Ricoh G147 Service Manual page 217

SC350 (ID Sensor Pattern Test Error) is issued if this reading is abnormal.
002 Vsp
[0V ~ 5.00V]
Vsp is the ID sensor output after reading the ID sensor pattern:
Normal display: 0.1 ~ 0.3
SC351 (ID Sensor Vsg Test Error) is issued if this reading is abnormal.
003 Vpdp
[0V ~ 5.00V]
Vpdp is the ID sensor output immediately after Vsp output when the charge
potential drops. This reading is used for design purposes to determine the
development characteristics. DFU
Normal display: 3.4 ~ 4.0
SC352 (ID Sensor Edge Detect Pattern Error) is issued if this reading is
abnormal.
004 Vsm/Vsg DFU
[0V ~ 5.00V]
Vsm is the ID sensor output after reading the intermediate halftone pattern
(grayscale) portion of the ID sensor pattern.
Normal display: 65% ~ 85% (SP2972)
Note: The addition of the intermediate halftone pattern to the ID sensor pattern
and the Vpdp reading are features used by designers to check development
characteristics.
Hot Roller Strip
Toner and carbon clinging to the hot roller strippers can cause poor print quality.
3905
To prevent this, toner and carbon are dislodged from the hot roller strippers by
switching the fusing motor on/off after every print job. These SPs set up the
operation of this feature.
Number of Rotati
001
This SP sets the number of times the 1st Cleaning is done after the number of
SM
ID Sensor Pattern Output
Immediate Post-Pattern Output
Grayscale Post-Pattern Output
Hot Roller Stripper Cleaning After Job
Number Rotations
5-27 G147