Xerox 3050 Service Manual page 153

8.1 Media Transport
RAP
This RAP is used for Media Transport
problems that may or may not indicate a
status code.
The problem may occur if there is a problem
with the Media Transport mechanical
components, the Transport Drive Motor or
the motor control circuitry.
NOTE: The component locator drawings and
the circuit diagram are on the next four
pages.
Initial Actions
A
WARNING
The Fuser Heat Roll may be hot.
Be careful and do not touch the
roll while performing this
procedure.
Lower the Sheet Feed Shelf and the
Latching Cover. Check the media path
for obstructions. Remove any
obstructions in the media path.
Check that the media is in good
condition and is loaded correctly.
Raise the Fuser Fabric Guide in order
to observe the Sheet Drive Roll. Check
the Transport Drive Motor, drive belts
and drive rolls for binding by rotating
the Cut Sheet Drive Roll manually.
The roll will rotate the drive belts,
which in turn will rotate the drive rolls
and motor.
Ensure that the customer is running
media that meets the type
specification.
Ensure that the customer is running
media that meets the
size
specification.
Check the Media Transport connector
(A21 PI 11)
for damage and ensure
that the connector and pins are seated
correctly.
Check the Control PWB connector for
the Media Transport (A3 P305) for
damaged. Ensure that the connector
and pins are seated correctly.
With the copier in the Standby mode,
check that media heater i s warm.
If
the heater is not warm, refer to the
OF1
Media Heater
RAP
located
in
Section 2.
Procedure
Lower the Sheet Feed Shelf and cheat the
Shelf Interlock switch in order to observe the
Sheet Drive Belt. Enter the code (0917-
BOND]
in
order to check the Transport Drive
Motor.
The Cut Sheet Drive
Belt
rotates.
N
Observe the Registration Drive Belt in
order to determine if the Transport Drive
Motor is energized.
The Transport Drive Motor i s energized.
N
Press Power Off
(0).
Go to FLAG 1
and check for an open circuit in the
wires to the Drive Motor
PWB.
If there is no open circuit, disconnect
the drive motor connector (A24 P2).
Set the Multimeter (600T1616) to
ohms,
DC,
+,
200 ohms. Check the
resistance of the motor, refer to Note
3.
The check is good.
Y N
Go to HAG 2 and check for an
open circuit or a short circuit to
ground in the wires to the
Transport Drive Motor.
If there is no open or short
circuit, replace the Transport
Drive Motor
(MOT1).
A B C
101 92
3050
2-195
8.1 Media Transport RAP