Xerox N2125N - DocuPrint B/W Laser Printer, Service Manual

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02/2000
7-11 DocuPrint N2125
Base Engine
Wiring Data Initial Issue
Print Engine Controller PWB <=> HVPS PWB <=> BTR, Print Cartridge,
and Fuser Assembly (
Figure 9 ) ( Table 4 ) ( Table 5 )
Figure 9 Print Engine Controller PWB <=> HVPS PWB <=> BTR <=> Print Cartridge <=>
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:
Print Engine Controller PWB <=> HVPS PWB <=> BTR, Print Cartridge, and Fuser Assembly
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
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
Table 4 Signal Names
Signal Name Description
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