Panasonic CQ-C8303U Service Manual
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Specifications*

General
Power Supply
Tone Controls (Bass/Treble) Bass: ±12dB at 60Hz
Equalizer Center Frequency
Variable Range of Equalizer
Current Consumption
Maximum Power Output
Speaker Impedance
Pre-amp Output Voltage
<CQ-C8403U>
<CQ-C8303U>
Subwoofer Output Voltage
<CQ-C8403U>
<CQ-C8303U>
Pre-amp Output Impedance
<CQ-C8403U>
<CQ-C8303U>
Subwoofer Output Impedance
<CQ-C8403U>
<CQ-C8303U>
FM Stereo Radio
Frequency Range
Usable Sensitivity
50dB Quieting Sensitivity
Frequency Response
Alternate Channel Selectivity 75dB
DC 12V (11V - 16V),
Test Voltage 14.4V
Negative Ground
Treble: ±12dB at 16kHz
60, 160, 400, 1k, 3k, 6k, 16k (Hz)
-12dB to 12dB (2dB step)
Less than 2.2A
(CD mode; 0.5W × 4-speaker)
50W × 4(at 1kHz)
4 - 8Ω
5V (CD mode; 1kHz, 0dB)
2.5V (CD mode; 1kHz, 0dB)
5V (CD mode; 1kHz, 0dB)
2.5V (CD mode; 1kHz, 0dB)
60Ω
200Ω
60Ω
200Ω
87.9MHz - 107.9MHz
10.2dBf. (0.9µV, 75Ω)
15.2dBf. (1.6µV, 75Ω)
30Hz-15kHz (±3dB)
AUTOMOTIVE AFTERMARKET
CQ-C8403U
CQ-C8303U
WMA MP3 CD Player/Receiver
Stereo Separation
Image Response Ratio
IF Response Ratio
Signal to Noise Ratio
AM Radio
Frequency Range
Usable Sensitivity
CD Player
Sampling Frequency
DA Converter
Pick-up Type
Light Source
Wave Length
Frequency Response
Signal to Noise Ratio
Total Harmonic Distortion
Wow and Flutter
Channel Separation
Dimensions (W×H×D)**
Weight**
* Specifications and the design are subject to possible modification
without notice due to improvements.
** Dimensions and Weight shown are approximate.
** Above specifications comply with EIA standards.
© 2005 Matsushita Electric Industrial Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. ACED051226C1
35dB (at 1kHz)
75dB
100dB
62dB
530kHz - 1,710kHz
27dB/µV (S/N 20dB)
8 Times Oversampling
4 DAC System
Astigma 3-Beam
Semiconductor Laser
790 nm
20Hz-20kHz (±1dB)
96dB
0.01% (1kHz)
Below Measurable Limits
75dB
7"×1-15/16"×6-1/8"
(178×50×155mm)
3 lbs. 8oz (1.6 kg)
Unauthorized
copying
C4
and

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Summary of Contents for Panasonic CQ-C8303U

  • Page 1: Specifications

    ORDER NO. ACED051226C1 AUTOMOTIVE AFTERMARKET CQ-C8403U CQ-C8303U WMA MP3 CD Player/Receiver Specifications* General Stereo Separation 35dB (at 1kHz) Power Supply DC 12V (11V - 16V), Image Response Ratio 75dB Test Voltage 14.4V IF Response Ratio 100dB Negative Ground Signal to Noise Ratio 62dB Tone Controls (Bass/Treble) Bass: ±12dB at 60Hz...
  • Page 2: Table Of Contents

    CQ-C8403U / CQ-C8303U CONTENTS Page Page 1 ABOUT LEAD FREE SOLDER (PbF) 11 IC BLOCK DIAGRAM 2 FEATUERS 12 PACKING PARTS LIST 3 REPLACEING THE FUSE 13 REPLACEMENT PARTS LIST(Unit) 4 MAINTENANCE 14 EXPLODED VIEW (Unit) 5 NOTES 15 CD PLAYER PARTS LIST...
  • Page 3: About Lead Free Solder (Pbf)

    • • • • D.M(Direct Memory) • • • • Customize the Display (Customize Function) • • • • MP3/WMA Playback from CD-R/RW. • • • • This manual is for 2 models CQ-C8403U and CQ-C8303U. The following table describes the differences between 2 models.
  • Page 4: Wiring Connection

    CQ-C8403U / CQ-C8303U 8 WIRING CONNECTION 8.1. CQ-C8403U...
  • Page 5 CQ-C8403U / CQ-C8303U 8.2. CQ-C8303U...
  • Page 6: Disassembly Instructions

    CQ-C8403U / CQ-C8303U 9 DISASSEMBLY INSTRUCTIONS 9.1. How to Remove the Flexible PCB(AP2)
  • Page 7 CQ-C8403U / CQ-C8303U 9.2. How to Install the Main P.C.B. of the Electric Display...
  • Page 8 CQ-C8403U / CQ-C8303U...
  • Page 9: Terminals Description

    CQ-C8403U / CQ-C8303U 10 TERMINALS DESCRIPTION 10.1. Main Block Port Description (I/O FM AM CD IC601 : C2CBKG000034 47 MOD0 Operating mode control 0 5.1 5.1 5.1 Port Description (I/O from Flash writer FM AM CD 48 MOD1 Operating mode control 1: 5.1 5.1 5.1...
  • Page 10 CQ-C8403U / CQ-C8303U Port Description (I/O Port Part Name & Description FM AM CD PADJ IO1/TXD Anode output pulse width 97 NC Not connected adjusting data 0 (Image 98 S LED Security LED drive data); or Serial data for Flash...
  • Page 11 CQ-C8403U / CQ-C8303U 10.3. CD Servo Block Port Part Name & Description FLASH A7 A7 in Address bus IC101 : YESAM337 FLASH A6 A6 in Address bus Pin No. Port Descriptions FLASH A5 A5 in Address bus AVSS FLASH A4...
  • Page 12: Ic Block Diagram

    CQ-C8403U / CQ-C8303U 11 IC BLOCK DIAGRAM 11.1. Main Block IC730 : C0DAEKG00002 IC701 : C0DAZHF00004 IC201 : C1BB00000796 IC755 : C0DBZGD00040 IC670 : C0JBAZ000904...
  • Page 13 CQ-C8403U / CQ-C8303U 11.2. CD Servo Block IC401,403 : YESAM341 IC760 : C0GBG0000032 IC402 : YESAM342...
  • Page 14: Packing Parts List

    CQ-C8403U / CQ-C8303U 12 PACKING PARTS LIST • • • • Item numbers listed below should not order regular spare parts. (not available) Item No. Part No. Part Name & Description Q´ty Remarks Inner Carton Not available Polyethylene Bag Not available...
  • Page 15: Replacement Parts List(Unit)

    D631 YEADUDZS56BT Diode follows : D632 MA3X152D0L Diode • • • • A : CQ-C8403U D635 YEADUDZS56BT Diode • • • • B : CQ-C8303U D636 YEADUDZS56BT Diode D637 YEADUDZS56BT Diode Ref. No. Part No. Part Name & Description Remarks...
  • Page 16 CQ-C8403U / CQ-C8303U Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks F1J1E273A002 Ceramic, 0.027µF 25WV C372 F1J1H472A675 Ceramic, 4700PF 50WV F1J1E273A002 Ceramic, 0.027µF 25WV C374 F2A1H2R20044 Electrolytic, 2.2µF 50WV F1J1H1020024...
  • Page 17 CQ-C8403U / CQ-C8303U Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C773 F1J1H271A025 Ceramic, 270PF 50WV J579 ERJ8GEY0R00V Chip, 0Ω 1/8W C774 EEEFK1E101P Electrolytic, 100PF 25WV J580 ERJ8GX0R00V Chip, 0Ω 1/8W...
  • Page 18 CQ-C8403U / CQ-C8303U Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R336 ERJ3GEYJ271V Chip, 270Ω 1/16W T, A R605 ERJ3GEYJ102V Chip, 1kΩ 1/16W R336 ERJ3GEYJ181V Chip, 180Ω 1/16W T, B...
  • Page 19 CQ-C8403U / CQ-C8303U Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R755 ERJ6GEYJ102V Chip, 1kΩ 1/10W R760 ERJ6GEYJ152V Chip, 1.5kΩ 1/10W THERMISTORs R761 ERDS1FJ3R9V Carbon, 3.9Ω 1/2W PT701 D4DA74R70003 Thermistor R770 ERJ6GEY0R00V Chip, 0Ω...
  • Page 20 CQ-C8403U / CQ-C8303U Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C928 F1H1C104A005 Ceramic, 0.1µF 16WV SW904 K9AA024A0013 Switch C929 F1H1C104A005 Ceramic, 0.1µF 16WV SW905 K0H1BA000445 Switch SW906 K0H1BA000445 Switch...
  • Page 21 CQ-C8403U / CQ-C8303U Ref. No. Part No. Part Name & Description Remarks YEFJ013031 Dec Board(L) T, B YEFJ013029 Dec Board(R) T, A YEFJ013032 Dec Board(R) T, B YEFJ013034 Acryl Panel T, A YEFJ013087 Acryl Panel T, B YEFM991737 Double Face Tape...
  • Page 22: Exploded View (Unit)

    CQ-C8403U / CQ-C8303U 14 EXPLODED VIEW (Unit)
  • Page 23: Cd Player Parts List

    CQ-C8403U / CQ-C8303U 15 CD PLAYER PARTS LIST Ref. No. Part No. Part Name & Description Remarks C228 YESCC439 Ceramic, 0.1µF 25WV C229 YESCC439 Ceramic, 0.1µF 25WV Notes : C230 YESCC442 Ceramic, 0.01µF 50WV C231 YESCC442 Ceramic, 0.01µF 50WV 1. Be sure to make your orders of replacement parts...
  • Page 24 CQ-C8403U / CQ-C8303U Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R201 YESRG224 Chip, 100kΩ 1/10W R202 YESRG355 Chip, 1MΩ 1/10W MECAHNICAL PARTS R203 ERJ3GEY0R00V Chip, 0Ω 1/16W MISCELLANEOUS R204 ERJ3GEY0R00V Chip, 0Ω...
  • Page 25 CQ-C8403U / CQ-C8303U Ref. No. Part No. Part Name & Description Remarks YERJS01004 Camera Tapping Screw, 1.7*5 YESJS01148 Screw, 2*4 YERJW01001 P Washer, 3.5*8*0.3 YERJW01002 HL Washer, 1.85*5*0.13 YERJW01003 Lumilar Washer, 3.1*6*0.1 YEJE01028 E-Ring S 1.5 YERJW01005 P Washer, 2.1*4*0.13...
  • Page 26: Exploded View (Cd Deck)

    CQ-C8403U / CQ-C8303U 16 EXPLODED VIEW (CD Deck)
  • Page 27: Wiring Diagram

    CQ-C8403U / CQ-C8303U 17 WIRING DIAGRAM 17.1. Display Block...
  • Page 28 CQ-C8403U / CQ-C8303U 17.2. Main/Sub Block (Top View)
  • Page 29 CQ-C8403U / CQ-C8303U 17.3. Main/Sub Block (Bottom View)
  • Page 30 CQ-C8403U / CQ-C8303U 17.4. CD Servo Block (Top View)
  • Page 31 CQ-C8403U / CQ-C8303U 17.5. CD Servo Block (Bottom View)
  • Page 32: Schematic Diagram-1

    CQ-C8403U / CQ-C8303U 18 SCHEMATIC DIAGRAM-1 18.1. Sub Block [CQ-C8403U Only]...
  • Page 33 CQ-C8403U / CQ-C8303U 19 SCHEMATIC DIAGRAM-2 19.1. Main-1 Block...
  • Page 34 CQ-C8403U / CQ-C8303U 19.2. Main-2 Block...
  • Page 35 CQ-C8403U / CQ-C8303U 19.3. Display Block...
  • Page 36 CQ-C8403U / CQ-C8303U 19.4. CD Servo Block 3032-14-35 0.5V/DIV,0.1µs/DIV 3.3V 3.3V YESAM343 2V/DIV,1ms/DIV 2V/DIV,5ms/DIV YESAN086 YESAM337 2V/DIV,5ms/DIV 3.3V YESAN116 B1GDCFJJ008 YESAM342 YESAN116 3.3V 3.3V MAIN CN651 3.3V 3.3V YESAM341 YESAM339 YESAM341 The following symbols are shown on the schematic diagram.
  • Page 37: Block Diagram

    CQ-C8403U / CQ-C8303U 20 BLOCK DIAGRAM 20.1. Main-1/Sub Block...
  • Page 38 CQ-C8403U / CQ-C8303U 20.2. Main-2 Block...
  • Page 39 CQ-C8403U / CQ-C8303U 20.3. Display Block...
  • Page 40 CQ-C8403U / CQ-C8303U 20.4. CD Servo Block...
  • Page 41: Schematic Diagram-2

    19 SCHEMATIC DIAGRAM-2 19.1. Main-1 Block...
  • Page 42 CQ-C8403U / CQ-C8303U...
  • Page 43 CQ-C8403U / CQ-C8303U 19.2. Main-2 Block...
  • Page 45 19.3. Display Block...
  • Page 46 CQ-C8403U / CQ-C8303U...
  • Page 47 CQ-C8403U / CQ-C8303U 19.4. CD Servo Block 3032-14-35 YESAM343 YESAN086 YESAN1 B1GDCFJJ008 YESAN116 YESAM339 The following symbols are shown on the schematic diagram. 3.3V 3.3V CD(L,R)
  • Page 48 2-14-35 0.5V/DIV,0.1µs/DIV 3.3V 3.3V 2V/DIV,1ms/DIV 2V/DIV,5ms/DIV YESAM337 2V/DIV,5ms/DIV 3.3V YESAN116 B1GDCFJJ008 YESAM342 YESAN116 3.3V 3.3V MAIN CN651 3.3V 3.3V YESAM341 YESAM341 CQ-C8403U/C8303U CD DECK...

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