User manual

Service/Technical Assistance 5–1

SERVICE/TECHNICAL ASSISTANCE

5.1 Maintenance

The Hand Held Products SCANTEAM 3700 Machine Mount CCD Bar Code Scanner

and Decoder is designed to provide reliable and efficient operation, requiring no routine

maintenance. The 3700 has no moving physical parts. Convection air flow serves to

cool the unit. Maintenance, therefore is related to troubleshooting and replacement of the

3700 Machine Mount CCD.

Troubleshooting procedures are described in the following section. Section 5.4 provides

procedures for removing and replacing a SCANTEAM 3700 Machine Mount CCD.

5.2 Troubleshooting Guide

This section describes procedures for identifying problems that prevent the SCANTEAM

3700 from operating normally. Field repair procedures include the following:

• Power supply troubleshooting

• 3700 Machine Mount CCD troubleshooting

5.2.1 Troubleshooting Hints

If there is no power to the 3700 Machine Mount CCD, check the following:

• Host power supply output to the 3700. Check that the output voltage from the host

is +5 VDC. If the voltage isn’t present or is out of range, there may be a problem

with power distribution from the host system. Appendix B provides the specific

voltage range.

• If there is no output voltage, check to be sure the host instrument power switch is set

to “ON”; if this switch is on and there is no output voltage, there may be a problem

with the host power supply.

• Check all cables for secure connections and continuity (with an ohm/volt/meter).

Warning: Only a qualified person should attempt to replace a power supply.