48V Power Fail; 48 Volt Failed - Printronix

P9212 Maintenance Manual

48 Volt Failed *

48V Power Fail

Instruction
1.
Cycle power: Turn printer off.
Wait 15 seconds. Turn printer
on.
2.
Press the control panel
switch that clears fault
indications.
3.
Turn printer off.
4.
Disconnect CCB/Mech
Driver cable from connector
J2 on the controller board
and connector J6 on the
mech driver board.
5.
Turn printer on and observe
card cage fan: feel for air flow
beneath the card cage.
6.
Cycle power and check
operation of the power supply
fan.
7.
Cycle power and check
operation of the power supply
fan.
8.
Cycle power and observe the
power supply fan above the
on/off switch.
9.
Cycle power and check for
the fault message.
10.
Cycle power and check for
the fault message.
4–4
Indication
"48 Volt Failed * " message.
"48 Volt Failed * " message.
—
—
Card cage fan comes on.
Power supply fan runs, then
stops.
Power supply fan runs, then
stops, with new mech. driver
board installed.
Power supply fan does not run
at all.
"48 Volt Failed * " message.
"48 Volt Failed * " message.
Yes
Go to step 2. Return printer to
normal operation.
Go to step 3. Return printer to
normal operation.
Go to step 4.
Go to step 5.
Replace the Reattach
controller board. CCB/Mech Driver
cable to connector
J2 on the
controller and
connector J6 on
the mech driver
board, and go to
step 6.
Replace the Go to step 7.
mech. driver
board.
Replace the Go to step 8.
hammer driver
board.
Replace the Return printer to
power supply. normal operation.
Replace +5V Return printer to
cable assembly. normal operation.
(See Appendix A.)
Go to step 10.
Replace Hi Return printer to
voltage cable normal operation.
assembly. (See
Appendix A.) Go
to step 11.
Troubleshooting
No
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