Important Sp Codes Related To Process Control - Toshiba e-STUDIO4500c Service Manual

August 2006

Important SP Codes Related to Process Control

This table lists the SP codes that are associated with the most important elements
of process control. For more, please refer to Section "5. Service Tables".
Charge
Charge dc bias Cdc
Charge ac bias Vpp
Exposure
PM (LD power) Ldp
Development
Development bias Vb
SP3501 001
Potential Control
Type Selection
0: Auto 1: Fixed
SP3576 SP2201
SP3577 SP2202
SP3581 SP2211
SP3575 SP2212
6-81
PROCESS CONTROL
Initial Range
–700 V –450 to –950 V
2.2 kV 1.8 to 2.4 kV,
2.2 kHz
0 –117 to +127
–500 V –300 to –800 V
Target Effect in
Process Control
Potential control
Prevention of
abnormal images
Potential control
Potential control