3Com CP-1 owner manual Troubleshooting, Problem

Troubleshooting 5

CP-1 Digital Audio Environment Processor

Troubleshooting

If you encounter a problem, please review the items in the following checklist. Also be sure to thoroughly check all other connected components such as speakers, receiver/amplifier/preamp, VCR, TV, CD player, etc.

Problem Possible Cause and Solution

Input level meters not functioning

Remote control not working

No audio

Erratic behavior

No output

Display irregularities

Center channel only plays

Make sure INPUT LEVEL on the CP-1 front panel is turned up. Check the connections on the rear and make sure signal is going into the CP-1. Check SOURCE and MONITOR switches and try toggling them in and out.

Make sure that the correct input is selected and that only one input button is depressed.

Check the batteries and make sure that they are inserted correctly with proper polarity. Make sure that the infrared receiver on the CP-1 front panel above the POWER switch is not obstructed. If the remote control unit is still not functioning, RESTORE DEFAULTS as described below.

Check input and output connections. They may be reversed relative to the IN and OUT jacks of your receiver/amplifier/ preamp or other source.

Power turn-on with large power amps may cause power sags that will confuse the CP-1. To prevent this, plug the CP-1 into an AC outlet on a different branch circuit, or turn on one amplifier at a time.

First verify that signal is coming into the CP-1 by observing the Input Level meters. Increase VOLUME using the Remote Control and check the Front/Back and Left/Right balances.

Make sure that the rear panel Output Level controls are turned up. Check the CP-1 mute controls to make sure they are not engaged.

Check all other equipment settings and connections and verify that the amplifier(s) being fed by the CP-1 are operational.

Adjust the contrast (relative brightness) of the display using the procedure described on the Quick Reference Guide, and on Page 13 of the Owner's Manual. If the display is showing strange characters, RESTORE DEFAULTS as describet the end of this section.

Check to see if your HiFi VCR has dropped out of tracking — readjust.

Your VCR Stereo/Mono/L-R switch may be in the wrong posi- tion — set it to stereo.

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