Xerox DocuPrint N2025, Service Manual

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02/2000
7-13 DocuPrint N2025/N2825
Base Engine
Wiring Data Initial Issue
4. Print Engine Controller PWB<-->HVPS<-->Print Cartridge (BCR and MAG. ROLL),
BTR, and DETACK SAW
Figure 7 Print Engine Controller PWB-HVPS-Print Cartridge, BTR, and Detack Saw
Table 6 Signal names for the Print Engine Controller PWB<-->HVPS path
Signal Name Description
DB-DC-D/A Control signal to select the DB (Development Bias) voltage (0 ~
3.3VDC)
TR-DA Control signal to select the TR(+) current (0 ~ 3.3VDC)
TR MON-I Monitor signal of the TR(+) current (0 ~ 3.3VDC) by the MTVC
TR-ON Control signal to switch the TR on and off (H=5.6V) (L=0V)
CR-DC Control signal to switch the DC component of the CR and PRB on and
off (H=24V) (L=0V)
CR-AC Constant-frequency pulse signal that provides the source of oscillation
for generating the AC component of the CR
DTS-PWM Control signal to select the DTS Duty(0 ~ 100%)
DB-AC Constant-frequency pulse signal that provides the source of oscillation
for generating the AC component of the DB (Development Bias)
Table 7 HVPS Outputs
Terminal Connector Output Voltage or Current
CR P/J186 CR(AC) 1.55 mA (Average)
CR(DC) -420 VDC
DB P/J187 DB(AC) 2.0 kVp-p
DB(DC) -300 VDC
TR P/J185 TR(+) 2.5 kV
TR(-) -650 VDC
DTS P/J188 DTS -1.13 kVDC
PRB P/J182 PRB 350 VDC
Table 6 Signal names for the Print Engine Controller PWB<-->HVPS path
Signal Name Description