Brother HL-L9300CDW Service Manual page 102

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Error code D800
Touchscreen initialization failed
Remove any material which is on the touchscreen.
Error occurred during touch panel initialization.
Error code D900
-
-
Communication between the panel PCB and main PCB is unavailable during touch panel
initialization.
Error code DA00
-
-
After the initialization of the panel PCB, no response was sent from the panel PCB for a period
of time.
Error code DB00
-
-
USB communication between the main PCB and panel PCB is unavailable.
Step
1 The version of the panel
firmware and the main firmware
do not match
2 Connection failure of the key
PCB flat cable
3 Key PCB flat cable failure
4 Panel control PCB failure
5 LCD unit failure
6 Key PCB failure
7 Main PCB failure
Cause
2-82
Remedy
Install the latest panel firmware and main
firmware.
Reconnect the key PCB flat cable.
Replace the key PCB flat cable.
Replace the panel control PCB ASSY.
Replace the LCD panel ASSY.
Replace the panel case ASSY.
Replace the main PCB ASSY.
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