Sony SA-WSF200 Service Manual page 29

IC706 TC74VHC157FT (EKJ) (SA-WSF500)
SELECT 11 1 16
V
S
1A 2 15
1A G STROBE
INPUT
3 14 4A
1B 1B 4A
4B
1Y 4 1Y 4B 13
OUTPUT
5
2A 2A 4Y 11 12 4Y
INPUT
3A
6 11
2B 2B 3A
2Y 7 2Y 3B 10 3B
OUTPUT
3Y
GND 8 9 3Y
IC820 74LVC1G79GW-125
1
D
C
TG
CP 2
_
C
GND
3
– POWER Board (SA-WSF200/WSF500) –
IC901 STR-F6138-LF1352 (SA-WSF500: Canadian, Mexican and Taiwan models)
IC901 STR-F6168-LF1352 (Except SA-WSF500: Canadian, Mexican and Taiwan models)
CURRENT
MIRROR
OVER
CURRENT
PROTECT
2
LOGIC
OVER
FEED
CURRENT
BACK
PROTECT
2
1
SA-WSF200/WSF500/SS-CTF500/F500/TSF200/TSF500
CC
INPUT
OUTPUT
INPUT
OUTPUT
C
TG
C
C
_
TG
C
TG
_
C
_
C
C
_
C
OSC
DELAY
DELAY
BOTTOM
SKIP
LOGIC
OVER
INH INH
CURRENT
2 1
PROTECT
1
SWITCHING
REGULATOR
BLOCK
2 3
IC801, 802 SI-3010KM-TLS
VC 1
VIN 2
GND 3
REF
VOUT 4
ADJ 5
VCC
5
4 Q
LATCH
THERMAL
OVER VOLTAGE OVER LOAD
SHUT DOWN
PROTECT PROTECT
INTERNAL BIAS
UNDER VOLTAGE
LOCK OUT
4
TSD
–
+
5
Ver. 1.1
29