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A-2 Abbreviations and Acronyms
MCH . . . . . . . . . .Main Charger Unit
MCS . . . . . . . . . .Main Charger Sensor
MIGS . . . . . . . . .Minter Image Generation
System
MPU . . . . . . . . . .Micro Processing Unit
MUX. . . . . . . . . .Multiplexer
OPC. . . . . . . . . . .Organic Photoconductor
OPPNL . . . . . . . .Operator Panel
PC . . . . . . . . . . . .Photoconductor
PCL. . . . . . . . . . .Hewlett-Packard Printer Con-
trol Language (Software)
PCL. . . . . . . . . . .Printer Control Logic Board
(Hardware)
PCL5. . . . . . . . . .HP Printer Control Language
(Version 5)
PCU. . . . . . . . . . .Photoconductor Unit
PFS . . . . . . . . . . .Paper Full Sensor
PH 1 . . . . . . . . . .A.C. Power Cord
PIA . . . . . . . . . . .Peripheral Interface Adapter
PIT . . . . . . . . . . .Parallel Interface/Timer
PMP . . . . . . . . . .Page Map Primitives
POR. . . . . . . . . . .Power On Reset
PPS . . . . . . . . . . .Paper Path Sensor
(B-C Sensor) (Duplex only)
PROM. . . . . . . . .Programmable Read Only
Memory
PS . . . . . . . . . . . .PostScript
PSS . . . . . . . . . . .Photoconductor Seam Sensor
PTM . . . . . . . . . .Programmable Timer Module
PTS . . . . . . . . . . .Paper Timing Sensor
PW CONT2 . . . .Power Control #2
PW CONT3 . . . .Power Control #3
PWBA. . . . . . . . .Printed Wire Board Assembly
RAM . . . . . . . . . .Random Access Memory
Resist Motor . . . .Registration Motor
(Duplex only)
ROM . . . . . . . . . .Read Only Memory
Root Motor . . . . .“C” Roller Motor
(Duplex only)
RPS . . . . . . . . . . Registration Paper Sensor
(Duplex only)
RSS . . . . . . . . . . Registration Side Sensor
(Duplex only)
SCC . . . . . . . . . . Serial Communication
Controller
SIG IF or SIF. . . Signal Interface Board
SRAM . . . . . . . . Static Random Access
Memory
SRC . . . . . . . . . . System Reference Code
SRMR2 . . . . . . . Side Registration Motor
Control #2 (Duplex only)
Suction FA3. . . . Suction Fan
SW5 . . . . . . . . . . Upper Cassette In Switch
SW6 . . . . . . . . . . Lower Cassette In Switch
TAG . . . . . . . . . . Troubleshooting Analysis
Guide
TC . . . . . . . . . . . Toner Concentration
TCH . . . . . . . . . . Transfer Charger Unit
TCS . . . . . . . . . . Transfer Charger Sensor
TDS . . . . . . . . . . Toner Density Sensor
TES . . . . . . . . . . Toner Empty Sensor
TFS . . . . . . . . . . Tray Front Sensor
TH . . . . . . . . . . . Thermistor
TO SIG IF . . . . . To Signal Interface
TOSIGIF CENT To Signal Interface Centronics
TONER . . . . . . . Toner Motor
TPS . . . . . . . . . . Timing Paper Sensor
(Schematics)
TPS . . . . . . . . . . Toner Patch Sensor (Printer)
TRC . . . . . . . . . . Timing Roller Clutch
TRS . . . . . . . . . . Tray Rear Sensor
PAPS . . . . . . . . . Upper Paper Sensor
UMT 1-3 . . . . . . Usage Meter Drive Signal
UPC . . . . . . . . . . Upper Paper Feed Clutch
UPE . . . . . . . . . . Upper Paper Empty Sensor
UPP . . . . . . . . . . Upper Pick Up Clutch
UPSS . . . . . . . . . Upper Tray Interlock
VPCL. . . . . . . . . Video Printer Control Logic
Board