Sony KS-50R200A Service Manual page 132

06 SXRD AG UG ñBOARD BLOCK DIAGRAM (Power map)
CN8250
To G
A20 / B20 / C20
7V
A21 / B21 / C21
C22
11V
A15 / B15/ C15
A16 / B16 / C16
PS9150
IC8252
9V Regulator
PQ200WNA
To TUG
CN8008
IC8253
FAN Drive
PQ200WNA
A32
STBY5V
A26
A9V
Audio SW
A12
IC8957
8V Regulator
TL431CPK
A1 / B1 / C1
Audio AMP
A2 / B2 / C2 F9150
A3
AG Trouble shooting (No Power)
In case of no power, check the below point
STBY5V is coming??
STBY 3.3V is OK?
STBY 1.8V is OK?
X8401
BE3.3V
D8710 is blinking?
IC9156 9.1V
Audio AMP
9V Regulator
PQ200WNA
PS8250
V9V
Video SW
To Splitter
CN8252
TU33V
IC8250
DC/DC converter
TK11819MTL
To FAN
CN8252
3.3V Regulator
MM3123DPLE
8V
Audio Processor
CN8001
If no, G board trouble
If no, IC8400 and around circuit problem
If no, IC8401 and around circuit problem
16.5M X ' tal is OK?
If no, X8401 or TV Micro (IC8703) problem
DEM Power is OK?
If no, B2 board problem
If no, DE Micro (IC8705) Problem
– 4-89 –
KS-50R200A/60R200A/70R200A
RM-GA006
TU5V
D5V
IC8251
DC/DC converter
V5V
BD9851
D3.3V
To TUG
CN8008
Main Tuner
STBY3.3V
IC8400
To H2
CN8001
TVM
To H2 STBY1.8V
IC8401
1.8V Regulator
S-1132818-M5T1G
DEM
To S1
CN8701
To S2 / Ballast
CN8702
RM-GA006 RM-GA006
CN8005
To B2
B4 / A5 / B5
A6 / B6 / A7
B7
A11 / A12
A13
To TUG
CN8008
Main Tuner
Audio Processor
Audio Delay
Video SW
A15
Audio Delay
CN8001
To H2
A14
TVM
BE3.3V
A9 / A10