Sony HCD-GN90D User manual

HCD-GN90D/GN100D
E Model
HCD-GN90D/GN100D
Australian Model
HCD-GN100D
SERVICE MANUAL
MiNi Hi-Fi COMPONENT SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-877-976-01
2004G02-1
© 2004.07
SPECIFICATIONS
Ver 1.0 2004. 07
– Continued on next page –
•HCD-GN90D/GN100D are the Amplifier,
DVD player, tape deck and tuner
section in MHC-GN90D/GN100D.
Amplifier section
MHC-GN100D
The following are measured at AC 120, 127, 220, 240V 50/60 Hz
DIN power output (rated)
Front speaker: 180 + 180 watts (6 ohms at 1 kHz, DIN)
Center speaker: 60 watts (8 ohms at 1 kHz, DIN)
Surround speaker: 60 + 60 watts (8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker: 235 + 235 watts
(6 ohms at 1 kHz, 10% THD)
Center speaker: 80 watts (8 ohms at 1 kHz, 10% THD)
Surround speaker: 80 + 80 watts
(8 ohms at 1 kHz, 10% THD)
MHC-GN90D
The following are measured at AC 120, 127, 220, 240V 50/60 Hz
DIN power output (rated)
Front speaker: 125 + 125 watts (6 ohms at 1 kHz, DIN)
Center speaker: 30 watts (8 ohms at 1 kHz, DIN)
Surround speaker: 30 + 30 watts (8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker: 170 + 170 watts
(6 ohms at 1 kHz, 10% THD)
Center speaker: 50 watts (8 ohms at 1 kHz, 10% THD)
Surround speaker: 50 + 50 watts
(8 ohms at 1 kHz, 10% THD)
This system incorporates Dolby*Digital, Dolby Pro Logic
(II) adaptive matrix surround decoder, and the DTS** Digital
Surround System.
*Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”, and the double-D symbol are
trademarks of Dolby Laboratories.
** Manufactured under license from Digital Theater
Systems, Inc, “DTS” and “ DTS Digital Surround” are
registered trademarks of Digital Theater Systems. Inc.
Model Name Using Similar Mechanism NEW
DVD DVD Mechanism Type CDM74D2-DVBU62
Section Base Unit Name DVBU62
Optical Pick-up Name DBU-3
TAPE
Model Name Using Similar Mechanism NEW
Section
Inputs
GAME INPUT (VIDEO): 1 Vp-p, 75 ohms
(phono jack)
GAME INPUT (AUDIO): Voltage 250 mV,
(phono jacks) impedance 47 kilohms
VIDEO/SAT (AUDIO) IN: voltage 450 mV/250 mV,
(phono jacks) impedance 47 kilohms
MIC: sensitivity 1 mV,
(phone jack) impedance 10 kilohms
Outputs
AUDIO OUT: Voltage 250 mV
(phono jacks) impedance 1 kilohms
VIDEO OUT: max. output level 1 Vp-p,
(phono jack) unbalanced, Sync.
negative load impedance
75 ohms
COMPONENT VIDEO
OUT: Y: 1 Vp-p, 75 ohms
PB/CB: 0.7 Vp-p, 75 ohms
PR/CR: 0.7 Vp-p, 75 ohms

2
HCD-GN90D/GN100D
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 soldering iron around 270˚C
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This appliance is classified as
a CLASS 1 LASER product.
This label is located on the rear
exterior.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE WITH
MARK 0ON 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.
S VIDEO OUT
(4-pin/mini-DIN jack): Y: 1 Vp-p, unbalanced,
Sync negative
C: 0.286 Vp-p load
impedance 75 ohms
PHONES: accepts headphones of
(stereo mini jack) 8 ohms or more
FRONT SPEAKER: Use only the supplied speaker
SUBWOOFER OUT: Voltage 250 mV
(phono jack) impedance 1 kilohms
SURROUND SPEAKER: Use only the supplied speakers
CENTER SPEAKER: Use only the supplied speaker
Disc player section
System Compact disc and digital
audio and video system
Laser Semiconductor laser
(DVD: λ= 650 nm,
CD: λ= 780 nm)
Emission duration: continuous
Frequency response DVD (PCM 48 kHz):
2 Hz – 22 kHz (±1dB)
CD: 2 Hz – 20 kHz (±0.5 dB)
Video color system format NTSC, PAL
(except Latin American models)
Tape deck section
Recording system 4-track 2-channel stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I tape
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz (50 kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Latin American models: 530 – 1,710 kHz
(with the interval set at 10 kHz)
531 – 1,710 kHz
(with the interval set at 9 kHz)
Saudi Arabian models: 531– 1,602 kHz
(with the interval set at 9 kHz)
Other models: 531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
Australian model: 230 – 240 V AC, 50/60 Hz
Mexican model: 127 V AC, 60 Hz
Saudi Arabian models: 120 – 127 V, 220V or
230 – 240 V AC, 50/60 Hz
Adjustable with voltage selector.
Other models: 120 V, 220 V or
230 – 240 V AC, 50/60 Hz
Adjustable with voltage selector
Power consumption
MHC-GN100D 390 watts
MHC-GN90D 275 watts
Dimensions (w/h/d) (Approx.)
HCD-GN100D/GN90D 280 x 360 x 394.5 mm
Mass (Approx.)
HCD-GN100D 16.1 kg
HCD-GN90D 15.2 kg
Design and specifications are subject to change without notice.
This following caution label is
located inside the apparatus.

3
HCD-GN90D/GN100D
TABLE OF CONTENTS
1. SERVICING NOTES ................................................ 4
2. GENERAL
Location of Controls ........................................................ 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Case ................................................................................. 8
3-3. Loading Panel Assy ......................................................... 8
3-4. Front Panel Assy .............................................................. 9
3-5. DVD Mechanism Deck (CDM74D2-DVBU62) ............. 9
3-6. Tape Mechanism Deck, Game Board .............................. 10
3-7. CD SW Board, Panel Board ............................................ 10
3-8. Switch Board ................................................................... 11
3-9. Tuner Pack ....................................................................... 11
3-10. Bracket Top, Bracket Sub ................................................ 12
3-11. Primary Board ................................................................. 12
3-12. DMB07 Board, Video Board ........................................... 13
3-13. Rear Panel ........................................................................ 13
3-14. Main Board, Power Board Assy ...................................... 14
3-15. Surround Board, PA Board .............................................. 14
3-16. Power Transformer (T601) .............................................. 15
3-17. Driver Board, SW Board ................................................. 15
3-18. RF Board, Optical Pick-Up (DBU-3) .............................. 16
3-19. Sensor Board ................................................................... 16
3-20. Motor (TB) Board ........................................................... 17
3-21. Motor (LD) Board ........................................................... 17
4. TEST MODE .............................................................. 18
5. MECHANICAL ADJUSTMENTS ....................... 27
6. ELECTRICAL ADJUSTMENTS
Deck section .................................................................... 27
Video Section .................................................................. 28
7. DIAGRAMS
7-1. Block Diagram – DVD Section (1/2) – .......................... 32
7-2. Block Diagram – DVD Section (2/2) – .......................... 33
7-3. Block Diagram – Tuner/Tape Section – ......................... 34
7-4. Block Diagram – Main Section – ................................... 35
7-5. Block Diagram – Display/Power Section – .................... 36
7-6. Block Diagram – Amp Section – .................................... 37
7-7. Printed Wiring Board – RF Board – ............................... 38
7-8. Schematic Diagram – RF Board – .................................. 39
7-9. Printed Wiring Board – DVD Mechanism Board – ....... 40
7-10. Schematic Diagram – DVD Mechanism Board – .......... 41
7-11. Printed Wiring Board – DMB07 Board (Side A) – ........ 42
7-12. Printed Wiring Board – DMB07 Board (Side B) – ........ 43
7-13. Schematic Diagram – DMB07 Board (1/6) – ................. 44
7-14. Schematic Diagram – DMB07 Board (2/6) – ................. 45
7-15. Schematic Diagram – DMB07 Board (3/6) – ................. 46
7-16. Schematic Diagram – DMB07 Board (4/6) – ................. 47
7-17. Schematic Diagram – DMB07 Board (5/6) – ................. 48
7-18. Schematic Diagram – DMB07 Board (6/6) – ................. 49
7-19. Printed Wiring Board – Video Board – .......................... 50
7-20. Schematic Diagram – Video Board – ............................. 51
7-21. Printed Wiring Boards – Main Board – .......................... 52
7-22. Schematic Diagram – Main Board (1/4) – ..................... 53
7-23. Schematic Diagram – Main Board (2/4) – ..................... 54
7-24. Schematic Diagram – Main Board (3/4) – ..................... 55
7-25. Schematic Diagram – Main Board (4/4) – ..................... 56
7-26. Printed Wiring Board – Panel Board – ........................... 57
7-27. Schematic Diagram – Panel Board (1/2) – .................... 58
7-28. Schematic Diagram – Panel Board (2/2) – .................... 59
7-29. Printed Wiring Boards
– Game, CD SW Board – ................................................ 60
7-30. Schematic Diagram
– Game, CD SW Board – ................................................ 61
7-31. Printed Wiring Board – PA Board – ............................... 62
7-32. Schematic Diagram – PA Board – .................................. 63
7-33. Printed Wiring Board – Surround Board – ..................... 64
7-34. Schematic Diagram – Surround Board – ........................ 65
7-35. Printed Wiring Boards – Primary Board – ..................... 66
7-36. Schematic Diagram – Primary Board – .......................... 67
7-37. Circuit Board Location .................................................... 68
7-38. IC Block Diagram ........................................................... 69
8. EXPLODED VIEWS
8-1. Case, Rear Panel Section ................................................. 85
8-2. Front Panel Section ......................................................... 86
8-3. Chassis Section ................................................................ 87
8-4. DVD Mechanism Deck Section-1
(CDM74D2-DVBU62) ................................................... 88
8-5. DVD Mechanism Deck Section-2
(CDM74D2-DVBU62) ................................................... 89
9. ELECTRICAL PARTS LIST ................................ 90

4
HCD-GN90D/GN100D
SECTION 1
SERVICING NOTES
NOTES ON HANDLINGTHE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
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 flexible 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 reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, observe
from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output several times.
•MODEL IDENTIFICATION
– Back Panel –
MODEL PART No.
GN100D : SP, MY models 4-254-995-1[]
GN100D : EA model 4-254-995-2[]
GN100D : E3, E15 models 4-254-995-3[]
GN100D : PH model 4-254-995-4[]
GN100D : AUS model 4-254-995-5[]
GN100D : MX model 4-254-995-6[]
GN90D : EA model 4-254-997-0[]
GN90D : SP models 4-254-997-1[]
GN90D : E15 model 4-254-997-2[]
GN90D : PH model 4-254-997-3[]
•Abbreviation
E3 : 240 V AC Area in E model
E15 : Iran model
AUS : Australian model
MX : Mexican model
PH : Philippine model
SP : Singapore model
MY : Malaysia model
EA : Saudi Arabia model
PART No.

5
HCD-GN90D/GN100D
SECTION 2
GENERAL This section is extracted
from instruction manual.
LOCATING THE CONTROLS
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qa
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Unit
ALBUM qh
AMP MENU ra
CD SYNC qf
Deck A wl
Deck B w;
DIRECTION qa
DISC 1 ~ 3 3
Disc tray rg
DISPLAY rd
Display 5
DOLBY PL II ek
DVD el
ECHO LEVEL wg
EFFECT ON/OFF r;
ENTER wa
EQ EDIT 8
EX-CHANGE/DISC SKIP 4
FM MODE q;
GAME es
GAME INPUT (jacks) wk
GAME MIXING ej
GROOVE ea
ILLUMINATION e;
MIC (jack) wj
MIC LEVEL wh
MULTI JOG ws
P FILE MEMORY 7
PHONES (jack) wf
PLAY MODE 9
Power illuminator 2
REC PAUSE/START qg
REPEAT q;
SLEEP rs
SOUND FIELD rf
TAPE A/B eg
TUNER/BAND eh
TUNER MEMORY qa
TUNING MODE 9
VIDEO/SAT ed
VOLUME wd
?/1 (power) 1
ZOPEN/CLOSE 6
nN (play) qs
–. >+(go backward/
forward) qd
–m M+(rewind/fast forward)
qh
X(pause) ql
x(stop) qk
ZA (Eject A) ef
ZB (Eject B) qj
List of button locations and reference pages
ALPHABE TICAL OR DER
A – D
E – L
M – R
S – Z
SYMBOLS

6
HCD-GN90D/GN100D
This section is extracted
from instruction manual.
Remote control
ALBUM + 7
ALBUM – qa
ANGLE qk
AUDIO qk
BAND wg
CLEAR wl
CLOCK/TIMER SELECT e;
CLOCK/TIMER SET e;
DISC SKIP wf
DISPLAY wa
DVD DISPLAY wh
DVD MENU 7
DVD SETUP ws
DVD TOP MENU qa
ENTER wj
FM MODE 5
FUNCTION +/– q;
KARAOKE/MPX qf
KEY CONTROL #/29
Numeric Buttons qd
PLAY MODE 4
REPEAT 5
SLEEP qh
SLOW / w;
SOUND FIELD +/– wd
SUBTITLE qk
TUNER MEMORY 3
TUNING MODE 4
TUNING +/– wk
TV CH +/– qg
TV/VIDEO ea
TV VOL +/– 2
TV &/1 qj
VOLUME +/– 8
?/1 (power) 1
x(stop) 6
X(pause) 6
nN (play) 6
–.(go backward) wk
>+ (go forward) wk
m(rewind) w;
M(fast forward) w;
M/m/</,wj
> 10 qs
ORETURN ql
ALPHABE TICAL OR DER
A – E F – Z
SYMBOLS
O
bB
V
v
+
+
–
–+–
+–
+
–
+
–
+
–
+
–
XbB
y
y
+– y
y
x
mM.>
O
bB
V
v
+
–
+
–
+
–
+
–
+
–
XbB x
mM.>
ws
1
wk
qa
wd
2qg
qh
qf
qs
qd
3
4
5
6
7
8
9
0
qj
qk
w;
wa
ql
e;
ea
wl
wf
wg
wh
wj

7
HCD-GN90D/GN100D
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
3-2.CASE
(Page 8)
3-3.LOADING PANEL ASSY
(Page 8)
3-4.FRONT PANEL ASSY
(Page 9)
3-14.POWER TRANSFORMER
(T601)
(Page 15)
3-13.REAR PANEL
(Page 13)
3-5.DVD MECHANISM DECK
(CDM74D2-DVBU62)
(Page 9)
3-18. RF BOARD,
OPTICAL PICK-UP
(DBU-3)
(Page 16)
3-6.TAPE MECHANISM DECK,
GAME BOARD
(Page 10)
3-17.DRIVER BOARD,
SW BOARD
(Page 15)
3-11.PRIMARY BOARD
(Page 12)
3-20.MOTOR (TB) BOARD
(Page 17)
3-21.MOTOR (LD) BOARD
(Page 17)
3-19.SENSOR BOARD
(Page 16)
3-7.CD SW BOARD,
PANEL BOARD
(Page 10)
3-14.MAIN BOARD
POWER BOARD ASSY
(Page 14)
3-15.SURROUND BOARD,
PA BOARD
(Page 14)
3-10.BRACKET TOP,
BRACKET SUB
(Page 12)
3-8.SWITCH BOARD
(Page 11)
3-9.TUNER PACK
(Page 11)
3-12.DMB07 BOARD,
VIDEO BOARD
(Page 13)
SET

8
HCD-GN90D/GN100D
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE
3-3. LOADING PANEL ASSY
1 two screws
(case 3 TP2)
(M3 x 8)
2 screw
(case 3 TP2) (M3 x 12)
3 five screws
(+BVTT3 x 6)
7 case
6
5
1
two screws
(case 3 TP2) (M3 x 8)
2 screw (case 3 TP2
)
(M3 x 12)
4 two screws
(+BVTT3 x 6)
DVD mechanismdeck (CDM74D2-DVBU62)
1 Tu rn the pulley to the arrow direction.
Front side
Pulley
4 loading panel assy
3
2
Pull out disc tray

9
HCD-GN90D/GN100D
3-4. FRONT PANEL ASSY
3-5. DVD MECHANISM DECK (CDM74D2-DVBU62)
3 screw (BVTP3 x 10)
2 five screws (BVTP3 x 10)
9 front panel assy
6 from CN801 on GAME board
5 from deck B head
CN508
CN509
7 from deck A head
8 from CN802 on
GAME board
1 two wires
(flat type)
3 screw (BVTP3 x 10)
4 screw (BVTP3 x 10)
MAIN board
4 DVD mechanism deck
2 wire (flat type) (29 core)
1 two screws (BVTP3 x 10
)
3 CN701
MAIN board

10
HCD-GN90D/GN100D
3-6. TAPE MECHANISM DECK, GAME BOARD
3-7. CD SW BOARD, PANEL BOARD
2 tape mechanism deck
3 three screws
(+BVTP2.6 x 8)
1 five screws
(+BVTP2.6 x 8)
6 GAME board
5 knob (MIC)
4 bracket (MIC
)
1 five screws
(+BVTP2.6 x 8)
9 wire (flat type) (19 core)
from CN902
0 PANEL board
7
5
nineteen screws
(+BVTP2.6 x 8)
2 CD SW board
3 knob (VOL)
6 claw
4 CN903
8 CN907