Troubleshooting For Control Panel Problems; Nothing Is Displayed On The Lcd; Power Key Is Inoperable; Touch Panel Is Inoperable - Brother Ads-1500W Service Manual

4.5

Troubleshooting for Control Panel Problems

4.5.1 Nothing is displayed on the LCD

<User Check>
• Check that the AC adapter is connected correctly.
Step
Connection failure of the panel
1
PCB flat cable
Connection failure of the panel
2
relay PCB flat cable
Connection failure of the LCD flat
3
cable
4 AC adapter failure
5 Panel PCB failure
6 Main PCB failure

4.5.2 Power key is inoperable

Step
Connection failure of the panel
1
PCB flat cable
2 Panel PCB failure
3 Main PCB failure

4.5.3 Touch panel is inoperable

Step
Connection failure of the panel
1
relay PCB flat cable
Connection failure of the touch
2
panel sensor FPC
3 Panel PCB failure
4 Main PCB failure
Cause
Reconnect the panel PCB flat cable.
Reconnect the panel relay PCB flat cable.
Reconnect the LCD flat cable.
Replace the AC adapter.
Replace the panel unit.
Replace the main PCB ASSY.
Cause
Reconnect the panel PCB flat cable.
Replace the panel unit.
Replace the main PCB ASSY.
Cause
Reconnect the panel relay PCB flat cable.
Reconnect the touch panel sensor FPC.
Replace the panel unit.
Replace the main PCB ASSY.
2-20
Remedy
Remedy
Remedy
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