Panasonic-SAAK220GCP-cs-sm 电路图 维修手册.pdf

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1、n AMPLIFIER SECTION RMS Power output THD 10%, both channels driven 1 kHz80 W per channel (6 ) Total Bi- Amp power160 W per channel Input sensitivity AUX250 mV Input Impedance AUX13.3 k n FM TUNER SECTION Frequency range 87.50 -108.00 MHz (50 kHz steps) Sensitivity2.5V (IHF) S/N 26 dB2.2 V Antenna te

2、rminal(s)75 (unbalanced) n AM TUNER SECTION Frequency range522 -1629 kHz (9 kHz steps) 520 -1630 kHz (10 kHz steps) Sensitivity S/N 20 dB (at 999 kHz)560 V/m n CASSETTE DECK SECTION Track system4 track, 2 channel Heads Record/playbackSolid permalloy head ErasureDouble gap ferrite head MotorDC servo

3、motor Recording systemAC bias 100 kHz 2004 Panasonic AVC Networks Singapore Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. SA-AK220GCP Colour (S). Silver Type Erasing systemAC erase 100 kHz Tape speed4.8 cm/s Overall frequency response (+3 dB, - 6 dB at D

4、ECK OUT) NORMAL (TYPE I)35 Hz -14 kHz S/N50 dB (A weighted) Wow and flutter0.18 % (WRMS) Fast forward and rewind timeApprox. 120 seconds with C- 60 cassette tape n CD SECTION Sampling frequency44.1 kHz Decoding16 bit linear Beam source/wavelengthSemiconductor laser/780 nm Number of channelsStereo Fr

5、equency response20 Hz -20 kHz (+1, - 2 dB) Wow and flutterBelow measurable limit Digital filter8 fs D/A converterMASH (1 bit DAC) MP3 Bit rate32 kbps -320 kbps Sampling frequency32 kHz, 44.1 kHz, 48 kHz n GENERAL Power SupplyAC 110/ 127/ 220- 230/ 240 V, 50/ 60 Hz Power consumption179 W Powerconsump

6、tioninstandby mode 0.85 W Dimensions (W x H x D)250 x 330 x 363 mm CD Stereo System Specifications ORDER NO. MD0403067C3 RadioFans.CN 收音机爱 好者资料库 Mass7.5 kg n SYSTEM SC- AK220 (GCP)Music center: SA- AK220 (GCP) Speaker: SB- AK220 (P) 1 Before Use 4 2 Before Repair and Adjustment 4 3 Protection Circui

7、try 4 4 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 4 5 Handling the Lead-free Solder 5 5.1. About lead free solder (PbF) 5 6 Handling Precautions For Traverse Deck 6 7 Precaution of Laser Diode 7 8 Accessories 8 9 Operation Procedures 9 10 Disassembly an

8、d Assembly of Main Component 10 10.1. Disassembly flow chart 10 10.2. Disassembly of Top Cabinet and Rear Panel 11 10.3. Disassembly of CD Mechanism Unit 13 10.4. Disassembly Main P.C.B., Transformer P.C.B., Voltage Selector P.C.B. Typically the melting point is 50 -70F (30 -40C) higher. Please use

9、a high temperature soldering iron. In case of soldering iron with temperature control, please set it to 700 20F (370 10C). Pb free solder will tend to splash when heated too high (about 1100F/600C). When soldering or unsoldering, please completely remove all of the solder on the pins or solder area,

10、 and be sure to heat the soldering points with the Pb free solder until it melts enough. 5 SA-AK220GCP 6 Handling Precautions For Traverse Deck The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of clothes or human body. So,

11、be careful of electrostatic breakdown during repair of the traverse deck (optical pickup). Handling of traverse deck (optical pickup) 1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock. 2. The short land between the No.4(LD) an

12、d No.5(GND) pins on the flexible board (FFC) is shorted with a solder build- up to prevent damage to the laser diode.To connect to the PC board, be sure to open by removing the solder build- up, and finishthe work quickly. 3. Take care not to apply excessive stress to the flexible board (FFC). 4. Do

13、 not turn the variable resistor (laser power adjustment). It has already been adjusted. Fig 6.1 Grounding for electrostatic breakdown prevention 1. Human body grounding Use the anti- static wrist strap to discharge the static electricity from your body. 2. Work table grounding Put a conductive mater

14、ial (sheet) or steel sheet on the area where the traverse deck (optical pickup) is placed, and ground the sheet. Caution : The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the traverse deck (optical pickup). Caution when

15、 Replacing the Traverse Deck : The traverse deck has a short point shorted with solder to protect the laser diode against electrostatic breakdown. Be sure to remove the solder from the short point before making connections. Fig 6.2 6 SA-AK220GCP 7 Precaution of Laser Diode Caution : This product uti

16、lizes a laser diode with the unit turned ON, invisible laser radiation is emitted from the pick up lens. Wavelength : 780 nm Maximum output radiation power from pick up : 100 W/VDE Laser radiation from pick up unit is safety level, but be sure the followings: 1. Do not disassemble the optical pick u

17、p unit, since radiation from exposed laser diode is dangerous. 2. Do not adjust the variable resistor on the pick up unit. It was already adjusted. 3. Do not look at the focus lens using optical instruments. 4. Recommend not to look at pick up lens for a long time. CAUTION! THIS PRODUCT UTILIZES A L

18、ASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. n Use of Caution Labels 7 SA-AK220GCP 8 Accessories Remote Control Transmitter FM Indoor Antenna AC Power Supply Cord AM Loop Antenna Power Plug Adaptor 8 S

19、A-AK220GCP 9 Operation Procedures 9 SA-AK220GCP 10 Disassembly and Assembly of Main Component 10.1. Disassembly flow chart The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the ste

20、ps shown in the chart as below. 10 SA-AK220GCP Step 1 Remove 3 screws each side and 5 screws at rear panel. Step 2 Lift up both sides of top cabinet, push the cabinet assy toward the rear and remove it. Disassembly of Rear Panel Step 3 Remove 6 screws. Step 4 Draw rear panel forward. 10.2.1. Disasse

21、mbly for CD Lid (The CD changer unit can be removed after the CD Lid is removed) Follow the (Step 1) -(Step 5) of Item 10.2 -Disassembly of Top Cabinet and Rear Panel When opening the disc tray automatically (Using Power Supply) Step 1 Connect the AC power cord. Step 2 Press the POWER button to powe

22、r up the main unit. Step 3 Press the OPEN/CLOSE button, the disc tray will be open automatically. Step 4 Release the 2 claws, and then remove the CD Lid. 10.2. Disassembly of Top Cabinet and Rear Panel 11 SA-AK220GCP Step 5 Press the OPEN/CLOSE button, the disc tray will be close. Open the disc tray

23、 manually (Using service tools) Step 1 Insert the gear tool into the hole on the underside of CD chassis and then rotate in the direction of arrow. The disc tray will be open. Step 2 Release the 2 claws, and then remove the CD lid cover. 12 SA-AK220GCP Step 3 Repeat Step 2 but rotate the gear tools

24、in anti- clockwise Step 1 Detach the FFC boards (CN309 QZZCWAT 15.1.1. Tape Speed Adjustment (Deck 1/2) 1. Set the tape edit button to “NORMAL” position. 2. Insert the test tape (QZZCWAT) to DECK 2 and playback (FWD side) the middle portion of it. 3. Adjust Motor VR (DECK 2) for the output value sho

25、wn below. Adjustment target: 2940 3060 Hz (NORMAL speed) 4. After alignment, assure that the output frequency of the DECK 1 FWD are within 60 Hz of the value of the output frequency of DECK 2 FWD. Fig.1 15.1.2. Bias and Erase Voltage Check 1. Set the unit “AUX” position. 2. Insert the Normal blank t

26、ape (QZZCRA) into DECK 2 and the unit to “REC” mode (use “l REC/STOP” key). 3. Measure and make sure that the output is within the 1. Connect the instrument as shown in Fig.5. 2. Set the unit to AM mode. 3. Apply signal as shown in Fig. 5 from AM- SG. 4. Adjust Z102 so that the output frequency is m

27、aximized in Fig. 6. standard value. Bias voltage for Deck 2144mV (Normal) Erase voltage for Deck 280mV (Normal) Fig.2 Fig.3 15.1.3. Bias Frequency Adjustment (Deck 1/2) 1. Set the unit to “AUX” position. 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and set the unit to “REC” mode (l use “REC/

28、STOP” key). 3. Adjust L1002 so that the output frequency is within the standard value. Standard Value: 97 8 kHz Fig.4 Fig.5 15 Measurements and Adjustments 15.2. Tuner Section 15.2.1. AM-IF Alignment 40 SA-AK220GCP Fig.6 15.2.2. AM RF Adjustment 1. Connect the instrument as shown in Fig. 7. 2. Set t

29、he unit to AM mode. 3. Set AM- SG to 520kHz. 4. Receive 520kHz in the unit. 5. Adjust Z101 (OSC) so that the EVM- AC is maximized. 6. Set AM- SG to 600Hz. 7. Receive 600Hz in the unit. 8. Adjust Z101 (ANT) so that the EVM- SG is maximized. 15.3.1. Cassette Deck Section 15.3.2. Adjustment Point 9. Se

30、t AM- SG to 520kHz. 10. Receive 520kHz in the unit. 11. Adjust Z101 (OSC) so that the EVM- DC value is with 1.10.5V. Fig.7 15.3. Alignment Points 41 SA-AK220GCP 16 Block Diagram T- T+ F+ F- PHOTODETECTOR FE /RFDET OPTICAL PICKUP BDO ENV OFTR SEMICONDUCTOR LASER Q701 LASER POWER DRIVE SPINDLE MOTOR M

31、702 _ M _ M TRAVERSE MOTOR M701 RESET SIGNAL GENERATOR FOCUS COIL DRIVE TRACKING COIL DRIVE TRAVERSE MOTOR DRIVE SPINDLE MOTOR DRIVE MUTE CH2 FOCUS COIL TRACKING COIL TRVM(PC) SPOUT TRVP FOP TRP E27 F28 B30 D29 LD2 LPD1 A32 C31 22FEN 23FEOUT 14OFTR 9CEA 5 RFOUT 6 RFIN 13 BDO 10(ENV) 3TOUT 11 DCDET 1

32、9 VREF D4+17 D4-16 D3+15 D3-14 D1+11 D1-10 D2+13 D2-12 4PC2 3IN2 6IN1 24IN3 23IN4 1 /RST IC701 AN22004A- NF SERVO AMP NC18 5NC 2NC 15/RFDET 7 CAGC 8 ARF ARF 12 OFTCONT RFEQ EQSW 4 EQBST 18 NRFDET LDON 16 LDON B B B B AMPGCABCA AMPGCABCA BandGap SUB B AMPGCABCA AMPGCABCA SUB B TE 20TEN 21TEOUT TBALTB

33、AL 26 FBALFBAL 25 GND 17 GCTL GCTL 24 IC703 AN8739SBTE2 FOCUS COIL/TRACKING COIL/ TRAVERSE MOTOR/ SPINDLE MOTOR DRIVE B B B B B BDO/OFTR 3TENV AGC RFAMP B A B F E B 42 SA-AK220GCP DSL, PLL, VCO TIMING GENERATOR MICROCOMPUTER INTERFACE ARF MP3 DECODER FS CONVERTER DIGITAL FILTER D/A CONVERTER DIGITAL

34、 OUT EFM DEMODULATION SYNC INTERPOLATION CTRCEOC CDROM EOC CTRL RAM SERIAL OUTPUT INTERFACE (DAO) BUS CONTROL UNIT ADPCM ANALOG LOW PASS FILTER OUTPUT PORT DSV OFTR BDO /RFDET LDON FBAL TBAL GCTL FE TE ENV STAT MLD MCLK MDATA CD_RST MN6627934CH SERVO PROCESSOR DIGITAL SIGNAL PROCESSOR/ DIGITAL FILTE

35、R/ D/A CONVERTER BLKCK FOP TRVP SPOUT TRVM(PC) TO MAIN BLOCK A TRP IC702 C3ABMB000027 16M DRAM IC704 RCH CD SIGNAL 4 NEW 5 NRAS 8 NCAS0 4 WE 5 RAS 23 /CAS 2,3,6,7D03 919A010 D03 2,3, 24,25 A010 812, 1519,21 1 DRVDD 64 BLKCK 55 FLAG 67 SBCK 72 DQSY 73 TXTD 74 TXTCK ARF39 RFSW43 IREF40 DSLF42 PLLF44 P

36、LLF045 AVDD246 AVSS247 NRST 69 MDATA62 MCLK61 MLD63 STAT68 NTEST 75 PMCK 71 SMCK 66 OUTX276 INX177 DVDD13 21,53, 79 DVSS13 20,52, 78 ADPVCC 41 FE 32 TE 33 RFENV 34 OFT 35 NRFDET 36 BDO 37 B PWMSEL 65 SPPOL 70 38LDON 31FBAL 30TBAL 28FOM 25TRP 26 TRM 27FOP 23TRVP 22SPOUT 24TRVM(PC) 60 TX 49AVSS1 51AVD

37、D1 50OUTR 48OUTL 57 EXT0 56 EXT2 EXT1 58 EXT1 B B B B B B B X701 SUBCODE INTERFACE DRAM INTERFACE SERVO CPU INPUT PORT SPINDLE SERVO A/D CONVERTER 43 SA-AK220GCP IC101 LA1833NMNTLM FM/AM IF AMP, DET/AM OSC, MIX/FM MPX FM ANT AM ANT A SD ST SHIFT REGISTER LATCH 1 2 SWALLOW COUNTER 1/6,1/17,4 BITS 12

38、BITS PROGRAMMABLE DIVIDER REFERENCE DIVIDER AM IFT 123 C2B I/F PLLCLK PLLDA ST/DO CE X103 DO/ST SD Z102 456 7 98101112 S- CURVE REG FM IF FM DET AM OSC LEVEL DET BUFFER 242322 ALC BUFFER 346 Z120 RF AMP 5 1 OSC MIXER 8 FM IF AMP Q101 7 CF201CF202 13161514 DECODER STEREO SWITCH AM DET AM IF TUNING DR

39、IVE AM/FM IF BUFFER COMP FFFF REG VCO AM MIX AM RM AMP AGC 21201918 PHASE DET 17 PILOT DET FF PILOT CANCEL Z101 AM ANT COIL AM OSC COIL (FM) TUNER 15V SUPPLY SWITCH Q106 POWER ON RESET UNIVERSAL COUNTER UNLOCK DETECTOR PHASE DETECTOR CHARGE PUMP RCH Q1Q2 Q3Q4 (FM) TO CD DRIVE BLOCK PLL FREQUENCY SYN

40、THESIZER LC72131MDTRM IC102 X102 16 17 18 11 15 19107698 4CL 3DI 2CE 5DO 13 12 14 20 1 B B B B B B B 44 SA-AK220GCP MOTOR DRIVE C0GAM0000005 IC1 IC305C2CBJF000017MICROPROCESSOR REG MLD MCLK CE MDATA SD CD_RST SWITCH BLKCK PLLCLK ST/DO PLLDA Q302 STAT Q303 RM1 SWITCH C0HBB0000040 FL DRIVER IC602 FL60

41、0 FL DISPLAYFROM POWER TRANSFORMER SW5 LOAD SW4 CD SW3 SW1 SW2 D1 POWER SUPPLY CONTROL Q1 Q323 Q324 CD MOTOR SUPPLY SWITCH PLUNGER MOTOR SUPPLY CONTROL SWITCH GRID11 2124,2733 GRID1 GRID11 4,5,7,8,10,11,13,14,16,17,19,20, 22,23,25,26,28,31,33,35,37,40 GRID1 SEG1 312,1520 SEG16 SEG1 3,6,9,12,15,18,21

42、,24,27, 29,30,32,34,36,38,39 SEG16 RSTB 41 71 FL_RESET CSB 42 72 FL_CS 74 FL_CLKSCK 43 SI 44 73 FL_DOUT XT 46 XTB 47 MLD 79 MDATA 80 MCLK 81 22 SD 771921 ST/DO 78 STATUS 84 CHG_CW 85 CHG_CCW 88 CHG_PLR 83 CHG_HLF 89 CHG_AD2 90 CHG_AD1 86 CHG_SW1 87 CHG_SW2 PLLCE 25 23 PLLCK 24 PLLDA MBP1 6 X303 X_IN

43、 15 X_OUT 13 MBP2 7 VR600 JOG VOL V_JOG_A 67 V_JOG_B 68 /RESTSW 82 IN15 IN26 VREF 4 VCC 7 GND 1 10OUT2 2OUT1 8VS D2 PUSH PUSH OPEN C0JBAE000192 XOR GATE IC603 4 1 S701 REST SW B B B B Q313, Q314 SWITCH B CD_RST BLKCK M 45 SA-AK220GCP AN7348S- E1 P.B EQ/REC AMP/ ALC/TPS AMP IC1001 C1AA00000612 IC1004

44、 R/P SELECT IC971 PHOTO INTERRUPTER CNB13030R2AU MICROPROCESSORIC305C2CBJF000017 Q1016 Z971 INTERFACE S951 (MODE) Q1001,Q1003 SWITCHING (BEAT PROOF/ RECH) (DECK 2) ERASE HEAD (DECK 1) P.B. HEAD LCH L1002 BIAS OSC CONTROL Q1004,Q1005, Q1007 Q1012 (Q1013) Q1020 (Q1021) NOR/CrO & HI/LO LOGIC LOGIC REC/

45、PB RIPPLE REJECTION LOGIC L/H ALC - + Q1014(Q1015) (DECK 2) R/P HEAD LCH Q611 Q320,Q321 Q615, Q619 D951 D971 Q310 Q308, Q309 CD ON/OFF SUPPLY SWITCH CURRENT CONTROL/ VOLTAGE STABILISER CD 3.3V DECK MUTING SWITCH REC:ON/OFF CONTROL/ SWITCH SWITCH PHOTO:ON/OFF PLUNGER SUPPLY SWITCH/ PLUNGER:ON/OFF SWI

46、TCH PLUNGER SUPPLY SWITCH/ PLUNGER:ON/OFF SWITCH X301 XC_IN 10 XC_OUT 11 /CD 75 D307 52 HALF_1 53 MODE_1 Q610 SWITCH PHOTO:ON/OFF 54 PHOTO_2 IC951 PHOTO INTERRUPTER CNB13030R2AU Q616 SWITCH PHOTO:ON/OFF Q612 SWITCH PHOTO:ON/OFF 55 PHOTO_1 91 DECK2 56 PLG1 Q617, Q618 57 PLG2 60 DECK1_H 10 16 14 13 11

47、 6 19 15 12 21(4) 22(3) 17(8) 1(2) 24(23) 18(7) 9 3 5 2 4 66 BP1 Q319 BP SWITCH 59 REC M1002 Q325Q322 SUPPLY CONTROL SWITCH REC: ON/OFF CONTROL 58 MTR Q318 DECK MUTING CONTROL SWITCH 65 DMT 20(5) S952 (HALF) S972 (HALF) S971 (MODE) S975 (F.REC INH) MUTING SWITCH MUTING BUFFER AMP B B B Q328 SWITCH B

48、 Q327 SWITCH Q326 SWITCH B B B B B B Q1017 MOTOR SWITCH M 46 SA-AK220GCP AUDIO SOUND PROCESSOR IC300 C1BB00000747 AUX JK300 Q614 LED DRIVE Z600 D304,D305 KEY SW Q407 (Q207) Q402 (Q202) AMP MUTING SWITCH Q403(Q203) HEADPHONE MUTING SWITCH AUDIO MUTING CONTROL SWITCH Q301 MUTE_H Q401(Q201) 3(5)1(7) Q3

49、12 Q316, Q317 D302 AGC SWITCH POWER SUPPLY SWITCH PCONT SWITCH CD SIGNAL REMOTE SENSOR SSEQ_LED 76 RMT 18 D929 DATA 21 CLOCK 22 26 ASP_DAT 27 ASP_CLK 47 DCDET IN C1(2) 5(38) IN B1(2) 4(39) A_VOLIN1(2) 9(34) REC1(2) 8(35) IN D1(2) 6(37) IC305MICROPROCESSORC2CBJF000017 IN A1(2) 3(40) 19(24) OUT1(2) B 1(2) LM_L(R) SWITCH D404 20 SYNC 46 PCONT/EFP_/CE KEY3 9294 KEY1 IC301 C0AABB000117 HEADPHONE AMP /RESET/EFP_RESET 12 B D303 D306 B B D312 39 MUTE_H 40 MUTE_A M