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CD3720XM
Troubleshooting
Problem
Cause
Does not operate
No power to yellow wire; no
(display does not light)
power to red wire
Inline fuse blown
No power to unit
Inline fuse blown
No speakers operate
Speaker harness not
(display lights normally)
connected
Not all speakers
Incorrect splices or
operate
connections
Speaker wires shorting to
chassis ground or to each
other
Blows fuses
Power wire shorting to
ground
Speaker wires shorting to
ground
Incorrect fuse/fuse too small Install fuse of correct rating
Error-1 (CD Player)
Mechanism error
Error-2 (CD Player)
Servo error
CD skips too much
Receiver mount is not solid
or backstrap is not secure
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.
Corrective Action
Check connection with test light;
check vehicle fuse with test light
Replace fuse
Check/replace fuse
Connect speaker harness; check
speaker wires
Check all splices and connections
Check splices, insulate all bare wires
Make sure wire is not pinched
Make sure wire is not pinched
Press RESET, insert disc and try
again
Press RESET, insert disc and try
again
Check mounting and backstrap,
tighten if needed
Specifications
CEA Power Ratings
Power Output. . . . . . . . . . . . . . . . . . . . . . . . . . . 16 watts RMS X 4 channels into 4-ohms @ < 1% THD+N
Signal to Noise Ratio . . . . . . . . . . . . . . . . . . . . . . . . 70dBA below reference. (Reference: 1 watt, 4-ohms)
Frequency Response. . . . . . . . . . . . . . . . 20Hz to 20kHz (-3dB), Auxiliary input used as source reference
Reference Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4VDC
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >35 dB
Frequency Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30Hz to 12kHz, -3dB
AM Tuner
Tuning Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 530kHz – 1710kHz
AM Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30uV
Frequency Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30Hz to 2kHz, -3dB
Auxiliary Input
Input Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mV RMS for 1 watt RMS into 4-ohms
Frequency Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Hz to 20kHz, -3dB
Input Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10k-ohms
General
Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 16 VDC, negative ground
Fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 amp fast blow ATO
Wire Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-pin quick-disconnect
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7" x 7" x 2" (178mm x 178mm x 51mm)
Specifications subject to change without notice.
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