HP 4100tn - LaserJet B/W Laser Printer - Page 197

EN Chapter 7 Troubleshooting 195
CHECK INPUT DEVICE
alternates with
PAPER PATH OPEN
PLEASE CLOSE IT
The optional input tray
cannot feed print media to
the printer because a door
or paper guide is open.
1. Check the doors and paper
guides and close any that are
open.
2. If doors and trays are closed,
check tabs and sensor levers in
the tray for proper operation.
Replace any defective tabs or
sensors.
3. Replace the PCA controller in
the feeder.
CHECK OUTPUT DEVICE
alternates with
CLOSE OUTPUT
DELIVERY PATH
The optional output device
is not properly connected
to the printer.
1. Ensure the optional output
device is fully seated and
properly installed.
2. Check any doors on the output
device and verify they are closed.
CHECKING PAPER PATH
The engine is checking for
possible jams or print
media that was not cleared
from the printer.
Wait for the printer to finish
checking (up to 30 seconds).
CLOSE TOP COVER
The top cover is open and
must be closed for printing
to continue.
1. Close the top cover.
2. If the message persists, check
SW101 for proper operation.
(See page 263 for the sensor
location.) Make sure wires are
connected.
3. Replace SW101.
4. If the new switch does not
solve the error, the wiring or the
engine controller board might be
defective.
DISK DEVICE FAILURE
The EIO disk had a critical
failure or fatal error.
1. Reseat the EIO disk.
2. Remove the EIO disk and
replace it with a new one.
DISK FILE OPERATION
FAILED
The requested operation
could not be performed (for
example, attempting to
download a file to a
nonexistent directory).
1. Check the file name and the
directory name.
2. Reseat the EIO disk.
3. Retry the operation.
Table 37. Printer messages (continued)
Control panel
message
Explanation Recommended action