HP LaserJet 4L - Page 218

Troubleshooting
Printer Error Troubleshooting
●
Table 7-12 Engine Error
LaserJet LaserJet 4P/4MP
4L/4ML LEDs
Display Panel
Description & Recommendations
a
D
+=
55 ERROR
The Formatter and DC Controller are not
~m
communicating. Power-cycle the printer, If
~=
this doesn’t clear the message:
1. Reseat the Formatter PCA into the DC
Om
Controller connector,
Error light is on;
2. Replace the Formatter PCA.
all others are
3. Replace the DC Controller PCA.
off.
4. Replace the DC Controller connector.
Table 7-13
Main Motor Error
LaserJet
LaserJet 4P/4MP
4L/4ML LEDs Display Panel
Description & Recommendations
(See Tab/e 7-2, 57 ERROR The DC Controller has reported a general
Paper Jam)
motor failure. The Main Motor is controlled
by the DC Controller PCA, and seated into
connector J601. Power-cycle the printer. If
this doesn’t clear the message:
1, Reseat the Main Motor into the DC
Controller connector.
2, Inspect the Gear Train for debris that
would block the free operation of the gears,
3. The toner cartridge may not be rotating.
Refer to “Drum Rotation Functional Check
later in this chapter,
4, Main Motor faulty. Power-up the printer
and observe if stacker rollers rotate. If not,
replace the Main Motor,
5. Replace the DC Controller PCA.
7-15