کو نیکا مینو لتا di152f

کو نیکا مینو لتا di152f

C0000    Main Motor malfunction
• The Main Motor (M1) Lock signal remains HIGH for a continuous 1-sec     copyir.com period at any time 1 sec     copyir.com after the Main Motor has started turning     copyir.com    1 Main Motor (M1) turns when the Start key is pressed     copyir.com NO • Check for overload     copyir.com 2 The following voltage is supplied to the Main Motor (M1) when the Start key is pressed     copyir.com Check voltage across a Master Board (copier: PWB-A) pin and GND when the Start key is pressed     copyir.com • Voltage across PJ7A-6 and GND DC5 V when Main Motor (M1) is in standby state DC0 V when Main Motor (M1) is energized • Voltage across PJ7A-5 and GND DC5 V when Main Motor (M1) is in standby state DC0 V when Main Motor (M1) is energized NO • Change Main Motor (M1)     copyir.com YES • Change Master Board (copier: PWB-A)     copyir.com
C0045    Fusing Cooling Fan Motor malfunction
• The Fusing Cooling Fan Motor (M3) Lock signal remains HIGH for a continuous 1-sec     copyir.com period while the Fusing Cooling Fan Motor is turning at full speed or decelerated speed     copyir.com    1 Fusing Cooling Fan Motor (M3) turns when the Power Switch is turned ON     copyir.com NO • Check for overload     copyir.com 2 The following voltage is supplied to the Fusing Cooling Fan Motor (M3)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON     copyir.com • Voltage across PJ10A-4 and GND DC8 V during rotation at decelerated speed DC24 V during rotation at full speed YES • Change Fusing Cooling Fan Motor (M3)     copyir.com 3 The following voltage is supplied to the Fusing Cooling Fan Motor (M3)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON     copyir.com • Voltage across PJ10A-6 and GND DC0 V when energized NO • Change Fusing Cooling Fan Motor (M3)     copyir.com YES • Change Master Board (copier: PWB-A)     copyir.com
C004E    Power Supply Cooling Fan Motor malfunction
• The Power Supply Cooling Fan Motor (M4) Lock signal remains HIGH for a continuous 1-sec     copyir.com period while the Power Supply Cooling Fan Motor Remote signal remains ON (for full-speed rotation) or OFF (for decelerated-speed rotation)     copyir.com    1 Power Supply Cooling Fan Motor (M4) turns when the Power Switch is turned ON     copyir.com NO • Check for overload     copyir.com 2 The following voltage is supplied to the Power Supply Cooling Fan Motor (M4)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON     copyir.com • Voltage across PJ19A-1 and GND DC8 V during rotation at decelerated speed DC24 V during rotation at full speed YES • Change Power Supply Cooling Fan Motor (M4)     copyir.com 3 The following voltage is supplied to the Power Supply Cooling Fan Motor (M4)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON     copyir.com • Voltage across PJ19A-3 and GND DC0 V when energized NO • Change Power Supply Cooling Fan Motor (M4)     copyir.com YES • Change Master Board (copier: PWB-A)     copyir.com
C0070    Toner Replenishing Motor malfunction
• The Toner Bottle Home Position Sensor (PC7) outputs a HIGH signal for a continuous 3     copyir.com5-sec     copyir.com period while the Toner Bottle is turning     copyir.com • The Toner Bottle Home Position Sensor (PC7) outputs a LOW signal for a continuous 2-sec     copyir.com period while the Toner Bottle is turning     copyir.com    1 The coupling of the Toner Hopper turns as the Toner Replenishing Motor (M6) turns     copyir.com <Check Procedure> • Disengage the Toner Bottle Release Lever     copyir.com • Turn the Toner Bottle a half turn by hand     copyir.com • Turn ON the Power Switch     copyir.com NO • Check for overload     copyir.com 2 The Toner Bottle Home Position Sensor (PC7) is operational     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Toner Replenishing Motor (M6) turns     copyir.com • Voltage across PJ19A-10 and GND DC0 V when unblocked DC5 V when blocked NO • Change Toner Bottle Home Position Sensor (PC7)     copyir.com 3 The following voltage is supplied to the Toner Replenishing Motor (M6)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Toner Replenishing Motor (M6) turns     copyir.com • Voltage across PJ19A-6 and GND DC0 V when deenergized DC24 V when energized YES • Change Toner Replenishing Motor (M6)     copyir.com NO • Change Master Board (copier: PWB-A)     copyir.com
C0210    Abnormal image transfer voltage
• The image transfer voltage remains more than 100 V for a continuous given period of time while the PC Drum remains stationary     copyir.com    1 • C0210 reappears when the Power Switch is turned OFF and ON     copyir.com YES • Change High Voltage Unit (HV1)     copyir.com • Change Master Board (PWB-A)     copyir.com
C03FF    Improperly set Adjust Mode 11
• An incorrect setting is made of Adjust 11     copyir.com
C0500    Warm-up failure
• It takes the surface temperature of the Left Fusing Roller more than 35 sec     copyir.com to reach 100 °C since the start of a warm-up cycle     copyir.com • It takes the surface temperature of the Left Fusing Roller more than 25 sec     copyir.com to reach 140 °C after it has reached 100 °C     copyir.com • It takes more than 20 sec     copyir.com for the warm-up cycle to be completed after the surface temperature of the Left Fusing Roller has reached 140 °C     copyir.com    1 • Fusing Heater Lamp (H1) turns ON     copyir.com YES • Go to step 3     copyir.com NO • Go to step 2     copyir.com 2 Fusing Heater Lamp (H1) is open-circuited     copyir.com <Check Procedure> Check the resistance across both ends of the Fusing Heater Lamp (H1)     copyir.com The Fusing Heater Lamp is open-circuited if the resistance is infinity     copyir.com YES • Change Fusing Heater Lamp (H1)     copyir.com 3 Thermoswitch 1 (TS1) is operational     copyir.com <Check Procedure> Check the resistance across both ends of the Thermoswitch 1 (TS1)     copyir.com The Thermoswitch 1 is open-circuited if the resistance is infinity     copyir.com NO • Change Thermoswitch 1 (TS1)     copyir.com 4 Fusing Unit Interlock Switch (S2) is operational     copyir.com <Check Procedure> Check continuity across terminals when the Fusing Unit Interlock Switch (S2) is turned ON     copyir.com • Across S2-1A and S2-1B • Across S2-2A and S2-2B NO • Change Fusing Unit Interlock Switch (S2)     copyir.com YES • Change DC Power Supply (PU1)     copyir.com 5 Thermistor (TH1) is open-circuited     copyir.com <Check Procedure> Check the resistance across CN15-2 and CN15-3 on the Fusing Unit side with CN15 disconnected     copyir.com The Thermistor is open-circuited if the resistance is infinity     copyir.com YES • Change Thermistor (TH1)     copyir.com 6 The following voltages are supplied from the Master Board (copier: PWBA)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON     copyir.com • Voltage across PJ10A-7 and GND DC24 V when Fusing Heater Lamp (H1) is OFF DC0 V when Fusing Heater Lamp (H1) is ON • Voltage across PJ10A-10 and GND DC24 V when Fusing Heater Lamp (H1) is OFF DC0 V when Fusing Heater Lamp (H1) is ON NO • Change Master Board (copier: PWB-A)     copyir.com
C0510    Abnormally low fusing temperature
• The surface temperature of the Left Fusing Roller remains lower than 120 °C for a given period of time while the copier is in a standby state     copyir.com • The surface temperature of the Left Fusing Roller remains lower than 120 °C for a given period of time during a print cycle     copyir.com    1 • Fusing Heater Lamp (H1) turns ON     copyir.com YES • Go to step 3     copyir.com NO • Go to step 2     copyir.com 2 Fusing Heater Lamp (H1) is open-circuited     copyir.com <Check Procedure> Check the resistance across both ends of the Fusing Heater Lamp (H1)     copyir.com The Fusing Heater Lamp is open-circuited if the resistance is infinity     copyir.com YES • Change Fusing Heater Lamp (H1)     copyir.com 3 Thermoswitch 1 (TS1) is operational     copyir.com <Check Procedure> Check the resistance across both ends of the Thermoswitch 1 (TS1)     copyir.com The Thermoswitch 1 is open-circuited if the resistance is infinity     copyir.com NO • Change Thermoswitch 1 (TS1)     copyir.com 4 Fusing Unit Interlock Switch (S2) is operational     copyir.com <Check Procedure> Check continuity across terminals when the Fusing Unit Interlock Switch (S2) is turned ON     copyir.com • Across S2-1A and S2-1B • Across S2-2A and S2-2B NO • Change Fusing Unit Interlock Switch (S2)     copyir.com YES • Change DC Power Supply (PU1)     copyir.com 5 Thermistor (TH1) is open-circuited     copyir.com <Check Procedure> Check the resistance across CN15-2 and CN15-3 on the Fusing Unit side with CN15 disconnected     copyir.com The Thermistor is open-circuited if the resistance is infinity     copyir.com YES • Change Thermistor (TH1)     copyir.com 6 The following voltages are supplied from the Master Board (copier: PWBA)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) pin and GND when the Power Switch is turned ON     copyir.com • Voltage across PJ10A-7 and GND DC24 V when Fusing Heater Lamp (H1) is OFF DC0 V when Fusing Heater Lamp (H1) is ON • Voltage across PJ10A-10 and GND DC24 V when Fusing Heater Lamp (H1) is OFF DC0 V when Fusing Heater Lamp (H1) is ON NO • Change Master Board (copier: PWB-A)     copyir.com
C0520    Abnormally high fusing temperature
The surface temperature of the Left Fusing Roller remains higher than 240 °C for a given period of time     copyir.com    1 Thermistor (TH1) is dirty     copyir.com YES • Clean Thermistor (TH1)     copyir.com 2 Thermistor (TH1) is open-circuited     copyir.com <Check Procedure> Check the resistance across CN15-2 and CN15-3 on the Fusing Unit side with CN15 disconnected     copyir.com The Thermistor is open-circuited if the resistance is infinity     copyir.com YES • Change Thermistor (TH1)     copyir.com NO • Change Master Board (copier: PWB-A)     copyir.com
C0650    Faulty Scanner Home Position Sensor
• The Scanner Home Position Sensor (PC6) does not go from HIGH to LOW when the Scanner Motor (M5) is energized for a given number of steps after the sequence to bring the Scanner back to its home position has been started at the end of a scan motion and during re-shading     copyir.com • The Scanner Home Position Sensor (PC6) does not go from LOW to HIGH when the Scanner Motor (M5) is energized for a given number of steps after a scan motion has been started at the end of a Scanner Home Position Sensor home check scan motion and during re-shading     copyir.com    1 Scanner Motor (M5) turns when the Power Switch is turned ON     copyir.com NO • Change Scanner Motor (M5)     copyir.com 2 Scanner moves smoothly     copyir.com <Check Procedure> Gently move the Scanner by hand to check for smooth operation     copyir.com NO • Remove foreign matter and other obstacle     copyir.com • Clean the Scanner rails     copyir.com • Clean or change the Scanner bushings     copyir.com • Reinstall Scanner     copyir.com 3 Scanner Home Position Sensor (PC6) is operational     copyir.com <Check Procedure> Check voltage across a Control Board (copier: PWB-C) pin and GND when the sensor is blocked     copyir.com • Voltage across PJ18C-2 and GND DC5 V when unblocked DC0 V when blocked NO • Change Scanner Home Position Sensor (PC6)     copyir.com YES • Change Control Board (PWB-C)     copyir.com
C0B60    Bin Switching Motor malfunction
If the Upper Home Position Sensor is LOW during an initial operation: • The Lower Home Position Sensor (PC33) is LOW when the Bin Switching Motor (M1) starts turning forward     copyir.com • If the Lower Home Position Sensor (PC33) does not go LOW at a time 2     copyir.com5 sec     copyir.com after the Bin Switching Motor (M1) has started turning forward, the Bin Switching Motor is kept deenergized for a given period of time and then energized again to turn backward     copyir.com The Upper Home Position Sensor (PC32) does not go LOW after the motor has started turning backward     copyir.com • The Upper Home Position Sensor (PC32) does not go HIGH at a time 1 sec     copyir.com after the Bin Switching Motor (M1) has started turning forward     copyir.com • When the Lower Home Position Sensor (PC33) goes LOW, the Bin Switching Motor (M1) starts turning backward     copyir.com The Upper Home Position Sensor (PC32) does not go LOW at a time 2     copyir.com5 sec     copyir.com after the motor has started turning backward     copyir.com • When the Lower Home Position Sensor (PC33) goes LOW, the Bin Switching Motor (M1) starts turning backward     copyir.com The Lower Home Position Sensor (PC33) does not go HIGH at a time 1 sec     copyir.com after the motor has started turning backward     copyir.com If the Lower Home Position Sensor is LOW during an initial operation: • The Upper Home Position Sensor (PC32) does not go LOW at a time 2     copyir.com5 sec     copyir.com after the Bin Switching Motor (M1) has started turning backward     copyir.com • The Lower Home Position Sensor (PC33) does not go HIGH at a time 1 sec     copyir.com after the Bin Switching Motor (M1) has started turning backward     copyir.com If both the Upper Home Position Sensor and the Lower Home Position Sensor are HIGH during an initial operation: • If the Lower Home Position Sensor (PC33) does not go LOW at a time 2     copyir.com5 sec     copyir.com after the Bin Switching Motor (M1) has started turning forward, the Bin Switching Motor is kept deenergized for a given period of time and then energized again to turn backward     copyir.com The Upper Home Position Sensor (PC32) does not go LOW after the motor has started turning backward     copyir.com • When the Lower Home Position Sensor (PC33) goes LOW, the Bin Switching Motor (M1) starts turning backward     copyir.com The Upper Home Position Sensor (PC32) does not go LOW at a time 2     copyir.com5 sec     copyir.com after the motor has started turning backward     copyir.com • When the Lower Home Position Sensor (PC33) goes LOW, the Bin Switching Motor (M1) starts turning backward     copyir.com The Lower Home Position Sensor (PC33) does not go HIGH at a time 1 sec     copyir.com after the motor has started turning backward     copyir.com    1 Bin Switching Motor (JS-202: M1) turns when the Power Switch is turned ON     copyir.com NO • Change Bin Switching Motor (JS- 202: M1)     copyir.com 2 Tray is moved as the Bin Switching Motor (JS-202: M1) operates     copyir.com NO • Reinstall motor unit     copyir.com 3 Upper Home Position Sensor (JS- 202: PC32) is operational     copyir.com <Check Procedure> Check voltage across a Main Board (JS-202: PWB-A) pin and GND when the sensor is blocked     copyir.com • Voltage across PJ4A-3 and GND DC0 V when unblocked DC5 V when blocked NO • Change Upper Home Position Sensor (PC32)     copyir.com 4 Lower Home Position Sensor (JS- 202: PC33) is operational     copyir.com <Check Procedure> Check voltage across a Main Board (JS-202: PWB-A) pin and GND when the sensor is blocked     copyir.com • Voltage across PJ4A-6 and GND DC0 V when unblocked DC5 V when blocked NO • Change Lower Home Position Sensor (PC33)     copyir.com YES • Change Master Board (copier: PWB-A)     copyir.com
C0B80    Shift Motor malfunction
• The Home Sensor (S31) is LOW at a timing immediately before the Shift Motor (M1) starts turning backward     copyir.com • The Home Sensor (S31) is LOW after the lapse of a given period of time after the Shift Motor (M1) has started turning backward     copyir.com    1 Shift Motor (OT-103: M1) turns when the Power Switch is turned ON     copyir.com NO • Change Shift Motor (OT-103: M1)     copyir.com 2 Exit Roller operates as the Shift Motor (OT-103: M1) is energized     copyir.com NO • Reinstall motor unit     copyir.com 3 Home Sensor (OT-103: S31) is operational     copyir.com <Check Procedure> Check voltage across a Main Board (OT-103: PWB-A) pin and GND when the sensor is blocked     copyir.com • Voltage across PJ3A-3 and GND DC5 V when blocked DC0 V when unblocked NO • Change Home Sensor (OT-103: S31)     copyir.com YES • Change Master Board (copier: PWB-A)     copyir.com
C0F32    Faulty ATDC Sensor
• The measurement taken by the ATDC Sensor (UN1) at a time 2     copyir.com5 sec     copyir.com after the Main Motor (M1) has started turning is less than 3 % (greater than 4     copyir.com98 V)     copyir.com • The measurement taken by the ATDC Sensor (UN1) at a time 2     copyir.com5 sec     copyir.com after the Main Motor (M1) has started turning is 19 % or more (1     copyir.com41 V or less)     copyir.com    1 Developer is not even in the Developer Mixing Chamber     copyir.com YES • Gently swing the IU in the horizontal direction to even out developer in the Developer Mixing Chamber     copyir.com 2 ATDC Sensor (UN1) is dirty with foreign matter (such as paper dust) other than developer     copyir.com YES • Clean ATDC Sensor (UN1)     copyir.com 3 Foreign matter (such as paper dust) is trapped in the Developer Mixing Chamber     copyir.com YES • Remove foreign matter from the Developer Mixing Chamber     copyir.com 4 The following voltages are supplied from the Master Board (copier: PWBA)     copyir.com <Check Procedure> Check voltage across a Master Board pin and GND when the Power Switch is turned ON     copyir.com • DC5     copyir.com39 V to 8     copyir.com15 V across PJ7A-8 and GND • DC1     copyir.com41 V to 4     copyir.com98 V across PJ7A- 10 and GND YES • Change ATDC Sensor (UN1) and developer     copyir.com NO • Change Master Board (copier: PWB-A)     copyir.com
C0F33    Improperly adjusted ATDC Sensor
• The adjustment of the ATDC control voltage is not completed within 1 sec     copyir.com after sampling has started of the ATDC Sensor (UN1) as part of an operation of ATDC Sensor Automatic Adjustment     copyir.com • The ATDC Sensor control voltage falls outside the range of 5     copyir.com39 V to 8     copyir.com15 V during an operation of ATDC Sensor Automatic Adjustment     copyir.com    1 Developer is not even in the Developer Mixing Chamber     copyir.com YES • Gently swing the IU in the horizontal direction to even out developer in the Developer Mixing Chamber     copyir.com 2 ATDC Sensor (UN1) is dirty with foreign matter (such as paper dust) other than developer     copyir.com YES • Clean ATDC Sensor (UN1)     copyir.com 3 Foreign matter (such as paper dust) is trapped in the Developer Mixing Chamber     copyir.com YES • Remove foreign matter from the Developer Mixing Chamber     copyir.com 4 The following voltages are supplied from the Master Board (copier: PWBA)     copyir.com <Check Procedure> Check voltage across a Master Board pin and GND when the Power Switch is turned ON     copyir.com • DC5     copyir.com39 V to 8     copyir.com15 V across PJ7A-8 and GND • DC1     copyir.com41 V to 4     copyir.com98 V across PJ7A- 10 and GND YES • Change ATDC Sensor (UN1) and developer     copyir.com NO • Change Master Board (copier: PWB-A)     copyir.com
C1038    Engine connection failure
Master Board (PWB-A) to Control Board (PWB-C) connection failure • There is no acknowledge signal transmitted from the Master Board (PWB-A) to Control Board (PWB-C) for 1     copyir.com5 sec     copyir.com or more     copyir.com • An error command signal is transmitted from the Control Board (PWB-C) to Master Board (PWB-A)     copyir.com • An error status signal is transmitted from the Master Board (PWB-A) to Control Board (PWB-C)     copyir.com    1 C1038 reappears when the copier is turned OFF and ON again     copyir.com <Check Procedure> Turn OFF and ON the Power Switch to check to see if C1038 reappears     copyir.com YES • Go to step 2     copyir.com 2 The connection between Master Board (copier: PWB-A) and Control Board (copier: PWB-C) is loose     copyir.com YES • Make good connection between Master Board (copier: PWB-A) and Control Board (copier: PWB-C)     copyir.com NO • Change Control Board (copier: PWB-C)     copyir.com • Change Master Board (copier: PWB-A)     copyir.com
C1200    Faulty ASIC/memory
ASIC/memory (for image and control) fault • A write or read error occurs with SRAM on the Control Board (PWB-C)     copyir.com    1 C1200 reappears when the copier is turned OFF and ON again     copyir.com <Check Procedure> Turn OFF and ON the Power Switch to check to see if C1200 reappears     copyir.com YES • Go to step 2     copyir.com 2 Memory (U8) on Control Board (copier: PWB-C) is loose     copyir.com YES • Reinstall memory (U8)     copyir.com NO • Change Control Board (copier: PWB-C)     copyir.com
C1300    Polygon Motor malfunction
Startup failure • A LOW Polygon Motor (M2) Lock signal is not detected within a given period of time that begins 1 sec     copyir.com after the Polygon Motor has started turning     copyir.com Lock signal fault: Unstable after the first Lock signal has been detected • For a period of 1 sec     copyir.com after the first LOW Polygon Motor (M2) Lock signal (first Lock) has been detected, the next LOW Polygon Motor Lock signal is not detected     copyir.com Lock signal fault: Lock signal out-of-timing • A LOW Polygon Motor (M2) Lock signal is not detected for a continuous given period of time while the rotation of the Polygon Motor remains stabilized     copyir.com Faulty Lock signal • A LOW Polygon Motor (M2) Lock signal is detected for a given period of time or more when the Polygon Motor remains deenergized     copyir.com    1 C1300/C13F0 reappears when the copier is turned OFF and ON again     copyir.com <Check Procedure> Turn OFF and ON the Power Switch to check to see if C1300/C13F0 reappears     copyir.com YES • Go to step 2     copyir.com 2 Polygon Motor (M2) connector PJ13A is loose     copyir.com YES • Reconnect connector PJ13A     copyir.com 3 The following voltage is supplied to the Polygon Motor (M2)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) and GND when the Start key is pressed     copyir.com • Voltage across PJ13A-3 and GND DC5 V while Polygon Motor (M2) is in standby state DC0 V when Polygon Motor (M2) is energized YES • Change PH Unit     copyir.com NO • Change Master Board (copier: PWB-A)     copyir.com
C13F0    Faulty HSYNC
Laser scanning system malfunction • The SOS Sensor does not detect a rising edge of SOS within a given period of time after the Polygon Motor (M2) has started turning and a laser output has been started     copyir.com • The SOS Sensor detects no rising edges of SOS while VIA (image area control) is ON     copyir.com    1 C1300/C13F0 reappears when the copier is turned OFF and ON again     copyir.com <Check Procedure> Turn OFF and ON the Power Switch to check to see if C1300/C13F0 reappears     copyir.com YES • Go to step 2     copyir.com 2 Polygon Motor (M2) connector PJ13A is loose     copyir.com YES • Reconnect connector PJ13A     copyir.com 3 The following voltage is supplied to the Polygon Motor (M2)     copyir.com <Check Procedure> Check voltage across a Master Board (copier: PWB-A) and GND when the Start key is pressed     copyir.com • Voltage across PJ13A-3 and GND DC5 V while Polygon Motor (M2) is in standby state DC0 V when Polygon Motor (M2) is energized YES • Change PH Unit     copyir.com NO • Change Master Board (copier: PWB-A)     copyir.com
C1468    Faulty EEPROM
EEPROM fault • Data cannot be written in EEPROM     copyir.com • Data stored in EEPROM is wrong     copyir.com    1 C1468 reappears when the copier is turned OFF and ON again     copyir.com <Check Procedure> Turn OFF and ON the Power Switch to check to see if C1468 reappears     copyir.com YES • Go to step 2     copyir.com 2 Memory (U29) on Control Board (copier: PWB-C) is loose     copyir.com YES • Reinstall memory (U29)     copyir.com NO • Change Control Board (copier: PWB-C)     copyir.com
C14A3    IR fluorescent lamp fault
The Exposure Lamp (LA2) of the Scanner fails to turn ON     copyir.com • The intensity of the Exposure Lamp is a predetermined value or less during shading and re-shading     copyir.com    1 Exposure Lamp turns ON when the Power Switch is turned ON     copyir.com NO • Go to step 3     copyir.com 2 Exposure Lamp is abnormally lit (flickers or abnormally dark) when the Power Switch is turned ON     copyir.com NO • Go to step 4     copyir.com 3 Inverter Board (copier: PU2) connector is loose     copyir.com YES • Reconnect     copyir.com NO • Change Exposure Lamp (LA2)     copyir.com 4 CCD Board (copier: PWB-J) connector is loose     copyir.com YES • Reconnect     copyir.com 5 The following voltage is supplied from the Control Board (copier: PWB-C)     copyir.com <Check Procedure> Check voltage across a Control Board (copier: PWB-C) pin and GND when the Power Switch is turned ON     copyir.com • Voltage across JP16C-4 and GND DC24 V when Exposure Lamp (LA2) is OFF DC0 V when Exposure Lamp (LA2) is ON YES • Change Inverter Board (PU2)     copyir.com NO • Change Control Board (copier: PWB-C)