Trouble Shooting - LG BS254 Service Manual

Delta Elec. Inc.
By checking operations during normal usage time, it is possible to carry out judgments on
malfunction to a certain extent. Carry out the following checks before disassembling the
equipment.
Connect the power cord
< Stand-by >
Yes
Power: Flashing Green
Light
Temp : OFF
Lamp :OFF
No
< Power supply error >
Power: OFF
Temp: OFF
Lamp: OFF
No
< Fan error >
Power: Flashing Green
Light6
Temp: OFF
Lamp: Flashing Red
Light（ （ （ （ 1， ， ， ， 2， ， ， ， 3） ） ） ）
Company Confidential
16
BS254 & BX254 & BX324

3. TROUBLE SHOOTING

Yes
• Power Supply Unit malfunction
• Check the connection of Power Supply (LVPS BD
• Check keypad connection ( MB
• Check voltage (12v, 5v, 3.3v, 2.5v,1.8v,1.2v,...etc) on Main Board.
Yes
• Check the system monitor & fan
• Connector (P8002，P8003) on Main Board disconnected.
LG ______________________
rev.05
CON3002 to MB P301)
P800 to Keypad P8100)
Delta____________
2011/04/07