Sony HCD-GT220 / HCD-GT440 / HCD-GT660 / MHC-GT220 / MHC-GT440 / MHC-GT660 Service Manual ▷ View online
HCD-GT220/GT440/GT660
3
1.
SERVICING NOTES
............................................. 4
2. GENERAL
.................................................................. 6
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Case (Side-L), Case (Side-R) .......................................... 8
3-3. Case (Top) ....................................................................... 8
3-4. LID (CD) ......................................................................... 9
3-5. CD Mechanism Deck, USB R Board .............................. 9
3-6. Front Panel Block ........................................................... 10
3-7. Mecha Deck (CWM42FF609) ........................................ 10
3-8. Back Panel Block ............................................................ 11
3-9. MAIN Board, POWER Board ........................................ 11
3-10. CD Board ........................................................................ 12
3-11. DRIVER Board, SW Board ............................................ 12
3-12. Optical Pick-up Block (KSM-213D) .............................. 13
3-13. SENSOR Board .............................................................. 13
3-14. MOTOR (TB) Board....................................................... 14
3-15. MOTOR (LD) Board ...................................................... 14
3-2. Case (Side-L), Case (Side-R) .......................................... 8
3-3. Case (Top) ....................................................................... 8
3-4. LID (CD) ......................................................................... 9
3-5. CD Mechanism Deck, USB R Board .............................. 9
3-6. Front Panel Block ........................................................... 10
3-7. Mecha Deck (CWM42FF609) ........................................ 10
3-8. Back Panel Block ............................................................ 11
3-9. MAIN Board, POWER Board ........................................ 11
3-10. CD Board ........................................................................ 12
3-11. DRIVER Board, SW Board ............................................ 12
3-12. Optical Pick-up Block (KSM-213D) .............................. 13
3-13. SENSOR Board .............................................................. 13
3-14. MOTOR (TB) Board....................................................... 14
3-15. MOTOR (LD) Board ...................................................... 14
4. TEST
MODE
............................................................. 15
5. MECHANICAL
ADJUSTMENTS
...................... 19
6. ELECTRICAL
ADJUSTMENTS
........................ 20
7. DIAGRAMS
7-1. Block Diagram - CD SERVO, USB Section - ................ 23
7-2. Block Diagram - MAIN Section - ................................... 24
7-3. Block Diagram - AMP Section - ..................................... 25
7-4. Block
7-2. Block Diagram - MAIN Section - ................................... 24
7-3. Block Diagram - AMP Section - ..................................... 25
7-4. Block
Diagram
- PANEL, POWER SUPPLY Section - ........................... 26
7-5. Printed Wiring Board - CD Board - ................................ 28
7-6. Schematic Diagram - CD Board - ................................... 29
7-7. Printed Wiring Boards - CHANGE Section - ................. 30
7-8. Schematic Diagram - CHANGE Section - ..................... 31
7-9. Printed Wiring Board - USB R Board - .......................... 32
7-10. Schematic Diagram - USB R Board - ............................. 33
7-11. Printed Wiring Board - TC Board - ................................. 34
7-12. Schematic Diagram - TC Board - ................................... 35
7-13. Printed Wiring Boards - MAIN Section - ....................... 37
7-14. Schematic Diagram - MAIN Section (1/4) - ................... 38
7-15. Schematic Diagram - MAIN Section (2/4) - ................... 39
7-16. Schematic Diagram - MAIN Section (3/4) - ................... 40
7-17. Schematic Diagram - MAIN Section (4/4) - ................... 41
7-18. Printed Wiring Board - MIC Board - .............................. 42
7-19. Schematic Diagram - MIC Board - ................................. 43
7-20. Printed Wiring Board
7-6. Schematic Diagram - CD Board - ................................... 29
7-7. Printed Wiring Boards - CHANGE Section - ................. 30
7-8. Schematic Diagram - CHANGE Section - ..................... 31
7-9. Printed Wiring Board - USB R Board - .......................... 32
7-10. Schematic Diagram - USB R Board - ............................. 33
7-11. Printed Wiring Board - TC Board - ................................. 34
7-12. Schematic Diagram - TC Board - ................................... 35
7-13. Printed Wiring Boards - MAIN Section - ....................... 37
7-14. Schematic Diagram - MAIN Section (1/4) - ................... 38
7-15. Schematic Diagram - MAIN Section (2/4) - ................... 39
7-16. Schematic Diagram - MAIN Section (3/4) - ................... 40
7-17. Schematic Diagram - MAIN Section (4/4) - ................... 41
7-18. Printed Wiring Board - MIC Board - .............................. 42
7-19. Schematic Diagram - MIC Board - ................................. 43
7-20. Printed Wiring Board
- AMP Board (GT220/GT660) - ..................................... 44
7-21. Schematic Diagram - AMP Board (GT220/GT660) - ..... 45
7-22. Printed Wiring Board - AMP Board (GT440) - .............. 46
7-23. Schematic Diagram - AMP Board (GT440) - ................. 47
7-24. Printed Wiring Boards
7-22. Printed Wiring Board - AMP Board (GT440) - .............. 46
7-23. Schematic Diagram - AMP Board (GT440) - ................. 47
7-24. Printed Wiring Boards
- SUB WOOFER Section (GT440/GT660) - .................. 48
7-25. Schematic Diagram
- SUB WOOFER Section (GT440/GT660) - .................. 49
7-26. Printed Wiring Boards - PANEL Section - ..................... 50
7-27. Schematic Diagram - PANEL Section - .......................... 51
7-28. Printed Wiring Boards - KEY Section - .......................... 52
7-29. Schematic Diagram - KEY Section - .............................. 53
7-30. Printed Wiring Board
7-27. Schematic Diagram - PANEL Section - .......................... 51
7-28. Printed Wiring Boards - KEY Section - .......................... 52
7-29. Schematic Diagram - KEY Section - .............................. 53
7-30. Printed Wiring Board
- TRANSFORMER Board (GT220/GT660) - ................ 54
TABLE OF CONTENTS
7-31. Schematic Diagram
- TRANSFORMER Board (GT220/GT660) - ................ 55
7-32. Printed Wiring Board
- TRANSFORMER Board (GT440) -............................. 56
7-33. Schematic Diagram
- TRANSFORMER Board (GT440) -............................. 57
8.
EXPLODED VIEWS
8-1. Case Section .................................................................... 66
8-2. KEY TOP Board Section ................................................ 67
8-3. TC Mecha Deck Section ................................................. 68
8-4. PANEL Board Section .................................................... 69
8-5. Front Panel Section ......................................................... 70
8-6. MAIN Board Section ...................................................... 71
8-7. POWER Board, SUB WOOFER Board Section ............ 72
8-8. Chassis Section ............................................................... 73
8-9. CD Mechanism Deck, Section-1
(CDM74KF-K6BD91UR-WOD)
8-2. KEY TOP Board Section ................................................ 67
8-3. TC Mecha Deck Section ................................................. 68
8-4. PANEL Board Section .................................................... 69
8-5. Front Panel Section ......................................................... 70
8-6. MAIN Board Section ...................................................... 71
8-7. POWER Board, SUB WOOFER Board Section ............ 72
8-8. Chassis Section ............................................................... 73
8-9. CD Mechanism Deck, Section-1
(CDM74KF-K6BD91UR-WOD)
...................................
74
8-10. CD Mechanism Deck, Section-2
(CDM74KF-K6BD91UR-WOD)
(CDM74KF-K6BD91UR-WOD)
...................................
75
9.
ELECTRICAL PARTS LIST
.............................. 76
Accessories are given in the last of the electrical parts list.
HCD-GT220/GT440/GT660
4
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostat-
ic break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The fl exible board is easily damaged and should be handled with
care.
ic break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The fl exible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc refl ective surface by the objective lens in the optical
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
The laser beam on this model is concentrated so as to be focused
on the disc refl ective surface by the objective lens in the optical
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong
viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
RELEASING THE ANTITHEFT LOCK
The disc table lock function for the antitheft of an demonstration
disc in the store is equipped.
The disc table lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure:
1. Press the [
1. Press the [
?/1
] button to turn the power on.
2. Press the [CD] button to select “CD”.
3. While pressing the [
3. While pressing the [
x
] button, press the [
Z
] button until “UN-
LOCKED” displayed on the fl uorescent indicator tube (around
5 seconds).
5 seconds).
Note: When
“
LOCKED
”
is displayed, the antitheft lock is not released
by turning power on/off with the
[
?/1
]
button.
HOW TO OPEN THE TRAY WHEN POWER SWITCH
TURN OFF
TURN OFF
Note: Work after removing the side panel refering to SECTION 3 DIS-
ASSEMBLY (page 7).
Turn the gear (loading A)
to the direction of the arrow.
HCD-GT220/GT440/GT660
5
SERVICE POSITION
In checking the CD mechanism deck, prepare jig (extension cable J-2501-248-A (27 core/300 mm))/J-2501-077-A (13 core/300 mm)
In checking the CD mechanism deck, prepare jig (extension cable J-2501-248-A (27 core/300 mm))/J-2501-077-A (13 core/300 mm)
Connect jig (extension cable J-2501-248-A)
to the flexible flat cable (27 core) and
CD board (CN202).
to the flexible flat cable (27 core) and
CD board (CN202).
MAIN board
CD mechanism deck
Connect jig (extension cable J-2501-077-A)
to the flexible flat cable (13 core) and
DRIVER board (CN701).
to the flexible flat cable (13 core) and
DRIVER board (CN701).
HCD-GT220/GT440/GT660
6
SECTION 2
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
Guide to parts and controls
also be performed using the buttons on the unit having the same or similar names.
Unit
HCD-GT660
HCD-GT660
HCD-GT440/GT220
* HCD-GT440 only
Remote
/ (on/standby)
Press to turn on the system.
Unit: STANDBY indicator
Remote sensor
DISPLAY
Press to change the information on the
display.
display.
Unit: ILLUMINATION
Press to change the illumination pattern
around MASTER VOLUME
around MASTER VOLUME
RH
.
CD
Press to select the CD function.
TUNER/BAND
Press to select the TUNER function.
Press to select FM or AM reception
mode.
Press to select FM or AM reception
mode.
Unit: TAPE A/B
Press to select the TAPE function. Press
to select TAPE A or TAPE B.
to select TAPE A or TAPE B.
Unit: AUDIO
Press to select the AUDIO function.
USB
Press to select the USB function.
Remote: FUNCTION
Press to select the function.
(HCD-GT660/GT440 only)
SUBWOOFER
SUBWOOFER indicator
Lights up when the subwoofer is on.
PUSH
Press to insert or eject a tape.
ERASE
from the connected optional USB device
(Digital music player or USB storage
media).
(Digital music player or USB storage
media).
Unit: PRESET EQ, GROOVE,
SURROUND
Remote: EQ
PLAY MODE/TUNING MODE
(HCD-GT660 only)
Press to select the play mode of a CD,
MP3 disc or an optional USB device
(Digital music player or USB storage
media).
Press to select the tuning mode.
MP3 disc or an optional USB device
(Digital music player or USB storage
media).
Press to select the tuning mode.
EQ BAND (HCD-GT440/GT220
only)
Press to select the frequency band.
R
PHONES jack
Connect the headphones.
RB
AUDIO INPUT L/R jacks
Connect to an audio component
(Portable audio player, etc.).
(Portable audio player, etc.).
RT
(USB) port
Connect an optional USB device (Digital
music player or USB storage media).
music player or USB storage media).
RE
REC/ERASE indicator
Lights up when recording to the
connected optional USB device (Digital
music player or USB storage media), or
connected optional USB device (Digital
music player or USB storage media), or
RG
MIC jack
Connect an optional microphone.
MIC LEVEL
Turn to adjust the microphone volume.
RH
Unit: MASTER VOLUME
Turn to adjust the volume.
Remote: VOLUME +/
Press to adjust the volume.
RI
OPERATION DIAL
RK
Unit: (play/pause)
Remote: (play)
(pause)
Press to start or pause playback.
(stop)
Press to stop playback.
/ (go back/go forward)
Unit: TUNING +/
Remote: +/
(tuning)
Press to tune in the desired station.
+/
(select folder)
Press to select a folder.
/ (rewind/fast forward)
RL
CD-USB SYNC/REC1
Press to record from a disc onto the
connected optional USB device (Digital
music player or USB storage media).
connected optional USB device (Digital
music player or USB storage media).
CD-TAPE SYNC
TAPE REC PAUSE/START
Press to record onto a tape.
RM
OPEN/CLOSE
Press to insert and eject a disc.
X
Unit: DISC 1
3
Press to select a disc. Press to switch to
the CD function from other function.
the CD function from other function.
Unit: DISC SKIP/EX-CHANGE
Press to select a disc. Press to exchange a
disc while playing.
disc while playing.
Remote: DISC SKIP
Press to select a disc.
XB
RETURN
Press to return to the parent folder.
Press to exit search mode.
Press to exit search mode.
XT
ENTER
Press to enter the settings.
XE
(HCD-GT660 only)
ENTER
Press to enter the settings.
+/
(equalizer level)
Press to adjust the equalizer level.
XG
(HCD-GT660 only)
BASS
indicator lights up when the button is
pressed.
pressed.
VOCAL
indicator lights up when the button is
pressed.
pressed.
GUITAR
indicator lights up when the button is
pressed.
pressed.
FOCUS
Press to emphasize equalizer level of the
selected band.
selected band.
XH
CLOCK/TIMER SELECT
CLOCK/TIMER SET
Press to set the clock and the timers.
XI
REPEAT/FM MODE
Press to listen to a disc, an USB device, a
Press to select the FM reception mode
(monaural or stereo).
(monaural or stereo).
XK
Battery compartment lid
XL
CLEAR
Press to delete a pre-programmed track
XM
TUNER MEMORY
Press to preset the radio station.
F
PLAY MODE/TUNING MODE
Press to select the play mode of a CD,
MP3 disc or an optional USB device
(Digital music player or USB storage
media).
Press to select the tuning mode.
MP3 disc or an optional USB device
(Digital music player or USB storage
media).
Press to select the tuning mode.
FB
SLEEP
Press to set the Sleep Timer.