LG APNH2433LAD, Руководство по обслуживанию

Страница: 68 / 92

- 67 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. Trouble Shooting
• 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
⇒
Normal
• Check the connecting condition of CN-U/D or CN0L/R Connector
• Check the soldering condition(on PCB) of CN-U/D or CN0L/R Connector
Check the operating circuit of the vertical louver
• Confirm that there is DC +12V between pin
➀
of CN-U/D, CN0L/R and GND.
• Confirm that there is a soldering short at following terminals.
- Between
1
,
2
,
3
and
4
of MICOM - Between
17
,
18
,
19
and
20
of MICOM
- Between
4
,
5
,
6
and
7
of IC01M - Between
5
,
6
,
7
and
8
of IC01M
6.5 When the louver does not operate.
If there are no problems after above checks.
• Confirm the assembly condition that are catching and interfering parts in the link of the
vertical louver
Be sure to disconnect the power cable plug from the plug socket before disassembling the
equipment for a repair. Internal components and circuit boards are at main potential when the
equipment is connected to the power cables. This voltage is extremely dangerous and may
cause death or severe injury if come in contact with it.
Be sure to turn off power switch before connect or disconnect connector, or parts damage may
be occurred.