Xerox 8500DN Service Manual - Page 96

Error Messages and Codes 13,067.43: The Drum Temperature Sensor circuit is open. 13,069.45: The Drum Temperature Sensor circuit is shorted. 13,071.47: The Drum Temperature Sensor returned a bad reading, or the reading was corrupted by ESD (Electrostatic Discharge). Troubleshooting Procedure for 13,067 to 13,071 Error Code (Drum Thermistor) Step Questions and Actions Yes No 1 Using Service Diagnostics, run the Drum Temperature Sensor test. Did the test pass? Go to Step 2. Replace the Drum Temperature Sensor. 2 Inspect the sensor wiring harness. Replace the Replace the Is the wiring free from defects? Is the wiring Drum sensor correctly routed through the pass-thru and Temperature harness. not pinched against the Drum? Sensor. 13,072.48: The Preheater got too hot. 13,074.41: The Preheater took too long to reach its setpoint. 13,131.44: The Preheater thermistor circuit is open. 13,133.46: The Preheater thermistor circuit is shorted. 13,135.48: The Preheater thermistor returned a bad reading, or the reading was corrupted by ESD. Troubleshooting Procedure for 13,072 to 13,135 Error Code (Preheater) Step Questions and Actions Yes 1 Check that the ambient room temperature is Advise within specifications (see "Environmental customer. Specifications" on page 1-12). Is the room too cold or too hot? 2 Run the Preheater test. Did the test pass? Replace the I/O Board. 3 Check the wiring from the Preheater. Is the wiring connected and intact? Replace the Preheater. No Go to Step 2. Go to Step 3. Replace the harness. 13,136.49: The Printhead left jetstack heater is too hot. 13,138.42: The Printhead left jetstack heater took too long to reach its setpoint. 13,195.45: The Printhead left jetstack thermistor circuit is open. 13,197.47: The Printhead left jetstack thermistor circuit is shorted. 13,199.49: The Printhead left jetstack thermistor returned a bad reading, or the reading was corrupted by ESD. 3-28 Phaser 8400/8500/8550/8560 Color Printer Service Manual