Brother HL-4200CN Service Manual page 227

Feed JAM FIP
Step
Initial setting
Check the following for evidence of fault.
Paper cassette replacing condition
Paper condition in cassette
Wear or damage of rolls and gears in
1
feeder
Paper dust or foreign substances in paper
path
REGI sensor replacing condition
Main drive ASSY replacing condition
Checking REGI sensor
Does REGI sensor function normally?
2
Using diagnostic tool, check by digital
input test.
Checking REGI clutch harness for
connection
3
Is it connected normally to the REGI
SENSOR?
Checking REGI clutch harness for
4 continuity
Is J181<=>J18 continuous normally?
Checking MCU HL-4200 for signal
5
Is P/J18-3<=>P/J18-2 0VDC?
Checking main drive motor for operation
Does the main drive motor run when
6
printing 1 sheet?
Checking main drive motor
Does main drive motor function normally?
7 Using diagnostic tool, check by digital
output test.
In the test, close the interlock SW.
Checking PWBA HBN DRV for signal
8
Is P/J48-1PIN<=>P/J60-2PIN +24VDC?
Checking interlock SW
9 Is the interlock SW pressed normally?
Checking interlock SW for signal
Check the following if +24VDC is present.
10
SW-1PIN<=>P/J60-2PIN
SW-2PIN<=>P/J60-2PIN
Checking drive PWBA HBN DRV for
11 power supply
Is P/J60-1PIN<=>P/J60-2PIN +24VDC?
Checking PWBA HBN DRV for power
12 supply
Is P/J61-8PIN<=>P/J61-7PIN +5VDC?
Checking PWBA HBN DRV for power
13 supply
Is P/J61-6PIN<=>P/J61-5PIN +3.3VDC?
Checking harness ASSY LVNC3 for
14 continuity
Is J61<=>J165 continuous normally?
Check
V-21
Remedy
Yes
Replace the parts Go to step [2]
concerned
Go to step [3]
Go to step [6] Go to step [3]
Replace the
parts
Go to step [4]
concerned
Replace chute
Go to step [5]
REGI
Replace REGI
Go to step [6]
sensor
Tray go to step
[16] Go to step [7]
MSI go to step
[28] Go to step [8]
Replace MCU
Go to step [8]
HL-4200
Go to step [12] Go to step [9]
Replace the
Go to step [10] parts
concerned
Replace deive
Go to step [11]
PWBA HBN DRV
Replace PWBA
Go to FIP-DC
HBN DRV
Go to step [13] Go to step [14]
Go to step [15] Go to step [14]
Replace
Go to FIP-DC harness ASSY
LVNC3
No
With tool
Without tool
With tool
Without tool