Xerox DocuPrint N2125 Service Manual page 319

Print Engine Controller PWB <=> Laser Assembly
12)
Figure 15 Print Engine Controller PWB <=> Laser Assembly
Table 12 shows the signal names for the Fuser Print Engine Controller PWB <=> Laser Assem-
bly path:
Table 12 Signal Names
Signal Name Description
P.DATA Print Image Data
Signal Levels: High = 3.3V Low = 0V
Initial Issue
DocuPrint N2125
(Figure 15) (Table
Signal Name
/nP.DATA
/LD
/LDEN
Vmf(D/A)
/SOS(IN)
5VLD
/RMOT(OUT)
/RCLK
02/2000
7-19
Table 12 Signal Names
Description
Print Image Data
Signal Levels: High = 3.3V Low = 0V
Control signal which determines the drive voltage for the Laser Diode.
Signal: Analog
Control signal which determines the drive voltage for the Laser Diode.
Signal: Analog
Control signal for the Laser Diode
Signal: Analog
Synchronization signal generated by the SOS PWB which indicates the
start of each scan.
Signal: TTL
+5V power source to the Laser Diode (0V when the Front Cover Assem-
bly is open or the Print Cartridge is not in place).
High: 5V Low: 0V
Scanner Motor Control signal which switches the Laser Motor on and off
Low: 0V (ON), HIgh: 3.3V (OFF)
Synchronization signal for the Laser Motor
Signal: Pulse
Wiring Data
Base Engine