Process Control Self Check Procedure - Ricoh J-P2 Service Manual

17 January, 2003

6.2.3 PROCESS CONTROL SELF CHECK PROCEDURE

ID sensor solid pattern generation
Sensor pattern density detection
Toner amount calculation
V , V , V selection and V
D B L
ID sensor highlight pattern generation
Sensor pattern density detection
V
L
Step 1: V Adjustment
SG
This machine uses three ID sensors (direct reflection type). They are located at the
front, center, and rear of the transfer unit. Only the center ID sensor is used for
process control. The ID sensor checks the bare transfer belt's reflectivity and the
machine calibrates the ID sensor until its output (known as V
• V = 4.0 ± 0.5 Volts
SG
This calibration compensates for the transfer belt's condition and the ID sensor
condition, such as dirt on the surface of the belt or ID sensor.
Start
V adjustment
SG
adjustment
REF
(LD power) selection
End
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
6-11
PROCESS CONTROL
Default: off
G080D937.WMF
) is as follows.
SG