LG MX8550 Service Manual page 123

MX8550
of CON201 of key PCB. Is there any pulse
of CON102 of FPCB. Is there any pulse or
of CON101 of FPCB. Is there any pulse or
LG Electronics Inc.
Checking Flow #3
Checking Flow #3
3
Check the voltage at pin 6,
or something?
NO
Check the voltage at pin 6,
something?
NO
Check the voltage at pin 28,
something?
NO
Check the voltage at pin 28
of CON600 of Main B/D. Is there any
pulse or something?
NO
Replace Main B/D
Replace U101 of key PCB
YES
Resolder CON201 of key
PCB
YES
Replace FPCB
YES
Resolder CON101 of FPCB
YES
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