Brother HL-5590DN Service Manual

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Confidential
4.6.2 Nothing is displayed on the LED
4.6.3 Control panel is inoperable
<User Check>
- Turn the power switch OFF and then ON again.
Step Cause Remedy
1
Connection failure of the key PCB
flat cable
Reconnect the key PCB flat cable.
2
Panel PCB failure (Non touch panel
models only)
Replace the panel PCB ASSY.
3
Key PCB failure (Touch panel
models only)
Replace the LCD panel ASSY.
4 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Turn the power switch OFF and then ON again.
Step Cause Remedy
1
Rubber key attachment failure
(Non touch panel models only)
Reattach the rubber key.
2
Connection failure of the panel PCB
flat cable (Non touch panel models
only)
Reconnect the panel PCB flat cable.
3
Connection failure of the low-
voltage power supply harness
Reconnect the low-voltage power supply
harness.
4
Panel PCB failure (Non touch panel
models only)
Replace the panel PCB ASSY.
5
Touch panel failure
(Touch panel models only)
Replace the LCD panel ASSY.
6 Key PCB failure Replace the panel cover case upper.
7
Low-voltage power supply PCB
failure
Replace the low-voltage power supply PCB
ASSY.
8 Main PCB failure Replace the main PCB ASSY.

Brother HL-5590DN Specifications

General

Brand	Brother
Model	HL-5590DN
Category	Printer
Language	English