Panasonic-SAAKX80LM-cs-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2015. All rights reserved. Unauthorized copying and distribution is a violation of law. PMX1505001CE CD Stereo System Model No.SA-AKX80LM Product Color: (K).Black Type TABLE OF CONTENTS 1 Safety Precautions 1.1. General Guidelines 1.2. Before Repair and Adjustment 1.3. Protect

2、ion Circuitry 1.4. Power Supply using SMPS Module 1.5. Safety Parts Information 2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices 2.2. Precaution of Laser Diode 2.3. General description about Lead Free Solder (PbF) 2.4. Handling Precautions for Tr

3、averse Unit 2.5. Grounding for electrostatic breakdown prevention 3 Service Navigation 3.1. Service Information 4 Specifications 5 Location of Controls and Components 5.1. Remote Control Key Button Operation 5.2. Main Unit Key Button Operation Please refer to the original service manual for: CD Mech

4、anism Unit (BRS12C) , Order No. PSG1303059AE Speaker system SB-AKX16LM , Order No. PMX1505002CE RadioFans.CN 收音机爱 好者资料库 2 8.2. Disassembly Flow Chart 8.3. Main Components and P.C.B. Locations 8.4. Disassembly of Top Cabinet 8.5. Disassembly of Front Panel Unit 8.6. Disassembly of Panel P.C.B. and LC

5、D P.C.B. 8.7. Disassembly of Remote Sensor P.C.B. 8.8. Disassembly of USB P.C.B. 8.9. Disassembly of Rear Panel. 8.10. Disassembly of Main P.C.B. 8.11. Disassembly of CD Mechanism Unit 8.12. Disassembly of CD Interface P.C.B. 9 Service Position 9.1. Checking of Panel P.C.B. and LCD P.C.B. 9.2. Check

6、ing and Repairing of Main P.C.B. and SMPS Module 10 Block Diagram 10.1. Servo and System Control 10.2. Audio 10.3. Power Supply 11 Wiring Connection Diagram 12 Schematic Diagram 12.1. Schematic Diagram Notes 12.2. Main (CD Servo) Circuit (1/3) 12.3. Main (CD Servo) Circuit (2/3) 12.4. Main (CD Servo

7、) Circuit (3/3) 12.5. Main (Micon) Circuit (1/4) 12.6. Main (Micon) Circuit (2/4) 12.7. Main (Micon) Circuit (3/4) 12.8. Main (Micon) Circuit (4/4) 12.9. Main (Damp) Circuit 12.10. Panel, LCD, USB, Remote Sensor and CD Interface Circuit 13 Printed Circuit Board 13.1. Main P.C.B. (Side A) 13.2. Main

8、P.C.B. (Side B) 13.3. Panel, LCD, USB and Remote Sensor P.C.B. 13.4. CD Interface P.C.B. 14 Voltage and Waveform Measurement 14.1. Voltage Measurement 15 Exploded View and Replacement Parts List 15.1. Cabinet Parts Location 1 15.2. Cabinet Parts Location 2 15.3. Packaging (SC-AKX80) 15.4. Mechanical

9、 Replacement Part List 15.5. Electrical Replacement Parts List 6 Service Mode 6.1. Cold Start 6.2. Doctor Mode Table 6.3. Self-Diagnostic Mode 6.4. Self-Diagnostic Error Code Table 6.5. Sales Demonstration Lock Function 7 Troubleshooting Guide 8 Disassembly and Assembly Instructions 8.1. Type of Scr

10、ews 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 Views and Replacement Parts List

11、. 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 used during the servicing of AC

12、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 shorting that may occur during

13、 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, insulation papers shields are properly

14、 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 resistance value, with an ohmmeter, be

15、tween 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 not have a return path to th

16、e 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 part on the set and a good eart

17、h 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 AC outlet and repeat each of

18、 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 limits specified, there is a p

19、ossibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer. Figure 1-1 1.2.Before Repair and Adjustment Caution: DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs

20、are completed, restore power gradually using a variac to avoid overcurrent. Current consumption at AC 127 V, 60 Hz during Power ON in FM Tuner at volume minimal should be 250 mA. RadioFans.CN 收音机爱 好者资料库 4 1.3.Protection Circuitry The protection circuitry may have operated if either of the following

21、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 impedance less than

22、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, the unit will no

23、t 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 N0AB3GK00008 Disconnect AC power to discharge the

24、AC Capacitors (C2) through a 10 , 10 W resistor to ground. 1.4.2. Figure 1-3 5 1.5.Safety Parts Information 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 OPEN/CLOSE and CD key

25、for 5 sec or more. The display will show upon entering into this mode for 2 sec. Note: ;OPEN/CLOSE button is invalid and the main unit displays LOCKED while the lock function mode is entered. Cancellation of Sales Demonstration Lock Mode To cancel the sales demonstration lock mode. 1. Turn on the un

26、it. 2. Select to any mode function. 3. Set volume to Vol 19. 4. Press and hold ;OPEN/CLOSE and CD keys for 5 sec or more. The display will show upon entering into this mode for 2 sec. FL Display Key Operation Front Key Item DescriptionMode Name 17 7Troubleshooting Guide “Contents for this section is

27、 not available at time of issue” 18 8Disassembly and Assembly Instructions Caution Note: This section describes the disassembly and/or assembly procedures for all major printed circuit boards & main compo- nents for the unit. (You may refer to the section of “Main components and P.C.B Locations” as

28、described in the service manual) Before carrying out the disassembly process, please ensure all the safety precautions & procedures are followed. During the disassembly and/or assembly process, please handle with care as there may be chassis components with sharp edges. Avoid touching heatsinks due

29、to its high temperature after prolong use. (See caution as described below) During disassembly and assembly, please ensure proper service tools, equipments or jigs is being used. During replacement of component parts, please refer to the section of “Replacement Parts List” as described in the ser- v

30、ice manual. Select items from the following indexes when disassembly or replacement are required. Disassembly of Top Cabinet Disassembly of Front Panel Unit Disassembly of Panel P.C.B. and LCD P.C.B. Disassembly of Remote Sensor P.C.B. Disassembly of USB P.C.B. Disassembly of Rear Panel Disassembly

31、of Main P.C.B. Disassembly of SMPS Module Disassembly of CD Mechanism Unit Disassembly of CD Interface P.C.B. 8.1.Type of Screws RHD30007-K2JL RHD30119-SL RHD26046 RHD30111-31 RHDX031008 19 8.2.Disassembly Flow Chart l e naP r aeR 9.8t i nU l enaP t norF 5.8 8.10 Main P.C.B. 8.6 Panel P.C.B. and LCD

32、 P.C.B. 8.7 Remote Sensor P.C.B. 8.8 USB P.C.B. 8.12 CD Mechanism Unit 8.13 CD Interface P.C.B. 8.4 Top Cabinet 20 8.3.Main Components and P.C.B. Locations 21 8.4.Disassembly of Top Cabinet Step 1 Remove 2 screws on each side. Step 2 Remove 5 screws. Step 3 Release both sides of Top Cabinet as arrow

33、 shown. Step 4 Slightly lift up to remove Top Cabinet. 22 8.5.Disassembly of Front Panel Unit Refer to “Disassembly of Top Cabinet”. Step 1 Detach 5P Wire at connector (CN2002) on Main P.C.B. Step 2 Detach 17P FFC at connector (CN2000) on Main P.C.B. Step 3 Release tabs on both sides of Front Panel

34、Unit. Step 4 Release tabs at bottom of unit. 23 Step 5 Detach to remove Front Panel Unit 8.6.Disassembly of Panel P.C.B. and LCD P.C.B. Refer to “Disassembly of Top Cabinet”. Refer to “Disassembly of Front Panel Unit”. Step 1 Remove Volume Knob. Step 2 Remove 5 screws. 24 Step 3 Release catches in s

35、equences (1-6). Step 4 Slightly lift up Panel P.C.B. Step 5 Remove 2 screws. Step 6 Remove Panel P.C.B. and LCD P.C.B. 8.7.Disassembly of Remote Sensor P.C.B. Refer to “Disassembly of Top Cabinet”. Refer to “Disassembly of Front Panel Unit”. Refer to “Disassembly of Panel P.C.B. and LCD P.C.B. Step

36、1 Remove Remote Sensor P.C.B. 25 8.8.Disassembly of USB P.C.B. Refer to “Disassembly of Top Cabinet”. Refer to “Disassembly of Front Panel Unit”. Refer to “Disassembly of Panel P.C.B. and LCD P.C.B. Step 1 Remove screw. Step 2 Release catch. Step 3 Remove USB P.C.B. 8.9.Disassembly of Rear Panel. Re

37、fer to “Disassembly of Top Cabinet”. Step 1 Remove 8 screws. 8 26 Step 2 Lift up to detach Inner Chassis Unit.Step 3 Release tabs. Step 4 Remove Rear Panel. Step 2 Step 3 27 8.10.Disassembly of Main P.C.B. Refer to “Disassembly of Top Cabinet”. Refer to “Disassembly of Rear Panel”. Step 1 Detach 5P

38、Wire at connector (CN2002) on Main P.C.B. Step 2 Detach 17P FFC at connector (CN2000) on Main P.C.B. Step 3 Detach 13P Wire at connector (CON2) on SMPS Mod- ule. Step 4 Detach 10P FFC at connector (CN8251) on Main P.C.B. Step 5 Detach 24P FFC at connector (FP8201) on Main P.C.B. Step 6 Remove 2 scre

39、ws. Step 7 Remove Main P.C.B. 28 8.11.Disassembly of CD Mecha- nism Unit Refer to “Disassembly of Top Cabinet”. Refer to “Disassembly of Front Panel Unit”. Step 1 Remove 7 screws. Step 2 Detach 10P FFC at connector (CN8251) on Main P.C.B. Step 3 Detach 24P FFC at connector (FP8201) on Main P.C.B. St

40、ep 4 Remove screw. Step 5 Remove screw. 7 Step 2 Step 3 Step 4 Step 5 29 Step 6 Release catches. Step 7 Lift up to remove Inner Chassis Unit. Step 8 Remove 2 screws. Step 9 Remove CD Mechanism Unit. 8.12.Disassembly of CD Interface P.C.B. Refer to “Disassembly of Top Cabinet”. Refer to “Disassembly

41、of Front Panel Unit”. Refer to “Disassembly of CD Mechanism Unit”. Step 1 Remove 2 screws. Step 2 Desolder pins of the motor (M7301). Step 3 Desolder pins of the motor (M7302). Step 4 Remove CD Interface P.C.B. Step 6 Step 7 Step 8 :XTN2+6GFJf 30 9Service Position Note: For description of the disass

42、embly procedures, see the Section 8. 9.1.Checking of Panel P.C.B. and LCD P.C.B. Step 1 Remove Top Cabinet. Step 2 Remove Front Panel Unit. Step 3 Remove Panel P.C.B. and LCD P.C.B. Step 4 Place Panel P.C.B. and LCD P.C.B. on the insulated material. Step 5 Attach 17P FFC at connector (CN2000) on Mai

43、n P.C.B. to Panel P.C.B. Step 6 Panel P.C.B. and LCD P.C.B. can be checked at dia- gram shown. 9.2.Checking of Main P.C.B. and SMPS Module Step 1 Remove Top Cabinet. Step 2 Remove Front Panel Unit. Step 3 Remove Rear Panel. Step 4 Remove Main P.C.B. Step 5 Remove SMPS Module Step 6 Place Main P.C.B.

44、, SMPS Module on the insulated material. Step 7 Attach 13P Wire at connector (CON2) on SMPS Module. Step 8 Attach 10P FFC at connector (CN8251) on Main P.C.B. Step 9 Attach 24P FFC at connector (FP8201) on Main P.C.B. Step 10 Attach 17P FFC at connector (CN2000) on Main P.C.B. Step 11 Main P.C.B. an

45、d SMPS Module can be checked at dia- gram shown. 31 10 Block Diagram 10.1.Servo and System Control SA-AKX80LM SERVO & SYSTEM CONTROL (1/2) BLOCK DIAGRAM TO SERVO & SYSTEM CONTROL BLOCK (2/2) + + 52TRVP2 USBPP132 USBNOC133 BOOT FILE DET31 BOOT FILE ANALYSIS32 EMMC/USB2 DET33 +3.3V Q2001 D2002 RESET 2

46、6 EMO1 EMO1 27 EMO2 EMO2 9 TU SCL 8 TU SDA TU SCL 47 DAP PDN DAP PDN 46 DAP RESET DAP RESET 48 DAP MUTE DAP MUTE 36 DAP SCL DAP SCL 10 TU RST TU RST 25 TU INT TU INT 93 AUTOBASS AUTOBASS 41 DAMP OTW DAMP OTW 42 DAMP CLIP DAMP CLIP 43 DAMP FAULT DAMP FAULT 49 BKND ERR BKND ERR 50 44 DAP VALID DAP VAL

47、ID DAMP RESET DAMP RESET TU SDA 34 DAP SDA DAP SDA +5V D- D+ D- D+ 22 ZJ9300*CN2002 33 ZJ9300*CN2002 2D- 3D+ 1VBUS USB P.C.B. USB PORT JK9300 XI XO 23 POWER POWER 22 PROT PROT 51 ECO CTR ECO CTR 70 AM-BP AM BP 90 PCONT PCONT 88 SYNC SYNC 95 SMPS-ID SMPS ID 97 TEMP DET TEMP DET 53 DC DET PWR DC DET P

48、WR 6SCL 5SDA MICROPROCESSOR RFKWMAKX80LM IC2006 EEPROM C3EBEY000037 IC2007 EE CLK29 EE DATA28 EMO1 EMO2 TU CLK TU SDA DAP PDN DAP RESET DAP MUTE POWER PROTECT ECO CTNRL SMPS BP PCONT DAP CLK/DSP CLK TU RST TU INT AUTO BASS /DAMP OTW /DAMP CLIP /DAMP FAULT BKND ERR SYNC SMPS ID TEMP DET DC DET2 DAP V

49、ALID DAMP RESET DAP SDA/DSP SDA SERVO PROCESSOR MN6627992AB IC8001 X2001 15 16 X2002 XTIN13 21TUOTX X8101 091IX 981OX LOAD CCW59 LOAD CW60 CD OPEN SW57 CD CLOSE SW56 CD REST SW58 MAIN P.C.B. NRST 19 NOTE: “ * ” REF IS FOR INDICATION ONLY CD I2S MCLK DAP I2S OUT DAP I2S LRCKO DAP I2S BCKO DAP I2S BCKO DAP I2S LRCKO DAP I2S OUT CD I2S MCLK CD I2S SDO CD I2S BCLK CD I2S LRCK FROM/TO AUDIO FROM/TO POWER SUPPLY FROM/TO AUDIO SRDATAIN114 AUDIOCLK118 CD I2S SDOSRDAT11