Audiovox VOH-641, VOH-642 manual Troubleshooting

Negative Switched Dome lighting

To 12 pin	Red / black - Lamp on
connector	Black / red - Lamp common
	Purple / brown - Lamp Auto
on Monitor

To

constant

+12vdc

Factory Dome light circuit

To

constant

Factory Door ajar switch or Body Control computer

+12vdc

Troubleshooting:

Symptom:

No power at Video Monitor

Power but no video or sound

Picture, but no sound

Static on TV Stations (Tuner Version Only)

Remedy:

-Verify +12 VDC on Red wire at 2 pin Power Harness behind video moni- tor. Verify ground connection with continuity test from known good ground to black wire at 2 pin Power Harness

-Verify that the correct source is selected (i.e.: 1,2,3 or 4). Verify that the source is on and playing a known good media (such as a videotape). Verify connections at both ends of the source component harness.

-Push and hold the volume up button until sound is heard over headphones. If problem is limited to the dash radio, verify radio is tuned to the correct channel, and that power to the wired RF modulator is on. (Refer to instruc- tions with modulator kit). Otherwise, verify all connections per the wiring diagram on p5 and p6.

-Press Auto Program button. Then press CH up or CH down. Verify an- tenna mounting and connections to the tuner.

Note: Due to the nature of TV signals, vehicle motion, direction the vehicle is facing, distance from the transmitter, nearby surroundings and weather may adversely affect TV reception. These conditions may result in the following: picture roll, "snowy" picture, or momentary loss of color.

No Infrared remote func- tions for VCP (or other com- ponents)

-Check batteries in the hand held remote (not included with this kit). Verify that the IR LED ( p6 or p7 Wiring Diagram) is property attached to the sensor window of the VCP (or other component).

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