Read Sony HCD-GX255 / HCD-RG170 / HCD-RG470 / MHC-GX255 / MHC-RG170 / MHC-RG470 Service Manual online
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HCD-GX255/RG170/RG470
HCD-GX255/RG170/RG470
6-4. BLOCK DIAGRAM – PANEL, POWER SUPPLY Section –
7
74 I-KEY0
97 I-POWER, DISPLAY
REMOTE CONTROL
RECEIVER
IC610
S601, 602
6
I-VOL-A
21 I-VOL-B
ROTARY
ENCODER
VOLUME
STANDBY
S660
8
SI1
SO1
7
SCK1
36 I-VFD-DATA
35 O-VFD-DATA
37 O-VFD-CLK
16
CE
6
RESET
4
O-VFD-CE
3
O-VFD-RESET
FL701
FLUORESCENT
INDICATOR
TUBE
LED DRIVE
Q601 – 606
D601 – 606
(FRONT PANEL LED)
FL/LED DRIVER
IC701
9
I-SIRCS-IN
F906
MAIN POWER
TRANSFORMER
PT901
SUB POWER
TRANSFORMER
PT902
RELAY DRIVE
Q002
RECT
D902 – 905
REGULATOR
Q903, 904
RECT
D007, 008
RECT
D001 – 004
+3.3V
UNREG
VF2
D006
Q902
D908
D301, 302
W001
(AC IN)
RY901
B+ SWITCH
Q041, 042
68 – 80
G1 – G13
26 – 31
STREAN LED1
– STREAN LED6
– STREAN LED6
S1 – S21
S611 – 617,
S621 – 626,
S631 – 638,
S621 – 626,
S631 – 638,
S641 – 646, 648,
SW601
19 – 22
KEY1 – KEY4
26
O-POWER-RELAY
5
I-AC-CUT
12
I-RESET
RESET SWITCH
Q901
D902
D903
S901
120V
220V
240V
(EXCEPT E2, E3, E51, EA)
(MX)
(RG470)
(GX255/RG170/RG470: AEP, EE, RU)
(RG470: E2, E51, AR, MX)
(EXCEPT E2, E3, E51, EA)
(E2, E3, E51, EA)
F907
RECT
D011 – 014
RECT
D021 – 024
F904
F905
RECT
D401
D401
VOLTAGE
SELECTOR
B–
REGULATOR
Q902
VP
+1.5V
REGULATOR
IC303 (EXCEPT MX)
IC303 (MX)
MP3 +1.5V
EVER +10V
VCC
VREF, VDD
+9V REGULATOR
+9V
+16V
RY B+
FAN B+
+5V
REGULATOR
IC1003
CDG +5V
M+9V
M+7V
REGULATOR
Q043
61
O-CDG-POWER
20
I-AC-PULSE
27
O-FRONT-SP-RELAY
VF1
AMP B–
AMP B+
F908
F909
RECT
D401
D401
AMP –VH
AMP +VH
RECT
D402
D402
AMP –VL
AMP +VL
B+ SWITCH
Q1007, 1008
• Abbreviation
AR : Argentina model
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
EE : East European model
MX : Mexican model
RU : Russian model
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
EE : East European model
MX : Mexican model
RU : Russian model
45 – 58,
61 – 67
3
4
X701
4.19MHz
X1
X2
22 O-STBY-LED
D611
IC901 (4/4) (SUFFIX-11)
IC901 (4/4) (SUFFIX-12)
IC901 (4/4) (SUFFIX-12)
IC011 (SUFFIX-11)
IC011 (SUFFIX-12)
IC011 (SUFFIX-12)
+9V REGULATOR
IC021 (SUFFIX-11)
IC021 (SUFFIX-12)
IC021 (SUFFIX-12)
VOLTAGE DETECT
IC902 (SUFFIX-11)
IC902 (SUFFIX-12)
IC902 (SUFFIX-12)
+3.3V REGULATOR
IC006 (SUFFIX-11)
IC006 (SUFFIX-12)
IC006 (SUFFIX-12)
SYSTEM CONTROLLER
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