Sony HCD-GN88D / MHC-GN88D Service Manual ▷ View online
HCD-GN88D
29
29
J117
J601 (2/2)
E
(Page 28)
(Page 28)
G
(Page 28)
F
R-CH
VOLUME
CONTROL
CPU
INTERFACE
INPUT
SELECT
SWITCH
SURROUND OR
DPL BUFFER
MID/
BASS &
TREBLE
TREBLE
R-CH
R-CH
COMMAND
F OUT2
OUT1
VL
IN1
IN1
+
Q101
R-CH
R-CH
SPEANA
D130
DBFB
F/B
F/B
F-R
F-L
REAR-L
CENTER-L
REAR-R
AC CUT DETECT
+
+
+
RV722
MIC AMP
IC722 (2/2)
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
IC102
AUDIO OUT
SWITCH
IC730
SYSTEM CONTROL
IC501
(3/5)
SURROUND
VOL CONTROL
IC103
INA1
INEX1
SUR1
IND1
L+R
DATA
CLK
BB-A1
BB-B1
SWOUT
REC-L
R-CH
TAPE L-CH
TUNER/TAPE
SECTION
TUNER/TAPE
SECTION
TUNER L-CH
DOWNMIX-L
DOWNMIX-R
FRONT-L
FRONT-R
CENTER
SURROUND-L
SURROUND-R
SW (LFE)
DATA
CLOCK
VOLUME-DATA
VOLUME-CLK
LINE MUTE
MIC DETECT
SPEANA MUTE
AUDIO-DATA
AUDIO-CLK
AUDIO OUT
SW-RELAY
R-CH
R-CH
Q730
R-CH
J721
L
R
MD/VIDEO
(AUDIO)
IN
L
R
AUDIO
LPF
I/F
R-CH
GAME
INPUT
J730
AUDIO OUT
RY701
2
14
15
24
4
2
3
1
13
5
18
22
16
21
5
3
6
6
INB1
INC1
4
L
R
J716
SUBWOOFER
19
41
40
37
39
38
DVD DSP
(2/2)
SECTION
MIC
MIC AMP
IC722(1/2)
ECHO LEVEL
RV721
MIC LEVEL
VC (+5V)
C
(Page 27)
17
8
MIC
RECB1
7
42
MIC OUT
VC
(+5V)
A+9V
C
A
B
B
C
A
B
B
SUR2
A+9V
41
34
2
33
32
+
1
8
DIGTAL
ECHO
IC721
LPF2
OUT
LPF1
IN
IN
• R-ch is omitted due to same as L-ch.
+5V REG.
Q721
VC (+5V)
13
12
6
5
10
9
15
24
14
86
87
79
80
82
70
71
68
77
+
AMP
SECTION
J
K
I
H
(Page 30)
AMP
SECTION
(Page 30)
(Page 30)
DISPLAY
SECTION
SECTION
TUNER/TAPE
SECTION
(Page 31)
AMP
SECTION
(Page 30)
11
4
31
25
30
29
8
7
7
23
28
27
26
22
3
MUTE
Q620, 670
MUTE
Q799
Q802
Q803
Q105
MUTE
MUTE
Q800
Q650,651
BUFFER
MUTE
Q801
MUTE
Q798
17
18
RELAY DRIVE
Q701, 702
• SIGNAL PATH
: TUNER (FM/AM)
: DVD
: TAPE PLAY
: GAME IN (AUDIO)
: RECORD
: MIC INPUT
: MD/VIDEO (AUDIO) IN
– MAIN Section –
HCD-GN88D
30
30
– AMP Section –
IC501
POWER AMP
IC301
POWER AMP
IC502
OVER CURRENT
PROTECTOR
: TUNER (FM/AM)
MUTING
Q503, 504, 581
F-R
DBFB
F/B
F-L
REAR-R
CENTER
REAR-L
75
78
STK-MUTE
72
VACS IN
PROTECTOR
STK-MUTE
10
15
14
4
3
12
STK MUTE
FAN DET
FAN-ON
FAN-K
OVER LOAD
DETECT
Q501, 551
+
+
+
+
MUTING
Q621, 671
MUTING
CONTROL
Q652
F-RELAY
HP-DET
HP-MUTE
FAN-K
50
HP-DETECT
76
HP-MUTE
83
FRONT-RELAY
88
FAN KICK
OVER LOAD
DETECT
Q301, 341, 351
RELAY DRIVE
Q516, 517
H/P DET
F-RELAY
HP-MUTE
+
-
-
+
FRONT SPEAKER
IMPEDANCE
USE 6-16Ω
SURROUND
SPEAKER
IMPEDANCE
USE 8Ω
CENTER
SPEAKER
IMPEDANCE
USE 8Ω
L
R
PHONES
J631
RY501
D+3.9V
SYSTEM CONTROL
IC501 (4/5)
TM501(1/2)
MAIN
SECTION
(Page 29)
J
MAIN
SECTION
(Page 29)
M
FAN MOTOR
DRIVE
Q851-854
DC FAN
M891
AC CUT DETECT
AC CUT DETECT
TH502
TH501
Q518
THERMAL
DETECT
Q505, 506
THERMAL
DETECT
Q514
Q602
VACS
CONTROL
+
+
+
85
CENTER-RELAY
84
LINE-RELAY
(REAR L/R
SURR RLAY)
RY381
RY382
TM501 (2/2)
L
R
RELAY DRIVE
Q383, 386
RELAY DRIVE
Q381, 384
I
MAIN
SECTION
(Page 29)
K
DISPLAY
SECTION
SECTION
(Page 31)
L
5
18
6
OVER
LOAD
LOAD
DC DET
VP
OCP
CT
OUT
D502
D391
2
1
D509
PROTECT
SWITCH
Q511
Q510
PROTECT
SWITCH
Q385
18
10
14
9
-
-
-
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
HCD-GN88D
31
31
– DISPLAY Section –
FL601
FLUORESCENT
INDICATOR TUBE
8 – 10, 12 – 22,
24 – 41, 43 – 46
7 – 1, 100 – 95,
92 – 87
P1 – 36
G1 – 13,
G16 – 21
64 – 66
SUPER LOW
FREQUENCY (BPF0)
FREQUENCY (BPF0)
2
BPF, RECT
IC101
BPF, RECT
IC102
67
70
1
2
7
6
69
68
48
93
72
94
BPF3
BPF1
BPF2
VKK
SELECTOR
G15
G15
G14
G14
G1 – 13, 16 – 21
6
1
7
80 VOL 1A
79 VOL 1B
ROTARY
ENCODER
S748
VOLUME
X
MAIN
SECTION
(Page 29)
H
DVD DSP(2/2)
SECTION
(Page 27)
D
AMP
SECTION
(Page 30)
L
SPEANA
P1 – 36
VF1
VF2
VF2
D610
D101
D102
-VG
(-32V)
X601
4MHz
83 X1
82 X0
52 – 59, 73
LED DRIVE
Q602 – 604,
Q1001 – 1006
D603, 605, 601
D1002, 1004, 1006
D1008, 1010, 1012
D1002, 1004, 1006
D1008, 1010, 1012
D602, 606, 604
D1001, 1003, 1005,
D1007, 1009, 1011
D1001, 1003, 1005,
D1007, 1009, 1011
M+9V
Q606
Q601
Q605
Q707
D748
KEY2
|
KEY0
S781 – 787, 788 - 792
S765 – 772, 773
S751 – 758, 759 - 763
S765 – 772, 773
S751 – 758, 759 - 763
60
IIC DATA
MCU VCC
CN501
D+3.3V
IIC-CLK
IIC-CLK
IIC
PROGRAM
IIC-DATA
IIC-DATA
3
2
4
61
IIC CLK
77
RESET
30 IIC-DATA
29 IIC-CLK
41
31
9
GC-RESET
TXD1
TXD1
CNVSS
CNVSS
MCU VCC
CN502
CNVSS
TXD1
TXD1
RTS1
ON BOARD
PROGRAM
PROGRAM
CLK1
RXD1
RESET
MCU VCC
CN VSS
VMUTE
M-REQ
SQ-DATA
SQ-DATA
74 POWER-KEY
73 DISPLAY-KEY
S749
S750
DISPLAY
48 STBY-LED
4 SIRCS
X502
16MHz
15 X-IN
13 X-OUT
X501
32.768kHz
10 XC-IN
11 XC-OUT
23
DVD-POWER
(SYS POWER)
95
DVD POWER CHK
SYSTEM CONTROL
IC501 (5/5)
27
STBY-RELAY
12
RESET
98
VREF
VREF
20
AC-CUT
B+ SWITCH
Q904, 905
RECT
D901
D901
+5V
REGULATOR
IC905
+3.3V
REGULATOR
IC907
+5V
REGULATOR
IC906
M +9V
A +9V
TC +9V
D502
D504
D501
D503
+3.9V
REGULATOR
IC904
+3.9V
REGULATOR
IC971
D +3.9V
+9V
REGULATOR
IC903
+9V
REGULATOR
IC901
+12V
REGULATOR
IC902
M+12V
LEVEL
DETECT
IC601
D505
RECT
D902
D902
RECT
D972 – 975
LED DRIVE
Q748
T972
SUB POWER
TRANSFORMER
RECT
D541
D541
RECT
D543
D543
+VL
AC CUT
DETECT
F974
VL
VL
VH
VH
VP
VF
VF
AC3
AC4
AC4
AC3
GND
F975
F976
F977
F978
R941
–VL
+VH
–VH
– 33V
REGULATOR
Q903
POWER ON/OFF
RELAY DRIVE
Q971
– VG
(-32V)
D977
RECT
RECT
D508
D509
VF1
VF2
RY971
AC IN
T910
MAIN POWER
TRANSFORMER
RESET
SWITCH
Q601
REMOTE CONTROL
RECEIVER
IC603
TO FLUORESCENT
INDICATOR TUBE
FL601
MCU VCC
VREF
EVER +3.9V
S901
S901
E3, E15, E51, EA, PH, SP,MY
AUS, MX, TH
120V
|
220V
|
230 – 240V
DISPLAY CONTROL
KEY CONTROL
IC601
BUFFER
Q807, 808
Q903, 906
Q909, 910
D103
D104
BAFFER, RECT
Q100, D105
71 ALL_BAND
3
2
6
9
7
5
8
R952
DVD DSP(2/2)
SECTION
(Page 27)
M
VOLTAGE
SELECT
ZIVA
AUDIO+5V
ZIVA
D+3.3V
ZIVA
D+5V
BUFFER
B+
SWITCH
94
I-HOLD
LED
1
3
• Abbreviation
AUS: Australian model
E3 : 240 V AC Area in E model
EA : Saudi Arabia model
AUS: Australian model
E3 : 240 V AC Area in E model
EA : Saudi Arabia model
E15 : Iran model
E51 : Chilean and Peruvian model
MX : Mexican model
MX : Mexican model
PH : Philippines model
SP : Singapore model
MY : Malaysia model
TH : Thai model
SP : Singapore model
MY : Malaysia model
TH : Thai model
HCD-GN88D
32
32
7 - 3 . PRINTED WIRING BOARD – RF Board –
•
See page 24 for Circuit Boards Location.
• Semiconductor
Location
D001
B-5
D002
B-5
IC001
A-5
Q001
B-3
Q002
C-3
Ref. No.
Location
IC001
(Page 36)
A
TO
DMB03 BOARD
(TDP022W)
(TDP022W)
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