Sharp LC-26SB14U Service Manual - Page 18
Troubleshooting Guide
 |
View all Sharp LC-26SB14U manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 18 highlights
(LCD SECTION) POWER DOES NOT TURN ON TROUBLESHOOTING GUIDE Yes Is F401 broken? No No Is there voltage at pin 1 of IC402 6V? Yes Yes Is R412 broken? No Is there voltage at pin No 10 of IC401 19V? Yes Change DIGITAL PCB. Change F401. Check IC402 and peripheral circuit. Change R412. Check IC401 and peripheral circuit. E-1
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13 -
14 -
15 -
16 -
17 -
18 -
19 -
20 -
21 -
22 -
23 -
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
 |
 |
TROUBLESHOOTING GUIDE
(LCD SECTION)
POWER DOES NOT TURN ON
Is F401 broken?
Is there voltage at pin
1 of IC402 6V?
Is R412 broken?
Is there voltage at pin
10 of IC401 19V?
Change F401.
Check IC402 and peripheral
circuit.
Change DIGITAL PCB.
No
Yes
Change R412.
Check IC401 and peripheral
circuit.
No
No
No
Yes
Yes
Yes
E-1