4-130-433-13(1)

Mini HI-FI Component System
Operating Instructions MHC-GTZ5 MHC-GTZ4 / GTZ4i MHC-GTZ3 / GTZ3i MHC-GTZ2 / GTZ2i LBT-GTZ4i

2009 Sony Corporation

WARNING
To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. To reduce the risk of fire, do not cover the ventilation opening of the apparatus with newspapers, tablecloths, curtains, etc. Do not place the naked flame sources such as lighted candles on the apparatus. To reduce the risk of fire or electric shock, do not expose this apparatus to dripping or splashing, and do not place objects filled with liquids, such as vases, on the apparatus. As the main plug is used to disconnect the unit from the mains, connect the unit to an easily accessible AC outlet. Should you notice an abnormality in the unit, disconnect the main plug from the AC outlet immediately. Do not install the appliance in a confined space, such as a bookcase or built-in cabinet. Do not expose batteries or apparatus with battery-installed to excessive heat such as sunshine, fire or the like. Excessive sound pressure from earphones and headphones can cause hearing loss. The unit is not disconnected from the mains as long as it is connected to the AC outlet, even if the unit itself has been turned off. CAUTION The use of optical instruments with this product will increase eye hazard.
Notice for the customers in the United States Owners Record
The model and serial numbers are located on the rear of the unit. Record these numbers in the space provided below. Refer to them whenever you call upon your Sony dealer regarding this product. Model No. Serial No.
This symbol is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. This symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. The following FCC statement applies only to the version of this model manufactured for sale in the U.S.A. Other versions may not comply with FCC technical regulations.
Except for the customers in the United States
This appliance is classified as a CLASS 1 LASER product. This marking is located on the rear exterior.
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.
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 10) Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. 11) Only use attachments/accessories specified by the manufacturer. 12) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

CAUTION

You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. 13) Unplug this apparatus during lightning storms or when unused for long periods of time. 14) Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

For customers in Australia
WALKMAN and WALKMAN logo are registered trademarks of Sony Corporation. MICROVAULT is a trademark of Sony Corporation. MPEG Layer-3 audio coding technology and patents licensed from Fraunhofer IIS and Thomson. Windows Media is a registered trademark of Microsoft Corporation in the United States and/or other countries. Memory Stick is a trademark of Sony Corporation. iPod is a trademark of Apple Inc., registered in the U.S. and other countries.

Note on DualDiscs

A DualDisc is a two sided disc product which mates DVD recorded material on one side with digital audio material on the other side. However, since the audio material side does not conform to the Compact Disc (CD) standard, playback on this product is not guaranteed.
Music discs encoded with copyright protection technologies
This product is designed to playback discs that conform to the Compact Disc (CD) standard. Recently, various music discs encoded with copyright protection technologies are marketed by some record companies. Please be aware that among those discs, there are some that do not conform to the CD standard and may not be playable by this product.

About this manual

The instructions in this manual are for models MHC-GTZ5, MHC-GTZ4 / GTZ4i, MHC-GTZ3 / GTZ3i, MHC-GTZ2 / GTZ2i and LBT-GTZ4i. In this manual, the MHC-GTZ5 is used for illustration purposes unless stated otherwise. The MHC-GTZ5 consists of: Unit HCD-GTZ5 Speaker System Front speakers SS-GTZ5M Subwoofer SS-WGZ5M The MHC-GTZ4 / GTZ4i consists of: Unit HCD-GTZ4 / GTZ4i Speaker System European model only Front speakers SS-GTZ4M Subwoofer SS-WGZ4M Other models Front speakers SS-GTZ4 Subwoofer SS-WGZ4 The MHC-GTZ3 / GTZ3i consists of: Unit HCD-GTZ3 / GTZ3i Speaker System Asian models Front speakers SS-GTZ3 Subwoofer SS-WGZ4 European model only (Except United Kingdom model only) Front speakers SS-GTZ3M Subwoofer SS-WGZ3M Other models Front speakers SS-GTZ3 Subwoofer SS-WGZ3
The MHC-GTZ2 / GTZ2i consists of: Unit HCD-GTZ2 / GTZ2i Speaker System European model only Front speakers SS-GTZ3M Other models Front speakers SS-GTZ3 The LBT-GTZ4i consists of: Unit HCD-GTZ4i Speaker System Front speakers SS-GTZ4A Subwoofer SS-WGZ3A

Table of Contents

About this manual.6 Guide to parts and controls..8

Other Operations

Creating your own program. 33 Program Play Presetting radio stations. 34 Using the Radio Data System (RDS). 35 (European model only) Creating your own sound effect.. 35 Singing along.. 36 Using the Timers.. 36

Getting Started

Hooking up the system securely..14 Setting the clock..16

Basic Operations

Playing an AUDIO CD/MP3 disc...17 Listening to the radio..19 Transferring onto an USB device..20 Listening to music of an USB device..25 Playing the iPod..28 (MHC-GTZ4i/GTZ3i/GTZ2i and LBT-GTZ4i only) Using optional audio components..30 Adjusting the sound.30 Changing the display.31

Additional Information

Troubleshooting. 39 Messages.. 45 Precautions.. 47 Specifications.. 48 Compatible USB devices with this system.. 52 Compatible iPod models with this system.. 54
Guide to parts and controls
This manual mainly explains operations using the unit, but the same operations can also be performed using the buttons on the remote having the same or similar names.

Unit Front view

1 wg wf wd ws wa 6

7 w; ql *qk qg qj

9 q; qa qs qd
* MHC-GTZ5, MHC-GTZ4 / GTZ4i, MHC-GTZ3 / GTZ3i and LBT-GTZ4i only.
1 "/1 (on/standby) (pages 16, 39, 45) Press to turn on the system. The STANDBY indicator lights up when the system is turned off. B Display (page 31) C REC TIMER (page 38) Press to set the Recording Timer. D PRESET EQ (pages 30, 35), GROOVE (page 30), SURROUND (page 30) Press to select a sound effect. EQ BAND (page 35) Press to select the frequency band. E MASTER VOLUME (pages 17, 25, 28, 30, 31, 39) Turn to adjust the volume. F +/ (select folder) (pages 17, 26) Press to select a folder. m/M (rewind/fast forward) (pages 17, 26) Hold down to find a point in a track or file. N (play) (pages 17, 25, 28, 33, 34, 40, 43) Press to start playback. X (pause) (pages 17, 26, 29) Press to pause playback. x (stop) (pages 17, 22, 26) Press to stop playback.
TUNING +/ (page 19) Press to tune in the station you want.

qg qf qd qs qa q; 2

V/v/b/B (pages 16, 37)
Press to select menu items of the system and iPod. (pages 16, 33, 37) Press to enter the setting and select the content. F TOOL MENU Press to return to previous menu of the iPod. G./> (go back/go forward) (pages 17, 26, 33) Press to select a track or file. +/ (select folder) (pages 17, 26) Press to select a folder. +/ (tuning) (page 19) Press to tune in the station you want. m/M (rewind/fast forward) (pages 17, 26) Press to find a point in a track or file. N (play) (pages 17, 25, 28, 33, 34, 40, 43) Press to start playback. CLEAR (page 34) Press to delete the last step from the program list. X (pause) (pages 17, 26, 29) Press to pause playback. x (stop) (pages 17, 19, 22, 26) Press to stop playback.
1 "/1 (on/standby) (page 16) Press to turn on the system. B EQ (page 30, 35) Press to select a preset EQ effect. C DISC SKIP/USB SELECT (pages 17, 27, 33) Press to select a disc. Press to select the USB device connected to the USB A or B port. D TIMER MENU (pages 16, 37, 38) Press to set the clock and the timers.
H FUNCTION +/ (pages 19, 22, 23, 25, 26, 30, 33) Press to select a function. I VOLUME +/* (pages 17, 19, 25, 28, 30, 37) Press to adjust the volume.
* The VOLUME + button has a tactile dot. Use the tactile dot as a reference when operating the system.
Remote RM-AMU053 (Other models)

qg qf qd qs

J O RETURN (pages 18, 26) Press to return to the parent folder. Press to exit search mode. Press to return to previous menu of the iPod. K TUNER MEMORY (page 34) Press to preset the radio station. L PLAY MODE/TUNING MODE (pages 19, 27, 33, 34) Press to select the play mode of an AUDIO CD, MP3 disc or an optional USB device. Press to select the tuning mode. M REPEAT/FM MODE (pages 17, 20, 26) Press to listen to a disc, an USB device, a single track or file repeatedly. Press to select the FM reception mode (monaural or stereo). N SLEEP (page 36) Press to set the Sleep Timer. O DISPLAY (pages 16, 31, 35, 39) Press to change the information on the display.

D Front speakers

Be sure to insert the connector straight into the terminals.

FRON T SP

E VOLTAGE SELECTOR
AM loop antenna Extend the FM lead antenna horizontally
For models with a voltage selector, set VOLTAGE SELECTOR to the local power line voltage.

F Power

Connect the power cord to a wall socket. The demonstration appears in the display. If the plug does not fit the wall socket, detach the supplied plug adaptor (only for models equipped with an adaptor).
Keep the antennas away from the speaker cords, the power cord and the USB cable to avoid picking up noise.

B PC IN L/R jack

Use an audio cord (not supplied) to connect the audio output of the optional audio component to these jacks. You can then output audio through this system.
Attaching the speaker pads
Attach the supplied speaker pads to the bottom of the front speakers and subwoofer to prevent slipping. Front speakers: 4 pads for each speaker Subwoofer: 4 pads (MHC-GTZ5, MHC-GTZ4 / GTZ4i, MHC-GTZ3 / GTZ3i and LBT-GTZ4i only)
C Subwoofer (MHC-GTZ5, MHC-GTZ4 / GTZ4i, MHC-GTZ3 / GTZ3i and LBT-GTZ4i only)

SUBW OOFE R

Purple

Using the remote

Slide and remove the battery compartment lid, then, insert the two supplied R6 (size AA) batteries, E side first, matching the polarities shown below.

Setting the clock

You cannot set the clock in Power Saving Mode. Use the buttons on the remote for this operation.
1 Press "/1 to turn on the system. 2 Press CLOCK/TIMER SET
(RM-AMU053) or TIMER MENU (RM-AMU054). If PLAY SET appears on the display, press./> (RM-AMU053) or V/v (RM-AMU054) repeatedly to select CLOCK SET and then press ENTER (RM-AMU053) or (RM-AMU054).
Do not mix an old battery with a new one or mix different types of batteries. If you do not use the remote for a long period of time, remove the batteries to avoid damage from battery leakage and corrosion.
3 Press./> (RM-AMU053) or
V/v (RM-AMU054) repeatedly to set the hour, and then press ENTER (RM-AMU053) or (RM-AMU054).

When carrying the unit

(Normal Play)

The MP3 files in the folder on the disc you have selected in original order. For AUDIO CDs, this play mode performs the same operation as 1 DISC play mode. The tracks or files on all discs in random order. The tracks or files on the disc you have selected in random order. The MP3 files in the folder on the disc you have selected in random order. For AUDIO CDs, this play mode performs the same operation as 1 DISC SHUF play mode. The tracks or files on all disc in the order you want them to be played back (see Creating your own program on (page 33)).
Press one of the DISC buttons (Automatically Source Selection). Press DISC SKIP/ EX-CHANGE.
ALL DISC SHUF* (Shuffle Play) 1 DISC SHUF* (Shuffle Play) SHUF* (Shuffle Play)
The elapsed playing time may not be displayed correctly depending on the MP3 files. 2) When or SHUF is selected for MP3 files. 3) Playback repeatedly until you stop it. You cannot select REP and ALL DISC SHUF at the same time. 4) A track or file is played back repeatedly until you stop playback.

PGM (Program Play)

To change the play mode
Press PLAY MODE on the remote repeatedly when playback is stopped. You can select the following play mode.

Select To play back

* Each time you perform Shuffle Play, the playing order may differ. If you turn off the system in shuffle play mode, the system changes the play mode back to normal play mode.
ALL DISC (Normal Play) 1 DISC (Normal Play)
The tracks or files on all discs in original order. The tracks or files on the disc you have selected in original order.

Notes on playing discs

The following discs/situations can increase the time it takes to start playback: a disc recorded with a complicated tree structure. a disc recorded in Multi Session. when the files in another folder have just been played back. Do not save other types of files or unnecessary folders on an MP3 disc. The system can only play MP3 files that have a file extension of.mp3.
The system can recognize up to 999 folders (including root folder). 999 MP3 files. 150 MP3 files on a single folder. 8 folder levels (tree structure of files). Compatibility with all MP3 encoding/writing software, recording device, and recording media cannot be guaranteed. Incompatible MP3 discs may produce noise or interrupted audio or may not play at all. The disc will not play if it has not been correctly finalized. CD-TEXT information is not supported.

Listening to the radio

Use buttons on the remote for the operation.

1 Select FM or AM.

Press TUNER/BAND (RM-AMU053) or press FUNCTION +/ (RM-AMU054) repeatedly.
Notes on playing multisession discs
This system can play back Multi Session discs when an MP3 file is contained in the first session. Any subsequent MP3 files recorded in later sessions can also be played back. If the first session is recorded in AUDIO CD format, only the first session will be played back.
2 Press TUNING MODE repeatedly
until AUTO lights up in the display.
3 Tune in the station you want.
Scanning stops automatically when a station is tuned in, and then TUNED and ST (for stereo programs only) light up in the display. You can also use TUNING +/ on the unit.
GROOVE 3 REC ST AUTO TUNED
If TUNED does not light up and scanning does not stop, see To tune in a station with a weak signal below.
4 Press VOLUME +/ to adjust the

volume.

To stop automatic scanning

Press x.

To tune in a station with a weak signal
Transferring onto an USB device
You can transfer music from a sound source to an optional USB device by connecting it to the B port on the unit. The audio format of files transferred by this system is MP3. For transferring from USB A to USB B you can also transfer WMA and AAC file. When transferring from audio files, the file size is the same as the original file. See Compatible USB devices with this system (page 52) for a list of USB devices that can be connected to this system. (MHC-GTZ4i / GTZ3i / GTZ2i and LBT-GTZ4i only) You cannot transfer the music to the iPod which is connected to the B port. USB transferring and erasing is disabled while the disc tray is open.
1 Press TUNING MODE repeatedly
until AUTO and PRESET disappear from the display.
2 Press +/ repeatedly to tune in the
station you want. You can also use TUNING +/ on the unit.
To reduce static noise on a weak FM stereo station
Press FM MODE on the remote repeatedly until MONO lights up in the display. There will be no stereo effect, but the reception will improve.
CD-USB Synchronized Transfer
You can easily transfer an entire disc onto an USB device.
1 Connect a transferable USB
device to the shown below. B port as

USB device

When the USB cable connection is necessary, connect the USB cable supplied with the USB device to be connected. Refer to the operating instructions supplied with the USB device to be connected for details on the operation method.

Press USB SELECT on the remote repeatedly to select USB A.
remote repeatedly in stop mode to select the play mode. The play mode automatically changes to 1 USB if you start transferring in ALL USB, ALL USB SHUF, 1 USB SHUF or PGM mode (when no file is programmed). The play mode automatically changes to if you start transferring in SHUF mode. For details about the play mode, see To change the play mode (page 27).
If distortion happen during transferring, reduce the microphone level. A new MP3 file is created automatically after approximately 1 hour of transferring. Transferring stops automatically when you change the function or tuner band.

4 Press REC to

Transferring starts from the beginning of the file when DONT REMOVE appears in the display. When the transferring is completed, the audio file continues to play.
(MHC-GTZ4i / GTZ3i / GTZ2i and LBT-GTZ4i only) You cannot transfer the audio files from the iPod which is connected to the A port.
Transferring starts when DONT REMOVE appears in the display. When the transferring is completed, both USB device stop automatically.
Transferring a single audio file during playback from an USB device to another USB device (USB-USB REC1 Transferring)
You can easily transfer the audio file on an USB device that is currently being played back onto another USB device.
To select the playback source or transferring destination on the Sony Ericsson mobile phone (W302, W595, W760i, W890i, W902, W910i only)
When listening to music from a Sony Ericsson mobile phone or when transferring music from this system to the mobile phone, you can select the playback source or transferring destination as follows: internal memory of the mobile phone. Memory Stick
device to the unit. B port on the
USB (Press USB (RM-AMU053) or press FUNCTION +/ (RM-AMU054) repeatedly on the remote), then connect the USB device you want to transfer to the A port.
1 Connect the mobile phone to the
B port on the unit and press USB B.
3 Select the audio file you want to
transfer, then start play.
2 Press OPTIONS on the unit in

stop mode.

while the selected audio file is being played back.
3 Turn OPERATION DIAL to select

USB MEM SEL.

The memory number of the mobile phone appears in the display but varies depending on the specification of the mobile phone.
You can select a Memory Stick when the selected memory number is as follows:

Model Name Memory Number

Analog Transferring
Transfer- Folder name ring source FM AM PC TUAM00013) EXPC00013) File name

Recording Timer:

You can transfer music from a preset radio station into an USB device at a specified time.
5 Use the same procedure as in
step 4 to set the time to stop playing or transferring.
1 Prepare the sound source.

Play Timer

6 Select the sound source or

prepare the USB device.

Prepare the sound source, and then press VOLUME +/ to adjust the volume. To start from a specific track or file, create your own program (page 33).

Recording Timer

Tune in the preset radio station (page 34).
Press./> (RM-AMU053) or v/V (RM-AMU054) repeatedly until the sound source you want appears, and then press ENTER (RM-AMU053) or (RM-AMU054). The display shows the timer settings.

2 Press CLOCK/TIMER SET

(RM-AMU053) or TIMER MENU (RM-AMU054).
Connect a transferable USB device to the B port on the unit. The display shows the timer settings.
3 Press./> (RM-AMU053)
or v/V (RM-AMU054) repeatedly to select PLAY SET or REC SET, and then press ENTER (RM-AMU053) or (RM-AMU054). ON appears, and the hour indication flashes.
7 Press "/1 to turn off the system.
To set the Recording Timer using the controls on the unit (REC TIMER)
The system turns on before the preset time. If the system is turned on at the preset time or if STANDBY flashes in the display, the Play Timer and the Recording Timer will not play or transfer. The Play Timer setting remains as long as the setting is not canceled manually. The volume is reduced to minimum during the Recording Timer. The Recording Timer is canceled automatically after the Recording Timer has been activated. The Play Timer may not be activated depending on the status of the connected iPod. Be sure that the iPod is not playing when using the Play Timer.
1 Tune in the preset station

(page 34).

2 Press REC TIMER.
ON appears, and the hour indication flashes.
3 Turn OPERATION DIAL to set the
hour, then press ENTER. The minute indication flashes. Use the procedure above to set the minutes.
4 Use the same procedure as in step
3 to set the time to stop recording. The display shows the timer settings.
5 Connect a transferable USB device
to the B port on the unit.
6 Press "/1 to turn off the system.
To activate or check the timer again
Unit: Press REC TIMER, turn OPERATION DIAL until REC SELECT appears, and then press ENTER. RM-AMU053: Press CLOCK/TIMER SELECT, press./> repeatedly until PLAY SELECT or REC SELECT appears, and then press ENTER. RM-AMU054: Press TIMER MENU to select TIMER SELECT, then press. Press v/V repeatedly until PLAY SELECT or REC SELECT appears, and then press.

To cancel the timer

Repeat the same procedure as above until TIMER OFF appears, and then press ENTER (RM-AMU053 or on the unit) or (RM-AMU054).

There is no microphone sound.
Turn MASTER VOLUME clockwise (or press VOLUME + repeatedly on the remote) or turn MIC LEVEL clockwise to adjust the microphone volume. Make sure the microphone is connected to the MIC jack correctly.
Sound comes from one channel, or the left and right volumes are unbalanced.

Disc player

The disc tray does not open and LOCKED appears in the display.
Place the speakers as symmetrically as possible. Connect only the supplied speakers.
There is severe hum or noise.
Consult your nearest Sony dealer or local authorized Sony service facility.
The disc tray does not close.
A TV or VCR is placed too close to the unit. Move the unit away from the TV or VCR. Move the unit away from the source of noise. Connect the unit to a different wall outlet. Install a noise filter (commercially available) to the power cord. Turn off surrounding electrical equipment.
The timer does not function.
Load the disc correctly. Always close the disc tray by pressing Z OPEN/CLOSE. Do not forcibly push the disc tray to close it as this may cause a malfunction.

The disc does not eject.

Check the timer setting and set the correct time (page 36). Cancel the Sleep Timer function (page 36). You cannot select the Play Timer and the Recording Timer at the same time.
The remote does not function.
You cannot eject the disc during CD-USB Synchronized Transfer, or REC1 Transferring. Press x to cancel the transferring, then press Z OPEN/CLOSE to eject the disc. Consult your nearest Sony dealer.

Playback does not start.

Remove the obstacles between the remote and the unit. Move the remote closer to the unit. Point the remote at the units sensor. Replace the batteries (R6/size AA). Move the unit away from the fluorescent light.
There is acoustic feedback.
Open the disc tray and check whether a disc is loaded. Wipe the disc clean (page 47). Reload the disc. Load the disc that this system can play back (page 47). Load the disc on the disc tray with the label side facing up. Remove the disc and wipe away the moisture on the disc, then leave the system turned on for a few hours until the moisture evaporates. Press N to start playback.

The sound skips.

Reduce the volume. Move the microphone away from the speakers or change the direction of the microphone.
Wipe the disc clean (page 47). Reload the disc. Move the unit to place without vibration (e.g., on top of a stable stand). Move the speakers away from the unit, or place them on seperate stands. When you listen to a track with bass sounds at high volume, the speaker vibration may cause the sound to skip.
Playback does not start from the first track.
You cannot start transferring to an USB device.
The system is in Program Play or Shuffle Play mode. Press PLAY MODE on the remote repeatedly until ALL DISC, 1 DISC or lights up in the display.

Erroneous display.

The data stored in the USB device may have been corrupted, perform the transferring again. The character code that can be displayed by this system are as follows: Upper cases (A to Z) Numbers (0 to 9) Symbols (< > * +, ? / [ ] \ _) Other characters may not be displayed correctly.
The USB device is not recognized.
MP3 files in MP3 PRO format cannot be played back. Some AAC files may not be played back correctly. WMA files in Windows Media Audio Lossless and Professional format cannot be played back. USB device formatted with file systems other than FAT16 or FAT32 are unsupported.* In case multiple partitions exist in USB device that is being used, files may not be played. Playback is possible up to 8 levels. The number of folders has exceeded 1000. The number of files in a folder has exceeded 150. The number of files in a USB device has exceeded 3000. Files that are encrypted or protected by passwords, etc. cannot be played back.
* This system supports FAT16 and FAT32, but some USB device may not support all of these FAT. For details, refer to the operating instruction of each USB device or contact the manufacturer.
Turn off the system and reconnect the USB device, then turn on the system. Connect the supported USB device (page 52). The USB device does not work properly. Refer to the USB device operating instruction on how to deal with this problem.

Play does not start.

Turn off the system and reconnect the USB device, then turn on the system. Connect the supported USB device (page 52). Press N to start play.
Make sure the iPod is connected securely. Make sure the iPod is playing music. Adjust the volume. Depending on the contents of the iPod, it may take time to start playback. You are using an unsupported iPod. See Compatible iPod models with this system (page 54) for the supported device types.

The sound is distorted.

Meter display is turned off.
Reduce the volume. Set the EQ setting of the iPod to Off or Flat.
The iPod can not be charged.
Make sure the iPod is connected securely.
MTR POINTER and M-BACKLIGHT are set to OFF in the OPTIONS menu. Select other settings. Meter mode is set to METER OFF. Press METER MODE on the unit repeatedly to select other modes.
Meter display is flashing.
Severe hum or noise, or stations cannot be received. (TUNED or ST flashes on the display.)
Connect the antenna properly. Find a location and an orientation that provide good reception, and then set up the antenna again. Keep the antennas away from the speaker cords, the power cord and the USB cable to avoid picking up noise. Connect a commercially available external antenna. Consult your nearest Sony dealer if the supplied AM antenna has come off the plastic stand. Turn off nearby electrical equipment.

Discs that this system CANNOT play
CD-ROM CD-R/CD-RW other than those recorded in AUDIO CD format or MP3 format conforming to ISO9660 Level 1/Level 2, Joliet in the expansion format CD-R/CD-RW recorded in multisession that have not ended by closing the session CD-R/CD-RW of poor recording quality, CD-R/CD-RW that have scratches or are dirty, or CD-R/CD-RW recorded with an incompatible recording device CD-R/CD-RW which is finalized incorrectly Discs containing files other than MPEG 1 Audio Layer-3 (MP3) files Discs of non-standard shape (for example, heart, square, star) Discs that have adhesive tape, paper, or sticker attached to them Rental or used discs with attached seals where the glue extends beyond the seal Discs that have labels printed using ink that feels tacky when touched

On heat buildup

Heat buildup on the unit during operation is normal and is not a cause for alarm. Do not touch the cabinet if it has been used continuously at a high volume because the cabinet may have become hot. Do not obstruct the ventilation holes.

Notes on discs

Before playing, wipe the disc with a cleaning cloth from the center out to the edge. Do not clean discs with solvents, such as benzine thinner, or commercially available cleaners or anti-static spray intended for vinyl LPs. Do not expose discs to direct sunlight or heat sources such as hot air ducts, nor leave it in a car parked in direct sunlight.

On the speaker system

This speaker system is not magnetically shielded, and the picture on nearby TV sets may become magnetically distorted. In this situation, turn off the TV, wait 15 to 30 minutes, and turn it back on. If there is no improvement, move the speakers far away from the TV.

Cleaning the cabinet

Clean this system with a soft cloth slightly moistened with a mild detergent solution. Do not use any type of abrasive pad, scouring powder, or solvent, such as thinner, benzine, or alcohol.

On safety

The unit is not disconnected from the mains as long as it is connected to the AC outlet, even if the unit itself has been turned off. Completely disconnect the power cord (mains lead) from the wall socket (mains) if it is not going to be used for an extended period of time. When unplugging the unit, always grip the plug. Never pull the cord itself.

Specifications

AUDIO POWER SPECIFICATION
POWER OUTPUT AND TOTAL HARMONIC DISTORTION: (LBT-GTZ4i only) With 6 ohm loads, both channels driven, from 120 Hz 10 kHz; rated 110 watts per channel minimum RMS power, with no more than 0.7% total harmonic distortion from 250 miliwatts to rated output.

Amplifier section

MHC-GTZ5 The following are measured at Mexican model: AC 127 V, 60 Hz European model: AC 230 V, 50 Hz Other models: AC 120, 220, 240 V, 50/60 Hz Front speaker Power output (rated): 110 W + 110 W (at 6 , 1 kHz, 1% THD) RMS output power (reference): 200 W + 200 W (per channel at 6 , 1 kHz, 10% THD) Subwoofer RMS output power (reference): 200 W (at 6 , 100 Hz, 10% THD) MHC-GTZ4 / GTZ4i Brazilian model only The following are measured at AC 127 or 220 V 60 Hz Front speaker RMS output power (reference): 125 W + 125 W (at 6 , 1 kHz, 10% THD) Subwoofer RMS output power (reference): 150 W (at 6 , 100 Hz, 10% THD)

Other models The following are measured at Mexican model: AC 127 V, 60 Hz European model: AC 230 V, 50 Hz Other models: AC 120, 220, 240 V, 50/60 Hz Front speaker Power output (rated): 90 W + 90 W (at 6 , 1 kHz, 1% THD) RMS output power (reference): 155 W + 155 W (per channel at 6 , 1 kHz, 10% THD) Subwoofer RMS output power (reference): 150 W (at 6 , 100 Hz, 10% THD) MHC-GTZ3 / GTZ3i Brazilian model only The following are measured at AC 127 or 220 V 60 Hz Front speaker RMS output power (reference): 100 W + 100 W (at 6 , 1 kHz, 10% THD) Subwoofer RMS output power (reference): 130 W (at 6 , 100 Hz, 10% THD) Other model The following are measured at Mexican model: AC 127 V, 60 Hz European model: AC 230 V, 50 Hz Other models: AC 120, 220, 240 V, 50/60 Hz Front speaker Power output (rated): 75 W + 75 W (at 6 , 1 kHz, 1% THD) RMS output power (reference): 135 W + 135 W (per channel at 6 , 1 kHz, 10% THD) Subwoofer RMS output power (reference): 130 W (at 6 , 100 Hz, 10% THD)
MHC-GTZ2 / GTZ2i Brazilian model only The following are measured at AC 127 or 220 V 60 Hz RMS output power (reference): 100 W + 100 W (at 6 , 1 kHz, 10% THD) Other models The following are measured at Mexican model: AC 127 V, 60 Hz European model: AC 230 V, 50 Hz Other models: AC 120, 220, 240 V, 50/60 Hz Front speaker Power output (rated): 60 W + 60 W (at 6 , 1 kHz, 1% THD) RMS output power (reference): 100 W + 100 W (per channel at 6 , 1 kHz, 10% THD) LBT-GTZ4i The following are measured at AC 120 V 60 Hz Front speaker RMS output power (reference): 185 W + 185 W (per channel at 6 , 1 kHz, 10% THD) Subwoofer RMS output power (reference): 180 W (at 6 , 100 Hz, 10% THD) Inputs PC (AUDIO IN) L/R: Voltage 700 mV impedance 47 kilohms MIC: sensitivity 1 mV, impedance 10 kilohms (USB) port: Type A Outputs PHONES: accepts headphones of 8 or more FRONT SPEAKER: accepts impedance of 6
SUBWOOFER (MHC-GTZ5, MHC-GTZ4 / GTZ4i, MHC-GTZ3 / GTZ3i and LBT-GTZ4i only): accepts impedance of 6

USB section

Supported bit rate MP3 (MPEG 1 Audio Layer-3): kbps, VBR WMA: kbps AAC: kbps Sampling frequencies MP3 (MPEG 1 Audio Layer-3): 32/44.1/48 kHz WMA: 44.1 kHz AAC: 44.1 kHz Transfer speed Full-Speed Supported USB device Mass Storage Class Maximum current 500 mA