Circuit Voltage Chart - LG BD550 Service Manual

CIRCUIT VOLTAGE CHART

1. MAIN BOARD - ICs
VOLTAGE
PIN NO. DESCRIPTION
PLAY MODE
IC201(MP2377)
1 Vout 1.22
8 Vin 12.47
IC202(MP8706)
1 Vin 12.47
3 Vout 1.51
IC203(LM39102D)
2 Vin 4.45
3 Vout 3.33
IC205(LM29152)
2 Vin 5.35
4 Vout 5
IC206(LM29152)
2 Vin 13.43
4 Vout 12.12
IC207(LM39102D)
1 Vin 5.35
2 Vout 4.98
IC803(CS4353) DAC+AMP
3 VL 3.329V
6 VCP 3.329V
18 VA 3.329V
20 V_2VRMS 3.329V
IC805 Video Amp
5 VCC
20 CVBS Out
2. MAIN BOARD - Capacitors
LOCA.
CAPACITY
NO PLAY MODE
NO.
CA201 100uF/16V
1.22
CA202 100uF/16V
12.35
CA203
100uF/16V
CA239 100uF/16V
12.36
CA514 100uF/16V
1.51
CA602 100uF/16V
CA805 100uF/16V
4.47
3.33
5.36
5.01
13.32
12.13
5.36
4.99
3.337V
3.337V
3.337V
3.337V
5.07
1.64
3-119
PLAY MODE NO PLAY MODE
POSITIVE NEGATIVE POSITIVE NEGATIVE
4.98 0 4.98 0
3.33 0 3.33 0
5 0 5.01 0
12.12 0 12.12 0
1.21 0 1.21 0
1.51 0 1.51 0
3.3 0 3.3 0
3-120
3. FRONT BOARD
PIN NO. DESCRIPTION
DIG1101(HNS-05SS64T)
FD+ -
FD- -
IC1100(PT6315) VFD Driver IC
13, 43 VDD
30 VKK
Q1101(KTC4375)
Emitter -
Base -
Collector -
Q1105(KRC103S)
Emitter -
Base -
Collector -
Q1103(KRA103S)
Emitter -
Base -
Collector -
RC1100 RCU Receiver
2 VCC
VOLTAGE
-18.9
-20.6
4.99
-23.01
-18.9
-18.01
-16.9
-16.86
4.93
-16.89
4.96
0
4.93
5.01