Kyocera KM-1500 Service Manual page 78

2DC-2
Code
C7800 Broken external temperature ther-
(A7800*) mistor
• The input voltage is 0.5 V or less.
C7810 Short-circuited external temperature
(A7810*) thermistor
• The input voltage is 4.5 V or more.
C7980 Waste toner reservoir overflow
problem (when the total number of
copies is less than 100 thousand
sheets)
• After E31 is displayed, 1,000 sheets
are copied. Or waste toner exceeds
5 g.
C7990 Waste toner reservoir overflow
problem (when the total number of
copies is 100 thousand sheets or
more)
• After E31 is displayed, 1,000 sheets
are copied. Or waste toner exceeds
5 g.
"A" is displayed on the market.
1-5-12
Contents
Causes Check procedures/corrective measures
Poor contact in Reinsert the connector. Also check for con-
the operation tinuity within the connector cable. If none,
board connector remedy or replace the cable.
terminals.
Defective external Replace the operation board and check for
temperature ther- correct operation.
mistor.
Poor contact in Reinsert the connector. Also check for con-
the operation tinuity within the connector cable. If none,
board connector remedy or replace the cable.
terminals.
Defective external Replace the operation board and check for
temperature ther- correct operation.
mistor.
Defective waste Shake the process unit from side to side
toner sensor or and turn the power switch off and then on.
engine board (KP- If the problem cannot be solved, replace
5061). the process unit.
After replacing the process unit, turn the
power switch off and then on. If the prob-
lem cannot be solved, replace the waste
toner sensor or the engine board (KP-
5061).
Defective waste Shake the process unit from side to side
toner sensor or and turn the power switch off and then on.
engine board (KP- If the problem cannot be solved, replace
5061). the process unit.
After replacing the process unit, turn the
power switch off and then on. If the prob-
lem cannot be solved, replace the waste
toner sensor or the engine board (KP-
5061).
Remarks