Troubleshooting - Toshiba 15VL56B Service Manual

4. TROUBLESHOOTING

Process A
No power
Ref.1/1-1
Check 15V or ST_ 5V
of Power B/D
Pass
Check Output of
IC1004, IC1005(Main B/D)
Pass
Check LED Assy
Pass
Check P101 Connector
Ref.1 15V : P1100, #1, 2
Check short circuits of Main B/D
or Change Power B/D
Fail
Check IC 1004, IC1005
PIN 7 LEVEL(High 3.3V)
Fail
Change IC1004 , IC1005
or check short circuits of Main B/D
Change LED Assy
Fail
Ref.1-1 ST_5V : P1100, #6, 7
- 34 -
Change VCTi(IC200)
Of Main B/D
Fail