Panasonic CQC7403U - CAR AUDIO - MULTI-LANG, Service Manual

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General
Power Supply DC 12V (11V - 16V),
Test Voltage 14.4V
Negative Ground
Tone Controls (Bass/Treble) Bass: ±12dB at 60Hz
Treble: ±12dB at 16kHz
Equlizer Center Frequency 60, 160, 400, 1k, 3k, 6k, 16k Hz
(CQ-C7403U/C7303U)
Equlizer Center Frequency Band 1 (60, 80, 100, 200 Hz)
Band 2 (500, 1k, 2k, 3k Hz)
Band 3 (10k, 12k, 15k, 18k Hz)
(CQ-C7203U/C7103U)
Variable Range of Equalizer -12dB to 12dB (2dB step)
Current Consumption Less than 2.2A
(CD mode; 0.5W × 4-speaker)
Maximum Power Output 50W × 4(at 1kHz)
Speaker Impedance 4 - 8
Ω
Pre-amp Output Voltage
<CQ-C7403U/C7203U> 5V
(CD mode; 1kHz, 0dB)
<CQ-C7303U> 2.5V
(CD mode; 1kHz, 0dB)
<CQ-C7103U> 2V
(CD mode; 1kHz, 0dB)
Subwoofer Output Voltage
<CQ-C7403U/C7203U> 5V
(CD mode; 1kHz, 0dB)
<CQ-C7303U> 2.5V
(CD mode; 1kHz, 0dB)
<CQ-C7103U> 2V
(CD mode; 1kHz, 0dB)
Pre-amp Output Impedance
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CQ-C7403U
CQ-C7303U
CQ-C7203U
CQ-C7103U
WMA MP3 CD Player/Receiver
<CQ-C7403U/C7203U> 60
Ω
<CQ-C7303U/C7103U> 200
Ω
Subwoofer Output Impedance
<CQ-C7403U/C7203U> 60
Ω
<CQ-C7303U/C7103U> 200
Ω
FM Stereo Radio
Frequency Range 87.9MHz - 107.9MHz
Usable Sensitivity 10.2dBf. (0.9µV, 75
Ω
)
50dB Quieting Sensitivity 15.2dBf. (1.6µV, 75
Ω
)
Frequency Response 30Hz-15kHz (±3dB)
Alternate Channel Selectivity 75dB
Stereo Separation 35dB (at 1kHz)
Image Response Ratio 75dB
IF Response Ratio 100dB
Signal to Noise Ratio 62dB
AM Radio
Frequency Range 530kHz - 1,710kHz
Usable Sensitivity 27dB/µV (S/N 20dB)
CD Player
Sampling Frequency 8 Times Oversampling
DA Converter 4 DAC System
Pick-up Type Astigma 3-Beam
Light Source Semiconductor Laser
Wave Length 790 nm
Frequency Response 20 Hz-20kHz (±1dB)
Signal to Noise Ratio 96dB
Total Harmonic Distortion 0.01% (1kHz)
Wow and Flutter Below Measurable Limits
Channel Separation 75dB
AUTOMOTIVE AFTERMARKET
Specifications*
ORDER NO. ACED051227C7
C4