E020-Xx81: Generally E020-0181 Error Code - Canon iR C3200 Series Service Manual

Detail
xx81
xxA0
xxB0
xxC0
xxD0

16.3.10.18 E020-xx81: generally E020-0181 Error Code

Symptom
E020-xx81: generally E020-0181 Error Code
Description
This error code is displayed when the coefficient of the SALT sensor contamination becomes lower than the
specified value; 70 or less in service mode [COPIER>Display>DENS>WINDOW-Y/M/C/K].
Cause
1. E020-0181: Since the service case storing the service book is not installed inside the front door, the SALT
sensor shutter is not opened. Consequently, the SALT sensor is unable to measure the density of sample patches
formed by the ATR control on the transfer belt.
2. E020-xx81: Since the SALT sensor is soiled, it is unable to precisely measure the density of sample patches
formed by the ATR control.
Description
The actual value is considerably high
in relation to the ITB surface
reflectance when a new drum is fitted.
The measured value of the developer
concentration is considerably low.
The ATR sensor is faulty. The SALT
sensor is faulty. The ITB is soiled.
The drum unit is approaching the end
of its life and is causing the T/D ratio
to drop. The ATR sensor has an open
circuit.
The supply of toner for the toner
container to the developing assembly
is faulty. The developing assembly is
supplied with toner excessively. The
ATR sensor has an open circuit.
The supply of toner for the toner
container to the developing assembly
has failed. The toner cartridge motor
fails to rotate. The toner container is
empty. The toner supply mouth of the
drum unit is damaged. The ATR
sensor has an open circuit.
Timing of detection
The fault occurs while ATR control is
being executed.
The fault occurs when an image is
being formed. It is detected when toner
supply operation is started.
The fault occurs when an image is
being formed. It is detected when toner
supply operation is started.
The fault occurs when an image is
being formed.
The fault occurs when an image is
being formed and, in addition, when the
T/D ratio drops while 20 prints are
being made continuously. It is detected
when toner supply operation is started.
Chapter 16
0002-1894
16-131