Printronix P9012 Maintenance Manual page 250

D
DC cable, power stacker, replacing, A–16
DC power bus assembly, replacing, 6–90
DCU
block diagram, 2–16
operation, 2–14
DCU PCBA, replacing, 6–72
Description, printer, 1–4
Dot matrix printing, description, 2–3
E
Elongated characters, 2–4
Emitter, power stacker, replacing, A–12
Equipment list, 1–13
Exhaust fan, replacing, 6–70
F
Fans, replacing
card cage, 6–86
exhaust, 6–70
Fault condition, shuttle rattling, 5–6
Fault messages, 4–2
CHANGE RIBBON, 4–5
COOLING, 4–5
FONT PROM *, 4–5
HAMMER DR PCB *, 4–6
NOVRAM *, 4–6
PAPER JAM, 4–7
PAPER OUT, 4–8
PLATEN OPEN, 4–8
PROGRAM PROM *, 4–9
RIBBON, 4–9
SHUTTLE STALL, 4–10
STACKER, 4–10, A–21
Index–2
Faults
field service required, 4–4
operator correctable, 4–3
Features
optional, 1–6
standard, 1–5
Flywheel assembly, replacing, 6–36
FONT PROM * fault message, 4–5
Functional elements, 2–9
H
Hammer bank
cleaning, 3–6
description, 2–5
Hammer bank and shuttle, operation, 2–28
Hammer coil, replacing, 6–28
HAMMER DR PCB * fault message, 4–6
Hammer driver
block diagram, 2–27
operation, 2–25
Hammer driver backplane PCBA, replacing,
6–92
Hammer driver PCBA, replacing, 6–74
Hammer spring
adjusting, 5–14
replacing, 6–22
Hammer tip alignment, 5–16
Hardware, inspecting, 3–3
Hex code printout, 4–17
I/O panel, 1–12
Indicators, control panel, 1–7
Inspecting printer, 3–3
I