Epson AcuLaser C4000 Service Manual page 231

EPSON AcuLaser C4000/C4100/C3000
FIP-41 Full Stack
Step
Initial setting
Do the following checks show a problem?
1
• Sensor Paper (PL7.1.4) (Full Stack) installation
• Actuator Full Stack (PL7.1.5) installation
Actuator Full Stack (PL7.1.5)
Operate the full stack actuator manually, and look at the relationship between its movement
2
and the paper sensor (PL7.1.4) (Full Stack).
Does the Actuator Full Stack move smoothly?
Sensor Paper (PL7.1.4) (Full Stack) check
3 Use the Sensor Paper (Full Stack) diagnosis tool to carry out a Digital Input Test.
Is the Sensor Paper (Full Stack) functioning normally?
Power supply to Sensor Paper (PL7.1.4) (Full Stack)
1. Remove the Sensor Paper (Full Stack).
4
2. Measure the voltage between J134-3 <=> P/J134-2.
Is there 3.3V DC between P/J134-3 <=> P/J134-2?
Sensor Paper (PL7.1.4) (Full Stack) signal check
1. Operate the Actuator Full Stack (PL7.1.5) manually.
5
2. Measure the voltage between P/J134-1 <=> P/J134-2.
Is the voltage between P/J13-3 <=> P/J13-2 +3.3V DC when the Actuator Full Stack is
operated, and 0V DC when it is released?
Harness Assy Front 2 (PL7.1.2), Harness Assy Front 1 (PL15.2.7) continuity
Check the continuity for the following lines.
6 J13-5 <=> P139-7/J139-5 <=> J134-2
J13-6 <=> P139-6/J139-6 <=> J134-1
Is there continuity in all lines?
Harness Assy Front 2 (PL7.1.2), Harness Assy Front 1 (PL15.2.7) continuity
Check the continuity for the following lines.
7 J13-4 <=> P139-8/J139-4 <=> J134-3
J13-5 <=> P139-7/J139-5 <=> J134-2
Is there continuity in all lines?
Troubleshooting
Check
Level 2 FIP
Treatment
Yes
Reinstall applicable parts. Go to step 2.
• With the tool: Go to step 3. Replace the Actuator Full Stack.
• Without the tool: Go to step 4. (Refer to Ch4-4.2.10.3)
Replace the PWBA MCU &
Go to step 4.
HVPS. (Refer to Ch4-4.2.18.1)
Go to step 5. Go to step 6.
Replace the PWBA MCU & Replace the Sensor Paper (Full
HVPS. (Refer to Ch4-4.2.18.1) Stack). (Refer to Ch4-4.2.10.2)
Replace the Harness with no
Go to step 7.
continuity.
Replace the Harness with no
Go to step 8.
continuity.
Revision F
No
3-215