Canon iR C6800 Series Service Manual page 1007

Code Detail
xx91 The result (Sig D) of computation based on the reading of the patch during patch
detection (analog) is 1008 or higher.
The patch sensor is damaged or has an open circuit. The connector has poor contact. The
primary transfer pressure is faulty. The mounting of the developing assembly is faulty.
xx92 The value delta D obtained from the result (Sig D) of computation based on the reading
of the patch during patch detection is 5.0% or more 3 times continuously.
The patch sensor may be damaged or has an open circuit. The connector has poor
contact. The primary transfer engagement is faulty. The mounting of the developing
assembly is faulty. The amount of supply is low.
xx93 The value delta D obtained from the result (Sig D) of computation based on the reading
of the patch during patch detection is +5.0% or lower 3 times continuously.
The patch sensor is damaged or has an open circuit. The connector has poor contact. The
primary transfer pressure is faulty. The mounting of the developing assembly is faulty.
The amount of supply is low.
xxA0 For ATR control, the Sig value is lower than 62.
The ATR sensor is damaged or has an open circuit. The connector has poor contact.
xxA1 For ATR control, the Ref value is lower than 62.
The ATR sensor is damaged or has an open circuit. The connector has poor contact.
xxA2 For ATR control, the Sig value is 960 or higher.
The ATR sensor is damaged or has an open circuit. The connector has poor contact. The
opening/closing of the shutter is faulty.
xxA3 For ATR control, the Ref value is 960 or higher.
The ATR sensor is damaged or has an open circuit. The connector has poor contact.
xxA8 The T/D ratio identified for ATR control has exceeded the upper limit (12%) 3 times
continuously.
The ATR sensor is damaged or has an open circuit. The connector has poor contact. The
amount of supply is too high.
xxA9 The T/D ratio identified for ATR control has exceeded the lower limit (3%) 3 times
continuously.
The ATR sensor is damaged or has an open circuit. The connector has poor contact. The
amount of supply is too low.
xxC0 The variation among the 8 samplings of the light Sig value is 100 or higher.
The ATR sensor is damaged or has an open circuit. The connector has poor contact. The
stirring of toner is faulty.
xxC1 The variation among the 8 samplings of the light Ref value is 100 or higher.
The ATR sensor is damaged or has an open circuit. The connector has poor contact.
xxC2 The variation among the 8 samplings of the patch Sig value is 400 or higher.
The patch sensor is damaged or has an open circuit. The connector has poor contact. The
primary transfer engagement is faulty.
Cause/Particulars of detection
Chapter 14
Remarks
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
Turn off and then on the main
power; then, execute the
intermediate transfer belt.
14-23