Troubleshooting Guide; Introduction; Precautions; Checking Prior To Troubleshooting - Ricoh HL-F1 Field Service Manual

6. Troubleshooting

Troubleshooting Guide

Introduction

This section gives the service personnel some of the troubleshooting procedures to be followed if an error
or malfunction occurs with the facsimile equipment. It is impossible to anticipate all of the possible problems
which may occur in future and determine the troubleshooting procedures, so this section covers some
sample problems. However, those samples will help service personnel pinpoint and repair other defective
elements if he/she analyzes and examines them well.

Precautions

Be sure to observe the following to prevent the secondary troubles from happening:
1. Always unplug the AC power cord from the outlet when removing the covers and PCBs, adjusting the
mechanisms, or conducting continuity testing with a circuit tester.
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2. When disconnecting the connectors, do not pull the lead wires but hold the connector housings.
3. Before handling the PCBs, touch a metal portion of the machine to discharge static electricity charged
in your body.
When repairing the PCBs, handle them with extra care.
After repairing the defective section, be sure to check again if the repaired section works correctly. Also
record the troubleshooting procedure so that it would be of use for future trouble occurrence.

Checking Prior to Troubleshooting

Prior to proceeding to the troubleshooting procedures given in Section 9.2.4, make the following initial
checks:
Environmental conditions
Check that:
1. The machine is placed on a flat, firm surface.
2. The machine is used in a clean environment at or near normal room temperature (10°C to 35°C)
with normal relative humidity (20 to 80%).
3. The machine is not exposed to direct sunlight or harmful gases.
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