Sony PCS-1500 Service Manual page 101

C941
R926
from CPU BLOCK
STANDBY
SLEEP
from Output Port of IC750
(NETIF BLOCK)
StbyLED
PCS-1500/1500P
Step Down Converter(IC900)
MAX1626ESA
V+
+12V
R900
CS
SHDN EXT Q900
\3/5 OUT
+12V
+3.3V-2
C927
+12V
Voltage Regulator(IC904)
NJM2370U10
+12V
VIN VOUT
CTL
+5V
"STANDBY"
D908
Blankig
Generator
Fig. 3-5 Power Block
Step Down Converter(IC901)
MAX1626ESA
+12V
C918
+12V
L900
+3.3V
C900 \3/5
Step Down Converter(IC902) +12V
MAX786CAI
C926 V+
Q902 DH3
R902 L902
LX3
Q903 DL3
CS3
FB3
ON3
+12V
+10V
C917
Control
Logic
Blanking
Generator
3-2. Circuit Description of the Respective Boards
+12V
V+
R901 C922
CS
EXT Q901
L901
OUT C901
C932
DH5 Q906
L903 R907
LX5
DL5 Q907
CS5
FB5
ON5
Voltage Regulator(IC908)
L88MS09T
to DE-54 board
VIN VOUT +9V
C910
STB
+5V
"POWER"
D907
+5V
+5V-2
C902
3-11