Brother HL 5370DW, Service Manual

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3-16 Confidential
2.3 Error Cause and Remedy
■
BUFFER ERROR
Mistake the Interface settings.
■
CARTRIDGE ERROR
A new one cannot be detected for the operation failure of new toner actuator.
■
DIMM ERROR
The failed DIMM is installed, or the DIMM is not installed correctly.
■
DOWNLOAD FULL
Memory full.
Memo :
• The following troubleshooting sections contain both the actions which end users
should take or check and the ones which service technicians should perform.
Step Cause Remedy
1 Main PCB ASSY failure Replace the main PCB ASSY.
<User Check>
- Install the toner cartridges into the machine properly.
Step Cause Remedy
1
Power off or front cover opened
while detecting a new toner
cartridge. Reset the developing bias voltage and
develop roller counter. (Refer to
"Developer Roller Counter Reset" in 1.3
Service Mode in Chapter 7 .)
2
New toner actuator catching on
some position Re-assemble the new toner actuator.
3 New toner actuator failure Replace the new toner actuator.
4 Relay front PCB ASSY failure Replace the relay front PCB ASSY.
<User Check>
- Install the DIMM correctly.
Step Cause Remedy
1 Main PCB ASSY failure Replace the main PCB ASSY.
Step Cause Remedy
1 Main PCB ASSY failure Replace the main PCB ASSY.