Kyocera FS-1128MFP Service Manual - Page 128
Control PWB - Operation panel PWB, panel PWB YC1 - waste toner
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2JN Code 6030 6400 7990 F000 Contents Causes Remarks Check procedures/corrective measures Broken fuser thermistor wire Input from fuser thermistor is 0 (A/D value). Poor contact in the fuser thermistor connector terminals. Reinsert the connector (See page 1-5-34). Broken fuser ther- Replace the fuser unit (See page 1-5-34). mistor wire. Fuser thermistor installed incorrectly. Replace the fuser unit (See page 1-5-34). Fuser thermal cut- Replace the fuser unit (See page 1-5-34). out triggered. Fuser heater lamp Replace the fuser unit (See page 1-5-34). installed incorrectly. Broken fuser Replace the fuser unit (See page 1-5-34). heater lamp wire. Zero cross signal error The zero cross signal does not reach the control PWB for specified time. Defective harness between high voltage PWB (YC202) and control PWB (YC23), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness (See page 15-39). Defective connection between power source PWB (YC103) and high voltage PWB (YC201). Reinsert the connector. Defective power source PWB. Replace the power source PWB (See page 1-5-42). Defective control PWB. Replace the control PWB (See page 1-539). Waste toner full The waste toner sensor has detected that the waste toner reservoir (drum unit) is full. Waste toner reservoir (drum unit) is full. Defective waste toner sensor. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace the drum unit (See page 1-5-30). Replace the waste toner sensor. Defective control PWB. Replace the control PWB (See page 1-539). Control PWB - Operation panel PWB communication error Defective harness between operation panel PWB (YC1) and control PWB (YC7), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness. Defective operation panel PWB. Replace the operation panel PWB. Defective control PWB. Replace the control PWB (See page 1-539). 1-4-10