Power Block (Sr801); Switching Regulator - Sony SLV-798HF Service Manual

SLV-798HF/998HF
POWER BLOCK SR801 (SWITCHING REGULATOR) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
— Ref. No.: SR801 Board; 8,000 Series —
1

POWER BLOCK (SR801)

A
(EXCEPT Chilean, PX MODEL)
F101
2A 125V
B
L
0.1/250
AC IN
H
120VAC
CN101
C
D
E
F
16
Note :
The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
MA-318
REC/PB AMP, VIDEO, AUDIO,
SERVO/SYSTEM CONTROL,
TUNER
JK-159
(LINE-2 IN)
FR-130
(MODE CONTROL)
DM-74
(OPERATION SWITCHES)

SWITCHING REGULATOR

POWER BLOCK SR801
2 3
D107-110
L101 1N4005
D110
C102
0.1/250
C101
D108
R101
6.8M
1/2
C103
0.1/125
C104
470P
125
Note :
Les composants identifiés par
une marque ! sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
POWER BLOCK
4 5
D106
1N4005
R102
100K
D109
+
C106
120/200
R103
D107
100K
C107
4.7/50
R104
10K
Q102
C105
2SC4040
1500P
125
C112
0.0047
GND
C111
0.047
PC101
ON3131
Ref. No min typ
R107
100/1 120/1
R109 560 620
R207 1.5k
1.2k
4-35
6
7
T101 POWER TRANSFORMER
P1
R106
C109
33K/3
0.033
400
FB1
D102
EG01 P2
Q101,102
SWITCHING
Q101
2SC4054
C110
0.047
D103
B1
ERA15-02
*R107
R108
D108
22
MA165
*R109 D104
RD3.0ES
B2
max
120/1
680
2.2k
There are few cases tha
8
D201
S5 PR1003
S4
D202
S3L20U
C202
1000/1
S3
D204
D3S4M
C204
1000/10
IC201
SHUNT REG.
S1
AN1431T
C208
1/50
PC101
ON3131
R2
4
1
D206
PR1003
S6
S8
D207
PR1003
S7
R204
0.47