Ricoh FT5233 Service Manual page 325

12 February 1992
9.7 TONER DENSITY CHECK INTERVAL SELECTION
(SP35/SP74)
When:
Purpose:
How:
NOTE: Normally, "0" (every 5 copies) should be selected for color toner
(SP74).
SP30: Black ID Detection
0: Every 10 copies
1: Every 5 copies
9.8 ID SENSOR AND V SENSOR AUTOMATIC
ADJUSTMENT (SP54)
When:
Purpose:
Adjustment standard:
How:
NOTE: Beeper sounds 2 times when the adjustment (about 4 seconds) are
completed.
The adjusted PWM value and sensor output can be monitored by
SP165 (ID-sensor PWM/Output Check) and SP166 (V-sensor
PWM/Output Check). Refer to the SP mode table for details.
If a customer complains of low image density of
copies during a toner near end condition.
To check toner density more often.
SP35 for black toner and SP74 for color toner
change the interval of ID sensor pattern detection.
SP74:
1. After cleaning, removing, or replacing the ID
sensor board or V sensor board.
2. At replacement of the OPC drum or RAM
board on the main control board.
3. If a toner supply control problem occurs.
4. If memory all clear (SP99) has been
performed.
To make sure that ID sensor and V sensor
functions correctly.
Vsg = 4.0 ±0.2 V
ID sensor:
Vlg = 4.0 ±0.2 V
V sensor:
SP54 adjusts PWM value in memory for ID
sensor and V sensor LED's to get correct sensor
output.
5-95
COPY QUALITY ADJUSTMENT
Color ID Detection
0: Every 5 copies
1: Every 10 copies