Lamp Malfunction; The Touch Panel Does Not Work (Touch Panel Model Only) - Brother DCP-9055CDN Service Manual

3.11.3 Lamp malfunction

Step
1
2
3
4
5
6

3.11.4 The touch panel does not work (Touch panel model only)

Step
1
2
3
4
Cause
Key sticking
Connection between main
PCB and panel PCB
Fine adjustment of touch
panel misalignment (for
models with a touch panel)
Rubber key failure
Panel PCB failure
Main PCB failure
Cause
Fine adjustment of touch
panel misalignment (for
models with a touch panel)
Harness connection failure of
touch panel
Touch panel failure
Main PCB failure
Re-assemble the panel unit.
Connect the connector between the main
PCB ASSY and panel PCB ASSY correctly.
Perform the fine adjustment of touch panel.
(Function code
Replace the rubber key.
Replace the panel PCB ASSY.
Replace the main PCB ASSY.
Perform the fine adjustment of touch panel.
(Function code
Check the harness connection of the
touch panel and reconnect it.
Replace the LCD unit.
Replace the main PCB ASSY.
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Remedy
61)
Remedy
61)
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