Troubleshooting - Epson ActionLaser 1300 EPL-3000 Service Manual

5.3 TROUBLESHOOTING

This section describes the troubleshooting of abnormal operations and print quality problems.
Troubleshooting of Abnormai Operation
5.3.1
This section describes how to detect and determine the cause of malfunctions and suggests what
actions to take. Each paragraph refers you to a detailed troubleshooting table.
Symptom
The printer does not operate at all. I ITW heater tamp in fusing unit does not come on. I 5-3
Paper jam orcoveropen displayed The cover is cbsed, but the LCD displayed paper $5
Paper empty or feed jam displayed The paper is loaded in the paper tray, but the
Laser light error displayed
Scanner motor error displayed
Fan motor error displayed
RAM error displayed
ROM error disdavecf
Other error
The fuse on the PWB-E
board mav be bbwn.
Connector CN3 on PWB-A
board or connector CN201
on C144 MAIN board may
be disconnected.
PWB-E board maybe dead.
dead.
cause
The C144 MAIN board may
be dead.
5-2
Printer Condition
The heater lamp in fusing unit comes on, but
LED does not operate.
iam or oover men.
LED displays paper empty or feed jam.
The LCD disoiavs fusina unit.
The LCD dispfays laser light error.
The LCD displays scanner motor error.
The LCD displays EEPROM format emor.
The LCD displays RAM error.
The LCD disdavs ROM error.
Other error
Step
Checkpoint
Is fuse blown on the PWB-E
board?
Is connector CN3 on the
PWB-A board or connector
2
disconnected?
output of +5 VDC between pin
3
2 (+) and pin 1 (-) for CN3 on
PWB-E board?
—
4
Step j
Checkpoint
5-4
5-6
I 5-7
5-8
5-9
5-1o
5-11
5-12
5-13
5-14
Finding
Yes Replace the fuse.
Connect CN3 on
PWB-A board or
Yes
MAIN board.
Replace the
No
PWB-E board.
Replace the C144
—
MAIN board.
Finding
board.
Rev. A
I
I