Panasonic-SAAKX880P-cs-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2016. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1603002CE CD Stereo System Model No.SA-AKX660PN SA-AKX660PS SA-AKX880PN SA-AKX880PS Product Color: (K).Black Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelin

2、es- 3 1.2. Before Repair and Adjustment- 4 1.3. Protection Circuitry- 4 1.4. 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 Free Solder (PbF

3、)- 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- 12 5.1. Remote Control Key Button Operation - 12 5.2. Main Unit Key Button Op

4、eration- 13 6 Service Mode- 14 6.1. Cold-Start - 14 6.2. Sales Demonstration Lock Function - 14 6.3. Doctor Mode Table- 15 6.4. Self-Diagnostic Mode - 17 6.5. Self-Diagnostic Error Code Table- 17 7 Troubleshooting Guide - 19 7.1. No Power or No Display - 19 7.2. Bluetooth Pairing Failure- 19 7.3. No

5、 Key Function- 19 7.4. No Remote Control Function- 19 7.5. USB Device Cannot Detect- 20 7.6. No Output Sound- 21 7.7. Check Point- 22 Please refer to the original service manual for: ? ? CD Mechanism Unit, (BRS12C) Order No. PSG1303059AE ? ? Speaker system SB-AKX880PNK Order No. PSG1603003CE RadioFa

6、ns.CN 收音机爱 好者资料库 2 8 Disassembly and Assembly Instructions-23 8.1. Types of Screws -23 8.2. Disassembly Flow Chart-24 8.3. Main Components and P.C.B. Locations-24 8.4. Disassembly of Top Cabinet-25 8.5. Disassembly of Front Panel Unit-25 8.6. Disassembly of Panel P.C.B.-26 8.7. Disassembly of USB P.

7、C.B. -26 8.8. Disassembly of Music Port P.C.B. -27 8.9. Disassembly of Rear Panel-27 8.10. Disassembly of Main P.C.B.-28 8.11. Disassembly of CD Mechanism Unit-28 8.12. Disassembly of CD Interface P.C.B.-30 8.13. Disassembly of Tuner P.C.B.-30 8.14. Disassembly of SMPS P.C.B.-30 9 Service Position-3

8、1 9.1. Checking of Panel P.C.B. -31 9.2. Checking of Main P.C.B. and SMPS P.C.B. -31 10 Block Diagram -32 10.1. System Control -32 10.2. Audio -35 10.3. Power Supply -37 11 Wiring Connection Diagram-40 12 Schematic Diagram-42 12.1. Schematic Diagram Notes-42 12.2. Main (CD Motor Driver) Circuit-44 1

9、2.3. Main (USB EMMC) Circuit-45 12.4. Main (SOC IO Expander) Circuit (1/2)-46 12.5. Main (SOC IO Expander) Circuit (2/2)-47 12.6. Main (Damp) Circuit (1/2) -48 12.7. Main (Damp) Circuit (2/2) -49 12.8. Main (Connector) Circuit -50 12.9. Main (DSP) Circuit-51 12.10. Main (VREG Fan) Circuit (1/2)-52 1

10、2.11. Main (VREG Fan) Circuit (2/2)-53 12.12. Main (Tuner) Circuit -54 12.13. SMPS Circuit (1/2)-55 12.14. SMPS Circuit (2/2)-56 12.15. CD Interface, USB and Music Port Circuit-57 12.16. Panel Circuit-58 13 Printed Circuit Board -59 13.1. Main P.C.B. (Side A)-59 13.2. Main P.C.B. (Side B)-60 13.3. S

11、MPS P.C.B. -61 13.4. Panel, USB, CD Interface and Music Port P.C.B.-62 13.5. Tuner P.C.B.-63 14 Voltage and Waveform Measurement -64 14.1. Voltage Measurement-64 14.2. Waveform Chart -68 15 Exploded View and Replacement Parts List-70 15.1. Cabinet Parts Location 1-70 15.2. Cabinet Parts Location 2-7

12、1 15.3. Packaging (For SC-AKX660PN/PS) -72 15.4. Packaging (For SC-AKX880PN/PS) -73 15.5. Mechanical Replacement Part List -74 15.6. Electrical Replacement Parts List-76 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

13、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-RADIATION, shock, fire,

14、 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 this protects the technici

15、an 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 which have been overhea

16、ted 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 exposed to shock hazards.

17、 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, connectors, control shafts, etc

18、. 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. Do not use an isolatio

19、n 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 sensitivity, to measure the

20、 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 o

21、r 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 customer. Figure 1-1 Rad

22、ioFans.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 P.C.B.) as indicate below 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 sol

23、id state devices. After repairs are completed, restore power gradually using a variac to avoid overcurrent. Current consumption at AC 120 V, 60 Hz in Power ON, FM Tuner at volume minimal mode should be 750 mA (PN). Current consumption at AC 220240 V, 50/60 Hz in Power ON, FM Tuner at volume minimal

24、mode should be 750 mA (PS). 1.3.Protection Circuitry The protection circuitry may have operated if either 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 ex

25、ample, the positive and negative speaker connection wires are “shorted”, or if speaker systems with an impedance 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 co

26、rrect it. 3. Turn on the power once again after one minute. Note: When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again. 5 1.4.Safety Parts Information Safety Parts List: There are special components used in this equipment which are

27、 important for safety. These parts are marked by in the Schematic Diagrams, Exploded View OPEN/CLOSE and CD/RADIO/AUX keys 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 mo

28、de is entered. Cancellation of Sales Demonstration Lock Mode To cancel sales demonstration lock mode. 1. Turn on the unit. 2. Select to CD mode function. 3. Set volume to Vol 19. 4. Press and hold ;OPEN/CLOSE and CD/RADIO/AUX 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 14 6.3.Doctor Mode Table 6.3.1.Doctor Mode Table 1 FL Display Key Operation Front Key Item DescriptionMode Name Doctor Mode EEPROM checksum check (For AKX660) (Decimal)1234 To enter into Doctor ModeIn CD Mode: 1. Press button o

30、n main unit follow by 4 and 7 on remote control. In CD mode: 1. Enter into Doctor Mode 2. To exit, press SLEEP button on remote control or, press POWER, /I button on Main Unit Displaying of 1. Year Develop. 2. Model Type. 3. ROM Type. 4. Firmware Version. (For AKX880) Cold StartTo active cold start

31、upon next AC power up when reset start is execute the next time. In Doctor Mode: 1. Press 4 button on the remote control. Version No. (001 999) specific for each firmware (Decimal)1234 15 6.3.2.Doctor Mode Table 2 FL Display Key Operation Front Key Item DescriptionMode Name Volume Setting Check FL D

32、isplay Check To check volume setting of the main unit. To check FL segment display. All segments will light up while all LED blink at 0.5s intervals. In Doctor Mode: 1. Press 7, 8, 9 button on the remote control. In Doctor mode: 1. Press 1 button on the remote control. 2. To cancel this mode, press

33、0 button on the remote control. Press 7: VOL50 Press 8: VOL35 Press 9: VOL0 Volume In this mode, the tray will open & close automatically. Cancellation Display Loading TestTo determine open & close operation of the CD Mechanism Unit. The counter will increment by one. When reach 99999999 will change

34、 to 00000000 Cancellation Display Traverse TestTo determine traverse unit operation for inner & outer access track. The counter will increment by one. When reach 99999999 will change to 00000000 The counter will increment by one. When reach 99999999 will change to 00000000 Cancellation Display Relia

35、bility Test (Combination) In this mode, ensure the CD is in the main unit. To determine traverse unit operation & open/close operation of the mechanism. In this mode, ensure the CD is in the main unit. In Doctor Mode: 1. Press 10 2 1 button on the remote control. In Doctor Mode: 2. To cancel this mo

36、de, press 0 button on the remote control. 2. To cancel this mode, press 0 button on the remote control. 2. To cancel this mode, press 0 button on the remote control. 1. Press 10 1 2 button on the remote control. In Doctor Mode: 1. Press 10 1 5 button on the remote control. 16 6.4.Self-Diagnostic Mod

37、e 6.5.Self-Diagnostic Error Code Table Self-Diagnostic Function provides information on any problems occurring for the unit and its respective components by displaying the error codes. These error code such as U*, H* and F* are stored in memory and held unless it is cleared. The error code is automa

38、tically display after entering into self-diagnostic mode. 6.5.1.Power Supply Error Code Table FL Display Key Operation Front Key Item DescriptionMode Name Self Diagnostic Mode edomDC t c e l eS:1petSgn i kcehcc i t songa i df l esot n i retneoT (Ensure no disc is inserted). To exit, press I on main

39、unit or remote control. Step 2: Press & hold button follow by / / on main unit for 2 seconds. Error Code Information System will perform a check on any unusual/error code from the memory ,edomc i t songa i df l esnI:1petS:e l pmaxE Press on main unit. Delete error code To clear the stored in memory

40、(EEPROM IC) Step 1: In self diagnostic mode, Press OK on remote control for 5 seconds. To exit, press I on main unit or remote control. / Solution (PCB exchange repair) FL Display Key Operation Front Key Item DescriptionMode Name Error Code F61 Diagnosis Contents: Power Amp IC output abnormal. Upon power on, PCONT=HIGH, DC_DET_AMP after checking LSI. Error Code F76 Diagnosis Contents: Power Amp IC output abnormal. DC_DET_PWR. Error Code F61-76 Diagnosis Contents: P