Initialization Process And Sc Codes - Ricoh B202 Service Manual

PHOTOCONDUCTOR UNIT

Initialization Process and SC Codes

SC code 440-1 or 440-2 show when a drum gear position sensor detects an error.
The table shows the following:
• Steps of the initialization process
• Possible errors
• Corresponding SC codes.
Initialization process
The four drums simultaneously
operated\ for seven seconds. The
two drum position sensors detect the
two drum gear interrupters several
Step 1
times.
The time lags between detection of
the black drum gear interrupter and
Step 2 detection of the yellow drum gear
interrupter are checked. The average
time lag is calculated.
The black drum is operated. The
Step 3 position of the gear is adjusted
according to the average time lag.
NOTE: No error occurs in step 1 and step 2 if the connector of the black drum
position sensor has been connected to the yellow drum position sensor
(and the connector of the yellow drum position sensor, to the black drum
position sensor).
B202/B178/B180
Possible error
The black drum gear
interrupter is not detected.
The yellow drum gear
interrupter is not detected.
Both black and yellow drum
gear interrupters are not
detected.
The black drum gear
interrupter is not detected
( ).
NOTE
6-52
SC code
440-1
440-2
440-1
440-1
SM