Lamps On The Control Panel Do Not Light; Touch Panel Inoperative (For Models With Touch Panel); Display Defect On The Lcd - Brother DCPJ525W Service Manual

4.8.3 Lamps on the control panel do not light

Step
1 Rubber key(s) not set in place
2 Panel harness connection failure
3 Rubber key(s) defective
4 Panel PCB defective
5 Main PCB defective

4.8.4 Touch panel inoperative (For models with touch panel)

Step
1 Touch panel alignment off
(For models with touch panel)
2 Touch panel harness connection
failure
3 Touch panel defective
4 Main PCB defective
4.8.5

Display defect on the LCD

Step
1 LCD flat cable connection failure
2 LCD defective
3 Main PCB defective
Cause
Reposition the control panel ASSY.
Check the connection and reconnect the harness.
Replace the rubber key(s).
Replace the panel PCB ASSY.
Replace the main PCB ASSY.
Cause
Adjust the touch panel with Function code 78. Refer
to
Check the connection and reconnect the harness.
Replace the LCD unit.
Replace the main PCB ASSY.
Cause
Check the connection and reconnect the harness.
Replace the LCD unit.
Replace the main PCB ASSY.
2-87
Solution
Solution
Chapter 5, Section 1.4.30.
Solution
Confidential