Troubleshooting; Service Flowchart - Epson EPL-N4000 Service Manual

EPSON EPL-N4000/EPL-N4000+

3.1 Troubleshooting

3.1.1 Service Flowchart

To use the Service Flowchart, start at Block 1 to identify the problem.
After you have identified the problem, return to the Service Flowchart
and proceed to Block 2 where you inspect and clean the printer (a
through cleaning frequently solves many printer problems). You
continue down the Flowchart, in this manner, always returning to the
next block in the Service Flowchart after you have completed the tasks
outlined in the current block.
If you choose not to use the Service Flowchart, we recommend that
you start at the appropriate Fault Isolation Procedure (FIP) Flowchart
and proceed from there. In many cases, merely replacing the Print
Cartridge with a new one could solve the printer problem.
Rev.B
Table 3-1. Service Flowchart
Block
1 • Identify the problem.
1. Vertify that the reported problem does exit.
2. Check for any error codes or messages.
3. Print three test prints.
4. Make note of any print quality problems in the test prints.
5. Make note of any mechanical or electrical abnormalities present.
6. Make note of any unusual noise or smell coming from the printer.
2 • Inspect and Clean the printer.
1. Switch Off printer power.
2. Disconnect the AC power cord from the wall outlet.
3. Remove the EP Cartridge and shield it from strong light.
4. Inspect the printer interior and remove any foreign matter such as
paper clips, staples, pieces of paper, paper dust or toner.
5. Clean the printer interior with a lint-free cloth, dampered slightly
with cold water. Do not use solvents or chemical cleaners to clean
the printer interior. Do not use any type of oil or lubricant on
printer parts.
6. Clean all rubber rollers with a lint-free cloth that is dampened
slightly with cold water. Use a clean, dry, lint-free cloth to dry the
rollers.
7. Clean the ROS window with a soft, dry, lint-free cloth.
8. Use canned air to clean the BTR.
Do not touch the BTR with your fingers.
Do not use a brush or damp cloth to clean the BTR.
9. While you are cleaning, inspect the interior of the printer for
damaged wires, loose connections, toner leakage, and worn or
damaged parts.
10.If the EP Cartridge appears excessively dirty or obviously
damaged, replace it with a new one.
Chapter 3 Troubleshooting
Procedure
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