LG RN7 - Page 45

No LED
Is Vcc (DVCC_5V)
supplied to IC206?
Check or replace IC203 block.
YES
YES
NO
Is SPLED_5V is normal?
Check or replace IC206.
YES
NO
Check or replace LED harness cable.
No VFD
YES
VFD_12V is normal?
VCC_5V is normal?
VFD_CLK, STB, DO is normal?
Check or replace Q202, Q205.
Check or replace L105, L211.
Check or replace RT810, RT811, RT812.
YES
YES
YES
NO
NO
NO
Check or replace VFD.
POWER
3-18
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