Brother HL-4200CN Service Manual page 239

Transfer Roll Cartridge Life Over FIP
Step
Initial setting
Check the following for evidence of fault.
1 Transfer roll cartridge ASSY replacing
condition
Sensor TNR full replacing condition
Checking sensor TNR full
Does sensor TNR full function
2 normally?
Sensor TNR full using diagnostic tool,
check by Digital Input Test.
Checking harness ASSY TFLSNS for
signal
3
Remove the transfer roll cartridge ASSY
Is P/J141-2PIN<=>P/J141-1PIN 0VDC?
Checking harness ASSY TFLSNS for
4 signal
Is P/J141-3PIN<=>P/J141-1PIN +5VDC?
Checking harness ASSY TFLSNS for
5 continuity
Is J142<=>J142 continuous normally?
Checking transfer roll cartridge ASSY
6 Replace new transfer roll cartridge ASSY,
and check if an error occurs.
Print Head Cartridge Life Over FIP
Step
Initial setting
Check the following for evidence of fault.
Print head cartridge ASSY replacing
1 condition
PWBA HBN DRVA CRUM in print head
cartridge
ASSY replacing condition
Checking PWBA HBN DRVA CRUM for
connection
2 Is PWBA HBN DRVA CRUM connector
connected to
the harness connector normally?
Checking harness ASSY CRUM for
3 continuity
Is J170<=>J71 continuous normally?
Checking harness ASSY EEPROM for
4 continuity
Is P71<=>J140 continuous normally?
Checking print head cartridge ASSY
5 Replace new print head cartridge ASSY,
and check if an error occurs.
Check
Check
V-33
Remedy
Yes
Replace the parts Go to step [2]
concerned
Go to step [3]
Go to step [6] Go to step [3]
Go to step [6] Go to step [4]
Replace
Go to step [5] harness ASSY
EEPROM
Replace
Replace sensor
harness ASSY
TNR full
TFLSNS
Replace MCU
End of work
HL-4200
Remedy
Yes
Replace the parts
Go to step [2]
concerned
Replace
Go to step [3] harness ASSY
CRUM
Replace
Go to step [4] harness ASSY
CRUM
Replace
Go to step [5] harness ASSY
EEPROM
Replace MCU
HL-4200
No
With tool
Without tool
No
End of work