NOTE: Detailed instructions for Take-Apart can be found in the Technical
Procedures.
INTRODUCTION
Before starting, read the section titled "Preliminary Checks". Items listed
here do not require any disassembly, tools, or special setups and can save you
time and your customer money when troubleshooting the ImageWriter LQ.
If the suggestions in "Preliminary Checks" do not correct the problem, proceed
to the appropriate symptom/cure chart.
How to Use the Symptom/Cure Chart:
First locate the symptom that comes closest to the symptom describing the
problem; then perform the first corrective action on the solution list. If
that corrective action does not fix the problem, proceed to the next action.
If you replace a module and find that the problem remains, reinstall the
original module before proceeding.
If a step asks you to test something, the procedure can be located elsewhere in
this section.
If a tested component is defective, replace it. If it is not defective,
proceed to the next action listed.
PRELIMINARY CHECKS
The following chart lists common problems that have simple solutions. Checking
for these problems when you begin troubleshooting can save you time and effort.
Power light off, no carrier movement
1. Try another electrical outlet.
2. International units only: Verify the setting of the voltage selector.
3. Replace the power cord.
Error light blinks
Close the front cover.
Error light on, Select light off
No paper is inserted or is improperly inserted.
No printing
1. Make sure the printer is selected.
2. Verify that the interface connections to the printer are secure.
3. Verify the DIP switch settings.
Garbled printing
1. Verify the DIP switch settings.
2. Verify that the interface connections to the printer are secure.
Software-specific problem
Try using a known-good piece of software.
No communication with option card installed
Verify that DIP switch 2 position 4 is set to ON.
Paper feed difficulties (binding, tearing, etc.)
1. Verify the setting of the paper thickness lever.
2. Check, and if necessary, clear the paper path.
Torn Paper
1. Verify the setting of the paper thickness lever.
2. Verify that the paper-feed lever is set to the type of paper being used.
3. Verify that the paper is correctly installed and, if using tractor feed
paper, that the sprocket holes are properly engaged on the tractor
sprockets.
Printing too light
1. Verify the setting of the paper thickness lever.
2. Replace the ribbon.
Printing too dark
Verify the setting of the paper thickness lever.
SYMPTOM/CURE CHART
Power Problems
Power light off and no carrier motion
1. Test the primary fuse. If defective, replace it.
2. Test the three secondary fuses. If any are defective, replace the
defective one(s).
3. Test the power switch. If defective, replace it.
4. Replace the main board.
5. Replace the transformer.
6. Replace the noise filter PCA.
Communication Problems
No printing or garbled printing
Perform the printer self-test. If the self-test passes, run the diagnostics
to test the main board. If the self-test fails, replace the main board.
Carrier Problems
Carrier moves at power on, but doesn't return to home position
1. Test the home position switch. If defective, replace it.
2. Perform the "Home Position Switch Adjustment".
3. Replace the main board.
Power light on, no carrier motion
1. Check, and if obstructed, clear the carrier area.
2. Test the carrier motor. If defective, replace it.
3. Replace the main board.
Paper Feed Problems
No paper feed
1. Check the paper feed gear train and clear it if it is obstructed.
2. Test the paper-handling change switch. If defective, replace it.
3. Test the paper feed motor. If defective, replace it.
4. Replace the main board.
Paper bail doesn't automatically open and close
1. Test the auto-load solenoid. If defective, replace it.
2. Replace the main board.
For more ImageWriter LQ troubleshooting information see the following articles:
ImageWriter LQ General Troubleshooting (Part 2 of 3)
ImageWriter LQ General Troubleshooting (Part 3 of 3)
Refer to the Technical Procedures for the take apart instructions.