Xerox DocuPrint N2125 Service Manual page 311

Network laser printer
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Print Engine Controller PWB <=> HVPS PWB <=> BTR, Print Cartridge,
and Fuser Assembly
(Figure
9)
Print Engine Controller PWB <=> HVPS PWB <=> BTR, Print Cartridge, and Fuser Assembly
Table 4
shows the signal names for the Print Engine Controller PWB <=> HVPS PWB path:
Table 4 Signal Names
Signal Name Description
CR-DC
Control signal to switch the Charge Voltage for DC component of the CR and
the PBR on and off.
Low: 0V (OFF), High: 3.3V (ON) (applied charge voltage)
CR-AC
Constant-frequency pulse signal that provides the source of oscillation for gen-
erating the AC component of the CR
CR-CH
-
DB-DA
Constant-frequency pulse signal that provides the source of oscillation for gen-
erating the AC component of the DB (Development Bias) in the HVPS
Initial Issue
DocuPrint N2125
(Table
4)
(Table
5)
Figure 9 Print Engine Controller PWB <=> HVPS PWB <=> BTR <=> Print Cartridge <=>
Signal Name Description
TR(-)
Transfer Voltage (-) to be applied onto BTR (Analog)
TR(+)
Transfer Voltage (+) to be applied onto BTR (Analog)
DB.DC
Control signal to select the Development Voltage for DC component (Analog)
DTS
Control signal to select the DTS Voltage (Analog)
TR-A/D
-
TR-D/A
Control signal to select the TR(+) voltage (0 to 3.3VDC) as determined by the
ATDVC (Analog)
PRB
Pressure Roll Bias to be applied on the Pressure Roll
Print Engine Controller PWB <=> HVPS PWB <=> BTR, Print Cartridge, and Fuser Assembly
02/2000
7-11
Table 4 Signal Names
Base Engine
Wiring Data

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