Panasonic-SAAKX80P-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. PSG1502009CE CD Stereo System Model No.SA-AKX80PN SA-AKX80PS Product Color: (K).Black Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelines- 3 1.2. Before Repair a

2、nd Adjustment- 3 1.3. Protection Circuitry- 4 1.4. Power Supply using SMPS Module- 4 1.5. Safety Parts Information- 5 2 Warning- 6 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices- 6 2.2. Precaution of Laser Diode- 6 2.3. General description about Lead Fre

3、e Solder (PbF)- 7 2.4. Handling Precautions for Traverse Unit- 7 2.5. Grounding for electrostatic breakdown prevention - 8 3 Service Navigation -9 3.1. Service Information-9 4 Specifications- 10 5 Location of Controls and Components- 11 5.1. Remote Control Key Button Operation - 11 5.2. Main Unit Ke

4、y Button Operation- 12 6 Service Mode- 13 6.1. Cold Start- 13 6.2. Doctor Mode Table- 13 6.3. Self-Diagnostic Mode - 15 6.4. Self-Diagnostic Error Code Table- 15 6.5. Sales Demonstration Lock Function - 16 7 Troubleshooting Guide - 17 7.1. No Power or No Display- 17 7.2. No Key Function- 17 Please r

5、efer to the original service manual for: ? ? CD Mechanism Unit (BRS12C) , Order No. PSG1303059AE ? ? Speaker system SB-AKX16PN-K, Order No. PSG1301013CE RadioFans.CN 收音机爱 好者资料库 2 7.3. No Remote Control Function-17 7.4. USB Device Cannot Detect-17 7.5. No Output Sound-18 7.6. Check Point-19 8 Disasse

6、mbly and Assembly Instructions-20 8.1. Type of Screws -20 8.2. Disassembly Flow Chart-21 8.3. Main Components and P.C.B. Locations-22 8.4. Disassembly of Top Cabinet-23 8.5. Disassembly of Front Panel Unit-24 8.6. Disassembly of Panel P.C.B. and LCD P.C.B.-25 8.7. Disassembly of Remote Sensor P.C.B.

7、-26 8.8. Disassembly of USB P.C.B. -27 8.9. Disassembly of Rear Panel.-27 8.10. Disassembly of Main P.C.B.-29 8.11. Disassembly of SMPS Module and Voltage Selector P.C.B.-29 8.12. Disassembly of CD Mechanism Unit-30 8.13. Disassembly of CD Interface P.C.B.-31 9 Service Position-32 9.1. Checking of P

8、anel P.C.B. and LCD P.C.B.-32 9.2. Checking of Main P.C.B. and SMPS Module-32 10 Block Diagram -33 10.1. Servo and System Control-33 10.2. Audio -35 10.3. Power Supply -36 11 Wiring Connection Diagram-37 12 Schematic Diagram-39 12.1. Schematic Diagram Notes-39 12.2. Main (CD Servo) Circuit (1/3) -41

9、 12.3. Main (CD Servo) Circuit (2/3) -42 12.4. Main (CD Servo) Circuit (3/3) -43 12.5. Main (Micon) Circuit (1/4) -44 12.6. Main (Micon) Circuit (2/4) -45 12.7. Main (Micon) Circuit (3/4) -46 12.8. Main (Micon) Circuit (4/4) -47 12.9. Main (Damp) Circuit -48 12.10. Panel, LCD, USB, Remote Sensor and

10、 CD Interface Circuit-49 13 Printed Circuit Board -50 13.1. Main P.C.B. (Side A)-50 13.2. Main P.C.B. (Side B)-51 13.3. Panel, LCD, USB and Remote Sensor P.C.B.-52 13.4. CD Interface P.C.B.-53 14 Voltage and Waveform Measurement -55 14.1. Voltage Measurement-55 15 Exploded View and Replacement Parts

11、 List-59 15.1. Cabinet Parts Location 1-59 15.2. Cabinet Parts Location 2-60 15.3. Packaging (SC-AKX80) -61 15.4. Mechanical Replacement Part List -63 15.5. Electrical Replacement Parts List-65 RadioFans.CN 收音机爱 好者资料库 3 1Safety Precautions 1.1.General Guidelines 1. IMPORTANT SAFETY NOTICE There are

12、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. It is essential that these critical parts should be replaced with manufacturers specified parts to prevent X

13、-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 Adaptor whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as th

14、is 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 servicing. 3. When servicing, observe the original lead dress. If a short circuit is found, replace all parts

15、 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 installed. 5. After servicing, make the following leakage current checks to prevent the customer from being e

16、xposed 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, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connect

17、ors, 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 the chassis, the reading must be 1.1.2.Leakage Current Hot Check 1. Plug the AC cord directly into the AC outlet

18、. 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 earth ground such as a water pipe, as shown in Figure 1-1. 3. Use an AC voltmeter, with 1000 ohms/volt or more sen

19、sitivity, 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 tes

20、ter (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 possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the

21、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 are completed, restore power gradually using a variac to avoid overcurrent. Current consumption at AC 120 V, 6

22、0 Hz during Power ON in FM Tuner at volume minimal should be 250 mA (PN). Current consumption at AC 220240 V, 50/60 Hz during Power ON in FM Tuner at volume minimal should be 250 mA (PS). 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 f

23、ollowing 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 l

24、ess 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, the uni

25、t 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) N0AB3GK00008 (For PN) 2) N0AD3GK00001

26、(For PS) Disconnect AC power to discharge the AC Capacitors (C1 (For PS), C2) through a 10 , 10 W resistor to ground. 1.4.1.How to Identify SMPS Figure 1-2 1.4.2.For PN Figure 1-3 5 1.4.3.For PS Figure 1-4 1.5.Safety Parts Information Safety Parts List: There are special components used in this equi

27、pment which are important for safety. These parts are marked by in the Schematic Diagrams, Exploded View OPEN/CLOSE and CD key 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 functio

28、n mode is entered. Cancellation of Sales Demonstration Lock Mode To cancel the sales demonstration lock mode. 1. Turn on the unit. 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

29、for 2 sec. FL Display Key Operation Front Key Item DescriptionMode Name 17 7Troubleshooting Guide 7.1.No Power or No Display 7.2.No Key Function 7.3.No Remote Control Function 7.4.USB Device Cannot Detect Press the Power Button of Unit or Remote Control to Turn ON the Unit No Display on FL Panel Cau

30、tion: 1. AC Cord Plug-out 2. Check Fuse(F1) = 0 ohm refer to check point - Check connection, replace new fuse Check Primary E-Cap (C2) Measured 300V or more refer to check point - 11 22 Change SMPS Module Check Secondary Cap. (C12) Measured 32.5V refer to check point - 33 Change SMPS Module Check DC

31、-DC Regulator IC(IC1003) Measured 6V at D1001 refer to check point 6 Change IC1002 Check Regulator IC (IC1000) Measured 3.3V at metal pad refer to check point 7 Change IC1003 Check Connector (CN2000) Measured 5/3.3/3.3V at Pin 1,2 and 4 refer to check point 8 Check connection at Main PCB Check DC-DC

32、 Regulator IC (IC1002) Measured 12V at R1043 refer to check point 5 Change IC1000 If No Display on FL Panel Check LCD P.C.B and LCD Driver IC (IC900) OK NG OK OKOKOK NG OK NG OK NG NG NG NG NG Check Sys3.3V E Cap (C11) Measured 3.3V refer to check point - 44 NG OK Change SMPS Module Press Power Butt

33、on or CD Door Open of Unit to Turn ON the Unit If Cannot Power ON (No Display) Check Main PCB OK NG Use Remote Control to Turn ON the Set FL Display Show HELLO OK Press the Power Buttons or Other Buttons Check and Ensure that Panel Connector is Properly Insert NG OK All Buttons are Working If Button

34、s are not Working Change Panel PCB NG OK No Problem Found Press the Remote Control Power Button to Power ON the Unit (Ensure have Battery & New) If Cannot Power ON (No Display) OK NG Press the Power Button of the Unit to Turn ON the Set FL Display Show HELLO OK Press Remote Control Buttons Check Rem

35、ote Sensor PCB, Panel P.C.B and IR sensor (IR9000) NG OK All Remote Control Buttons are Working Change SMPS Module NG OK No Problem Found Check Sys3.3V E Cap (C11) Measured 3.3V refer to check point - 44 9 Press the Power Button of Unit or Remote Control to Turn ON the Unit Check Main PCB and USB P.

36、C.B NG Plug-in USB Device to USB port FL Display USB NG Check Main PCB and connection NG Press Play FL Display Music Name or Title No Problem Found OKOKOK Press USB on the Set or Remote Control to Select USB, Display USB and NO DEVICE Check CN2002 pin #1 Measured 5V refer to check point 18 7.5.No Ou

37、tput Sound CD Play a) Check +12V, +32V supply to IC6000 b) Check Pin 5,6,14,15 for PWM input signal at IC6000 c) Check Pin 35, 39, 27, 32 for PWM output signal at IC6000 d) Check input signal and output to DAP IC (IC6500) USB Play Tuner Mode Press Power Button of Unit or Remote Control to Turn ON th

38、e Unit Check Main PCB NG Press Play FL Display Track & Count NG Output Sound No Problem Found OK CD Mode OKOK Change CD Mechanism and Traverse Unit Press Power Button of Unit or Remote Control to Turn ON the Unit Check Main PCB and USB P.C.B NG Insert USB Thumdrive FL Display USB Press Play NG Outpu

39、t Sound No Problem Found OK USB Mode OKOK Change USB Device Press Power Button of Unit or Remote Control to Turn ON the Unit Change Tuner IC (IC52) on Main PCB NG Search for Tuner Signal NG Output Sound No Problem Found OK FM/AM Mode OKOK Check FM Antenna Wire Connection 19 7.6.Check Point Power PCB

40、 Main PCB Fuse (F1) (0 ohm) 11 2 2 Pri. Cap (C2) (300V or more) 5 R1043 (12V) Sec. Cap (C12) (32.5V) 3 3 Sys3.3V E Cap (C11) (3.3V) 44 D1001 (6V) 6 Metal Pad (3.3V) 7 CN2000 Pin 1,2,4 5V/3.3V/3.3V 8 CN2002 Pin 1 5V 9 20 8Disassembly and Assembly Instructions Caution Note: This section describes the

41、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 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 to its high temperature after prolong use. (See caution as described below) During disassembl