LG LS-J0960NL Service Manual ▷ View online
-54-
• Confirm that the vertical louver is normally geared with the shaft of Stepping Motor.
• If the regular torque is detected when rotating the vertical louver with hands
• If the regular torque is detected when rotating the vertical louver with hands
⇒
Normal
• Check the connecting condition of CN-UP Connector
• Check the soldering condition(on PCB) of CN-UP Connector
• Check the soldering condition(on PCB) of CN-UP Connector
Check the operating circuit of the vertical louver
• Confirm that there is DC +12V between pin
➀
of CN-UP and GND.
• Confirm that there is a soldering short at following terminals.
- Between
➀
,
➁
,
➂
and
➃
of MICOM
- Between
➀
,
➁
and
➂
of IC4
- Between
14
,
15
and
16
of IC4
When the vertical louver does not operate.
Trouble 5
If there are no problems after above checks.
• Confirm the assembly condition that are catching and interfering parts in the rotation
radial of the vertical louver
-55-
Does the Operating LED of indoor unit blink
when Operation's ON?
when Operation's ON?
Is the Connection between indoor power
relay Pin
relay Pin
➂
and terminal block No. 1 right?
Refer to the self-diagnosis function.
The Outdoor Unit does not operate at all.
Trouble 6
YES
Check the connecting state of connector
NO
NO
Is the connection of cable between indoor
and outdoor unit right?
and outdoor unit right?
Indoor
Outdoor
1(Brown)
1(Brown)
2(Blue)
2(Blue)
3(Green/YL)
3(Green/YL)
4(Red)
4(Red)
NO
YES
Is the voltage of CN-POWER
➀
,
➁
in
outdoor PCB Ass'y about AC220V / 240V
when Operation's ON?
when Operation's ON?
Check the Fuse of Outdoor PCB Ass'y.
NO
YES
Is the voltage of CN-AC
➀
,
➂
in outdoor
PCB Ass'y about AC220V / 240V?
Check the PTC and RY-PWR.
NO
YES
Is the Bridge Diode(DB01Z) right?
Replace the Bridge Diode.
NO
YES
Replace the PCB Ass'y.
NO
-61-
Electronic Control Device
(1) MAIN PCB ASS'Y(INDOOR)
PCB ASS'Y SVC PART LIST
OPTION
PART NO
PART NAME
SPEC
MAKER
LOCATION
0ITO874000C
IC, TOSHIBA
TMP87PH40AN
TOSHIBA
MICOM
0ISG934660A
IC, SGS-TOMSON
ST93C46CB6
SGS, TOMSON
IC3
6908AQ9190E
BUZZER, PIEZO, CERAMIC
PKM22EPP-4001
MURATA
BZ2
0ITO627000C
IC, TOSHIBA
TLP627
TOSHIBA
IC1
0ITO621000C
IC, TOSHIBA
TLP621
TOSHIBA
IC2
5230AQ9073U
FILTER, NOISE
HPI-PIO
DONG IL
NF
6170A20001A
TRANSFORMER, POWER
AC167~278V/50Hz
DONG NAM
PT
6900AQ9028D
FUSE
250V/T3.15A
SEWON/SAMJU
FUSE
6102A90001A
VARISTOR
SVC 561D-14A
SAMHWA
ZNR2, 3
6920AQ9017A
RELAY
G4A-1A-P
OMRON
RY-PWR
MODEL NAME
LS-J0960NL/NT
LS-F1260NL/NT
R10H
R11H
R12H
R13H
R14H
39K
2K
OPEN
OPEN
OPEN
27K
2K
OPEN
OPEN
OPEN
(2) MAIN PCB ASS'Y(OUTDOOR)
-62-
PCB ASS'Y SVC PART LIST
OPTION
PART NO
PART NAME
SPEC
MAKER
LOCATION
0ITO884900C
IC, TOSHIBA
TMP88PS49N
TOSHIBA
MICOM
6200A90001C
FILTER, NOISE
18mH
SANGSHIN
NFO1J
6171AQ3487A
TRANSFORMER ASS'Y
CT
DONGNAM
CT
6171A20002A
TRANSFORMER, SMPS
EER2828
SUNGMOON
SMPS
0CE4771V610
CAPACITOR, ELET
470µF/450V(HC)
SAMHWA
COIC, CO2C
0TR430400AA
TRANSISTOR
2SC4304
SANKEN
Q01C
0ITO627000C
IC, TOSHIBA
TLP627
TOSHIBA
IC01K
0ITO621000A
IC, TOSHIBA
TLP621
TOSHIBA
IC02K
MODEL NAME
NF02J
LS-J0960NL/NT
6.5mH
LS-F1260NL/NT
58µH
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