C–3
Mnemonics
LATPOL
Latch Strobe Polarity
. . . . . . . . . .
,–
Left Ribbon Motor + & –
. . . . . .
MANLOAD
Manual Hammer Load
. . . . . . . .
MA0–8
Memory Address 0 to 8
. . . . . . . . . . . .
MCUCNT
MCU Dot Count Clear
. . . . . . . . .
MCUREC
MCU Received DCU Data
. . . . . . . . .
MPU
Magnetic Pick Up
. . . . . . . . . . . . . .
MPU+,1
Differential Magnetic Pick Up + & –
. . . . . . . . . . .
NACK
Acknowledge
. . . . . . . . . . . .
NBAS
Address Strobe
. . . . . . . . . . . . .
NBG
Bus Grant
. . . . . . . . . . . . . .
NBGACK
Bus Grant Acknowledge
. . . . . . . . .
NBLDS
Lower Data Strobe
. . . . . . . . . . .
NBR
Bus Request
. . . . . . . . . . . . . .
NBUDS
Upper Data Strobe
. . . . . . . . . . .
NBUFCLR
Buffer Clear
. . . . . . . . .
NBRDBWR
Read or Write
. . . . . . . .
NBRKRTRP
Breaker Trip
. . . . . . .
NCASOL
Column Address Strobe Lower
. . . . . . . . . .
NCASOU
Column Address Strobe Upper
. . . . . . . . . .
NCIACK
Interrupt Acknowledge
. . . . . . . . . .
NCNTCLR
Dot Count Clear
. . . . . . . . .
NCTC0–2
Counter/Timer Chip 0–2 Select
. . . . . . . . . .
NCTRO
Dot Count Read
. . . . . . . . . . .
NDAV
Data Available
. . . . . . . . . . . .
NDCURD
MCU Read DCU Data
. . . . . . . . .
NDCUWR
MCU Write DCU Data
. . . . . . . . .
NDMACS
DMA Chip Select (68B44)
. . . . . . . . .
NDSTBOUT
Data Strobe Out
. . . . . . .
NDTEXD
Data Transfer Extend
. . . . . . . . . .
NEMDIS
Memory Disable (Vcc
≤
3.4V)
. . . . . . . . . .
NENABLE
Enable Front Panel
. . . . . . . . .
NEEPROM
EEPROM Device Select
. . . . . . . .
NEPROM0
EPROM 0 Device Select
. . . . . . . . .
NEPROM1
EPROM 1 Device Select
. . . . . . . . .
NEPROM2
EPROM 2 Device Select
. . . . . . . . .
Summary of Contents for P9012
Page 1: ...P N 132305 001 Rev E P9012 Multifunction Line Printer...
Page 49: ...2 31 Principles of Operation Power Supply PCBAs 1 3 SHORT OPEN Figure 2 21 Power Supply PCBA...
Page 58: ...2 40 Principles of Operation...
Page 84: ...4 18 Troubleshooting...
Page 118: ...5 34 Alignments and Adjustments...
Page 203: ...6 85 Replacement Procedures This page intentionally left blank...
Page 214: ...6 96 Replacement Procedures...
Page 236: ...A 22 Power Paper Stacker Maintenance...
Page 246: ...D 2 Torque Table...
Page 254: ...Index 6...
Page 255: ......
Page 256: ...132305 001 Rev E...