Service manual

V-23
Remedy
Step Check
Yes No
27
Checking harness ASSY DRV2-2 for
continuity
Is J12-10PIN<=>J42-21PIN continuous
normally?
Replace MCU
HL-4200
Replace
harness ASSY
DRV2-2
28
Checking clutch ASSY turn MSI for
operation
Does the turn roll in the MSI run when
printing 1 sheet?
Go to step [31]
With tool
Go to step [29]
Without tool
Go to step [30]
29
Checking clutch ASSY turn MSI
Does clutch ASSY turn MSI function
normally?
Using clutch ASSY turn MSI diagnostic
tool,
check by digital output test
In the test, close the interlock SW.
Check the clutch
for slip, or the
gear for damage
.
Go to step [30]
30
Checking clutch ASSY MSI turn for
resistance value
Remove the clutch connector J19.
Is J19-1PIN<=>J19-2PIN less than 200�?
Replace MCU
HL-4200
Replace clutch
ASSY turn MSI
31
Checking solenoid feed MSI for operation
Does the feed gear in the MSI run when
printing 1 sheet?
Check parts for
missing and
change paper, if
no problem
With tool
Go to step [32]
Without tool
Go to step [33]
32
Checking solenoid feed MSI
Does solenoid feed MSI function
normally?
Using solenoid feed MSI diagnostic tool,
check by digital output test.
In the test, close the interlock SW.
Check the spring
and stopper of
solenoid feed MSI
for disengagement
Go to step [33]
33
Checking solenoid feed MSI for resistance
value
Remove J132 from MSI feed solenoid
Is J132-1PIN<=>J132-2PIN less than
100
?
Go to step [34]
Replace
solenoid feed
MSI
34
Checking harness ASSY front 2 for
continuity
Check the following for continuity.
P132-1PIN<=>J139-11PIN
P132-2PIN<=>J139-10PIN
Go to step [35]
Replace
harness ASSY
front 2
35
Checking harness ASSY front 1A for
continuity
Check the following for continuity.
P139-1PIN<=>J13-11PIN
P139-2PIN<=>J13-10PIN
Replace MCU
HL-4200
Replace
harness ASSY
front 1A