Sharp LC-20AV7U, Руководство по обслуживанию

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7-1
A7144_45TS
TROUBLESHOOTING
Table of Contents for the Troubleshooting Flow Charts
No.
Chart
Flow
Description Page
1 The power cannot be turned on. 7-2
2 The fuse blows out. 7-2
3 When the output voltage fluctuates. 7-2
4 When buzz sound can be heard in the vicinity of power circuit. 7-2
5 +35V is not output. 7-2
6 VT+33V is not output. 7-3
7 INV+22V is not output. 7-3
8 DTV-ON+3.3V is not output. 7-3
9 DTV-ON+2.5V is not output. 7-3
12 PANEL+3.3V is not output.
7-3 10 DTV-ON+5V is not output.
7-4 11 AL+3.3V(D) is not output.
7-4
13 AL+1.2V(D) is not output. 7-4
14 AL+3.3V(A) is not output. 7-5
15 P-ON+5V(1) is not output. 7-5
16 +12V is not output. 7-5
17 P-ON+9V is not output. 7-5
18 DTV-ON+1.8V is not output. 7-6
19 PANEL-6V is not output. 7-6
20 The key operation is not functioning. 7-6
21 No operation is possible from the remote control unit. 7-7
22 Picture does not appear normally. (Tuner input (Analog) / Video input/S-Video input) 7-8
23 Picture does not appear normally. (Tuner input (Digital)) 7-8
24 Picture does not appear normally. (Y / Pb / Pr input) 7-8
25 Audio is not outputted normally. (Tuner input) 7-9
26 Audio is not outputted normally. (Tuner input (Digital)) 7-9
27 Audio is not outputted normally. (Audio input terminals) 7-10
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.