Sony STR-KS2000 Service Manual - Page 49
IC901, STR-F6138-LF1352 US and Canadian models, STR-F6168-LF1352 AEP and UK models, IC2501,
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Page 49 highlights
- DCAC (2000) Board - IC2501 NJM2173AV (TE2) OUT1 1 DC CUT1 2 AMP1 AMP2 14 OUT2 13 DC CUT2 IN1 3 12 IN2 MIC V+1 4 11 MIC V+2 REG 5 GV 10 GV NOISE 6 REG 9 STBY GND 7 8 V+ STR-KS2000 - SMPS Board - IC901 STR-F6138-LF1352 (US and Canadian models) IC901 STR-F6168-LF1352 (AEP and UK models) CURRENT MIRROR OVER CURRENT PROTECT 2 OSC OVER CURRENT PROTECT 2 LOGIC BOTTOM SKIP LOGIC FEED INH INH BACK 2 1 DELAY DELAY LATCH OVER CURRENT PROTECT 1 OVER VOLTAGE PROTECT THERMAL SHUT DOWN OVER LOAD PROTECT SWITCHING REGULATOR BLOCK INTERNAL BIAS UNDER VOLTAGE LOCK OUT 1 2 3 4 5 OCP/INH S/GND DRAIN VCC FB/OCP 49
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STR-KS2000
49
OVER
CURRENT
PROTECT
2
LOGIC
OSC
INTERNAL BIAS
DELAY
DELAY
LATCH
CURRENT
MIRROR
OVER
CURRENT
PROTECT
2
OVER
CURRENT
PROTECT
1
FEED
BACK
INH
2
INH
1
BOTTOM
SKIP
LOGIC
OCP/INH
1
S/GND
2
DRAIN
3
VCC
4
FB/OCP
5
UNDER VOLTAGE
LOCK OUT
OVER LOAD
PROTECT
THERMAL
SHUT DOWN
OVER VOLTAGE
PROTECT
SWITCHING
REGULATOR
BLOCK
– SMPS Board –
IC901
STR-F6138-LF1352 (US and Canadian models)
IC901
STR-F6168-LF1352 (AEP and UK models)
– DCAC (2000) Board –
IC2501
NJM2173AV (TE2)
1
OUT1
2
DC CUT1
3
IN1
4
MIC V+1
5
REG
6
NOISE
7
GND
14
OUT2
13
DC CUT2
12
IN2
11
MIC V+2
10
GV
9
STBY
8
V+
REG
GV
AMP1
AMP2