Troubleshooting; Before You Start - DEC VR315 Service Manual

This chapter describes how to troubleshoot a monitor problem through
fault isolation.

2.1 Before You Start

The following information will help you troubleshoot the monitor easily
and effectively:
WARNING
If you smell burning components, press the monitor power switch
off and disconnect the power cord.
• If you are going to service a display quality type of problem, tell the
customer to warm the monitor up for at least 20 minutes, if possible,
before you arrive and begin the troubleshooting procedures.
• Magnetic fields affect monitor performance and can give a false
indication of a monitor failure. Place the monitor away from any
electromagnetic devices such as printers and terminals, or away from
large magnetized objects such as filing cabinets and steel beams in
walls.
NOTE
Any time you replace a video casting assembly, deflection module,
or power supply module, perform all the necessary adjustments.
Refer to Chapter 3.

Troubleshooting

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