Epson AcuLaser C4000 Service Manual page 185

EPSON AcuLaser C4000/C4100/C3000
FIP-20 Firmware Error
Step
1 Does the error occur even when the power is turned Off and back On?
Harness Assy EEPROM (PL15.2.10) connection check
2 Check the connection of the P/J144 connector of the PWB EEPROM (PL12.1.8).
Is P/J144 correctly connected?
3.3V DC power supply to PWB EEPROM (PL12.1.8)
1. Disconnect the P/J144 connector from the PWB EEPROM.
3
2. Measure the voltage between J144-2 <=> J144-1.
Is there 3.3V DC between J144-2 <=> J144-1?
3.3V DC power supply to PWB Drive (PL15.1.15)
1. Disconnect the P/J61 connector from the PWB Drive.
4
2. Measure the voltage between J61-6 <=> J61-5.
Is there 3.3V DC between J61-6 <=> J61-5?
Harness Assy EEPROM (PL15.2.10) connection
1. Remove the PWBA MCU & HVPS. (Refer to Ch4-4.2.18.1)
5
2. Check the connection of the P/J140 connector of the PWBA MCU & HVPS (PL15.1.2).
Is P/J140 correctly connected?
Harness Assy EEPROM (PL15.2.10) continuity
1. Remove the PWBA MCU & HVPS. (Refer to Ch4-4.2.18.1)
2. Disconnect the P/J140 connector from the PWBA MCU & HVPS (PL15.1.2).
6 3. Check the continuity for the following lines.
J140-9 <=> J144-2
J140-10 <=> J144-1
Is there continuity in all lines between J140 <=> J144?
PWB EEPROM (PL12.1.8)
1. Replace the PWB EEPROM. (Refer to Ch4-4.2.15.8)
7
2. Turn On the power.
Does the error code still appear?
Troubleshooting
Check
Level 2 FIP
Treatment
Yes
See if the problem recurs; if it
Go to step 2.
does, go to step 2.
Go to step 3. Connect P/J144 correctly.
Go to step 7. Go to step 4.
Go to step 5. Go to FIP-DC (Page 5-280).
Go to step 6. Connect P/J140 correctly.
Replace the PWBA MCU & Replace the Harness Assy
HVPS. (Refer to Ch4-4.2.18.1) EEPROM (PL15.2.10).
Go to step 8. Problem solved.
Revision F
No
3-169