAT IB SPACER (JACK) TERMINAL (-), BATTERY Remark Ref. No. * SP901 MIC901 Part No. 3-034-686-01 3-831-441-99 A-3021-220-A A-3021-221-A X-3377-334-1 X-3377-335-1 X-3377-336-1 3-034-550-01 3-031-660-01 3-035-255-11 3-358-363-31 3-318-203-72 3-031-662-01 3-031-662-11 3-914-930-01 3-328-319-01 3-037-193-01 3-037-146-01 1-505-838-11 1-542-386-11 Description Remark TERMINAL (+), BATTERY SPACER, KNOB MAIN BOARD, COMPLETE (730V) MAIN BOARD, COMPLETE (830V) CABINET (REAR) ASSY (830V:US,CND,AEP,E) CABINET (REAR) ASSY (830V:JEW) CABINET (REAR) ASSY (730V) PLATE, SHIELD KNOB(FR) SCREW (1.7X16) PLATE, BLIND SCREW (B1.7X5), TAPPING LID,BATTERY CASE (830V) LID,BATTERY CASE (730V) CUSHION (BATTERY CASE LID) STRAP, HAND CUSHION (SP) CUSHION (A) SPEAKER (3.6cm) MICROPHONE, ELECTRET CONDENSER (MIC)

6-1. CABINET SECTION

not supplied

MIC901

6-2. MECHANISM DECK SECTION (1) (MZ-730V-99)

Ref. No. * 70 71

Part No. 3-331-007-21 3-350-989-01 3-028-961-01 3-028-929-01 3-028-940-02 3-028-938-01 3-578-224-00 X-3376-227-1 X-3376-228-1 3-029-634-01 X-3376-231-1 3-377-420-11 X-3376-230-1 3-028-955-01 X-3377-535-1
Description WASHER WASHER SPRING (BUTTON), COMPRESSION LEVER (POWER SW) LEVER (SRS) LEVER (SLIDE) WASHER LEVER (F/R) ASSY LEVER (TU) ASSY BEARING FLYWHEEL ASSY BELT LIMITTER ASSY SPRING (LOCK), TENSION LEVER (LOCK) ASSY

Remark

Ref. No. 88
Part No. 3-321-483-11 3-028-928-01 3-028-964-01 4-926-562-01 3-028-927-01 3-028-920-01 X-3376-236-1 3-029-635-01 3-029-639-01 3-028-932-01 3-028-933-01 3-028-905-01 3-167-330-01 3-028-942-01 3-028-941-01
Description RING, RETAINING LEVER (EJECT) SPRING (SLIDER), TORSION WASHER, STOPPER LEVER (STOP) LEVER (REVERSE SWITCH) LEVER (CLAW DETECTION R) ASSY SPRING (LEVER DIR), TORSION SPRING, TENSION LEVER (JOINT) LEVER (DIR) GEAR(S-OFF), CAM WASHER SPRING (D-LOCK), TORSION LEVER (DIR-LOCK)
4-992-239-01 WASHER (A) 3-028-967-01 LEVER (PAUSE RELEASE) 3-028-954-01 SPRING (SW LEVER), TENSION
3-028-906-01 GEAR(REVERSE), CAM X-3376-224-1 LEVER (REC) ASSY
6-3. MECHANISM DECK SECTION (2) (MZ-730V-99)

101 112

109 103

HRPE901

110 105

101 102

117 103

HRPE902

118 101

Ref. No. 113

Part No. 3-703-816-31 3-703-816-73 3-028-960-01 3-028-909-01 3-028-965-01 X-3376-232-1 X-3376-235-1 3-321-483-11 1-548-579-41 X-3376-726-1
Description SCREW (M1.4), SPECIAL HEAD SCREW (M1.4), SPECIAL HEAD SPRING (AZIMUTH), COMPRESSION GUIDE (N), TAPE SPRING (PINCH ARM), TORSION LEVER (PLAY) ASSY ARM(PINCH ROLLER) ASSY RING, RETAINING COUNTER, TAPE (SMALL TYPE) CHASSIS (COMP) ASSY (R)

Ref. No. 118

Part No. 3-028-922-01 X-3376-234-1 3-028-962-01 3-028-910-01 3-028-921-01
Description BRACKET (N), HEAD BRACKET (R) ASSY, HEAD SPRING, TORSION GUIDE (R), TAPE LEVER (HEAD ROTARY)
119 3-029-808-3-365-053-01 M901 1-763-236-11 HRPE901 1-500-593-11 HRPE902 1-500-594-11
BRACKET (MOTOR) SHEET (BA), ADHESIVE MOTOR, DC (REEL/CAPSTAN)(WITH PULLY) HEAD, CERAMIC (REC/PB/ERASE) HEAD, CERAMIC (REC/PB/ERASE)

3-343-948-01 BELT

SECTION 7 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 Items marked * are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. Ref. No. Part No. Description SEMICONDUCTORS In each case, u : , for example: uA. : A. uPA. : PA. uPB. : PB. uPC. : PC. uPD. : PD. CAPACITORS uF : F COILS uH : H When indicating parts by reference number, please include the board. Abbreviation CND : Canadian model EE : East European model CH : Chinese model JEW : Tourist model

1-216-097-91 RES,CHIP 1-216-057-00 METAL CHIP 1-216-129-00 METAL CHIP 1-216-113-00 METAL CHIP

R305 R306 R307 R308 R309

1-216-085-00 METAL CHIP 1-216-065-91 RES,CHIP 1-216-081-00 METAL CHIP 1-216-049-91 RES,CHIP 1-216-057-00 METAL CHIP

33K 4.7K 22K 1K 2.2K

5% 5% 5% 5% 5%
Ref. No. R311 R312 R501 R502 R505 Part No. Description 0 4.7K 1.5K 5% 5% 5% 5% Remark (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W (830V) 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W (830V) 1/10W (830V) 1/10W 1/10W (830V) 1/10W 1/10W 1/10W Ref. No. 0 S101 S102 S103 S601 S602 S603 S604 1-572-964-11 1-692-605-31 1-762-594-41 1-572-922-31 1-571-277-51 Part No. Description < SWITCH > SWITCH, SLIDE SWITCH, SLIDE (VOR) SWITCH, PUSH (1 KEY) (POWER) SWITCH, SLIDE (FAST PB) (830V) SWITCH, SLIDE (TAPE SPEED) Remark 1-216-295-91 RES,CHIP 1-216-065-91 RES,CHIP 1-216-037-00 METAL CHIP 1-216-021-00 METAL CHIP 1-216-053-00 METAL CHIP
1-572-922-31 SWITCH, SLIDE (PAUSE) 1-572-688-11 SWITCH, PUSH (1 KEY) (DIR) < THERMISTOR(POSITIVE) >

R506 R507 R508 R509 R510

1-216-049-91 RES,CHIP 1-216-089-91 RES,CHIP 1-216-037-00 METAL CHIP 1-216-073-00 METAL CHIP 1-216-089-91 RES,CHIP

1K 47K 330 10K 47K

THP601 1-810-794-11 THERMISTOR, POSITIVE ************************************************************ MISCELLANEOUS *************** LED UNIT (830V) LED UNIT (730V) HEAD, CERAMIC (REC/PB/ERASE) HEAD, CERAMIC (REC/PB/ERASE) MOTOR, DC (REEL/CAPSTAN)(WITH PULLY)
R511 R512 R601 R602 R603 R605 R606 R607 R608 R609 R610 R611 R612 R613 R614
1-216-105-91 RES,CHIP 1-216-109-00 METAL CHIP 1-216-097-91 RES,CHIP 1-216-073-00 METAL CHIP 1-216-065-91 RES,CHIP 1-216-121-91 1-216-121-91 1-216-121-91 1-216-085-91 1-216-073-00 1-216-097-91 1-216-077-00 1-216-065-91 1-216-081-00 RES,CHIP RES,CHIP RES,CHIP RES,CHIP METAL CHIP RES,CHIP METAL CHIP RES,CHIP METAL CHIP
220K 330K 100K 10K 4.7K 1M 1M 1M 33K 10K 100K 15K 4.7K 22K 100K
5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
10 1-418-390-1-418-391-11 HRPE901 1-500-593-11 HRPE902 1-500-594-11 M901 1-763-236-11
MIC901 1-542-386-11 MICROPHONE, ELECTRET CONDENSER (MIC) SP901 1-505-838-11 SPEAKER (3.6cm) ************************************************************ ACCESORIES & PACKING MATERIALS ******************************* CASE,CARRYING (730V:AEP,EE,830V) COVER(AZIMUTH) MANUAL, INSTRUCTION (JAPANESE) (JEW) MANUAL, INSTRUCTION (ENGLISH) (US,CND) MANUAL, INSTRUCTION (FRENCH) (CND,AEP)