Troubleshooting For Control Panel Problems; Nothing Is Displayed On The Lcd; Control Panel Is Inoperable - Brother PDS-5000 Service Manual

4.5 Troubleshooting for Control Panel Problems

4.5.1 Nothing is displayed on the LCD

<User Check>
- Turn the power switch OFF and then ON again.
- Check the DC terminal connection.
Step
Key attachment failure
1
Connection failure of the LCD PCB
2
flat cable
Connection failure of the LCD flat
3
cable
AC cord failure
4
AC adapter failure
5
LCD PCB failure
6
Main PCB failure
7

4.5.2 Control panel is inoperable

<User Check>
- Turn the power switch OFF and then ON again.
Step
Key attachment failure
1
Connection failure of the LCD PCB
2
flat cable
LCD PCB failure
3
Main PCB failure
4
Cause
Reattach the key.
Reconnect the LCD PCB flat cable.
Reconnect the LCD flat cable.
Replace the AC cord.
Replace the AC adapter.
Replace the LCD PCB ASSY.
Replace the main PCB ASSY.
Cause
Reattach the key.
Reconnect the LCD PCB flat cable.
Replace the LCD PCB ASSY.
Replace the main PCB ASSY.
2-23
Remedy
Remedy
Confidential