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Abbreviations and Acronyms A-1
Appendix A
Abbreviations and Acronyms
ACIA . . . . . . . . .Asynchronous Communication
Interface Adapter
ALU . . . . . . . . . . Arithmetic Logic Unit
APA . . . . . . . . . . All Points Addressable
ARC . . . . . . . . . .“A” Roller Clutch
(Duplex only)
ARIF. . . . . . . . . . Array Interface
ATC . . . . . . . . . .Auto Toner Control
CLEANER . . . . .Cleaner Unit
CNT . . . . . . . . . .Counter
COOLING FA2 . Cooling Fan
COS . . . . . . . . . .Cover Open Sensor
(Duplex only)
CRS . . . . . . . . . . “C” Roller Solenoid
(Duplex only)
CRT . . . . . . . . . .Cathode Ray Tube
CRTC . . . . . . . . . CRT Controller
CRU . . . . . . . . . . Customer-Replaceable Unit
DB-. . . . . . . . . . .Developer Bias Negative
DB+ . . . . . . . . . .Developer Bias Positive
DC P.S.1 . . . . . . .DC Power Supply
DEV . . . . . . . . . . Developer Unit
DMAC . . . . . . . .Direct Memory Access
Controller
DMC. . . . . . . . . .Dynamic Memory Controller
DRAM . . . . . . . .Dynamic Random Access
Memory
DUPLEX1 . . . . . Duplex Control #1
(Duplex only)
DUPLEX2 . . . . . Duplex Control #2
(Duplex only)
EIGS. . . . . . . . . .Enhanced Image Generation
System
EL. . . . . . . . . . . .Eraser LED
EPROM. . . . . . . Erasable Programmable Read
Only Memory
EPP . . . . . . . . . . Electrophotographic Process
EPS . . . . . . . . . . Exit Paper Sensor
ERASER . . . . . . Erase Lamp
EV30 . . . . . . . . . Enhanced Video K30 printer
EXS. . . . . . . . . . Exit Solenoid (Duplex only)
FA4 . . . . . . . . . . Cooling Fan (Duplex only)
FDC. . . . . . . . . . Floppy Disk Controller
FDD. . . . . . . . . . Floppy Disk Drive
FL . . . . . . . . . . . Fuser Halogen Lamp
FRU. . . . . . . . . . Field-Replaceable Unit
FUSER . . . . . . . Fuser Unit
HCI . . . . . . . . . . High Capacity Input
HCO . . . . . . . . . High Capacity Output
HEAD . . . . . . . . LED Array Print Head
HDD . . . . . . . . . Hard Disk Drive
HVU . . . . . . . . . High Voltage Unit
IGS . . . . . . . . . . Image Generation System
IGS CONT . . . . Image Control System
I.L. SW Front . . Interlocking Switch (Front)
I.L. SW Top. . . . Interlocking Switch (Top)
INS . . . . . . . . . . In Solenoid (Duplex only)
IPL. . . . . . . . . . . Initial Program Load)
Jogging . . . . . . . Jogging Motor
L PAPS . . . . . . . Lower Paper Sensor
LN03 . . . . . . . . . DEC emulation language
LPC . . . . . . . . . . Lower Paper Feed Clutch
LPE . . . . . . . . . . Lower Paper Empty Sensor
LPP . . . . . . . . . . Lower Pick Up Clutch
LPSS . . . . . . . . . Lower Tray Interlock Switch
Main . . . . . . . . . Main Motor
MAP . . . . . . . . . Maintenance Analysis
Procedures