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RESET E#5Môû maùy , gaït DIP Switch 101-1 treân MainBoard töø Off --> On --> Off , taét roàimôû coâng taéc chính .

SERVICE CALL CONDITION

CODE #11 — EXPOSURE LAMP ERROR- Definition -• The feedback signal becomes higher than 4.2 volts (r.m.s.) for 1.0second when the exposure lamp is on.• The feedback signal becomes higher than 1.0 volt (r.m.s.) for 1.0 secondwhen the exposure lamp is off.- Possible Causes -• Exposure lamp open • Thermoswitch open • AC drive board defective• Main board defective • DC harness defectiveCODE #12 — EXPOSURE LAMP ERROR- Definition -• The feedback signal falls below 0.5 volt (r.m.s.) for 1.0 second when theexposure lamp is on.• The exposure stays on for longer than 10 seconds.- Possible Causes -• AC drive board defective • Main board defective • DC harness defectiveCODE #13 — ZERO CROSS SIGNAL ERROR- Definition -The CPU does not receive the zero cross signal within 0.56 second.- Possible Causes -• Main board defective • DC power supply board • Zero cross line openCODE #21 — SCANNER HOME POSITION ERROR- Definition -The scanner home position sensor remains off (LOW) 8 seconds after themain switch is turned on.- Possible Causes -• Scanner home position sensor short • Scanner motor defect• Main board defect • DC power supply unit defectCODE #22 — SCANNER HOME POSITION ERROR- Definition -The scanner home position sensor remains on (HIGH) 1.0 second after the scanner starts.- Possible Causes -• Scanner home position sensor circuit open • Scanner motor defective• Main Motor defective • DC power supply unit defectiveCODE #28 — LENS HOME POSITION ERROR- Definition -The lens home position sensor remains off (LOW) 3.5 seconds after thelens moves to the home position.- Possible Causes -•

Lens home position sensor short•

Lens drive motor defect• Main board defect

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CODE #29 — LENS HOME POSITION ERROR- Definition -The lens home position sensor is still on (HIGH) 3.5 seconds after the lensleaves the home position.- Possible Causes -• Lens home position sensor open • Lens drive motor defective• Main board defectiveCODE #2A — 4TH/5TH MIRROR HOME POSITION ERROR- Definition -The 4th/5th mirror home position sensor is still off (LOW) 2.5 seconds after the 4th/5th mirror assembly moves to the home position.- Possible Causes -• 4th/5th mirror home position sensor short • 4th/5th mirror motor defect• Main board defectCODE #2B — 4TH/5TH MIRROR HOME POSITION ERROR- Definition -The 4th/5th mirror home position sensor is still on (HIGH) 2.5 secondsafter the 4th/5th mirror assembly leaves the home position.- Possible Causes -• 4th/5th mirror home position sensor open • 4th/5th mirror motor defective• Main board defectiveCODE #52 — FUSING WARM-UP ERROR- Definition -The temperature detected by the thermistor does not reach 175oC within100 seconds after the main switch is turned on.- Possible Causes -• Thermistor position error • Fusing lamp open • Thermofuse open• AC drive board defective • Main board defectiveCODE #53 — FUSING OVERHEAT- Definition -The thermistor detects a temperature higher than 240oC.- Possible Causes -• Thermistor short • AC drive board defect • Main board defectCODE #55 — FUSING THERMISTOR OPEN- Definition -The thermistor does not detect 2oC within 30 seconds after the mainswitch is turned on.

- Possible Causes -• Thermistor open • Main board defective• Fusing lamp open • Thermofuse openE70 (IN THE MAGNIFICATION INDICATOR)— TONER OVERFLOW SENSOR ON- Definition -Toner overflow sensor turns on- Possible Causes -• Toner overflow • Toner overflow sensor open • Main board defectiveCODE #80 — DUPLEX AND COPIER BOARD COMMUNICATIONERROR

- Definition -The copier main board does not receive any signal from the duplex mainboard.

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- Possible Causes -• Interface board defective • Copier main board defective• Duplex main board defective • Optional dc power supply unit defective• 2nd paper size switches shortedCODE #81 — INTERFACE BOARD ERROR

- Definition -The interface board is not connected when the duplex unit is installed.- Possible Causes -• Interface board installed incorrectly • Interface board defective• Main board defective • 2nd paper size switch shortedCODE #82 — JOGGER HOME POSITION ERROR- Definition -The output of the jogger home position sensor stays LOW while the duplexmain board is driving the jogger fences outward.- Possible Causes -• Jogger home position sensor shorted • Jogger motor defective• Duplex main board defective • Copier main board defective• Interface board defectiveCODE #83 — JOGGER HOME POSITION ERROR- Definition -The output of the jogger home position sensor remains HIGH as theduplex main board is driving the jogger fences inward.- Possible Causes -• Jogger home position sensor open • Jogger motor defective• Duplex main board defective • Copier main board defective• Interface board defectiveABNORMAL CONDITION IN TONER DENSITY DETECTION- Symptom -The Auto ID indicator or the selected manual ID level blinks. (No SC Codeis indicated.)- Definition -If the Vsg goes below 2.5 volts or Vsp goes above 7.5 volts 5 times in arow.- Possible Causes -• Incorrect Vsg voltage • Dirty ID sensor • Low toner density• ID sensor defect • Main board defect