DOWNLOAD Sony MHC-GNX90 Service Manual ↓ Size: 5.43 MB | Pages: 87 in PDF or view online for FREE

Model
MHC-GNX90
Pages
87
Size
5.43 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / BRAZIL
File
mhc-gnx90.pdf
Date
PREV: Sony NWZ-S754 / NWZ-S755 Service Manual

Sony MHC-GNX90 Service Manual ▷ View online

HCD-GNX90
7-3. DIAGRAMA EM BLOCO  – SEÇÃO TAPE – 
DECK-A
C
PB
HEAD
REC/PB
HEAD
ST-L
E
MAIN
SECTION
(Page 29) 
REC-OUT-L
D
TC BLOCK 
32
A TRIG 
DRIVE
R-CH
FM/AM TUNER UNIT 
CN509
ANTENNA
ST-L
FM ANT 
AM ANT 
AM ANT 
ST-R
TUNED
ST-DIN
ST-DOUT
ST-CLK
ST-CE
FM 75 
COAXIAL
CAP M+ 
BTRGM+
ATRGM+
AHALF
BHALF
APLAY
BPLAY
B SHUT 
A SHUT 
REC(FWD)
REC(REV)
CAPM-CONT
B-TRIG
A-TRIG
TC-RELAY
A-HALF
B-HALF
A-PLAY
B-PLAY
BSHUT
ASHUT
REC BIAS 
PB-A/B
ALC
REC-MUTE
TC-MUTE/IO-EXP DATA OUT 
EQ OUT1
A
B
TUNED
MC DOUT(ST) 
MC DIN(ST) 
ST-CLK
ST-CE
34
28
27
26
24
21
56
59
58
67
65
90
89
51
47
94
48
57
53
B TRIG 
DRIVE
55
CAP MOTOR 
DRIVE
54
88
86
84
87
85
13
11
15
14
PB OUT1
TAI1
REC IN1 
AIN1
REC-OUT1
EQ
TC-PB-L
BIN1
A/B
ALC ON/OFF
REC MUTE ON/OFF
MUTE ON/OFF 
DECK A/B SELECT 
PB/REC EQUALIZER AMP 
IC301
Q340, 343 
Q342, 345 
Q341,344
SYSTEM CONTROL 
(CD/TAPE MECHANISM CONTROL) 
IC401(2/5)
TEST
CONNECTOR
CN510
R-CH
R-CH
R
L
MUTE
Q280
MUTE DRIVE 
Q542, 543 
DECK-B
BIAS OSC 
Q370
TRAP
SWITCH
DRIVE
Q377, 379 
Q382, 383 
R-CH
Q376
BIAS
SWITCH
DRIVE
R-CH
Q373, 374 
Q381
L – CH 
R – CH 
R-CH
C174, L104 
BIAS+9V
ERASE
HEAD
Q378,380
T301
L – CH 
R – CH 
AM
MAIN
SECTION
(Page 29) 
MAIN
SECTION
(Page 29) 
• R-CH is omitted due to same as L-CH. 
• SIGNAL PATH 
: TUNER (FM/AM) 
: PLAYBACK (DECK A) 
: PLAYBACK (DECK B) 
: RECORD 
HCD-GNX90
29 29
7-4. DIAGRAMA EM BLOCO  – SEÇÃO PRINCIPAL – 
HCD-GNX90
TAPE
SECTION
(Page 28) 
J101
C
(Page 28) 
(Page 28) 
D
E
R-CH
VOLUME
CONTROL
CPU
INTERFACE
INPUT
SELECT
SWITCH
SURROUND OR 
DPL BUFFER 
MID/
BASS & 
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
14
15
24
22
16
21
4
19
IC1100(1/2)
17
A
B
A
(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
18
6
3
5
INB1
IND1
MIC 2 
MIC AMP 
ECHO LEVEL 
MIC LEVEL 
8
MIC
RECB1
7
MIC OUT 
C
C
B
A+9V
+
2
1
6
3
9
7
DIGTAL
ECHO
IC1101
LPF2
OUT
LPF1
IN
81
82
66
H
MUTE
Q180, 181 
Q544,545
BUFFER
J1100(1/3)
J1100(2/3)
J1101(3/3)
J1100(3/3)
MIC 1 
F
DISPLAY
SECTION
(Page 31) 
AMP
SECTION
(Page 30) 
G
AMP
SECTION
(Page 30) 
• R-CH is omitted due to same as L-CH. 
• SIGNAL PATH 
: TUNER (FM/AM) 
: CD 
: TAPE PLAY 
: RECORD 
: MIC INPUT 
HCD-GNX90
30 30    
HCD-GNX90
7-5. DIAGRAMA EM BLOCO  – SEÇÃO AMP – 
H
F-L
MAIN
SECTION
(Page 29) 
F-R
IC600
POWER AMP 
IC550
OVER CURRENT 
PROTECTOR
: FM 
MUTING
Q604, 606, 610 
DBFB F/B 
78
70
STK-MUTE
52
THERMAL VACS
PROT
STK-MUTE
4
3
12
STK MUTE 
FAN DET 
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
61
UNDER VOLTAGE DET 
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) 
TM600
TM601
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
(Page 31) 
J
DISPLAY
SECTION
(Page 31) 
I
OVER
LOAD
DC DET 
VP
OCP
CT
OUT
D624
D550
2
1
Q648
18
11
10
9
14
8
Q506
• SIGNAL PATH 
HCD-GNX90
31 31
HCD-GNX90
7-6. DIAGRAMA EM BLOCO  – SEÇÃO DISPLAY  – 
MAIN
SECTION
(Page 29) 
S1200
VOLTAGE
SELECTOR
220V 
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
. - TUNING + > 
X
AMP
SECTION
(Page 30) 
J
X
AMP
SECTION
(Page 30) 
I
X
F
CD
SECTION
(Page 27) 
B
SPEANA
BPM LOW 
FAN CTL 
P1 – 36 
VF1
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
D906, 908 – 913 
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 
60
IIC DATA 
52
LED CD/DVD 
53
LED TUNER 
54
LED TAPE 
56
LED STOP,PAUSE 
61
IIC CLK 
30 IIC-DATA
29 IIC-CLK
IIC-DATA
IIC-CLK
S925
63
OVER VOLTAGE 
MT +7V 
VL(AC)
VH
+VH
–VH
VF2
IC902
S1200
55
LED VIDEO 
X401
32.768kHz
10 XC-IN
11 XC-OUT
32
CD-POWER
77
RESET
71 GC-RESET
74 POWER-KEY
73 DISPLAY-KEY
S900
DISPLAY
72 STBY-LED/FAN CTL 
4 SIRCS
RESET
X402
16MHz
15 X-IN
13 X-OUT
SYSTEM CONTROL 
IC401 (5/5) 
69
STBY-RY
12
RESET
20
AC-CUT
B+ SWITCH 
Q560, 561 
B+ SWITCH 
Q504, 505 
OVER VOLTAGE 
DETECT
Q550
RECT
D560
M +9V 
A +9V 
TC +9V 
D561 – 563 
D660, 661 
+9V
REGULATOR
IC561
IC560
+9V
REGULATOR
+3.3V
REGULATOR
IC562
+3.3V
LED+9V
BIAS+3.3V
LEVEL
DETECT
IC402
D505
SWITCHING
REGULATOR
LED DRIVE 
Q900,903,917
RECT
+VL
Q501
D658
RECT
D656
F1261
VL
VL
VH
VP
VF
R1292
– 35V 
VF
NC
AC3
GND
F1271
F1281
FL901
AC3
AC4
NC
AC4
F1241
F1251
–VL
REGULATOR
– VG 
Q1264
POWER ON/OFF 
D1292
RELAY DRIVE 
Q1200
(-32V)
RECT
VF1
CN1202
T1200
POWER
TRANSFORMER
RESET
REMOTE CONTROL 
RECEIVER
IC903
TO FLUORESCENT 
RY1200
SWITCH
INDICATOR TUBE 
EVER +4V 
M+9V
D3.3V
DISPLAY CONTROL 
KEY CONTROL 
BUFFER
Q901,902,914
70 BPF2
14
75 JOG
ROTARY
ENCODER
S1161
OPERATION
DIAL
1
2
|
0V
|
127V
AC IN 
HCD-GNX90
32 32
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