LG LP-E5082ZA Service Manual ▷ View online
– 59 –
9.6 Electronic Parts Troubleshooting Guide
1) No cooling operation performed.
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
Is the AC220V
(AC 240 V) between Connector(CN-
outunit) Pin 1 and Pin 3 of
Main P.C.B
ON/OFF S/W ON
Is the unit operating?
Is the input power
AC220V (AC240V) at COMP
Magnetic coil?
Check the magnetic
contactor of outdoor unit.
contactor of outdoor unit.
Is it Cooling mode?
Room temp, > Set temp?
Is the DC5V at 14
pin of MICOM
Replacement IC02M, RY-COMP
Replacement MICOM
Room temp, >set temp
setting
setting
Select the cooling
operation mode.
operation mode.
Check the wiring
diagram.
diagram.
– 66 –
10. ELECTRONIC CONTROL DEVICE
10.1 MAIN P.C.B ASM
– 67 –
10.2 DISPLAY P.C.B ASM
CN-2
CN-1
C2
C1
G
PRE AMP
O
V
3
J1
J3
J4
J7 J8
J9
J2
A/CL
PWB: 6870AQ2228A
ASM: 6871AQ3142
ASM: 6871AQ3142
LED MODULE
ON/OFF
J5 J6
C4
D3
D1
D2
D4
D6 D5
MODE
LOW
HIGH
SPEED
R1
C3
D7
10.3 DE-ICE PCB
– 68 –
11.1 Circuit and Troubleshooting
11. SCHEMATIC DIAGRAM
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