Panasonic UF-890 Service Manual page 187

Error
Code
54 A/D Converter error.
55 Printer Motor Ready Signal abnormal.
61 Unit detected "No Toner Cartridge".
63 Unit detected "Printer Door Open".
64 Unit detected "No Cassette".
65 Unit detected "Out of Paper".
68 Jam Access Cover of Optional 250 Sheet
Feeder is open.
69 Jam Access Cover of Optional 500 Sheet
Feeder is open.
71 Interface error occurs with the 500 sheet
optional cassette.
81 No response from the LP Controller.
Note:
If an 021 series Error Code occurs, 021-25 (Thermistor Open) or 021-26 (Thermistor detected
temperature over 392
unit and the service personnel during abnormal increase in temperature.
Once activated, this information is downloaded into the LPC PC Board's SRAM, disabling the Fuser
Lamp and preventing it from turning ON again.
In order to reset this circuit, please follow the procedure below.
1) Reset the LBP Fuser by using Test Mode 7-1-2 (Section 5.6) and Power OFF/ON.
2) Replace the Thermistor or Fuser Unit. If the problem persists.
3) Replace the LPC PCB.
Description of Problems
° °
F (200 C), a pre-programmed recovery safety software is activated to protect the
1. LPC PCB defective.
1. Connector is not properly connected.
2. Printer Motor defective.
3. LPC PCB defective.
1. Toner Cartridge not installed.
2. Toner Sensor defective.
1. Printer door is not closed.
2. ILS PCB defective.
1. Cassette not installed or partially open.
2. Cassette Sensor defective.
1. The Paper Cassette is empty.
2. Paper Detect Sensor defective.
1. Jam Access Cover Sensor of Optional 250
Sheet Feeder defective.
1. Jam Access Cover Sensor of Optional 500
Sheet Feeder defective.
1. CN101 is disconnected.
2. CST3 PCB defective.
1. LPC PCB defective.
187
Cause