Service manual

87109654321
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42
LC-20B8U-S
LC-20B9U-S
LC-20B9U-SM
BLOCK DIAGRAM
V2-IN
V2-OUT
L, R
5V
Y
V2-OUT
5V
I2C
I2C
SIF
TUNER
TU3401
I2C
TV-V
SUB UNIT
3.3V
9V
8V
5V
-12V
31V
9V
5V
8V
SP
5V
L, R-OUT
PC-L,PC-R
V1, SY,SC, L1, R1, S-SW
DL1, DR1
Y1, PB1, PR1
COMPONENT
SELECT
IC3403
Y2, PB2, PR2
DL2, DR2
INPUT 2
J3405
J3410
INPUT1
J3405
J3410
INPUT3
J3401
J3403
PC-AUDIO-IN
J3409
INPUT4
/OUTPUT
J3403
L2/R2-IN/OUT
AV2
IN/OUT
SWITCH
IC3404
Q3413
Q3410
Q3414
L2, R2-IN
AV
SELECT
IC3401
KEY1, KEY2, POW1, POW2(IC2001)
POWER SWITCH
S4202
CONTROL SWITCH
SW4202-4207
DC/DC
T7001
IC7301
Q7001
POW(IC2001)
AC IN
120~240V
CN7701
AC_CTRL(IC2001)
AC/DC
T7701
IC7701
IC7702
IC7703
IC7704
Q7701
Q7751
INVERTER
VCC
SOUND
VCC
3.3V
DC/DC
IC7002
Q7005
17V
DC/DC
IC7001
Q7006
IC7004
D7012
17V
35V
SP-L/R
SOUND.VCC
AUDIO
AMPLIFIER
IC3206
HEAD
PHONE
AMPLIFIER
IC3305
HP-L/R
(LED UNIT)
AUDIO DECODER
IC3201
3.3
12V
REG.
IC2003
I2C
PC-RGB IN
SC401
EDID
E2PROM
IC401
RE
G
IC8
0
PC-R,G,B,H,V
Y, PB, PR
A-D
CONVERT
E
IC8701
IN
V
31V
POWER UNIT