Printronix P9012 Maintenance Manual page 252

PCBA, power stacker, replacing, A–4
PCBA, replacing
DCU, 6–72
hammer driver, 6–74
hammer driver backplane, 6–92
MCU, 6–72
mechanism driver, 6–72
power supply, 6–74
ribbon control, 6–10
Platen gap, adjusting, 5–18
PLATEN OPEN fault message, 4–8
Platen open switch
operation, 2–36
replacing, 6–68
Position switch, power stacker, replacing,
A–10
Power bus, AC, replacing, 6–88
Power bus, DC, replacing, 6–90
Power paper stacker
DC power cable, A–16
emitter, A–12
limit switches, A–8
logic cable, A–14
motor, A–6
PCBA, A–4
position switch, A–10
testing, A–18
troubleshooting, A–21
Power supply PCBA, replacing, 6–74
Power supply, operation, 2–30
Preload
counterweight, 5–6
shuttle, 5–6
Preventive maintenance, 3–2
Print quality
too dark, 5–14
too light, 5–14
Index–4
Printer
cleaning, 3–4
self–tests, 4–14
PROGRAM PROM * fault message, 4–9
R
Replacing
AC power bus assembly, 6–88
airflow assembly, 6–16
blower, 6–16
cam wick, 6–40
card cage, 6–76
card cage fan, 6–86
control panel, 6–6
counterweight assembly, 6–32
DC power bus assembly, 6–90
DCU PCBA, 6–72
exhaust fan, 6–70
flywheel assembly, 6–36
hammer coil, 6–28
hammer driver backplane PCBA, 6–92
hammer driver PCBA, 6–74
hammer spring, 6–22
logic backplane, 6–94
magnetic pickup, 6–42
MCU PCBA, 6–72
mechanism driver PCBA, 6–72
panel, left side, 6–4
panel, right side, 6–4
paper feed belt, 6–52
paper feed motor, 6–56
paper ironer, 6–50
paper motion sensor, 6–62
paper out switch, 6–66
platen open switch, 6–68
power paper stacker DC cable, A–16
power paper stacker emitter, A–12
power paper stacker limit switches, A–8