Brother HL-4200CN, Service Manual

Page: 231 / 366

V-25
Remedy
Step Check
Yes No
8
Checking MCU HL-4200 for signal
Is P/J12-27PIN<=>P/12-17PIN of MCU
and HVPS PWBA HBN DRV 0VDC?
Replace MCU
HL-4200
Go to step [9]
9
Checking harness ASSY DRV2-2 for
continuity
Is J12<=>J42 continuous normally?
Replace MCU
HL-4200
Replace
harness ASSY
DRV2-2
Magenta Toner Cartridge Detached FIP
Remedy
Step Check
Yes No
1
Initial setting
Check the following for evidence of fault.
Cartridge replacing condition
Toner cartridge switch ASSY (M)
replacing
condition
Toner cartridge switch ASSY (M) actuator
replacing condition
Toner cartridge switch ASSY (M)
connector replacing condition
Replace the parts
concerned
With tool
Go to step [2]
Without tool
Go to step [3]
2
Checking toner cartridge switch ASSY
Does toner cartridge switch ASSY function
normally?
Using diagnostic tool, check by digital
input test.
Replace MCU
HL-4200
Go to step [3]
3
Checking PWBA HBN DRV for signal
Is P/J51-13PIN<=>P/J51-14PIN 0VDC?
Go to step [7]
Go to step [4]
4
Checking toner cartridge switch ASSY (M)
for signal
Is P/J432-2PIN<=>P/J432-1PIN 0VDC?
Go to step [6] Go to step [5]
5
Checking toner cartridge switch ASSY (M)
for continuity
Is P432-2PIN<=>P432-1PIN of toner
cartridge switch ASSY(M) continuous
normally?
Go to step [6]
Replace toner
cartridge
switch
ASSY (M)
6
Checking harness ASSY TNR4 for
continuity
Is J51<=>J432 continuous normally?
Go to step [7]
Replace
harness ASSY
TNR4
7
Checking PWBA HBN DRV for signal
Is P/J42-5PIN<=>P/J42-14PIN 0VDC?
Go to step [8]
Replace PWBA
HBN DRV
8
Checking MCU HL-4200 for signal
Is P/J11-26PIN<=>P/11-17PIN of MCU
and HVPS PWBA HBN DRV 0VDC?
Replace MCU
HL-4200
Go to step [9]
9
Checking harness ASSY DRV2-2 for
continuity
Is J12<=>J42 continuous normally?
Replace MCU
HL-4200
Replace
harness ASSY
DRV2-2