9441 Panasonic SA-AK450P 450PC Sistema de Sonido Con CD Casette Manual de Servicio

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ORDER NO. MD0703005CE A6 CD Stereo System SA-AK450P SA-AK450PC Colour (K)... Black Type Notes: This model’s CD mechanism changer unit is CRS1. Please refer to the original Service Manual (Order No. MD0509368C0) for this mechanism. Specifications n AMPLIFIER SECTION Sensitivity FTC output power S/N 26 dB THD 10%, both channels driven Antenna terminal(s) 50 Hz to 3 kHz Amplitude Modulation (AM) 95 W per channel (3 Ω) (Low channel) 3 kHz to 12 kHz 95 W per channel (3 Ω) Total FTC Bi-A
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  n AMPLIFIER SECTION FTC output power THD 10%, both channels driven50 Hz to 3 kHz(Low channel) 95 W per channel (3 Ω )3 kHz to 12 kHz(High channel) 95 W per channel (3 Ω )Total FTC Bi-Amp power 380 WRMS output power THD 10%, both channels driven1 kHz(Low channel) 115 W per channel (3 Ω )10 kHz(High channel) 115 W per channel (3 Ω )Total Bi-Amp power 460 W n FM/AM TUNER, TERMINALS SECTION Preset station FM 20 stations AM 15 stationsFrequency Modulation (FM)Frequency range 87.9 to 107.9 MHz (200 kHzsteps)87.5 to 108.0 MHz (100 kHzsteps) © 2007 Matsushita Electric Industrial Co. Ltd.. Allrights reserved. Unauthorized copying anddistribution is a violation of law. SA-AK450PSA-AK450PC Colour (K)... Black Type Sensitivity 4.0 µV (IHF)S/N 26 dB 2.2 µV Antenna terminal(s) 75 Ω (unbalanced) Amplitude Modulation (AM)Frequency range 520 to 1710 kHz (10 kHz step)SensitivityS/N 20 dB (at 1000 kHz) 560 µV/mMusic Port input jackTerminal Stereo, 3.5 mm (1/8”) jackSensitivity 100 mV, 4.7 k Ω Phone jackTerminal Stereo, 3.5 mm (1/8”) jackXM ready XM mini Tuner and Home Dock n CASSETTE DECK SECTION Track system 4 track, 2 channelHeadsRecord/playback Solid permalloy headErasure Double gap ferrite headMotor DC servo motor Recording system AC bias 100 kHzErase system AC erase 100 kHzTape speed 4.8 cm/s (1-7/8 ips)Overall frequency response (+3, -6 dB) at DECK OUT CD Stereo System Notes: This model’s CD mechanism changer unit is CRS1. Please refer to the srcinal Service Manual(Order No. MD0509368C0) for this mechanism. Specifications ORDER NO. MD0703005CE A6  NORMAL 35 Hz to 14 kHzS/N ratio 50 dB (A weighted)Wow and flutter 0.18 % (WRMS)Fast forward and rewind time Approx. 120 seconds withC-60 cassette tape n DISC SECTION Disc played [8 cm (3”) or 12 cm (5”)](1) CD-Audio (CD-DA)(2) CD-R/RW (CD-DA, MP3* formatted disc)(3) MP3**MPEG-1 Layer 3, MPEG-2 Layer 3Bit rateMP3 32 kbps to 320 kbpsSampling frequencyMP3 32 kHz, 44.1 kHz, 48 kHzCD-DA 44.1 kHzDecoding 16 bit linear Digital filter 8 fsD/A converter MASH (1 bit DAC)Pick upWavelength 780 nmBeam Source Semiconductor laser  Audio output (Disc)Number of channels 2 (Stereo) (FL,FR) 1 Safety Precautions 4 1.1. General Guidelines 41.2. Before repair and adjustment 41.3. Protection Circuitry 51.4. Caution For Fuse Replacement 51.5. Safety Part Information 5 2 Prevention of Electro Static Discharge (ESD) toElectrostatically Sensitive (ES) Devices 53 Handling Precautions For Traverse Deck 74 Precaution of laser diode 95 Warning 10 5.1. Service caution based on legal restrictions 10 6 Accessories 117 Operation Procedures 12 7.1. Main Unit Key Buttons Operations 127.2. Remote Control Key Buttons Operations 12 8 New Features 14 8.1. Using the Music Port 148.2. Using XM ョ Satellite Radio 158.3. Using IPod 17 9 Self diagnosis and special mode setting 19 n OPTION PORT SECTION Option Port Version 1 n GENERAL Power supply AC 120 V, 60HzPower consumption 127 WPower consumption in standbymode0.28 W (Approx.)Dimensions (W x H x D) 250 x 330 x 323 mm(9-27/32” x 13” x 12-23/32”)Mass 7.1 kg (15.7 lb.)Operating temperature range +5 to +35°C (+41 to +95°F)Operating humidity range 5 to 90% RH (no condensation) n SYSTEM SC-AK450 (P) Music center: SA-AK450 (P)Speakers: SB-AK450 (P)SC-AK450 (PC) Music center: SA-AK450 (PC)Speakers: SB-AK450 (PC)For information on speaker system, please refer to the srcinalService Manual (Order No. MD0703006CE) for SB-AK450P/PC-K. Notes: 1. Specifications are subject to change without notice. Mass anddimensions are approximate.2. Total harmonic distortion is measured by the digital spectrumanalyzer.9.1. Service Mode Summary Table 199.2. Special Mode Table 1 199.3. Reliability Test Mode (CRS1 Mechanism) 229.4. Error code Table Display 239.5. XM Satellite Radio Code Table 26 10 Assembling and Disassembling 27 10.1. Caution 2710.2. Disassembly flow chart 2810.3. Main Parts Location 2910.4. Disassembly of Top Cabinet 3010.5. Disassembly of CD Changer Unit (CRS1) 3010.6. Disassembly of Rear Panel Block 3110.7. Disassembly of Main P.C.B. 3310.8. Disassembly of Transformer P.C.B. 3310.9. Disassembly of Power P.C.B. 3410.10. Disassembly of Front Panel Unit 3510.11. Disassembly for Panel P.C.B. 3610.12. Disassembly of Tact Switch P.C.B. 3710.13. Disassembly of Deck mechanism unit 3710.14. Disassembly of Deck P.C.B. 3810.15. Disassembly of Traverse Unit 38 CONTENTS Page Page 2 SA-AK450P / SA-AK450PC  10.16. Disassembly for Deck Mechanism 3910.17. Disassembly of Deck Mechanism P.C.B. 4210.18. Disassembly of cassette lid 4310.19. Rectification for tape jam problem 43 11 Service Fixture and Tools 4512 Service Positions 45 12.1. Checking and Repairing of Main P.C.B. 4512.2. Checking and Repairing of Transformer P.C.B. 4612.3. Checking and Repairing of Panel, Deck & DeckMechanism P.C.B. 4612.4. Checking and Repairing of Power P.C.B. 47 13 Procedure for Checking Operation of Individual Parts of DeckMechanism Unit 48 13.1. Operation Check with Cassette Tape 4813.2. Operation Check without Cassette Tape 48 14 Measurement And Adjustments 50 14.1. Cassette Deck Section 50 15 Voltage and Waveform Chart 52 15.1. CD Servo P.C.B. 5215.2. Deck P.C.B. 5215.3. Main P.C.B. 5315.4. Panel P.C.B. 5315.5. Power P.C.B. & Transformer P.C.B. 5415.6. XM P.C.B. 5415.7. Waveform Chart 55 16 Wiring Connection Diagram 5617 Block Diagram 57 17.1. CD Servo Diagram 5717.2. Deck/ Deck Mechanism Diagram 5817.3. D-Port/ Main Diagram 5917.4. Panel Diagram 6117.5. Power Diagram 6217.6. XM/ Transformer Diagram 63 18 Notes Of Schematic Diagram 6519 Schematic Diagram 67 19.1. (A) CD Servo Circuit 6719.2. (B) XM Module Circuit 6819.3. (C) Main Circuit 6919.4. (D) Panel Circuit 7319.5. (E) Sub Panel Circuit, (F) D-Port Circuit & (I) DeckMechanism Circuit 7419.6. (G) Power Circuit 7519.7. (H) Deck Circuit 7719.8. (J) Transformer Circuit 78 20 Printed Circuit Board 79 20.1. (A) CD Servo P.C.B., (H) Deck P.C.B. & (I) DeckMechanism P.C.B. 8020.2. (C) Main P.C.B. 8120.3. (D) Panel P.C.B. 8220.4. (B) XM Module P.C.B. (Side A & B), (E) Sub Panel P.C.B.& (F) D-Port P.C.B. 8320.5. (G) Power P.C.B. 8420.6. (J) Transformer P.C.B. 85 21 Illustration of ICs, Transistors and Diodes 8722 Terminal Function of IC's 88 22.1. IC7001 (MN6627954MA) Servo Processor,Digital SignalProcessor/Digital filter and D/A Converter 8822.2. IC7003 (BA5948FPE2) IC 4CH Drive 8922.3. IC2801 (C2CBYY000424) System Microprocessor 89 23 Exploded Views 91 23.1. Cabinet Parts Location 9123.2. Deck Mechanism Parts Locations (RAA4403-S) 9323.3. Packaging 94 24 Replacement Parts List 95 3 SA-AK450P / SA-AK450PC  1 Safety Precautions 1.1. General Guidelines 1. When servicing, observe the srcinal lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.2. After servicing, ensure that all the protective devices such as insulation barriers and insulation papers shields are properlyinstalled.3. After servicing, check for leakage current checks to prevent from being exposed to shock hazards.(This “Safety Precaution” is applied only in U.S.A.)1. Before servicing, unplug the power cord to prevent an electric shock.2. When replacing parts, use only manufacturer’s recommended components for safety.3. Check the condition of the power cord. Replace if wear or damage is evident.4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.5. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to prevent thecustomer from being exposed to a shock hazard. 1.1.1. Leakage Current Cold Check 1. Unplug the AC cord and connect a jumper between the two prongs on the plug.2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part onthe equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to thechassis, the reading should be between 1M Ω and 5.2M Ω .When the exposed metal does not have a return path to the chassis, the reading must be . 1.1.2. Leakage Current Hot Check (See Figure 1) 1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.2. Connect a 1.5k Ω , 10 watts resistor, in parallel with a 0.15µF capacitor, between each exposed metallic part on the set and agood earth ground such as a water pipe, as shown in Figure 1.3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.4. Check each exposed metallic part, and measure the voltage at each point.5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) maybe used to make the hot checks, leakage current must not exceed 1/2 milliamp. Should the measurement is out of the limitsspecified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned tothe customer. Fig. 1 1.2. Before repair and adjustment Disconnect AC power, discharge Power Capacitors C5101, C5104, C5171, C5172, C5920, C5940 and C5950 through a 10 Ω , 5Wresistor to ground.DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent.Current consumption at AC 120V, 60 Hz in NO SIGNAL mode (volume min at CD mode) should be ~ 500mA.4 SA-AK450P / SA-AK450PC
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