Epson AcuLaser C4000 Service Manual page 151

EPSON AcuLaser C4000/C4100/C3000
FIP-9 Media Type Mismatch
Step
Initial setting
Do the following checks show a problem?
1
• Sensor OHP (PL10.1.16) installation
• Chute Assy Regi installation
Sensor OHP (PL10.1.16) check
1. Use the diagnosis tool to carry out a digital input test.
2 2. Move a normal-sized piece of paper in and out of the sensor range.
3. Move a piece of OHP film in and out of the sensor range.
Is the Sensor OHP functioning normally?
Sensor OHP (PL10.1.16) signal check
1. Remove the Sensor OHP. (Refer to Ch4-4.2.13.4)
2. Connect the sensor OHP connector.
3
3. Measure the voltage between P/J321-2 <=> P/J321-3 with that out of the paper is sensor
range.
Is the voltage between P/J321-2 <=> P/J321-3 0V DC?
PWBA MCU & HVPS (PL15.1.2) signal check
1. Move normal-sized piece of paper into the sensor OHP (PL10.1.16) range.
4
2. Measure the voltage between P/J321-2 <=> P/J321-3.
Does the voltage change between 0V DC and +3.3V DC between P/J321-2 <=> P/J321-3?
Harness Assy OHP (PL10.1.17) continuity
1. Disconnect the P/J321 connector from the Sensor OHP (PL10.1.16).
5 2. Disconnect the P/J32 connector from the PWBA MCU & HVPS (PL15.1.2).
3. Check the continuity between J32-2 <=> J321-2.
Is there continuity between J32-2 <=> J321-2?
Power supply to Sensor OHP (PL10.1.16)
6 Measure the voltage between P/J321-1 <=> P/J321-3.
Is the voltage between P/J321-1 <=> P/J321-3 5V DC?
Harness Assy OHP (PL10.1.17) continuity
1. Disconnect P/J32 from the PWBA MCU & HVPS.
7 2. Disconnect the P/J321 connector from the Sensor OHP.
3. Check the continuity between J32-3 <=> J321-1.
Is there continuity between J32-3 <=> J321-1?
Troubleshooting
Check
Level 2 FIP
Treatment
Yes
• With the tool: Go to step 2.
Reinstall applicable parts.
• Without the tool: Go to step 3.
Replace the PWBA MCU &
Go to step 3.
HVPS. (Refer to Ch4-4.2.18.1)
Go to step 4. Go to step 6.
Go to step 5. Go to step 6.
Replace the PWBA MCU & Replace the Harness Assy OHP
HVPS. (Refer to Ch4-4.2.18.1) (PL10.1.17).
Replace the Sensor OHP.
Go to step 7.
(Refer to Ch4-4.2.18.1)
Replace the Harness Assy OHP
Go to step 8.
(PL10.1.17).
Revision F
No
3-135