Minolta 330 1, 2, 3, 4, 5, 6

4-6 magicolor 330 - Base Engine Service Manual

Primary Fault Isolation Procedures

The printer has a variety of intermittent problems, but generally does not complete a print cycle. The problems are

generally not identified by displayed error messages.

Step Actions and Questions Yes No

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

• Components connected to the MCU PWB

• Wiring and connectors linking the components

1Does the printer frequently fail to enter printer warm-up or is

the Control Panel frequently inoperative?

Go to FIP 4.1

Inoperative

Printer

Go to step 2

2LVPS LOADING CHECK

1. Run 50 Test Prints.

2. Measure the voltage between P33-3 on the LVPS and Frame

Ground, and between P32-11 on the LVPS and Frame Ground.

Is there a steady +5VDC between P33-3 and Frame Ground, and

is there at steady +24VDC between P32-11 and Frame Ground?

Go to step 3 Replace the

LVPS (RR P

9.119)

3HOST SOFTWARE REPLACEMENT

Reload the System Software (OS) or Application Software on the

host side.

Does the printer still exhibit erratic operation?

Go to step 4 Problem solved

4HOST/PRINTER INTERFACE CABLE REPLACEMENT

Replace the interface cable connecting the host to the printer.

Is the problem still present?

Go to step 5 Problem solved

5Replace the MCU PWB (RRP 9.123)

Does the problem still appear?

Go to step 6 Problem solved

6Replace the Controller PWB (RRP 9.129)

Does the printer still exhibit erratic operation?

Go to FIP 6.1

Electrical

Noise

Problem solved