Brother HL-4200CN Service Manual page 230

Media Type Mismatch FIP
Step
Initial setting
Check the following for evidence of fault.
1
OHP sensor replacing condition
Chute ASSY REGI replacing condition
Checking OHP sensor
Does OHP sensor function normally?
2
Using diagnostic tool, check by digital
input test.
Checking MCU HL-4200 for
3 signal
Is P/J32-2PIN<=>P/J32-1PIN 0VDC?
Checking MCU HL-4200 for
signal
4 Make the paper approach to the sensor.
Does P/J32-2PIN<=>P/J32-1PIN change
from 0VDC to +3.3VDC?
Checking MCU HL-4200 for
5 signal
Is P/J32-3PIN<=>P/J32-1PIN +5VDC?
Yellow Toner Cartridge Detached FIP
Step
Initial setting
Check the following for evidence of fault.
Cartridge replacing condition
Toner cartridge switch ASSY (Y) replacing
1 condition
Toner cartridge switch ASSY (Y) actuator
Replacing condition
Toner cartridge switch ASSY (Y)
connector replacing condition
Checking toner cartridge switch ASSY
Does toner cartridge switch ASSY function
2 normally?
Using diagnostic tool, check by digital
input test.
Checking PWBA HBN DRV for signal
3
Is P/J51-11PIN<=>P/J51-12PIN 0VDC?
Checking toner cartridge switch ASSY (Y)
4 for signal
Is P/J431-2PIN<=>P/J431-1PIN 0VDC?
Checking toner cartridge switch ASSY (Y)
for continuity
5 Is P431-2PIN<=>P431-1PIN of toner
Cartridge switch ASSY (Y) continuous
normally?
Checking harness ASSY TNR4 for
6 continuity
Is J51<=>J431 continuous normally?
Checking PWBA HBN DRV for signal
7
Is P/J42-4PIN<=>P/J42-14PIN 0VDC?
Check
Check
V-24
Remedy
Yes
Replace the parts Go to step [2]
concerned
Go to step [3]
Replace MCU
Go to step [3]
HL-4200
Go to step [5]
Go to step [4]
Replace MCU
Go to step [5]
HL-4200
Replace OHP Replace MCU
sensor HL-4200
Remedy
Yes
Replace the parts Go to step [2]
concerned
Go to step [3]
Replace MCU
Go to step [3]
HL-4200
Go to step [4]
Go to step [7]
Go to step [6] Go to step [5]
Replace toner
cartridge
Go to step [6]
switch ASSY
(Y)
Replace
Go to step [7] harness ASSY
TNR4
Replace PWBA
Go to step [8]
HBN DRV
No
With tool
Without tool
No
With tool
Without tool