Panasonic-SAAKX220P-cs-sm 电路图 维修手册.pdf

《Panasonic-SAAKX220P-cs-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Panasonic-SAAKX220P-cs-sm 电路图 维修手册.pdf（73页珍藏版）》请在收音机爱好者资料库上搜索。

1、 Panasonic Corporation 2016. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1601001CE CD Stereo System Model No.SA-AKX220PN SA-AKX220PS SA-AKX440PN SA-AKX440PS Product Color: (K).Black Type (W).White Type (For SA-AKX220) TABLE OF CONTENTS PAGEPAGE 1 Safety Preca

2、utions- 3 1.1. General Guidelines- 3 1.2. Before Repair and Adjustment- 4 1.3. Protection Circuitry- 4 1.4. Power Supply using SMPS Module- 4 1.5. Safety Parts Information- 7 2 Warning- 8 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices- 8 2.2. Precaution

3、of Laser Diode- 8 2.3. General description about Lead Free Solder (PbF)- 9 2.4. Handling Precautions for Traverse Unit- 9 2.5. Grounding for electrostatic breakdown prevention- 10 3 Service Navigation - 11 3.1. Service Information- 11 4 Specifications- 12 5 Location of Controls and Components- 13 5.

4、1. Remote Control Key Button Operation - 13 5.2. Main Unit Key Button Operation- 14 6 Service Mode- 16 6.1. Cold-Start - 16 6.2. Sales Demonstration Lock Function - 16 6.3. Doctor Mode Table- 17 6.4. Self-Diagnostic Mode - 19 Please refer to the original service manual for: ? ? CD Mechanism Unit (BR

5、S12C) , Order No. PSG1303059AE ? ? Speaker system SB-AKX220PN, Order No. PSG1601002CE ? ? Speaker system SB-AKX440PN, Order No. PSG1601002CE RadioFans.CN 收音机爱 好者资料库 2 6.5. Self-Diagnostic Error Code Table -19 7 Troubleshooting Guide-21 7.1. No Power or No Display-21 7.2. Bluetooth Pairing Failure-21

6、 7.3. No Key Function-21 7.4. No Remote Control Function-22 7.5. USB Device Cannot Detect-22 7.6. No Output Sound-23 7.7. Check Point-24 8 Disassembly and Assembly Instructions-26 8.1. Types of Screws-26 8.2. Disassembly Flow Chart-27 8.3. Main Components and P.C.B. Locations-27 8.4. Disassembly of

7、Top Cabinet-28 8.5. Disassembly of Front Panel Unit-28 8.6. Disassembly of Panel P.C.B.-29 8.7. Disassembly of USB P.C.B. -30 8.8. Disassembly of Music Port P.C.B. (For AKX440)-30 8.9. Disassembly of Rear Panel-30 8.10. Disassembly of Main P.C.B.-31 8.11. Disassembly of SMPS Module -32 8.12. Disasse

8、mbly of CD Mechanism Unit-32 8.13. Disassembly of CD Interface P.C.B.-34 9 Service Position-35 9.1. Checking of Panel P.C.B. and Main P.C.B.-35 9.2. Checking of SMPS Module -35 10 Block Diagram -37 10.1. System Control -37 10.2. Audio -39 10.3. Power Supply -40 11 Wiring Connection Diagram-41 12 Sch

9、ematic Diagram-43 12.1. Schematic Diagram Notes-43 12.2. Main (Micon) Circuit (1/3) -45 12.3. Main (Micon) Circuit (2/3) -46 12.4. Main (Micon) Circuit (3/3) -47 12.5. Main (USB) Circuit-48 12.6. Main (Tuner AUX) Circuit -49 12.7. Main (DSP Bluetooth) Circuit -50 12.8. Main (Damp) Circuit -51 12.9.

10、Main (Voltage Regulator) Circuit -52 12.10. Panel Circuit-53 12.11. USB, CD Interface and Music Port Circuit-54 13 Printed Circuit Board -55 13.1. Main P.C.B. -55 13.2. Panel, USB P.C.B., CD Interface P.C.B. (For AKX220PN/PS, AKX440PN/PS) and Music Port P.C.B (For AKX440PN/PS)-56 14 Voltage and Wave

11、form Measurement -57 14.1. Voltage Measurement-57 15 Exploded View and Replacement Parts List-61 15.1. Cabinet Parts Location 1-61 15.2. Cabinet Parts Location 2-62 15.3. Packaging (For SC-AKX220PN/PS) -63 15.4. Packaging (For SC-AKX440PN/PS) -64 15.5. Mechanical Replacement Part List -65 15.6. Elec

12、trical Replacement Parts List-67 RadioFans.CN 收音机爱 好者资料库 3 1Safety Precautions 1.1.General Guidelines 1. IMPORTANT SAFETY NOTICE There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Circuit Board Layout, Exploded Vie

13、ws and Replacement Parts List. It is essential that these critical parts should be replaced with manufacturers specified parts to prevent X-RADIATION, shock, fire, or other hazards. Do not modify the original design without permission of manufacturer. 2. An Isolation Transformer should always be use

14、d during the servicing of AC Adaptor whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect AC Adaptor from being damaged by accidental s

15、horting that may occur during servicing. 3. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 4. After servicing, see to it that all the protective devices such as insulation barriers, insulatio

16、n papers shields are properly installed. 5. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards. 1.1.1.Leakage Current Cold Check 1. Unplug the AC cord and connect a jumper between the two prongs on the plug. 2. Measure the resistanc

17、e value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1M and 5.2M. When the exposed metal does

18、 not have a return path to the chassis, the reading must be 1.1.2.Leakage Current Hot Check 1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check. 2. Connect a 1.5k, 10 watts resistor, in parallel with a 0.15F capacitors, between each exposed metallic pa

19、rt on the set and a good earth ground such as a water pipe, as shown in Figure 1-1. 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

20、 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) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the l

21、imits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer. Figure 1-1 RadioFans.CN 收音机爱 好者资料库 4 1.2.Before Repair and Adjustment Disconnect AC power to discharge AC capacitor (in SMPS Module) as indicate below

22、diagram through a 10 , 10 W resistor to ground. Figure 1-2 Caution: 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 120

23、 V, 60 Hz in Power ON, FM Tuner at volume minimal mode should be 350 mA (AKX220PN/ AKX440PN). Current consumption at AC 220240 V, 50/60 Hz in Power ON, FM Tuner at volume minimal mode should be 350 mA (AKX220PS/AKX440PS). 1.3.Protection Circuitry The protection circuitry may have operated if either

24、of the following conditions are noticed: No sound is heard when the power is turned on. Sound stops during a performance. The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are “shorted”, or if speaker systems with an imp

25、edance less than the indicated rated impedance of the amplifier are used. If this occurs, follow the procedure outlines below: 1. Turn off the power. 2. Determine the cause of the problem and correct it. 3. Turn on the power once again after one minute. Note: When the protection circuitry functions,

26、 the unit will not operate unless the power is first turned off and then on again. 1.4.Power Supply using SMPS Module This model uses Switching Mode Power Supply (SMPS Module) to provide the power supply to the unit. Here is the supplied part no. for the SMPS Module 1) N0AB1GK00001 (For SA-AKX220PN)

27、 3) N0AD1GK00003 (For SA-AKX220PS) 2) N0AB1GL00001 (For SA-AKX440PN) 4) N0AD1GL00001 (For SA-AKX440PS) 5 1.4.1.How to Identify SMPS Figure 1-3 1.4.2.For SA-AKX220PN Figure 1-4 1.4.3.For SA-AKX220PS Figure 1-5 6 1.4.4.For SA-AKX440PN Figure 1-6 1.4.5.For SA-AKX440PS Figure 1-7 7 1.5.Safety Parts Info

28、rmation Safety Parts List: There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these critical parts should be replaced with manufacturers specified parts

29、to prevent shock, fire or other hazards. Do not modify the original design without permission of manufacturer. SafetyRef No.Part No.Part Name & DescriptionRemarks 12RGR0473A-PBREAR PANELAKX220PN 12RGR0473A-QBREAR PANELAKX220PS 12RGR0473A-UBREAR PANELAKX440PN 12RGR0473A-VBREAR PANELAKX440PS 20RKM0764

30、-KTOP CABINETK 20RKM0764-WTOP CABINETW 301RAE1052Z-VTRAVERSE ASSY(E.S.D) A2K2CB2CB00022AC CORDPN A2K2CQ2YY00119AC CORDPS A3RQT0A55-MO/I BOOK (En/Sp)AKX220 A3RQT0A60-MO/I BOOK (Sp)AKX440 A3RQT0A61-BO/I BOOK (En)AKX440 PCB6N0AB1GK00001SMPS MODULEAKX220PN PCB6N0AB1GL00001SMPS MODULEAKX440PN PCB6N0AD1GK

31、00003SMPS MODULEAKX220PS PCB6N0AD1GL00001SMPS MODULEAKX440PS 8 2Warning 2.1.Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trosta

32、tically Sensitive (ES) Devices. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching

33、a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a co

34、nductive surface such as alumi- num foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD

35、 protected)” can generate electrical charge sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to

36、install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compara- ble conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to th

37、e chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing

38、 together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) suf- ficient to damage an ES device). 2.2.Precaution of Laser Diode Caution: This product utilizes a laser diode with the unit turned “on”, invisible laser radiation is emitted fr

39、om the pickup lens. Wavelength: 790 nm (CD) Maximum output radiation power from pickup: 100 W/VDE Laser radiation from the pickup unit is safety level, but be sure the followings: 1. Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous. 2. Do not adjust the varia

40、ble resistor on the pickup unit. It was already adjusted. 3. Do not look at the focus lens using optical instruments. 4. Recommend not to look at pickup lens for a long time. 9 Figure 2-1 2.3.General description about Lead Free Solder (PbF) The lead free solder has been used in the mounting process

41、of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation. The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin (Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86F) more than that of the normal solder. Definition of PCB Lead Free Solder being used Service caution for repair work using Lead Free Solder (PbF) The lead free solder has to be used when repairi