Audiovox MMD70 Specification, Troubleshooting, Power but no video or sound, Picture, but no sound

P.Specification

Disc format: DVD/CD/MP3

Color system: NTSC/PAL

Screen size: 7”

Frequency response: 20 Hz to 20 kHz

Video output: 1 Vp-p/75 Ohm, unbalanced

Audio output: 1.4Vrms/10kOhm

Audio S/N: Better than 60 dB

Dynamic range : Better than 85 dB

Laser: Semiconductor Laser, Wave Length: 650 nm/790 nm

Power source: DC 12V

Power consumption: 30 W

Operating temperature: 5~35°C

Storage temperature: -20~60°C (4~140°F)

Operating humidity: 10~75%

Dimensions (W x H x D): 223 x 165 x 50 mm (8.78” x 6.5” x 1.97”)

Q.Troubleshooting:

SYMPTOM:REMEDY:

No power at Video Monitor -Verify +12 VDC on Red wire at 2 pin Power Harness behind video monitor. Verify ground connection with conti- nuity test from known good ground to black wire at 2 pin Power Harness.

Power but no video or sound

-Verify that the correct source is se- lected (i.e.: DVD, AV1 or AV2). Verify that the source is on and playing a known good media (such as a videotape). Verify connections at both ends of the harness.

Picture, but no sound	-Verify that the headphones are turned
	on; check headphone batteries.
	-Verify that power is available to the FM
	Modulator; make sure the modulator
	and the vehicle radio are tuned to the
	FM station.

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