Description: Yellow IU EEPROM failure
EEPROM access error: When EEPROM access control is executed, setting 1 “Start Flag” of GA register does not become ready even after the lapse of a predetermined period of time.
Remedy: 1 Imaging Unit is installed properly. NO: Reinstall. 2 Connector between the Imaging Unit and copier is dirty. YES: Clean. 3 The problem has been eliminated through the checks of steps up to 2. NO: Change Imaging Unit. 4 The problem is eliminated after the Imaging Unit has been replaced. NO: Change Master Board.
Code: C13D4
Description: Black IU EEPROM failure
EEPROM access error: When EEPROM access control is executed, setting 1 “Start Flag” of GA register does not become ready even after the lapse of a predetermined period of time.
Remedy: 1 Imaging Unit is installed properly. NO: Reinstall. 2 Connector between the Imaging Unit and copier is dirty. YES: Clean. 3 The problem has been eliminated through the checks of steps up to 2. NO: Change Imaging Unit. 4 The problem is eliminated after the Imaging Unit has been replaced. NO: Change Master Board.
Code: C3310
Description: CCD clamp/gain adjustment failure
• When clamp adjustment is made: (AVE1 -AVE2) =< 4 • When gain adjustment is made: The average of CCD Sensor output values is 1 or less. Dgain = 0 Dgain = 255
Remedy: 1 Check that each of the values displayed on the screen falls within the above range. 2 There is a wide difference between the clamp and gain adjustment values, the value being close to “0” or “255.” YES: Make positive connection of the harness connectors between CCD Sensor Board and Image Processing Board. 3 Clamp adjustment value exceeds the allowable range. YES: Reinstall covers, as extraneous light is the cause of the problem. 4 The lamp adjustment value or gain value exceeds the upper limit of the allowable range, being abnormally great. YES: Clean lens, mirrors, CCD surface, shading sheet, and related parts. 5 The lamp adjustment value or gain value falls short of the lower limit of the allowable range, being abnormally small. YES: Reinstall covers, as extraneous light is the cause of the problem. Change Scanner, as the reflectors are deformed.
Code: C3700
Description: IR Cooling Fan Motor 1 turning at abnormal timing
A Lock signal is detected ten consecutive times when it is monitored at 0.01-sec. intervals while a Fan Motor ON signal is being output and, at the same time, after the lapse of 2 sec. or more after the output of the Fan Motor ON signal has been started.
Remedy: 1 IR Cooling Fan Motor 1 rotation: the voltage across PJ6C-6 on Image Processing Board and GND remains DC 0 V while the motor is turning. YES: Change Image Processing Board. NO: Change motor. Master Board
Code: C3710
Description: IR Cooling Fan Motor 2 turning at abnormal timing
A Lock signal is detected ten consecutive times when it is monitored at 0.01-sec. intervals while a Fan Motor ON signal is being output and, at the same time, after the lapse of 2 sec. or more after the output of the Fan Motor ON signal has been started.
Remedy: 1 IR Cooling Fan Motor 2 rotation: the voltage across PJ6C-9 on Image Processing Board and GND remains DC 0 V while the motor is turning. YES: Change Image Processing Board. NO: Change motor. Master Board
Code: C3720
Description: Original Glass Cooling Fan Motor turning at abnormal timing
A Lock signal is detected ten consecutive times when it is monitored at 0.01-sec. intervals while a Fan Motor ON signal is being output and, at the same time, after the lapse of 2 sec. or more after the output of the Fan Motor ON signal has been started.
Remedy: 1 Original Glass Cooling Fan Motor rotation: the voltage across PJ2C-6B on Image Processing Board and GND remains DC 0 V while the motor is turning. YES: Change Image Processing Board. NO: Change motor.Bo