Circuit Voltage Chart - LG BD390 Service Manual

CIRCUIT VOLTAGE CHART

1. MAIN BOARD ICs (VOLT)
PIN IC402 IC609 IC603 IC610
STOP PLAY STOP PLAY STOP PLAY STOP
1 0.00 0.00 5.30 5.30 3.60 3.60 0.00
2 0.00 0.00 3.30 3.30 2.40 2.40 0.00
3 0.00 0.00 0.00 0.00 2.40 2.40 0.00
4 3.30 3.30 3.00 3.00 0.00 0.00 3.30
5 3.30 3.30 0.00 0.00 2.40 2.40 0.00
6 3.30 3.30 3.00 3.00 2.40 2.40 1.00
7 3.30 3.30 3.00 3.00 3.60 3.60 1.00
8 3.30 3.30 0.00 0.00 12.00 12.00 1.30
9 3.30 3.30 3.00 3.00
10 3.30 3.30 3.00 3.00
11 0.00 0.00 0.00 0.00
12 3.30 3.30 3.00 3.00
13 0.00 0.00 3.00 3.00
14 0.00 0.00 0.00 0.00
15 0.00 0.00 3.00 3.00
16 3.30 3.30 5.00 5.00
17 3.30 3.30 0.00 0.00
18 3.30 3.30 0.00 0.00
19 3.30 3.30 3.23 3.23
20 0.00 0.00 3.13 3.13
21 0.00 0.00 0.00 0.00
22 0.00 0.00 0.00 0.00
23 0.00 0.00 0.00 0.00
24 0.00 0.00 3.00 3.00
25 0.00 0.00 0.00 0.00
26 0.00 0.00 3.00 3.00
27 0.00 0.00 3.00 3.00
28 0.00 0.00 0.00 0.00
29 3.30 3.30 3.00 3.00
30 3.30 3.30 3.00 3.00
31 3.30 3.30 0.00 0.00
32 3.30 3.30 3.00 3.00
33 0.00 0.00 3.00 3.00
34 0.00 0.00 0.00 0.00
35 0.00 0.00 3.00 3.00
36 0.00 0.00 0.00 0.00
37 3.30 3.30 4.70 4.70
38 0.00 0.00 0.00 0.00
39 0.00 0.00
40 0.00 0.00
41 3.30 3.30
42 3.30 3.30
43 3.30 3.30
44 3.30 3.30
45 0.00 0.00
46 0.00 0.00
47 0.00 0.00
48 0.00 0.00
IC606 IC702 IC704 IC706
PLAY STOP PLAY STOP PLAY STOP PLAY STOP
0.00 0.00 0.00 5.30 5.30 6.78 6.78 1.27
0.00 0.00 0.00 5.20 5.20 5.30 5.30 5.90
0.00 0.00 0.00 5.00 5.00 1.86 1.86 5.00
3.30 3.30 3.30 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00 0.00 5.30 5.30 0.78
1.00 0.00 0.00 0.80 0.80 0.00
1.00 0.00 0.00 1.30 1.30 5.25
1.30 1.20 1.20 1.70 1.70 5.30
3-101
2. MAIN BOARD Capacitors
NO LOC SPEC PLAYBACK
PLAY (+) (-)
1.27 1 CA401 22uF/16V 3.29 0.00
5.90 2 CA404 22uF/16V 5.09 0.00
5.00 3 CA407 22uF/16V 2.54 0.00
0.00 4 CA702 22uF/16V 5.29 0.00
0.78 5 CA2E1 47uF/16V 1.81 0.00
0.00 6 CA2E2 47uF/16V 3.29 0.00
5.25 7 CA2E3 47uF/16V 1.23 0.00
5.30 8 CA2E4 47uF/16V 2.54 0.00
9 CA2E5 47uF/16V 1.23 0.00
10 CA2E6 47uF/16V 1.81 0.00
11 CA2E7 47uF/16V 3.29 0.00
12 CA410 100uF/6.3V 3.29 0.00
13 CA725 100uF/6.3V 1.81 0.00
14 CA415 100uF/16V 5.00 0.00
15 CA416 100uF/16V 12.00 0.00
16 CA417 100uF/16V 5.00 0.00
17 CA614 100uF/16V 12.05 0.00
18 CA624 100uF/16V 2.54 0.00
19 CA630 100uF/16V 12.05 0.00
20 CA631 100uF/16V 5.09 0.00
21 CA634 22uF/16V 3.60 0.00
22 CA635 22uF/16V 3.60 0.00
23 CA720 100uF/16V 5.28 0.00
24 CA726 100uF/16V 5.09 0.00
25 CA727 100uF/16V 5.27 0.00
26 CA628 470uF/6.3V 3.28 0.00
27 CA345 220uF/16V 1.81 0.00
28 CA346 220uF/16V 1.81 0.00
29 CA347 220uF/16V 1.81 0.00
30 CA348 220uF/16V 1.81 0.00
31 CA704 220uF/16V 5.32 0.00
32 CA705 220uF/16V 12.20 0.00
33 CA708 220uF/16V 5.32 0.00
34 CA709 220uF/16V 4.98 0.00
35 CA710 220uF/16V 3.30 0.00
36 CA714 220uF/16V 1.81 0.00
37 CA718 220uF/16V 12.20 0.00
38 CA723 220uF/16V 1.23 0.00
39 CA501 22uF/16V 3.30 0.00
3-102
3. 7.1CH BOARD Capacitors
NO LOC SPEC PLAYBACK
(+) (-)
1 CA825 10uF/16V 5.08 0.00
2 CA826 10uF/16V 5.08 0.00
3 CA827 10uF/16V 2.52 0.00
4 CA803 220uF/16V 5.49 0.00
5 CA804 220uF/16V 12.00 0.00
6 CA805 22uF/16V 5.53 0.00
7 CA806 22uF/16V 5.53 0.00
8 CA809 220uF/16V 5.5 0.00
9 CA810 220uF/16V 12.00 0.00
10 CA811 22uF/16V 5.53 0.00
11 CA812 22uF/16V 5.53 0.00
12 CA815 220uF/16V 5.53 0.00
13 CA816 220uF/16V 12.00 0.00
14 CA817 22uF/16V 5.53 0.00
15 CA818 22uF/16V 5.53 0.00
16 CA821 220uF/16V 5.47 0.00
17 CA822 220uF/16V 12.00 0.00
18 CA823 22uF/16V 5.53 0.00
19 CA824 22uF/16V 5.53 0.00
20 CA801 22UF/16V 5.50 2.50
21 CA802 22UF/16V 5.50 2.50
22 CA807 22UF/16V 5.50 2.50
23 CA808 22UF/16V 5.50 2.50
24 CA813 22UF/16V 5.50 2.50
25 CA814 22UF/16V 5.50 2.50
26 CA819 22UF/16V 5.50 2.50
27 CA820 22UF/16V 5.50 2.50
4. FRONT TIMER BOARD
Timer Reference Capacitors Play Mode
Board
+ -
C923 22uF/16V 5.27 0
C916 47uF/16V 4.88 0
C918 47uF16/V 5.27 0
IC901- uPD7BF0535GK Micom IC902 - PT6315 VFD Driver IC
Pin No. Desc. Voltage Pin No.
15 VDD 5.27 13, 43
47 AVREF 5.27 30
IC904 S-80842C 4.2V RESET IC
Desc. Voltage Pin
1 VDD 5.26 2
2 OUT 5.22
3 VSS 0
DIG901 HNS-06SC41
Desc. Voltage
FD+ -22.4
EE Mode
+ -
5.27 0
4.88 0
5.27 0
Desc. Voltage
VDD 5.26
-29VA -28.68
RC901 RCU Receiver
Desc. Voltage
VCC 4.87