90
Chapter 5 Troubleshooting Display Messages
090 SHUTTLE COVER
OPEN
CLOSE SHUTTLE
COVER
The shuttle cover is
missing, damaged, or
not correctly installed.
1. Inspect shuttle cover for warping,
damage, or missing magnet. (The
magnet covers the sensor housing when
the cover is installed.) If the shuttle cover
is warped, damaged, or the magnet is
missing, replace the shuttle cover
assembly.
2. Check shuttle cover installation. Make
sure the cover lies flat and the two
captive screws are fully seated.
3. Power on the printer. If the message
appears, power off the printer. Remove
the paper guide assembly or pedestal top
cover. Disconnect P107 on the CMX
controller board and check the CVO
switch by testing for continuity across
pins 18 and 20. (Refer to the Main Wire
Harness Test Tables, page 291.)
Replace the cover open switch assembly,
as required.
4. Power on the printer. If the message
appears, replace the CMX controller
board. Record the message and return it
with the defective board.
092 RIBBON DRIVER
CIRCUIT
The CMX controller
board does not detect
a ribbon drive motor.
1. Cycle power. If the message appears,
power off the printer. Remove the paper
guide assembly or pedestal top cover.
Reseat the cable connections of both
ribbon drive motors.
2. Power on the printer. Using a
screwdriver, short across the ribbon
guide screws to reverse ribbon hub
motion. Check for a ribbon drive motor
that will not wind the ribbon. If the ribbon
will not wind in one or both directions,
replace the defective ribbon drive
motor(s). If the ribbon winds in both
directions, replace the CMX controller
board. Record the message and return it
with the defective board.
Table 4. Message List
Operator Panel
Message
Explanation Corrective Action
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