Sony HCD-XG55 Service Manual ▷ View online
HCD-XG55
29
29
– DISPLAY/KEY CONTROL/POWER SUPPLY Section –
+10V
REGULATOR
IC931
TUNER
B+ SWITCH
Q931, 932
+12V
REGULATOR
IC932
+7V
REGULATOR
IC933
+7V
REGULATOR
IC901
–7V
REGULATOR
IC951
ST +10V
(FM/AM TUNER UNIT B+)
FAN MOTOR B+
TC M+12V
(TC MOTOR SECTION B+)
CD M+7V
(CD MOTOR SECTION B+)
B+ SWITCH
Q911, 912
B+ SWITCH
Q901, 902
B– SWITCH
Q903 – 905
Q903 – 905
+5V
REGULATOR
IC911
RECT
D833 – 836
RECT
D841 – 844
POWER AMP (IC801),
PROTECT CIRCUIT
POWER
TRANSFORMER
T951
RECT
D832
D832
–35V
REGULATOR
Q903, 908
AC IN
TC, PANEL,
AUDIO
A+7V
A–7V
VF
TO FLUORESCENT
INDICATOR TUBE
(FL601)
VF
+VL
–VL
REMOTE CONTROL
RECEIVER
IC702
GRID DRIVE
Q605, 606
FLUORESCENT INDICATOR TUBE DRIVER,
KEY CONTROL
IC601
SYSTEM CONTROLLER
CD MECHANISM
CONTROL
IC501 (4/4)
LED DRIVER
IC701
BAND-PASS FILTER
IC602
Q604
+5V (LED)
BPF 0
19
BPF 2
20
BPF 3
21
BPF 4
GRID DRIVE
Q607
DET
DET
B.P.F.
22
ALL BAND
REC IN
LINE
IN
1
SIRCS
ROTARY
ENCODER
S763
ROTARY
ENCODER
S736
74 JOG A
9
VOL A
75 JOG B
10
72
70
VOL B
XOUT
XIN
B+ SWITCH
Q602, 603
KEY 0 – KEY 4
BPF 1
F02
F04
F05
F06
F05
F06
F03
GR-1
(Page 28)
(Page 28)
F
D611 – 614, 621, 622,
D700 – 710, 713 – 719,
D741, 791
D700 – 710, 713 – 719,
D741, 791
SPEANA
LED SEL
7
LED DAT
5
LED SCK
3
LED LATCH
DATA
CLK
6
13
14
15
43
I2C DATA
I2C CLK
IIC-DATA
IIC-CLK
RESET
RESET
18
79
78
29
WAKE UP
WAKE UP
8
D-SW
S742
80
18
30
CD-POWER
5
POWER
Q906
2
73
17
14
13
12
REC
LEVEL
LEVEL
11
15
16
4
6
11 – 15
SEG-1 – SEG-23
44 – 46
GR-15, GR-16
28 , 27
GR-2 – GR-14
42, 40 – 29
17, 19 – 23, 1 – 4, 7 – 11
P1 – P6, P7 – P10, P12 – P16
S763
(JOG DIAL)
S601 – 607, 611 – 619, 621 – 627,
S701 – 710, 712 – 732, 741, 743 – 757
S736
VOLUME
X601
12.5MHz
G
STB
LED DRIVE
Q601
LED STANDBY 77
+5V (LED)
(PANEL SECTION B+)
D+5V (UNSW)
(RDS SECTION B+)
FLUORESCENT INDICATOR TUBE
FL601
D601
LID (CD)
OPEN/CLOSE
–35V
FL DRIVER (IC601)
B–
CD A+5V (SW) ,
CD D+5V (SW)
CD MECHANISM
DECK SECTION
B+
Q914
AU D+5V
M62493FP (IC101) B+
D+5V (SW)
(CD SENSOR SECTION B+)
4
KEY POWER ON/OFF
KEY POWER
SAVE/DEMO
SAVE/DEMO
2
SIRCS BUFFER
Q608, 609
S608
POWER
SAVE/DEMO
(STANDBY)
S609
B+ SWITCH
Q913
RECT
D902 – 905
+5V
REGULATOR
IC901
EVER +5V
SYSTEM CONTROLLER (IC501) ,
FL DRIVER (IC601) B+
RY901
STBY RELAY 43
SUB POWER
TRANSFORMER
T901
POWER ON/OFF
RELAY DRIVE
Q901
HCD-XG55
30
30
7-2.
PRINTED WIRING BOARD – BD Board –
•
See page 25 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
Q101
C-3
• Semiconductor
Location
Ref. No.
Location
IC101
C-2
IC102
B-1
IC103
B-1
IC101
IC102
IC103
KSS-213DH
19
)
(
)
(
)
(
TP(VC)
TP(RF)
TP(TE)
TP(FE1)
TP(FE)
TP
(AGCCON)
TP(GND)
21
21
31
31
,
,
21
21
31
31
,
,
MAIN BOARD
CN411
(Page 40)
HCD-XG55
31
31
7-3.
SCHEMATIC DIAGRAM – BD Board –
•
See page 25 for Waveforms.
•
See page 52 for IC Block Diagrams.
MAIN
BOARD
CN411
(Page 38)
D+5V (SW)
L-CH
R-CH
A+5V (SW)
CD-DATA
CD-CLK
SQ-DATA
SQ-CLK
M+7V (UNSW)
OPTICAL PICK-UP
BLOCK
(KSS-213DH)
2.2
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD STOP
(
no mark : CD STOP
(
) : CD PLAY
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
HCD-XG55
32
32
7-4.
PRINTED WIRING BOARDS – CD MOTOR Section –
•
See page 25 for Circuit Boards Location.
IC201
IC202
B
MAIN BOARD
CN412
(Page 40)
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