Sony HCD-GNX66 / HCD-GNX77 / MHC-GNX66 / MHC-GNX77 Service Manual ▷ View online
HCD-GNX66/GNX77
29
29
HCD-GNX66/GNX77
7-4. BLOCK DIAGRAM – MAIN SECTION –
J101
C
(Page 28)
(Page 28)
D
(Page 28)
E
R-CH
VOLUME
CONTROL
CPU
INTERFACE
INPUT
SELECT
SWITCH
SURROUND OR
DPL BUFFER
MID/
BASS &
TREBLE
TREBLE
R-CH
R-CH
COMMAND
TOUT1
OUT1
VOLIN1
+
Q101
R-CH
R-CH
SPEANA
DBFB F/B
F-R
F-L
+
+
+
RV1100
MIC AMP
IC1100 (2/2)
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
IC101
SYSTEM CONTROL
IC401
(3/5)
INA1
INEX1
INC1
SAOUT
DATA
CLK
BB-A1
BB-B1
SWOUT
REC-OUT-L
R-CH
TC-PB-L
TAPE SECTION
TAPE SECTION
ST-L
(Page 27)
A
CD SECTION
CD-L
LINE MUTE
M61529-DATA
M61529-CLK
R-CH
J1101(1/3)
J1101(2/3)
L
R
MD/VIDEO
AUDIO
IN
L
R
TV
AUDIO
IN
2
14
15
24
18
22
16
21
6
3
5
5
INB1
IND1
4
19
MIC 2
MIC AMP
IC1100(1/2)
ECHO LEVEL
MIC LEVEL
17
8
MIC
RECB1
7
MIC OUT
C
A
B
B
C
A
B
B
A+9V
+
2
1
3
9
6
7
DIGTAL
ECHO
IC1101
LPF2
OUT
LPF1
IN
IN
81
82
66
AMP
SECTION
H
G
F
(Page 30)
AMP
SECTION
(Page 30)
(Page 30)
DISPLAY
SECTION
SECTION
TAPE
SECTION
(Page 31)
MUTE
Q180, 181
Q544,545
BUFFER
J1100(1/3)
J1100(2/3)
J1101(3/3)
J1100(3/3)
MIC 1
: TUNER (FM/AM)
: CD
: TAPE PLAY
: RECORD
: MIC INPUT
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
HCD-GNX66/GNX77
30
30
HCD-GNX66/GNX77
7-5. BLOCK DIAGRAM – AMP SECTION –
IC600
POWER AMP
: FM
MUTING
Q604, 606, 610
F-R
DBFB F/B
F-L
78
70
STK-MUTE
52
THERMAL VACS
PROT
STK-MUTE
4
3
12
STK MUTE
FAN DET
RY665
FAN-CTL
FAN-ON
FAN-K
OVER LOAD
DETECT
Q668, 618
+
+
+
MUTING
Q640, 641
MUTING
CONTROL
Q634,682
F-RELAY
HP-DET
HP-MUTE
FAN-K
100
HD DETT
75
HP-MUTE
77
LINE/SURR-RLY
76
FR-RELAY
36
FAN KICK-OFF
RELAY DRIVE
Q644, 647
H/P DET
F-RELAY
HP-MUTE
+
-
-
+
FRONT SPEAKER
L
R
PHONES
J1103
RY646
SYSTEM CONTROLLER
IC401 (4/5)
IC550
OVER CURRENT
PROTECTOR
TM600
+
-
-
+
SURR SPEAKER
L
R
TM601
MAIN
SECTION
(Page 29)
H
MAIN
SECTION
(Page 29)
M
FAN MOTOR
DRIVE
Q580,581,584
DC FAN
M891
VL(AC)
TH629
TH630
THERMAL
DETECT
Q628, 630
THERMAL
DETECT
Q629
Q583
G
DISPLAY
SECTION
SECTION
(Page 31)
J
DISPLAY
SECTION
SECTION
(Page 31)
I
OVER
LOAD
LOAD
DC DET
VP
OCP
CT
OUT
D624
D550
2
1
Q648
18
11
10
10
9
14
8
• SIGNAL PATH
RELAY DRIVE
Q666
HCD-GNX66/GNX77
31
31
HCD-GNX66/GNX77
7-6. BLOCK DIAGRAM – DISPLAY SECTION –
FL901
FLUORESCENT
INDICATOR TUBE
9,10, 12 – 22,
24 – 41, 43 – 47
8 – 1, 100 – 96,
92-85
P1 – 36
G1 – 13
G17-24
64 – 66
93–95
BPF4
1
BPF, RECT
IC904
67
68
16
2
15
69
71
48
80
ALL BAND
BPF3
BPF1
IN2
IN1
VKK
SELECTOR
G14-16
G14-16
G1-13,G17-24
13
17
74 VOLUME
ROTARY
ENCODER
S970
VOLUME
97 BPM DET
76 AMS
ROTARY
ENCODER
S916
X
AMP
SECTION
(Page 30)
J
X
AMP
SECTION
(Page 30)
I
X
MAIN
SECTION
(Page 29)
F
CD
SECTION
(Page 27)
B
SPEANA
BPM LOW
FAN CTL
P1 – 36
VF1
VF2
VF2
D905
-VG
(-32V)
X901
4MHz
83 XIN
82 XOUT
57– 59,
72,78,79
LED DRIVE
Q908-913,915,
916,918-920
D907,
D914,915,916,918,
D919,921,923,926
D914,915,916,918,
D919,921,923,926
D906, 908 – 913
D 917,
D925,920,922,924
D 917,
D925,920,922,924
LED+9V
Q905
Q907
Q904
Q906
D902
(R)
D927
(G)
KEY2
|
KEY0
S1149-1160
S910,911,918,920,924
S901 – 904, 912,915,917
S910,911,918,920,924
S901 – 904, 912,915,917
60
IIC DATA
55
LED VIDEO
52
LED CD/DVD
53
LED TUNER
54
LED TAPE
56
LED STOP,PAUSE
61
IIC CLK
77
RESET
30 IIC-DATA
29 IIC-CLK
IIC-DATA
IIC-CLK
71 GC-RESET
74 POWER-KEY
73 DISPLAY-KEY
S925
S900
DISPLAY
72 STBY-LED/FAN CTL
4 SIRCS
RESET
X402
16MHz
15 X-IN
13 X-OUT
X401
32.768kHz
10 XC-IN
11 XC-OUT
32
CD-POWER
SYSTEM CONTROL
IC401 (5/5)
69
STBY-RY
12
RESET
20
AC-CUT
B+ SWITCH
Q560, 561
B+ SWITCH
Q504, 505
RECT
D560
D560
M +9V
MT +7V
A +9V
TC +9V
D561 – 563
D660, 661
+9V
REGULATOR
IC561
+9V
REGULATOR
IC560
+3.3V
REGULATOR
IC562
+3.3V
LED+9V
BIAS+3.3V
LEVEL
DETECT
IC402
D505
SWITCHING
REGULATOR
LED DRIVE
Q900,903,917
RECT
D658
D658
RECT
D656
D656
+VL
VL(AC)
F1261
VL
VL
VH
VH
VP
VF
VF
AC3
AC4
NC
NC
AC4
AC3
GND
F1271
F1241
F1251
F1281
R1292
–VL
+VH
–VH
– 33V
REGULATOR
Q1264
POWER ON/OFF
RELAY DRIVE
Q1200
– VG
(-32V)
D1292
RECT
VF1
VF2
RY1200
CN1202
AC IN
T1200
POWER
TRANSFORMER
RESET
SWITCH
Q501
REMOTE CONTROL
RECEIVER
IC903
TO FLUORESCENT
INDICATOR TUBE
FL901
EVER +4V
M+9V
D3.3V
DISPLAY CONTROL
KEY CONTROL
IC902
BUFFER
Q901,902,914
70 BPF2
14
75 JOG
ROTARY
ENCODER
S1161
OPERATION
DIAL
1
2
.
- TUNING + >
HCD-GNX66/GNX77
32
32
HCD-GNX66/GNX77
7-7. PRINTED WIRING BOARD – BD84 BOARD –
• See page 26 for Circuit Boards Location.
Ref. No. Location
IC101
E-9
IC251
C-7
IC301
C-9
IC303
B-10
Q10
F-4
• Semiconductor
Location
: Uses unleaded solder.
TP117(VC)
JPO103(TE1)
JPO102(FE1)
TP124(RFAC)
B13
R412
R422
R406
R252
R251
R182
R181
R423
R151
R143
R142
R141
R133
R132
R131
R114
R113
R112
R111
IC303
IC251
CN101
C252
C251
C194
C181
IC101
C162
C143
C142
C141
C133
C132
C131
C124
C111
C122
C115
C114
C113
C112
C185
C186
R204
R203
C161
R161
C211
C317
R306
C212
IC301
C163
C320
C213
R421
C306
C307
C309
C310
C311
C313
R307
R163
R301
R303
R305
R351
R352
R353
R354
R401
R402
R403
R404
R405
R407
R408
R409
R410
R419
R411
CN201
S101(LIMIT)
M101
SPINDLE
MOTOR
M102
SLED
MOTOR
M
M
1
3
4
5
1
16
17
32
64
49
33
48
A
MAIN
BOARD
(Page 36)
OPTICAL PICK-UP
BLOCK
(KSM-215DCP)
C10
C260
C14
C15
C16
C18
C11
R253
R191
R172
R171
R162
C209
X171
R12
R11
R10
Q10
E
C116
C184
C183
C303
C302
C305
C259
C258
C257
C255
C203
C196
C195
C201
C182
C171
C172
C210
C151
C134
C125
C123
R165
R13
C17
FB301
R201
R173
R205
C174
C318
C314
C308
C312
R313
C315
R302
C316
11
(11)
1-864-566-
BD84 BOARD (SIDE A)
BD84 BOARD (SIDE B)
11
(11)
1-864-566-
2
3
4
5
6
7
8
9
10
11
A
1
B
C
D
E
F
G
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