Panasonic UF-580 Service Manual page 155

Error
Description of Problems
Code
64 Unit detected "No Cassette".
65 Unit detected "Out of Paper".
81 No response from LP Controller.
82 Illegal response from LP Controller.
Note:
If an 021 series Error Code occurs, 021-25 (Thermistor Open) or 021-26 (Thermistor detected
temperature over 392°F (200°C), a pre-programmed recovery safety software is activated to protect the
unit and the service personnel during abnormal increase in temperature.
Once activated, this program 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 Service Mode 7-1-2 (Section 5.1.7.) and Power OFF/ON.
2) Replace the Thermistor or Fuser Unit. If the problem persists.
3) Replace the SC PCB.
1. Cassette not installed or partially open.
2. Cassette Sensor defective.
1. The Paper Cassette is empty.
2. Paper Detect Sensor defective.
1. SC PCB defective.
1. SC PCB defective.
155
Cause