LG LM-U360 Service Manual page 11

YES
IC100 © IC301 DATA
Communication check
PIN PIN
(ST8)75 PIN © 3PIN(STB)
(DO) 76 PIN © 2PIN(DO)
(DI) 77 PIN © 4PIN(DI)
(CLK)78 PIN © 1PIN(CLK)
YES
FLT light on
YES
normal
NO
If 5V defective D321 SR35
input and output power check
YES
relevant parts check
YES
IC100
(STB)75 PIN © (STB)
NO
(DO) 77 PIN © 4PIN(DO)
(CLK) 78 PIN © 1PIN(CLK)
Data output check
YES
76 PIN © DATA input check
YES
relevant parts check
YES
NO
normal
NO
normal
- 2-4 -
relevant parts
replacement
relevant parts
replacement