LG 566LM TROUBLE
566LM Service Manual
10. TROUBLE SHOOTING FLOW CHART
10.1. NO POWER
Start
5V
on
C101
Y
I101
is
Failed?
N
5V
on
C314,C319
Y
9.2V
on
C323
N
Y
N
I118,Q101,I107
N
Check
D804,D807,
I801,I802,I803
D801,F801
Replace
I101
Check
Check
D323,Q109,
L177,I119
Y
-6V
on
C315
Y
Check
D113,D114,D115,
I121,Q116,Q117,F101,F102
-27-
Check
D111,D112,
Q105,I120
5/20/2002
N
566LM Service Manual
10.2. MCU NO FUNCTION
5V
on
Pin44 of
I107
Y
Check
Pin 10 of
I107 is
Low level
Y
12MHz
Clock on Pin20
&21 of I107
Check
N
N
N
D804,D807,
I801,I802,I803
D801,F801
Check
C163,C162,
D110,R160
Check
X101
Y
Check I2C
Pin3,4 of I107
are high level
Check
Keypad and P104
-28-
N
Check Trace is
Opened or Shart
to I108 and I109
5/20/2002
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