Schematic Diagram - Power/Sensor Boards - Sony HCD-GX8000 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-20. SCHEMATIC DIAGRAM – POWER/SENSOR Boards –
C501
4.7 R501
50V 1k
R502
47k
C502
470p
T E
L 1 3 9 4 2 2 9 6 5 1 3
C552
470p
R552
47k
NO505
CN701
2P
2P
C551
4.7 R551
TH701
50V 1k
EP502
C512
0.01
(CHASSIS)
CN502
13P
L-IN
A-GND
R-IN
DBFB FEEDBACK
FRONT RELAY
FAN DET
SP PROTECT IN
-B
HP-R
HP-L
(Page 35)
POWER-GND
POWER-GND
SW PROTECT
w w w
.
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C509 R520
R511
22 3.3k
100
100V 1W
D504
MTZJ-T-
72-18C
C503
220p
IC501(1/2)
STK412-150
R505
1k
R504
47k
R514
2.2k
Q503
2SA988TP R515
22k
STANDBY
SWITCH
R582 D581 R513
33k 1SS133T 33k R506
Q504 22k
R503 2SC1841
220 (RG77) Q581
STANDBY
470 (GX8000) 2SC1841
SWITCH
STANDBY
C504 SWITCH
100
C581
10V R581 R519
22
33k 68k D501
50V
1SS133T
C559 R524
R517 D551
22 3.3k
10k 1SS133T
C554 100V 1W
100
10V
R512 R518
1 33k
R516 R556
R553
R561 10k 22k
220 (RG77)
100
470 (GX8000)
D503
MTZJ-T-
72-18C
POWER AMP
JW561
R555
C553 1k
220p
IC501(2/2)
STK412-150
R554
47k
x a o u 1 6 3
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i
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8
R510 R527 R528 R529 R530
0.1 56k 47k 22k 22k
5W
C515
R538 R539
2.2
47k 330
50V
2W
R508
0.1
Q507,508
5W
DC DETECT SWITCH
D502 R537
1SS133T 10k
Q509
2SA1175
Q509 − 511
OVER LOAD
DETECT SWITCH
Q508 Q507
2SC2785 2SC2785
R543
68k
Q501
2SC1841 C514 C516
R544 Q510
100 100
OVER LOAD 10k 2SC2785
10V 10V
DETECT
R507
100k
R523 R522 R521 R532
C507 82k 100k 100k 560k
0.068
C508
0.068
R509
10
1/2W
Q Q
3 7 6 3 1
R559
10
R533
1/2W
47k
C558
0.068
R557
100k Q505
C557 2SC2785
0.068
Q831
Q506
2SC2785
2SC2785
FAN MOTOR
ON SWITCH
Q551
2SC1841
Q505,506
OVER LOAD
TEMPERATURE
DETECT
R531
DETECT SWITCH
220
R558
0.1
5W
R560
0.1
5W
.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : TUNER (FM/AM)
41 41
2 4
9 9 8
RY501
-1
JW566
-2
JW567
D506
1SS133T
Q512
R547 R548
BA1F4M
47k 47k
FRONT SPEAKER
PROTECT RELAY
DRIVE
JW604
Q502
2SC2785
PROTECT
SWITCH
JW563
R545
RY502
4.7k
Q511 C517
-1
2SC2785 10
50V
-2
R540 C524 C523
330 0.01 0.01
R564 R565 2W D510
4.7k 4.7k 1SS133T
5 1 5 0 8 9 2 4 9
D541
D5SBA204101
3
1 4
D543
Q513
2
D5SBA20 C541
BA1F4M
2
0.1
SURROUND
1 4 C545
SPEAKER 0.1
C526 100V
PROTECT
10
RELAY 50V C546
3
R542 R541 C513
2200
DRIVE
100k 100k 0.01
100V
C544
0.1
100V
C592 C591
C596
R592 3300 R591 0.1
2200
100k 50V 100k
100V
AA1
AA2
AA3
AA4
AA5
Q941
2SB1375
-33V
REGULATOR AA6
R943 R942 R945
1k 8.2k 8.2k
D941 C942
MTZJ-T-72 10
-33D 50V
AA7
C943
100
AA8
50V
AA7
AA8
AA6
AA5
AA4
AA3
AA2
AA1
m
c o
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
HCD-GX8000/RG77
2
9 9
TM501
R
FRONT SPEAKER
IMPEDANCE USE 6 − 16Ω
L
R
SURROUND SPEAKER
IMPEDANCE USE 24Ω
L
C525
EP501
0.01
(CHASSIS)
8 2 9 9
NO501
13P
VH
VH
GND
GND
VL
VL
AC3
AC3
AC4
AC4
(Page 47)
VP
VF
VF
NO504
3P
D-GND
EVER+4V
STBY RELAY
(Page 47)
CN503
13P
-VG
D-GND
EVER+4V
STBY RELAY
VF(1)
VF(2)
AC4(1)
AC4(2)
AC3(1)
AC3(2)
(Page 37)
LINK RELAY
FAN ON
STK MUTE