Hvps/Mcu - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.4.16 HVPS/MCU

Table 3-75. Troubleshooting for HVPS/MCU
Step Action and Question
Parts below can be the source of this error

• HVPS/MCU

(p.301)
• GUIDE ASSY CRU R
(p.257)
• Imaging Cartridge
• HARNESS ASSY ANT
• HARNESS ASSY LVPS
Power supply by GUIDE ASSY CRU R
1. Check to see if the GUIDE ASSY CRU R is
installed properly.
♦
Check if the GUIDE ASSY CRU R is installed
properly.
♦
Check if the GUIDE ASSY CRU R contacts with
the HVPS/MCU and the plate of the Imaging
Cartridge properly.
♦
Check if the HVPS/MCU is assembled to under the
hook of the FRAME.
1
Note1
GUIDE ASSY CRU R
1. Remove the GUIDE ASSY CRU R. (p.257)
2
2. Check the Plate Earth of the GUIDE ASSY CRU R.
♦
Is the Plate Earth free from deformation, dirt and
damage?
Troubleshooting
Yes No
(Chapter 4 Disassembly and
Assembly)
Replace the
Go to Step 2 GUIDE ASSY
CRU R
HOOK
JG54A7AA
Replace the
Go to Step 3 GUIDE ASSY
CRU R
Troubleshooting for Individual Units
Table 3-75. Troubleshooting for HVPS/MCU (continued)
Step Action and Question
24V power supply to the HVPS/MCU
1. Remove the Imaging Cartridge.
2. Measure the voltage between P/J10-1 ↔ P/J10-4 on
3
the HVPS/MCU.
(Refer to "Connectors (p.406)")
24V between P/J10-1 ↔ P/J10-4?
♦
Continuity of the HARNESS ASSY LVPS
1. Disconnect the connector P/J10 on the HVPS/MCU.
4
2. Disconnect the connector P/J42 on the LVPS.
3. Check continuity between P/J10 ↔ P/J42.
Is there continuity between P/J10 ↔ P/J42?
♦
HARNESS ASSY ANT
1. Disconnect the connector P/J15 on the HVPS/MCU.
5
2. Check continuity between J15 ↔ J150.
Is there continuity between J15 ↔ J150?
♦
Revision C
Yes No
Go to Step 5 Go to Step 4
Replace the
Go to 3.4.1
HARNESS
LVPS (p.111)
ASSY LVPS
Replace the
Replace the
HARNESS
HVPS/MCU
ASSY ANT
126
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