Minolta magicolor 330 Service Manual page 94

Primary Fault Isolation Procedures
4.1 - Inoperative Printer
When you switch on the printer, the Control Panel does not light, the Fans do not rotate, the Rotary Motor does not
cycle, and the printer does not go into warm-up.
Step
SUSPECT COMPONENTS
The following components are associated with this specific
problem. One or more of these components may have failed
partially or completely. If you cannot isolate the problem using
this FIP, replace each component listed below, one at a time,
until the problem disappears.
• Interlock switches and circuits
• Wiring and connectors linking the components
1
ERROR MESSAGE OR FAILURE DISPLAYED
Enter Diagnostics and check for a displayed error or failure. Refer to
Section 7 on how to use the diagnostics to check for errors or fail-
ures.
Does diagnostics display a failure?
2
LVPS 110VAC IN CHECK
1. Remove the Rear Cover (RRP 9.4).
2. Measure the voltage between the two LVPS PWB solder points
that are located next to the AC Power Jack.
Is there 110VAC between the two points?
3
AC POWER CORD INSPECTION
Inspect the AC Power Cord.
Is the AC Power Cord plugged into the printer, and is the other
end plugged into an AC wall outlet?
4
AC POWER CHECK
Check the voltage at the AC wall outlet.
Is there approximately 110VAC (or 220VAC if the printer is the
220VAC model) at the AC wall outlet?
5
LVPS +5VDC CHECK
1. Remove the Rear Cover (RRP 9.4)
2. Measure the voltage between P33-3 on the LVPS and Frame
Ground.
Is there +5VDC between P33-3 and Frame Ground.
6
LVPS +24VDC CHECK
1. Remove the Rear Cover (RRP 9.4)
2. Measure the voltage between P32-11 on the LVPS and Frame
Ground.
Is there +24VDC between P32-11 and Frame Ground.
4-4
Actions and Questions Yes
Go to Section 3
to resolve
errors or fail-
ures
Go to step 5
Go to step 4
Go to step 5
Go to step 6
Go step 7
magicolor 330 - Base Engine Service Manual
No
Go to step 2
Go to step 3
Plug the AC
Power Cord
into the printer
and into an AC
wall outlet
Troubleshoot
the AC power
at the wall out-
let
Go to step 9
Go to step 9