Sony HCD-GX255 / HCD-RG170 / HCD-RG470 / MHC-GX255 / MHC-RG170 / MHC-RG470 Service Manual ▷ View online
49
49
HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-28. SCHEMATIC DIAGRAM – CD-G Section – (MX model only)
•
See page 60 for Waveforms.
•
See page 61 for IC Block Diagrams.
•
See page 71 for IC Pin Function Description.
IC1001
C1027
R1015
C1003
C1005
C1006
C1019
C1018
C1016
R1016
R1017
R1037
R1036
R1038
R1005
R1011
C1023
R1012
C1013
C1025
C1007
JR1001
C1031
C1022
R1029
R1013
C1004
R1006
C1024
R1030
R1031
FB1001
C1008
C1010
IC1003
µPC2905
R1033
R1034
R1035
Q1007
IC1002
C1001
R1004
R1020
R1003
R1022
R1021
X1002
R1032
C1015
Q1006
Q1002
C1029
C1014
C1012
Q1005
CN1001
CN1004
C1011
Q1009
IC1005
CN803
C803
R1023
C1028
C1002
L1001
J803
Q1008
L1002
R1051
Q1010
C1026
C1030
Q1001
IC1006
TC9411AFG
220p
100
0.01
0.01
0.01
22p
22p
0
10k
10k
0.0022
0.0047
470P
2.2k
4.7k
1
50V
10k
100 6.3V
0.01
0.01
0
1
50V
22p
1k
2.2k
0.01
4.7k
100
6.3V
22k
75
0
1
50V
100
6.3V
2.2k
2.2k
2.2k
RT1N441C-T
P-1
MSM514400E-60TS
0.01
2.2k
10k
4.7k
220
220
14.31818MHz
10k
0.01
RT1P141C-T
P-1
RT1N441C-T
P-1
0.001
0.01
47
6.3V
RT1N441C-T
P-1
13P
3P
0.01
RT1P141C-T
P-1
SN74AHCT04NSR
2P
0.1
220
100
6.3V
0.01
0
2SB1122
10
10
RT1N441C-T
P-1
1000
6.3V
6.3V
22
6.3V
RT1N441C-TP-1
NJM2561F
SBSO
EXCK
_RST
CDG/_BGC
CDG-DET
SCOR
WFCK
SBSO
EXCK
CDG-POWER
VMUTE
A4
A4
A5
A5
A6
A6
A7
A7
OE
OE
DQ3
DQ4
DQ3
DQ4
_RST
CDG/_BGC
CDG-DET
CDG-POWER
VMUTE
SCOR
WFCK
SESUB
CLCK
DATA
SBSY
SFSY
MUTE
VDD1
VSS1
MCE
MCDO
MCDI
MCCK
VA0
VA1
VA2
VA3
VA7
VSS2
VDD2
VD0
VD1
VD2
VD3
VA4
VA5
VA6
WE
RAS
CAS
BLNKIN
BIN
GIN
RIN
GDET
VON
TEST1
TEST2
LINESW
VREF
AVDD
VDOUT
AVSS
BIAS1
BIAS2
VSS3
VDD3
QNG
PNG
DEN
FSC
SENTSC
PDOWN
XI2
XO2
XI1
XO1
HSYNC
VSYNC
RESET
DQ1
DQ2
A9
A0
A1
A2
A3
VCC
A4
A5
A6
A7
A8
DQ3
DQ4
VSS
OE
1A
1Y
2A
2Y
3A
3Y
GND
4Y
4A
5Y
5A
6Y
6A
VCC
SCOR
WFCK
SBSO
EXCK
GND
CDG/_BGC
CDG-DET
CDG-POWER
MUTE_DATA
(AMUTE)
_CDG-RST
VIN
GND
VOUT
VSAG
VCC
SAVE
_PWR
_PWR
VMUTE
CNG409.ULA
(VIDEO MUTE)
(CD-POWER)
(SCOR)
GND
VIDEO
GND
GND
+9V
RAS
WE
CAS
OE
GND
VIDEO OUT
VIDEO OUT
D-RAM
Q1007,1008
B+ SWITCH
+5V REGULATOR
O
I
G
VIDEO AMP
VIDEO MUTING
LEVEL SHIFT
SCHMIT
TRIGGER
Q1005,1009
Q1002,1006
LEVEL SHIFT
Q1001
NTSC/PAL SWITCH
CD GRAPHICS DECODER
B1
MAIN BOARD
(3/3)
CN331
B2
MAIN BOARD
(3/3)
CN331
(SUFFIX-11)
(SUFFIX-12)
(Page 35)
(Page 39)
50
50
HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-29. PRINTED WIRING BOARD – PANEL Section (1/2) –
: Uses unleaded solder.
•
See page 25 for Circuit Boards Location.
E
JW
604
JW605
JW607
JW
608
JW
609
JW
610
JW
611
JW
612
JW
613
JW
614
JW
615
JW
616
JW
617
JW
618
JW
619
JW
620
JW
621
JW
622
JW
623
JW
624
JW
625
JW
626
JW627
JW628
JW629
JW630
JW631
JW632
JW633
JW634
JW635
JW636
JW637
JW638
JW639
JW640
JW641
JW642
JW643
JW644
JW645
JW
648
JW
649
JW
650
JW651
JW652
JW653
JW654
JW655
JW
657
JW
658
JW
659
JW
660
JW
662
JW663
JW
664
JW
6
65
JW666
JW
669
JW670
JW671
JW672
JW673
JW674
JW675
JW676
JW677
JW
678
JW
679
JW
680
JW
6
81
JW682
JW683
JW684
JW685
JW686
JW687
JW688
JW689
JW690
JW
691
JW
692
JW
646
JW
647
JW
661
JW668
JW667
CN602
S631
S632
S621
S633
S622
S634
S
60
2
S611
S641
S642
S643
S644
S645
S646
D605
D602
D611
S601
S612
S613
S614
S615
S616
S617
FL701
FLOURESCENT
INDICATOR TUBE
CN601
C702
C709
C712
C625
C622
C621
X701
S648
D604
D606
D603
D601
C631
R
706
R
707
C708
C71
1
C
707
R704
R682
Q602
R620
R607
R
623
R648
R627
R619
R
703
R
702
C
703
R
701
Q605
R625
R622
R621
R684
R683
R685
R672
R673
R680
R681
R670
R671
R709
R
662
R663
R664
R665
R666
R667
R652
R651
R650
R
660
R
6
61
R696
R695
R694
R
693
R
692
R
691
R690
R
70
5
C701
R605
R615
R609
R602
R612
R647
R645
R646
C710
R
708
R633
R639
C704
Q604
Q603
Q606
Q601
R698
R697
R604
R614
R606
R616
R603
R613
R
611
R
601
R631
R635
R637
R641
R628
ILLUMINATION
PLAY MODE/
TUNING MODE
MULTI PLEX
1-865-470 -
11
(11)
PANEL BOARD
ENTER
EFFECT ON/OFF
SURROUND
PRESET EQ
GROOVE
TUNER/BAND
TAPE A/B
AUDIO IN
CD SYNC
REC PAUSE/
START
CD
P FILE
DISPLAY
E
E
(RG470)
(RG470)
E
20
21
61
60
41
40
80
1
(RG470)
(RG470)
VOL BOARD
CN603
P
1
5
S601, 602, 611 – 617, 621, 622,
S631 – 634, 641 – 648
Z
(CD)
DISC SKIP/
EX- CHANGE
DISC 3
DISC 2
DISC 1
(MX)
1
3
5
4
STANDBY
E
E
D601 – 606
(STREAM)
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
11
IC701
IC610
(MX)
MAIN BOARD
CN991
MAIN BOARD
CN991
(SUFFIX-12)
(SUFFIX-11)
D2
D1
(Page 32)
(Page 36)
(Page 51)
IC701
D-7
Q601
E-9
Q602
E-9
Q603
D-9
Q604
D-4
Q605
E-4
Q606
E-4
Ref. No. Location
Ref. No. Location
D601
E-8
D602
E-8
D603
D-8
D604
D-4
D605
E-4
D606
E-4
D611
B-10
IC610
B-4
•
Semiconductor Location
51
51
HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-30. PRINTED WIRING BOARD – PANEL Section (2/2) –
: Uses unleaded solder.
•
See page 25 for Circuit Boards Location.
JW603
CN603
S635
S636
S637
S638
S623
S624
S625
S626
S660
SW601
R678
R674
R675
R676
R677
R688
R687
R686
VOL BOARD
x
X
B
M
m
l
– EQ + L
– TUNING +
1-865-471-
11
(11)
ALBUM +
ALBUM –
PANEL BOARD
CN602
P
1
1
3
5
EQ BAND
MASTER
VOLUME
VOLUME
ROTARY ENCODER
S623 – 626,
S635 – 638
1
2
3
4
5
6
7
A
B
C
D
E
F
G
1
2
3
4
5
6
7
A
B
C
D
E
F
G
(Page 50)
52
52
HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-31. SCHEMATIC DIAGRAM – PANEL Section (1/2) –
•
See page 60 for Waveform.
•
See page 71 for IC Pin Function Description.
D1
MAIN BOARD
(1/3)
CN991
D2
MAIN BOARD
(1/3)
CN991
(SUFFIX-11)
(SUFFIX-12)
R627
R628
C625
R
706
R7
07
R7
03
C701
C703
C704
R702
R704
R701
R609
D605
D602
R620
R619
C631
IC610
R621
R623
R622
R625
C712
C711
C710
R633
R639
C708
C709
C707
R705
R708
R709
C702
R612
R605
R602
R615
X701
CN601
FL701
C622
IC701
R616
R606
R614
R604
R613
R603
R611
R601
D603
D604
D606
R631
R635
R637
R641
Q606
Q604
Q603
Q601
C621
Q605
D611
Q602
D601
R607
22
22
22 50V
1
k
1
k
100
0.1
0.1
1000p
1k
0
0
100
SLR325VC
SLR325VC
47
100
47
10V
RPM7240-H18
22k
4.7k
22k
4.7k
22 50V
0.01
0.1
10k
10k
0.01
47
10V
4700p
2.2k
1k
1k
47
10V
1k
1k
1k
1k
4.19M
19P
2.2
50V
50V
-8BT-A
1k
1k
1k
1k
1k
1k
1k
1k
SLR325VC
SLR325VC
SLR325VC
10k
10k
10k
10k
2SC3052
2SC3052
2SC3052
2SC3052
2.2
50V
50V
2SC3052
SELU5223C
2SC3052
SLR325VC
1k
A
1
A2
A3
A4
A5
A
6
A7
A
8
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
RMS
V-A
V-B
K0
RMS
VDI
VDO
VCL
VCE
RST
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
G13
ST1
ST2
ST3
ST4
ST5
ST6
RST
VCL
VCE
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
G13
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
VDO
VDI
ST2
ST5
ST1
ST3
ST4
ST6
R
ESE
T
V
SS
1
V
D
D
1
X1
X2
SC
K1
S
I1
S
O
1
K
E
Y1
K
EY2
KEY3
KEY4
VSS0
AVDD
VDD0
STREAM LED2
STREAM LED1
STREAM LED3
STREAM LED4
STREAM LED5
STREAM LED6
NC
NC
NC
NC
NC
NC
NC
NC
N
C
N
C
N
C
S
1
S
2
S
3
S
4
S
5
S6
S
7
S
8
S
9
S
1
0
S
11
S1
2
S
1
3
S
14
S15
V
D
D
2
V
LO
D
S16
S17
S18
S19
S20
S21
G1
G2
G3
G4
G5
G6
G7
G8
G9
G10
G11
G12
G13
N
C
N
C
NC
N
C
N
C
N
C
N
C
C
E
SW LED
IC
NC
A
VS
S
N
P
N
P
N
P
F1
F2
N
X
N
C
NC
N
C
N
X
N
P
-VFL
VF1
VF2
STBY-LED
VOL-A
VOL-B
SIRCS
VFD-DO
VFD-DI
VFD-CLK
VFD-CE
D-GND
9V
KEY0
M-GND
VDD(SWITCHED)
VDD(EVER)
RESET
D-GND
(1/2)
STANDBY
D601-606
(STREAM)
REMOTE CONTROL RECEIVER
FLUORESCENT INDICATOR TUBE
FL/LED DRIVER
Q601-608
LED DRIVE
(RG470)
mPD780232GC-508
(Page 53)
(Page 33)
(Page 37)
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