Sp2-Xxx (Drum) - Ricoh D127 Service Manual

SP2-XXX (Drum)

2001* Charge Roller Bias Adjust
Setting (Copying)
Adjusts the voltage applied to the charge roller for printing. The voltage
2001 1
changes automatically as charge-roller voltage control works. The value here
is the base value for the charge-roller voltage control.
The value from -1800 V to -1600 V is preferable.
ID sensor pattern
Adjusts the voltage applied to the charge roller for the ID sensor pattern (as
2001 2
part of charge-roller voltage correction). Setting the same value as
"SP2-201-002" is preferable.
Temporally Input
Inputs the voltage value. Too small value may cause the charge roller tainted.
2001 3
Too large value may cause attaching carrier particles in developer, on a
printed paper. The value from – 1800 V to 1600 V is preferable.
2005* Charge Bias Correction
2005 1 Vsdp Min
2005 2 Vsdp Max
Charge Roller Bias Correction (Step)
2005 3
Sets correction value by one step for bias adjustment to meet SP2001-001
setting value.
2102* Main Scan Adj.
2102 1 Magnification Adj.
2102 13 Beam Pitch Dot
2005 14 Beam Pitch Subdot
SM Appendix
[–2100 to –1500 / –1700 / 10 V/step]
[0 to 400 / 200 / 10 V/step]
[-2500 to 0 / 0 / 10 V/step]
[0 to 100 / 90 / 1 %/step]
[0 to 100 / 95 / 1 %/step]
[0 to 200 / 50 / 1 V/step]
[-0.5 to 0.5 / 0 / 0.1%/step]
[0 to 20 / 5 / 1 dot/step]
[0 to 15 / 3 / 1 sub-dot/step]
3-9
System Service Mode
D127/D128