Control Panel Problems; Lcd Shows Nothing; Control Panel Inoperative - Brother DCPJ525W Service Manual

4.8

Control Panel Problems

4.8.1 LCD shows nothing

User Check
- Check if the power switch is OFF.
- Load the latest firmware.
Step
1 AC cord defective
2 LCD flat cable connection failure
3 Power supply harness connection
failure
4 LCD defective
5 Power supply PCB defective
6 Main PCB defective

4.8.2 Control panel inoperative

User Check
- Load the latest firmware.
Step
1 Rubber key(s) not set in place
2 Panel harness connection failure
3 Touch panel alignment off
4 Rubber key(s) defective
5 Panel PCB defective
6 Main PCB defective
Cause
Replace the AC cord. (Europe/Asia/Oceania only)
Check the connection and reconnect the flat cable.
Check the connection and reconnect the harness.
Replace the LCD unit.
Replace the power supply PCB ASSY.
Replace the main PCB ASSY.
Cause
Reposition the control panel ASSY.
Check the connection and reconnect the harness.
Adjust the touch panel with Function code 78. Refer
to
Replace the rubber key(s).
Replace the panel PCB ASSY.
Replace the main PCB ASSY.
2-86
Solution
Solution
Chapter 5, Section 1.4.30.
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