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4.3.4 Carriage Motion Test
The printer is capable of executing a carriage motion self test which causes the printer
to execute carriage motions and ribbon motions continuously. Detected failures cause
the Fault light to blink.
During this test, paper supply is not checked by the printer. When the cover is open,
carriage motion stops. It shall resume after the cover is put in place, and the Ready
switch is pressed.
During this test, the carriage home position is checked at regular intervals, approxima-
tely 100 cycles.
4.3.5 Paper Sensor Adjustment
This adjustment must be performed when either the main board or mechanical
assembly is replaced.
This adjustment enables the setting of the paper sensor photocell located underneath
the platen.
The adjustment procedure is the following:
a.
- Printer is turned off.
- Insert paper in the tractors but do not load paper under the platen.
- Set the printer to tractor mode.
b.
Simultaneously press the Quiet, Parking, LF buttons whilest switching on the
printer.
c.
Release all buttons when all indicators turn on. Carriage resets, and beep is
produced and all indicators turn off except the Fault indicator which is on.
d.
Press the Quiet button and release it. All indicators turn on and off with the
exception of the Fault indicator.
e.
Load paper manually with the platen until the paper is put in front of the
printhead. During this operation, the platen motion is released to enable smooth
manual loading.
f.
Press the Quiet button and release it. After 1 or 2 seconds, all indicators turn on
and off with the exception of the Fault indicator.
At this point the printer is able to determine a setting for the paper sensor
4-4
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