Brother HL-4200CN Service Manual page 228

Step
Checking harness ASSY DRV1 for
continuity
Check the following for continuity.
15
J41-30PIN<=>J11-11PIN
J41-31PIN<=>J11-10PIN
J41-33PIN<=>J11-8PIN
Checking clutch ASSY turn for operation
Does the turn roll in the feeder run when
16
printing 1 sheet?
Checking clutch ASSY turn
Does clutch ASSY turn function normally?
17 Using clutch ASSY turn diagnostic tool,
check by digital output test.
In the test, close the interlock SW.
Checking PWBA HBN DRV for signal
18
Is P/J47-13PIN<=>P/J60-2PIN +24VDC?
Checking harness ASSY FDR for
continuity
19 Check the following for continuity.
J47-13PIN<=>P475-2PIN
J47-14PIN<=>P475-1PIN
Checking clutch ASSY turn for resistance
value
20 Remove the clutch connector J475.
Is J475-1PIN<=>J475-2PIN less than
200�?
Checking harness ASSY DRV2-2 for
continuity
21
Is J12-9PIN<=>J42-22PIN continuous
normally?
Checking solenoid feed for operation
Does the feed gear in the feeder run when
printing 1 sheet?
22
Checking solenoid feed
Does solenoid feed function normally?
Using solenoid feed diagnostic tool,
23
check by digital output test.
In the test, close the interlock SW.
Checking PWBA HBN DRV for signal
24
Is P/J47-11PIN<=>P/J60-2PIN +24VDC?
Checking harness ASSY FDR for
continuity
25 Check the following for continuity.
J47-11PIN<=>P474-2PIN
J47-12PIN<=>P474-1PIN
Checking solenoid feed for resistance
value
26
Remove the solenoid connector J474.
Is J474-1PIN<=>J474-2PIN less than
100�?
Check
V-22
Remedy
Yes
Replace
Replace MCU
harness ASSY
HL-4200
DRV1
Go to step [17]
Go to step [22]
Go to step [18]
Check the clutch
for slip, or the
Go to step [18]
gear
for damage.
Replace PWBA
Go to step [19]
HBN DRV
Replace
harness ASSY
Go to step [20]
FDR
Replace clutch
Go to step [21]
ASSY turn
Replace
Replace MCU
harness ASSY
HL-4200
DRV2-2
Check parts for
missing and
Go to step [23]
change paper, if
Go to step [24]
no problem
Check the spring
and stopper of
Go to step [24]
tray1 feed
solenoid for
disengagement
Replace PWBA
Go to step [25]
HBN DRV
Replace
harness ASSY
Go to step [26]
FDR
Replace
Go to step [27]
solenoid feed
No
With tool
Without tool
With tool
Without tool