Ricoh FT5535 Service Manual page 524

PROCESS CONTROL
6.4 TONER SUPPLY IN ABNORMAL SENSOR CONDITIONS
If any sensor errors occur under detect supply mode, toner supply mode is
changed automatically as shown below.
Error Abnormal Condition
ID Sensor When ID sensor output
Adjustment Error cannot be adjusted to
4.0 ± 0.2 V
Abnormal ID Sensor If V
(V ) V
SP SP
Abnormal ID Sensor If V
(V ) V
SG SG
TD Sensor When TD sensor
Adjustment Error output cannot be
adjusted to 2.5 ± 0.1 V
TD Sensor (V ) If V
T
Measurement Error 0.3 V during V
detection.
Drum Charge Temperature detected
Thermistor Error by the drum charge
thermistor is below 0°C
or above 60°C
(
Abnormal Drum Temperature detected
Charge Thermistor by the drum charge
Output thermistor is between
0°C and 14°C
NOTE: No indication is displayed under the "abnormal drum charge
thermistor output" condition, because the machine soon recovers
due to the heat inside the machine.
SM
Fallback Toner
Supply Mode
Fixed Supply Mode
> 2.5 V during Fixed Supply Mode
SP
detection.
< 2.5 V during Fixed Supply Mode
SG
detection
Fixed Supply Mode
> 4.0 V or V < Fixed Supply Mode
T T
T
Fixed Supply Mode
TD Sensor Supply
Mode
1-21
Display on
Operation Panel
None
None
Manual ID level or
ADS indicator blinks
Manual ID level or
ADS indicator blinks
None
None
A207/A208/A211