1 Service Navigation ----------------------------------------------- 2
2 Specifications ----------------------------------------------------- 3
3 Features ------------------------------------------------------------- 4
4 T ec hnic al Desc ri ptions----------------------------------------- 5
5 Block Diagram----------------------------------------------------- 8
6 Wiring Connection Diagram---------------------------------- 9
7 Schematic Diagram---------------------------------------------10
8 Schematic Diagram -2 -----------------------------------------14
9 Printed Circuit Board-------------------------------------------15
10 Exploded View and Replacement Parts List -----------19
11 Schematic Diagram for Printing with Letter Size-----34
• PCBs (manufactured) using lead free solder will have a Pb F
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.
1.2.Laser Products
1.4.Maintenance
Your product is designed and manufactured to ensure a minimum of maintenance. Use a dry, a soft cloth for routine exterior
cleaning. Never use benzine, thinner or other solvents.
1.5.Notes
[RADIO BLOCK]
Do not align the AM/FM package block. When the package
block is necessary, it will be supplied alrea dy alig ned at the factory.
[CD DECK BLOCK]
This model has no servo alignment points because microcomputer controls the servo circuit.
1.3.Replacing the Fuse
Use fuses of the same s pe cif ied rati ng 15 a mps. Using different
substitutes or fuses with higher ratings, or connecting the unit
directly without a fu se, could cause fire or damage to th e st ere o
unit.
2
2Specifications
2.1.Specifications*
General
Power SupplyDC 12V (11V - 16V)
Current ConsumptionLess than 2.1A (CD mode, 0.5W 4
Maximum Power Output50W × 4 (at 1kHz), volume control
Weight**1.3 kg {2 lbs. 14oz}
Front AUX Input
Input Impedance
Allowable External Input
Connector
Disc Player
Sampling Frequency8 times Oversampling
DA Converter1 bit DAC System
Pick-Up TypeAstigma 3-beam
Light SourceSemiconductor Laser
Wave Length790 nm
Frequency Response20 Hz - 20 kHz (±1 dB)
Signal to Noise Ratio96 dB
Total Harmonic Distortion0.01 % (1 kHz)
Wow and FlutterBelow Measurable Limits
Channel Separation75 dB
Test Voltage 14.4V
Negative Ground
channels)
maximum
Treble: ±12 dB at 10kHz
{7” × 1-15/16” × 6-2/16”}
10 kΩ
2.0 V
3.5 mm Stereo mini-pin
2.2.Dimensions
FM Stereo Radio
Frequency Range87.9 MHz - 107.9 MHz
Usable Sensitivity10.2 dBf (0.9 µV, 75 Ω)
50 dB Quieting Sensitivity15.2 dBf (1.6 µV, 75Ω)
Frequency Response30 Hz - 15 kHz (±3 dB)
Alternate Channel Selectivity 75 dB
Stereo Separation35 dB (at 1 kHz)
Image Rejection Ratio55 dB
IF Rejection Ratio100 dB
Signal to Noise Ratio62 dB
* 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.
3
3Features
• SQ (Sound Quality).
• The AUX input terminal is equipped on the front panel.
• MP3/WMA Playback from CD-R/RW.
• Anti-Theft System.
• This manual is for 4 models CQ-C1335U, CQ-C1305U, CQ1335L and CQ-C1305L. The following table describes the
differences between 4 models.
4
4Technical Descriptions
4.1.Terminals Description
4.1.1.Main Block
IC601 : YESAM386
Pin NoPortDes criptionI/OVol. (V)
FM AM CD
1 XINCrystal ocillator (4.5MHz)I2.5 2.52.5
2TEST2GND- 0 0 0
3 VREGConnected with capacitor-333
4 VSSCPUGND-000
5 LCD DOSerial data from LCDI555
6 LCD DISerial data to LCDO555
7 LCD SCKSerial data to LCDO5.15.1 5.1
8 LCD CEChip enable for LCD CPU O000.3
9 PANELFront panel detectionI555
10 POWER LED Power LED driveO000
11 MODE BR otary encoder detection
12 MODE ARotary encoder detection
13 CD DOSerial data from CDI5.1 5.14.8
14 CD DISerial data to CDO005
15 CD CLKSerial clock for CDO555
16 CD CECD chip enableO001.3
17 CD EMEjecting mode for Sled
18 CD LMLoading mode for Sled
19 CD S/LSleding/Loading mode
20 SUB READY Sub ready from CD servoI5.15.15
21 CD IN SW1 CD detection switch 1I000
22 CD SW2CD detection switch 2I000
23 CD LIMIT SWCD limit detection switchI5.1 5.15.1
24 CD MUTECD muteI0.20.2 5.1
25 CD RSTCD resetO555
26 CD DMUTE Mute for Pick-up driverO005.1
27 CD ERROR CD error statusI000
28 REG READY
51 ANT CNTNot connected-5.15.1 5.1
52 TEL MUTETelephone muteI5.15.1 5.1
53 BATTBattery level detectionI5.15.1 5.1
54 NCNot connected---55 AMP MUTE Mute for Power amplifierO5.15.1 5.1
56 STBYStandby mode for Power
57 NCNot connected---58 AF MUTEAudio signal muteO5.15.1 5.1
59 I2C DATASerial data for Electronic
70 REM INRemote control dataI555
71 NCNot connected---72 NCNot connected---73 NCNot connected---74 MONOMonaural modeO000
75 AM MODEPower supply control for