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Troubleshooting the Printing System
7-43
There are four photo sensors (PS102, PS103, PS106, PS501) in the
paper path for detecting arrival or passing of the paper.
If the paper does not reach or pass these sensors within the
prescribed time, the microprocessor on the Engine Controller Board
assesses a paper jam and notifies the Formatter of the jam. See page
7-82 for the location and function of sensors.
Is the customer overfilling the paper trays? Ensure that paper is NOT over the maximum
fill marks in the paper trays. Observe the
customer loading paper in the trays.
Are the paper tray guides set correctly? Ensure that the Tray 2 and 3 left-side paper
guides are set correctly at both the front and
rear of the tray, and that the front guide is
locked into the correct position. For Tray 4
ensure all adjustments are set correctly; front,
back, and side, at the top and bottom of the
tray.
Does the printer need to be cleaned? Inspect the paper path and paper path rollers.
See the cleaning procedures in Chapter 4.
When was maintenance last performed on the
printer?
Determine from the Configuration Page the
number of pages since the last maintenance
(see Figure 7-7 on page 7-48). The Printer
Maintenance Kit should be installed every
200,000 images.
Table 7-7. General Paper Path Troubleshooting Questions (continued)
Troubleshooting Check Action
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