Panasonic CQ-C8401W User manual

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
Equalizer Center Frequency 60, 160, 400, 1k, 3k, 6k, 16k (Hz)
Variable Range of Equalizer -12dB to 12dB (2dB step)
Current Consumption Less than 2.2A
(CD mode; 0.5W × 4-speaker)
Maximum Power Output
<CQ-C8401W> 60W × 4(at 4Ω)
<CQ-C7401W> 50W × 4(at 4Ω)
Speaker Impedance 4-8Ω
Pre-amp Output Voltage 5V
Subwoofer Output Voltage 5V
Pre-amp Output Impedance 60Ω
Subwoofer Output Impedance 60Ω
CD Player
Sampling Frequency 8 Times Oversampling
Pick-up Type Astigma 3-Beam
Light Source Semiconductor Laser
Wave Length 790 nm
Frequency Response 20Hz-20kHz (±1dB)
© 2005 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
CQ-C8401W
CQ-C7401W
WMA MP3 CD Player/Receiver with Full
Dot Matrix Display
Signal to Noise Ratio 96dB
Total Harmonic Distortion 0.01% (1kHz)
Wow and Flutter Below Measurable Limits
Channel Separation 75dB
FM Stereo Radio
Frequency Range 87.5MHz - 108MHz
Usable Sensitivity 6dB/µV (S/N 30dB)
Stereo Separation 35dB (at 1kHz)
AM Radio
Frequency Range 531kHz - 1,602kHz
Usable Sensitivity 28dB/µV (S/N 20dB)
Dimensions (W×H×D)** 178×50×155mm
Weight** 1.6Kg
* 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.
AUTOMOTIVE AFTERMARKET
Specifications*
ORDER NO. ACED050309C3

1 ABOUT LEAD FREE SOLDER (PbF) 3
2 FEATURES 3
3 REPLACEING THE FUSE 3
4 MAINTENANCE 3
5 NOTES 3
6 DIMENSIONS 3
7 LASER PRODUCTS 3
8 WIRING CONNECTION 4
9 BLOCK DIAGRAM 6
10 DISASSEMBLY INSTRUCTIONS 10
11 TERMINALS DESCRIPTION 13
12 IC BLOCK DIAGRAM 17
13 REPLACEMENT PARTS LIST 21
14 EXPLODED VIEW (Unit) 27
15 CD PLAYER PARTS LIST 28
16 EXPLODED VIEW (CD PLAYER) 31
17 WIRING DIAGRAM 32
18 SCHEMATIC DIAGRAM-1 38
19 SCHEMATIC DIAGRAM-2 39
CONTENTS
Page Page
2
CQ-C8401W / CQ-C7401W

1 ABOUT LEAD FREE
SOLDER (PbF)
Distinction of PbF PCB:
PCBs (manufactured) using lead free solder will have a PbF
stamp on the PCB.
Caution :
• • •
• Pb free solder has a higher melting point than standard
solder; Typically the melting point is 50 - 70°F (30 -
40°C) higher. Please use a soldering iron with
temperature control and adjust it to 700 ± 20°F (370 ±
10°C). In case of using high temperature soldering iron,
please be careful not to heat too long.
• • •
• Pb free solder will tend to splash when heated too high
(about 1100°F/600°C)
• • •
• This lead free solder will be used for the products after
serial No. 1,000,001.
2 FEATURES
• • •
• MP3/WMA Playback from CD-R/RW
• • •
• Fully Motorized Front Panel
• • •
• Six Preset Modes (FLAT, ROCK, POP, VOCAL, JAZZ,
CLUB)
• • •
• SQ7 (7 Bands Sound Quality)
• • •
• DVD Changer Control
• • •
• Delightful sound space thanks to system buildup
• • •
• Differences Among 2 Models
3 REPLACEING THE FUSE
Use fuses of the same specified rating 15 amps. Using different
substitutes or fuses with higher ratings, or connecting the unit
directly without a fuse, could cause fire or damage to the stereo
unit.
4 MAINTENANCE
Your products is designed and manufactured to ensure a
minimum of maintenance. Use a soft cloth for routine exterior
cleaning. Never use benzine, thinner or other solvent.
5 NOTES
[RADIO BLOCK]
Do not align the AM/FM package block. When the package
block is necessary, it will be supplied already aligned at the
factory.
[CD DECK BLOCK]
This model has no servo alignment points because
microcomputer controls the servo circuit
6 DIMENSIONS
7 LASER PRODUCTS
3
CQ-C8401W / CQ-C7401W

8 WIRING CONNECTION
8.1. CQ-C8401W
4
CQ-C8401W / CQ-C7401W

8.2. CQ-C7401W
5
CQ-C8401W / CQ-C7401W

9 BLOCK DIAGRAM
9.1. Main-1 Block [CQ-C8401W]
6
CQ-C8401W / CQ-C7401W

9.2. Main-1 Block [CQ-C7401W]
7
CQ-C8401W / CQ-C7401W

9.3. Main-2/Display Block
8
CQ-C8401W / CQ-C7401W

9.4. CD Servo Block
9
CQ-C8401W / CQ-C7401W

10 DISASSEMBLY INSTRUCTIONS
10.1. How to Remove the Flexible PCB(AP2)
10
CQ-C8401W / CQ-C7401W