Epson EPL-6200, Service Manual

Page: 120 / 204

EPSON EPL-6200/EPL-6200L Revision A
Troubleshooting Troubleshooting for Abnormal Operations 120
3.4.2 Electrical Noise
Table 3-28. Troubleshooting for “Electrical Noise”
Step Action and Question Yes No
Parts below can be the source of this error ( Chapter 4 Disassembly and Assembly )
• Main Board Assy (C533/C534 Main) (p.146)
• Power Supply Unit (PU1) (p.151)
• Fuser Unit (p.152)
• High Voltage Unit (HV1) (p.151)
• Photoconductor Unit (p.135)
• Developer Cartridge (p.135)
• Paper Cassette Unit Control Board (p.162)
•
Duplex Unit Control Board
(p.163)
1
External noise
1. Check to see if within 3 m from the printer there is
another electrical apparatus, such as a generator,
radio transmitter or an apparatus incorporating a
motor.
2. Turn off the power to the electrical apparatus in
question or move the printer to a position at least 6
m distant from the apparatus.
♦
Does the problem with electrical noise still occur?
Go to Step 2
Problem
solved
2
AC grounding
Check the AC power connection.
♦
Is the AC power cable connected and grounded
properly?
Go to Step 3
Ask the
customer for
repair of the
AC power
connection.
3
Grounding screw
Check the grounding screw of the AC Inlet.
♦ Is the cable grounded properly?
Go to Step 4
Install the
grounding
screw
properly.
4
Photoconductor Unit (Drum Cartridge)/Developer
Cartridge (toner cartridge)
Replace the Photoconductor Unit or Developer
Cartridge.
♦ Does the problem with electrical noise still occur?
Go to Step 5
Problem
solved
5
Continuity of cables
Check continuity of each cable.
♦
Does each cable have continuity?
Go to Step 6
Replace the
defective
cable.
6
Grounding of circuit boards
Check grounding of circuit boards.
♦
Is grounding ensured?
Go to Step 7
Ensure
grounding.
7
Fuser unit
Replace the fuser unit.
♦ Does the problem still occur?
Go to Step8
Replace the
fuser unit.
8
High voltage unit
Replace the high voltage unit.
♦ Does the problem still occur?
Go to Step9
Replace the
high voltage
unit.
9
Power supply unit
Replace the power supply unit.
♦ Does the problem still occur?
Go to Step10
Replace the
power supply
unit.
10
Main Board Assy.
Replace the Main Board Assy.
♦ Does the problem still occur?
Replace all
the relevant
parts.
Problem
solved
Table 3-28. Troubleshooting for “Electrical Noise” (continued)
Step Action and Question Yes No