Sp2-Xxx: Drum - Gestetner B003 Service Manual

SP2-xxx: Drum

SP2 Mode Number
2001* Charge Roller Bias Adjustment
1* Copying
2* ID Sensor Pattern
2005* Charge Roller Bias Correction Adjustment
1* Charge Roller Voltage
Correction 1
2* Charge Roller Voltage
Correction 2
3* Charge Roller Voltage
Adjustment 1
4* Charge Roller Voltage
Adjustment 2
5* Charge Roller Voltage Step
2101* Printing Erase Margin
1* Leading Edge (Top)
2* Trailing Edge (Bottom)
3* Left Edge
4* Right Edge
5* Trailing Edge - Back side
6* Back Side - Right
7* Back Side - Left
SM
SERVICE PROGRAM MODE
Function and [Setting]
Adjusts the voltage applied to the grid plate for
copying.
[–1000 ~ –2000 / –1480V / 10V step]
Adjusts the voltage applied to the charge roller
when making the VSDP ID sensor pattern (for
charge roller voltage correction). The actual charge
roller voltage is this value plus the value of SP2-
001-1.
[0 ~ 700 / 200V / 10V step]
Adjusts the lower threshold value for the charge
roller correction.
When the value of VSP/VSG is greater than this
value, the charge roller voltage increases by 30 V
(e.g., from –500 to –530).
[0.1 ~ 1.0 / 0.85 / 0.05 step]
Adjusts the upper threshold value for the charge
roller correction.
When the value of VSP/VSG is greater than this
value, the charge roller voltage decreases by 30 V
(absolute value).
[0.1 ~ 1.0 / 0.90 / 0.05 step]
Adjusts the lower limit value for charge roller
voltage correction.
[–1000 ~ –2000 / 1480V / 10V step]
Adjusts the upper limit value for charge roller
voltage correction.
[–1000 ~ –2000 / 2000V / 10V step]
Adjusts the correction voltage adjustment step size.
[0 ~ 100V / 30V / 10V step]
Adjusts the leading edge (top), trailing edge
(bottom), left, and right margins.
[0.9 ~ 9.0 / 3 / 0.1 mm step]
Specification: ±2 mm
[0.9 ~ 9.0 / 2 / 0.1 mm step]
Specification: ±1.5 mm
Adjusts the trailing edge erase margin on the
reverse side of duplex copies.
[0.0 ~ 4.0 / 1.2 / 0.1 mm step]
Recommended: 2 ± 1.5 mm
Adjusts the right side erase margin in the reverse
side of duplex copies.
[0.0 ~ 9.0 / 0.3 / 0.1 mm step]
Recommend: 2 ± 1.5 mm
Adjusts the left side erase margin in the reverse
side of duplex copies.
[0.0 ~ 9.0 / 0.3 / 0.1 mm step]
Recommended: 2 +2.5/-1.5 mm
5-7 B003/B004/B006/B007