Read Sony HCD-GX255 / HCD-RG170 / HCD-RG470 Service Manual online
HCD-GX255/RG170/RG470
9
9
HCD-GX255/RG170/RG470
3-4. SCHEMATIC DIAGRAM – MAIN Board (1/3) –
•
See page 5 for Waveforms.
•
See page 15 for IC Pin Function Description.
(Page 10)
D923
D943
R904
R913
R
9
15
R920
R921
R922
R925
R927
R928
R
9
2
9
R938
R939
R950
R
9
5
2
R
9
5
4
R
9
7
9
R
9
8
0
R
9
9
2
R
9
9
3
R999
R998
R997
R996
CN991
CN341
R365
R363
R367
R361
R369
R359 R357
R355
R370
R366 R364
R368
R360 R358
R356
Q342
Q344
Q346
R341
R343
R344
R342
R345
R346
R354
R353
R352
R351
R350
R349
R348
R347
C
9
2
4
R958
R953
R
9
6
8
R
9
6
7
R
9
6
5
R
9
6
3
R
9
6
1
R
95
9
Q345
D341
R362
R245
R936
R924
R923
R981
R982
C928
C918
C923
C925
R
9
37
C919
C912
C927
C914
X902
R
9
3
5
C
91
0
R926
R957
R956
R955
R940
R910
R909
R908
R907
D
9
1
0
C908
C909
IC902
D902
C902
R912
D901
R903
R901
R941
R942
R943
C921
R947
R944
R949
R948
D947
R951
R945
D921
Q903
Q341
C922
C901
R977
R976
R973
R971
R
9
1
9
R914
C916
C970
C917
R902
R946
R1977
R1974
R1973
R1972
R1971
C911
R911
R
9
1
8
C904
Q902
R932
Q901
Q343
Q904
Q933
X901
R1975
IC901
R905
C906
R933
R
9
7
0
R931
MC2840
MC2838
1k
1k
1
0
0
100
1M
220k
100
100
100
1
0
0
10k
100
4.7k
10
0
10
0
1
0
0
1
0
0
1
k
1
k
100
100
100
100
19P
13P
10k
1k
22k
22k
22k
10k
1k
22k
22k
10k
1k
22k
10k
1k
22k
KTA1273
-Y-AT
KTA1271Y
-AT
KTA1271Y
-AT
10k
10k
1k
1k
10k
1k
4.7k
4.7k
4.7k
47k
4.7k
4.7k
47k
4.7k
0
.1
10k
10k
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
10
0
RT1N431C
-TP-1
MC2836
22k
10k
22k
100
100
100
100
1000p
1000p
0.1
0.1
1
0
0
k
0.1
220p
22p
22p
16MHz
1
0
k
0.1
100
100
100
100
10k
10k
22k
47k
47k
1S
S
35
5
T
E
-1
7
0.1
0.1
PST3429UL
MC2836
10
50V
1k
UDZSTE
-174.7B
10k
100k
2.2k
10k
4.7k
2.2
50V
50V
220k
220k
10k
2.2k
1SS355TE
-17
220
220
MC2840
KTA1271Y-AT
RT1N431C
-TP-1
4.7
50V
50V
100
16V
16V
10k
10k
10k
10k
0
100
1000
6.3V
6.3V
1000p
0.1
0
0
10k
10k
10k
10k
10k
1000p
100
2
2
0
k
0.1
2SC3052
2.2k
2SC3052
RT1N431C
-TP-1
2SC3052
RT1N431C
-TP-1
32.768KHz
10k
M30302MCP
-A05FPU0
10k
10
50V
10k
1
0
0
10k
A
1
A
2
B2
B3
B5
B6
B7
B4
A3
A4
VDI
VDO
VCE
VCL
V-B
V-A
KEY
RMC
V-2
V-1
VRE
T-MU
T-CE
T-DO
T-CL
C-OS
C-SE
C-TF
STK-M
SYS-M
VDO
STBY
I-HP/AUDIO
I-MIC
D1
D2
D3
D4
D5
D6
D7
D1
D2
D5
D3
D4
STBY
O-RP
O-BI
TA-AMS
V-1
V-2
KEY
M-DA
M-CL
VRE
VCE
V-A
RMC
V-B
ACP
PROTECT
PROTECT
KEY
C-E1
C-E2
C-E3
C-7
R-C
C-11
C-3
C-6
C-5
VCL
VDI
D7
D6
VF1
VF2
VFL-
P-RELAY
FSP
C-12
C-TR
C-LF
C-LR
C-4
C-10
C-14
C-15
C-13
C-9
C-8
C-1
R-D
T-ST
T-SD
T-DI
I-STREAM
I-VACS
I-TAPE-AMS
I-PROTECTOR
O-VFD-DATA
I-VFD-DATA
O-VFD-CLK
O-FRONT-SP-RELAY
O-XTCN
I-OPEN-SW
I-CD-NUMBER-SENS
I-E-3
I-E-2
I-E-1
O-TM-F
O-TM-R
O-LM-F
O-LM-R
D-GND
REC(REW)
B-SOL
B-MODE
B-HALF
B-PHOTO
REC(FWD)
CAPM+
A-HALF
A-PHOTO
A-SOL
A-MODE
M-GND
O-POW
ER-RELAY
I-SCOR
O-MOTOR
O-A-SOL
O-B-SOL
I-SIRCS-IN
I-RESET
I-MIC
O-SYS-M
UTE
I-AC-PULSE
I-AC-CUT
M-GND
O-VFD-RESET
O-S
TK-M
UTE
O-SW
R
I-TUNED
O-ST-MUTE
I-STEREO
I-RDS-DATA
O-LC72121-CE
O-LC72121-DO
O-LC72121-CLK
I-KEY0
VSS
VCC2
xWR
xHOLD
O-STBY-LED
I-VOL-A
I-VOL-B
NMI
VCC1
VSS
XCOUT(32.768KHZ)
XCIN(32.768KHZ)
CNVSS
BYTE
O-VFD-CE
NC
AVCC
VREF
XOUT(16M
HZ)
XIN(16MHZ)
I-POWER,DISPLAY
AVSS
O-BIAS
O-REC/PB
I-TAPE-B-STAT
I-TAPE-A-STAT
I-REAL-A
I-REAL-B
I-RDS-CLK
O-M
P3-CLK
O-CD-CLK
-VFL
VF1
VF2
O-BD3401-
DATA
O-BD3401-
CLK
STBY-LED
VOL-A
VOL-B
KEY
SIRCS
VFD-DO
VFD-DI
VFD-CLK
VFD-CE
D-GND
9V
VDD(SWITCHED)
VFD-RESET
D-GND
-DATA
I-HP/
AUDIO IN
O-MP3
O-CD-DATA
I-CD-SENS
(1/3)
I-MP3
-DI
TAPE MECHANISM
DECK BLOCK
SUPPLIED WITH
THE ASSEMBLED
BLOCK
SYSTEM CONTROLLER
Q903,904
REGULATOR
VOLTAGE
DETECT
INVERTER
RESET
SWITCH
Q341,342
CAPSTAN/REEL MOTOR DRIVE
Q343,344
PLUNGER DRIVE(DECK-B)
Q345,346
PLUNGER DRIVE(DECK-A)
AMP
ON/OFF
VDD(EVER)
I-MODEL7
I-LC72121-DI
I-M
ODEL1
I-M
ODEL2
I-MODEL3
I-M
ODEL4
I-MODEL5
I-M
ODEL6
(AEP,EE)
(AEP,EE)
(RG470)
(GX255/RG170)
(AEP,EE,E2,E51)
(CND,RU)
(CND,E2,E51)
NC
NC
NC
NC
NC
NC
NC
(AEP,EE,RU)
O-SSTB-MP3
/M-MUTE
O-REQ-MP3
I-REQ-MP3
O-XLAT
I-ACK-MP3
O-XLAT-MP3
O-XRST
(Refer to page 52 of
service manual)
(Page 10)
(Page 11)
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