Brother HL-4000CN - Page 239

V-29
Transfer Roll Cartridge Detached FIP
Remedy
Step Check
Yes No
1
Initial setting
Check the following for evidence of fault.
Transfer roll cartridge ASSY replacing
condition
ADC sensor ASSY replacing condition
Replace the parts
concerned
Go to step [2]
2
Checking harness ASSY CTD for
connection
Is the harness ASSY CTD connected to
the ADC sensor ASSY normally?
Go to step [3]
Replace the
parts
concerned
3
Checking harness ASSY CTD for
continuity
Is J136<=>J1361 continuous normally?
Go to step [4]
Replace
harness ASSY
CTD
4
Checking harness ASSY front 1A for
continuity
Is P1361<=>J13 continuous normally?
Go to step [5]
Replace
harness ASSY
front 1A
5
Checking harness ASSY front 1A for
signal
Is P/J136-5PIN<=>P/J136-3PIN 0VDC?
Replace ADC
sensor ASSY
Go to step [6]
6
Checking transfer roll cartridge ASSY
Check if an error occurs though the
transfer roll cartridge ASSY was replaced
with a new one.
Replace MCU and
HVPS PWB
End of work
Print Head Cartridge Detached FIP
Remedy
Step Check
Yes No
1
Initial setting
Check the following for evidence of fault.
Print head cartridge ASSY replacing
condition
PWBA CRUM in print head cartridge
ASSY replacing
condition
Replace the parts
concerned
Go to step [2]
2
Checking PWBA CRUM for connection
Is PWBA CRUM connector connected to
the harness connector normally?
Go to step [3]
Replace
harness ASSY
CRUM
3
Checking harness ASSY CRUM for
continuity
Is J170<=>J71 continuous normally?
Go to step [4]
Replace
harness ASSY
CRUM
4
Checking harness ASSY EEPROM for
continuity
Is P71<=>J140 continuous normally?
Go to step [5]
Replace
harness ASSY
EEPROM
5
Checking print head cartridge ASSY
Check if an error occurs though the print
head cartridge ASSY was replaced with a
new one.
Replace MCU and
HVPS PWB
End of work