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CD3720
13
Troubleshooting
Reset
After removing the front panel, use a pencil tip (or any non-metallic object) to press RESET
(20).
Remove Radio From Dash
To remove the radio from the dash, detach the
front panel and remove the trim ring by gently
pulling up in the middle to release the plastic
snaps. Insert removal keys between the radio
chassis and sleeve to depress locking
springs. Pull the radio out of the dash.
Problem Cause Corrective Action
Does not operate
(display does not light)
No power to yellow wire; no
power to red wire
Check connection with test light;
check vehicle fuse with test light
Inline fuse blown Replace fuse
No power to unit Inline fuse blown Check/replace fuse
No speakers operate
(display lights normally)
Speaker harness not
connected
Connect speaker harness; check
speaker wires
Not all speakers
operate
Incorrect splices or
connections
Check all splices and connections
Speaker wires shorting to
chassis ground or to each
other
Check splices, insulate all bare wires
Blows fuses Power wire shorting to
ground
Make sure wire is not pinched
Speaker wires shorting to
ground
Make sure wire is not pinched
Incorrect fuse/fuse too small Install fuse of correct rating
Error-1 (CD Player) Mechanism error Press RESET, insert disc and try
again
Error-2 (CD Player) Servo error Press RESET, insert disc and try
again
CD skips too much Receiver mount is not solid
or backstrap is not secure
Check mounting and backstrap,
tighten if needed
Specifications
CD Player
Signal to noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>90 dB
Frequency response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Hz to 20kHz, -3 dB
Channel separation @ 1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>55 dB
D/A converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Bit/CH
FM Tuner
Tuning range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5MHz – 107.9MHz
FM mono sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 dBf
50 dB quieting sensitivity (stereo) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 dBf
Stereo separation @ 1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>30 dB
Frequency Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30Hz to 14kHz, -3dB
AM Tuner
Tuning range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 530kHz – 1720kHz
AM sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30uV
Frequency response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50Hz to 2kHz, -3dB
Amplifier
Total system power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 watts peak
Power output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50W x 4 peak
Speaker output impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 ohms
General
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 16 VDC, negative ground
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 amp fast blow ATO
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7" x 7" x 2" (178mm x 178mm x 51mm)
Specifications subject to change without notice.
12-Month Limited Warranty
AUDIOVOX CORPORATION (the Company) warrants to the original retail purchaser of this product that
should this product or any part thereof, under normal use and conditions, be proven defective in material or
workmanship within 12 months from the date of original purchase, such defect(s) will be repaired or replaced
with new or reconditioned product (at the Company's option) without charge for parts and repair labor. To
obtain repair or replacement within the terms of this Warranty, the product is to be delivered with proof of
warranty coverage (e.g. dated bill of sale), specification of defect(s), transportation prepaid, to the warranty
center at the address shown below.
This Warranty does not extend to the elimination of car static or motor noise, to correction of antenna
problems, to costs incurred for installation, removal, or reinstallation of the product, or damage to tapes,
compact discs, accessories or vehicle electrical systems. This Warranty does not apply to any product or part
thereof which, in the opinion of the Company, has suffered or been damaged through alteration, improper
installation, mishandling, misuse, neglect, accident, or by removal or defacement of the factory serial number/
bar code label(s) or markings. THE EXTENT OF THE COMPANY'S LIABILITY UNDER THIS WARRANTY IS
LIMITED TO THE REPAIR OR REPLACEMENT PROVIDED ABOVE AND, IN NO EVENT, SHALL THE
COMPANY'S LIABILITY EXCEED THE PURCHASE PRICE PAID BY PURCHASER FOR THE PRODUCT.
This Warranty is in lieu of all other express warranties or liabilities. ANY IMPLIED WARRANTIES,
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, SHALL BE LIMITED TO THE DURATION
OF THIS WRITTEN WARRANTY. ANY ACTION FOR BREACH OF ANY WARRANTY HEREUNDER
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY MUST BE BROUGHT WITHIN A PERIOD
OF 30 MONTHS FROM DATE OF ORIGINAL PURCHASE. IN NO CASE SHALL THE COMPANY BE
LIABLE FOR ANY CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR BREACH OF THIS OR ANY
OTHER WARRANTY, EXPRESS OR IMPLIED, WHATSOEVER. No person or representative is authorized to
assume for the Company any liability other than expressed herein in connection with the sale of this product.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of
incidental or consequential damage so the above limitations or exclusions may not apply to you. This
Warranty gives you specific legal rights and you may also have other rights which vary from state to state.
U.S.A: Audiovox Corporation, 150 Marcus Blvd., Hauppauge, NY 11788, 1-800-323-4815
CANADA: Call 1-800-323-4815 for location of warranty station serving your area.