TM 5-3610-286-20
Section IV.
Para.
2-10.
General . . .. . . . . . . . . . .
ORGANIZATIONAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING
Page
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2-8
2-10.
General. This section contains troubleshooting procedures to determine the probable cause
of observed equipment malfunctions. Tests or inspections are provided to isolate the faulty component
and corrective actions are provided to eliminate the malfunction.
a. Procedure. Refer to the symptom index to locate the troubleshooting procedure for the ob-
served malfunction. The table lists the common malfunctions that may occur during the operation or
maintenance of the printing press. Perform the tests or inspections, and the recommended corrective
action in the order listed in the troubleshooting table. If the malfunction is corrected by a specific
corrective action, do not continue with the remaining steps, if any, of the troubleshooting procedure.
b. Electrical Tests. Observe all warnings and cautions when making electrical tests. Before
checking the printing press, make sure that electrical power from an external source is supplied to the
press section. Also check that all safety switches are operating properly, and all guards are in
position to allow the press to operate (refer to table 2-2). When performing electrical tests, begin
with power checks, continuity checks, and other procedures that may have cut off power supplied to
the suspected faulty component. In most cases, the malfunction is caused by lack of power to a
component rather than a fault in a component. Do not attempt to replace or repair a component until
continuity from the power source is checked.
NOTE
Wires are pretagged in the printing press and match their connecting points. If
wiring is replaced, retag wires.
Table 2-2. Safety Switches.
Reference
designation
b8
b11
b26
b30
b31
Normal
condition
MACHINE OPERATE/
FEEDER STOP
OPERATE/SAFETY
NC
NC
NC
Function
Operating
Safety
(Interlocks with b11)
Operating
Safety
(Interlocks with b8)
Ink Roller Guard
Finger Safety
Form Roller Safety
Location
Feeder Control Panel
Delivery End (O/S)
Control Panel
Feeder End
Delivery End
O/S Side Plate
2-8
