Read Sony HCD-RG88 Service Manual online
HCD-RG88
35
35
7-14. SCHEMATIC DIAGRAM – MAIN Board (2/4) –
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
R814
C783
CN891
C892
Q891
R891
R893
Q892
R921
CN781
CN901
R819
R869
R892
R866
R816
R862
R864
R510
R865
R863
R861
R508
R501
CN903
JW813
JW815
Q504
Q505
C504
Q861
C861
Q862
Q812
C863
C813
TM801
M891
R825
JW901
JW902
Q825
Q824
D801
RY801
R803
1k
0.1
3P
0.1
2SB1116
10k
2.2k
2SC2603
47
1W
1W
10P
13P
680
2W
680
2W
4.7k
56
56
10k
1k
470k
100k
100k
1k
15k
68k
5P
FN1F4M
FA1A4M
1
50V
FN1F4M
47
50V
2SC3661
2SC3661
4.7
100V
4.7
100V
3.3k
2SC1623
FA1L3Z
1SS355
270
A1
A2
A3
A4
A5
A6
A7
A8
D
1
D
2
D
4
D
5
D
6
D
7
D
8
88
87
ZZ1
ZZ2
ZZ3
97
78
80
2
3
FAN+
FAN-
SP PROTECT IN
FAN DET
-B
R-IN
A-GND
SW PROTECT
HP-R
HP-L
POWER-GND
POWER-GND
L-IN
HP-R
HP-GND
HP-L
A+10V
MIC-SIG
GM(A)-R
GM(A)-GND
GM(A)-L
SW-
SW-
SW+
SW+
(2/4)
IMAGINARY_GND
-1
-2
SWITCH
DRIVE
SWITCH
MUTING
CONTROL
SWITCH
MUTING
CONTROL
SWITCH
MUTING
CONTROL
MUTING
HEADPHONE
MUTING
HEADPHONE
Q891,892
FAN MOTOR
DRIVE
(FAN)
MIC-AGND
HEADPHONE CONTROL
FRONT RELAY
DBFB FEEDBACK
SUB WOOFER OUT
OVER LOAD
DETECT
RELAY
PROTECT
SUB WOOFER
IMPEDANCE USE 8Ω
(Page 41)
(Page 34)
(Page 37)
(Page 43)
(Page 39)
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