Epson AcuLaser C4000 Service Manual page 221

EPSON AcuLaser C4000/C4100/C3000
FIP-36 BTR Life Warning
Step
Initial setting
Do the following checks show a problem?
1
• BTR Assy (PL9.1.2) installation
• Sensor TNR Full (PL6.1.13) installation
BTR Assy (PL9.1.2)
1. Replace the BTR Assy.
2
2. Turn On the power.
Does the error still occur even when the new BTR Assy is installed?
Sensor TNR Full check
3 Use the Sensor TNR Full diagnosis tool to carry out a Digital Input Test.
Is the Sensor TNR Full functioning normally?
Sensor TNR Full (PL6.1.13) signal check
1. Remove the BTR Assy. (Refer to Ch4-4.2.12.2)
2. Insert an obstruction into the sensor element of the Sensor TNR Full and then remove it.
4
3. Measure the following voltage at the P/J142 connector of the sensor TNR Full.
P/J142-2 <=> P/J142-3
Is the voltage between P/J142-2 <=> P/J142-3 3.3V DC when the obstruction is inserted,
and 0V DC when it is removed?
Power supply to Sensor TNR Full (PL6.1.13)
Measure the following voltage at the P/J142 connector of the sensor TNR Full.
5
P/J142-1 <=> P/J142-3
Is there +5V DC between P/J142-1 <=> P/J142-3?
Harness Assy TFLSNS (PL6.1.14) continuity check
1. Disconnect the P/J142 connector of the sensor TNR Full. (Refer to Ch4-4.2.9.3)
2. Disconnect the P/J141 relay connector between the Harness Assy TFLSNS and the
Harness Assy EEPROM (PL15.2.10).
3. Check the continuity for the following lines.
6
J142-1 <=> J141-3
J142-2 <=> J141-2
J142-3 <=> J141-1
Is the continuity between J142 <=> J141 normal?
Troubleshooting
Check
Level 2 FIP
Treatment
Yes
Reinstall applicable parts. Go to step 2.
• With the tool: Go to step 3.
End of procedure
• Without the tool: Go to step 4.
Go to step 7. Go to step 4.
Go to step 11. Go to step 5.
Replace the Harness Assy
Go to step 6. EEPROM (PL15.2.10).
Go to step 6.
Replace the Sensor TNR Full. Replace the Harness Assy
(Refer to Ch4-4.2.9.3) TFLSNS (PL6.1.14).
Revision F
No
3-205