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01G Fused Distribution Check
Procedure
WARNING
Do not repair or install a new fuse F1 on the IOT PWB. Repairing or installing a new fuse
can cause overheating and a risk of fire.
WARNING
Do not repair or install a new fuse F1 on the power distribution PWB. Repairing or
installing a new fuse can cause overheating and a risk of fire.
WARNING
Do not repair or install a new fuse F1 on the main drive PWB. Repairing or installing a
new fuse can cause overheating and a risk of fire.
WARNING
Do not install a fuse of a different type or rating. Installing the wrong type or rating of
fuse can cause overheating and a risk of fire.
CAUTION
If the surface mounted fuse on the power distribution PWB, IOT PWB or main drive PWB has
blown, do not install a new PWB until the cause of the fault is repaired.
Use this procedure when checking the +24V fused distribution. Perform the following:
1.
Switch off the machine, GP 14.
2.
Refer to Figure 2, Figure 3 and Figure 4. Disconnect the relevant circuit or harnesses.
Check each one for evidence of overheating or short circuits, GP 7.
3.
Refer to 01H Short Circuits and Overloads RAP.
4.
Monitor the +24V test point as the circuit or harnesses are individually reconnected as fol-
lows:
a.
Switch on the machine, GP 14.
b.
Monitor the voltage at the appropriate test point:
•
On the power distribution PWB, Figure 2:
–
Flag 2, P/J132.
–
Flag 4, P/J135.
•
On the IOT PWB, Figure 3:
–
Flag 6, P/J4.
–
Flag 7, P/J6.
–
Flag 8, P/J10.
–
Flag 9, P/J11.
–
Flag 10, P/J14.
–
Flag 19, P/J61.
•
On the main drive module, Figure 4:
–
Flag 12, P/J151.
–
Flag 13, PJ53.
–
Flag 14, P/J154.
•
On the paper path module, Figure 4
–
Flag 15, P/J17.
•
On the ROS, Figure 5.
Status Indicator RAPs
01G
–
Flag 16, P/J18.
•
On the tray 1 and 2 control PWB and HCF control PWB, Figure 5.
–
Flag 17, P/J19
–
Flag 18, P/J272.
c.
Connect the circuit or harness.
d.
If the voltage drops lower than +22V, switch off the machine, GP 14. Recheck the
component and harness for overheating or short circuits. Repair or install new com-
ponents as necessary.
e.
Actuate the component using its control code, dC330.
f.
If the voltage drops lower than +22V, switch off the machine, GP 14. Recheck the
component and harness for overheating or short circuits. Repair or install new com-
ponents as necessary.
Figure 1 +24 volt in-line fuse
August 2007
2-46
In-line +24 volt fuse
WorkCentre 5687 Family
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