Brother HL-4200CN, Service Manual

Page: 222 / 366

V-16
010-317 Fuser Detached FIP
Remedy
Step Check
Yes No
1
Initial setting
Check the following for evidence of fault.
Fuser ASSY replacing condition
Replace the parts
concerned
Go to step [2]
2
Checking fuser ASSY
Remove the fuser and measure
resistance
value
Is P232-A4PIN<=>P232-A5PIN less than
400K�?
Go to step [3]
Replace fuser
ASSY
3
Checking harness ASSY FSR3 for
continuity
Is J232<=>J138 continuous normally?
Go to step [4]
Replace
harness ASSY
FSR3
4
Checking harness ASSY front 1A for
continuity
Is P138<=>J13 continuous normally?
Replace MCU
HL-4200
Replace
harness ASSY
front 1A
010-350 Fuser Failure FIP
Remedy
Step Check
Yes No
1
Initial setting
Check the following for evidence of fault.
Fuser ASSY replacing condition
<Warning>
Do not power On and Off while FUSER
ASSY is removed.
It will be in danger of getting a shock.
Replace the parts
concerned
Go to step [2]
2
Checking fuser ASSY connector
Disconnect the fuser ASSY connector,
and check for broken or curved pins.
Go to step [3]
Replace
the parts
concerned
3
Checking fuser ASSY
Check if an error occurs though the
fuser ASSY was replaced with a new one.
Replace MCU
HL-4200
End of work
010-354 Environment Sensor Error FIP
Remedy
Step Check
Yes No
1
Initial setting
Check the following for evidence of fault.
HUM TEMP sensor replacing condition
Replace the parts
concerned
Go to step [2]
2
Checking harness ASSY TMPA for signal
Is P/J2361-1PIN<=>P/J2361-2PIN +3VDC
or less than +0.1VDC?
Go to step [4] Go to step [3]
3
Checking harness ASSY TMPA for signal
Is P/J2361-3PIN<=>P/J2361-2PIN more
than +2.5VDC?
Go to step [4]
Replace MCU
HL-4200
4
Checking harness ASSY TMPA for signal
Is P/J2361-4PIN<=>P/J2361-2PIN
+5VDC?
Replace sensor
HUM TEMP
Replace MCU
HL-4200