Panasonic-SAVK31EE-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 kHz (Low channel) 75 W per channel (6 ) 10 kHz (High channel) 75 W per channel (6 ) Total Bi-Amp power150 W per channel Phone jack TerminalStereo, 3.5 mm jack Aux Input sensitivity250 mV Input Impedance13.3 k Mic jack Sensitivity0.7

2、 mV, 680 TerminalMono, 3.5 mm jack (2 system) n FM TUNER SECTION Frequency range87.50 - 108.00 MHz (50 kHz steps) Sensitivity1.8 V (IHF) S/N 26 dB1.5 V Antenna terminal(s)75 (unbalanced) n AM TUNER SECTION Frequency range522 - 1629 kHz (9 kHz steps) 2004 Panasonic AVC Networks Singapore Pte. Ltd. (R

3、CB registration number: 197701580H) All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-VK31EE Colour (S). Silver Type 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

4、 gap ferrite head MotorDC servo motor Recording systemAC bias 100 kHz Erasing systemAC erase 100 kHz Tape speed4.8 cm/s Overall frequency response (+3 dB, -6 dB at DECK OUT) NORMAL (TYPE I)35 Hz - 14 kHz S/N50 dB (A-weighted) Wow and flutter0.18 % (WRMS) Fast forward and rewind time Approx. 120 seco

5、nds with C-60 cassette tape n CD SECTION CD Stereo System Specifications ORDER NO. MD0405248C3 RadioFans.CN 收音机爱 好者资料库 Discs played 8 cm or 12 cm (1) CD-Audio (CD-DA) (2) Video CD (3) CD-R/RW (CD-DA, Video CD, MP3 formatted disc) (4) MP3 Sampling frequency44.1 kHz Decoding16 bit linear Pickup Beam s

6、ource/wavelength Semiconductor laser/780 nm Number of channelsStereo Frequency response 20 Hz-20 kHz (+1, -2 dB) Wow and flutterBelow measurable limit Digital filter8 fs D/A converterMASH (1 bit DAC) Video Video signal system PAL625/50, PAL525/60, NTSC Output level Composite video, 1 Vp-p, 75 Termin

7、alPin jack (1 system) 1 Before Repair and Adjustment 4 2 Protection Circuitry 4 3 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 5 4 Handling the Lead Solder 5 4.1. About lead free solder (PbF) 5 5 Handling Precautions For Traverse Deck 6 6 Precaution of Las

8、er Diode 7 7 Accessories 8 8 Operation Procedures 9 9 Operation Checks and Main Component Replacement Procedures 10 9.1. Disassembly of Top Cabinet and Rear Panel 11 9.2. Disassembly of CD Mechanism Unit 13 9.3. Disassembly Main P.C.B., Transformer P.C.B. Typically the melting point is 50 - 70F (30

9、- 40C) higher. Please use a high temperature soldering iron. In case of the 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 sold

10、er on the pins or solder area, and be sure to heat the soldering points with the Pb free solder until it melts enough. 5 SA-VK31EE 5 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

11、 clothes or human body. So, 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

12、land between the No.4(LD) and 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 f

13、lexible board (FFC). 4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted. 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

14、 conductive material (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 pick

15、up). Caution when Replacing the Traverse Deck : The traverse deck has a short point shorted with solder to protect the laer diode against electroststics breakdown. Be sure to remove the solder from the short point before making connections. 6 SA-VK31EE 6 Precaution of Laser Diode Caution : This prod

16、uct utilizes 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

17、 pick up 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. Do not look at pick up lens. CAUTION! THIS PRODUCT UTILIZES A LASER. USE OF CONTRO

18、LS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. n Use of Caution Labels 7 SA-VK31EE 7 Accessories AC power supply cord FM indoor antenna AM loop antenna Video connection cable Remote control transmitter 8 SA-VK31EE 8 Operat

19、ion Procedures 9 SA-VK31EE Some chassis components may have sharp edges. Be careful when disassembling and servicing. 9 Operation Checks and Main Component Replacement Procedures “ATTENTION SERVICER” 1. This section describes procedures for checking the operation of the major printed circuit boards

20、and replacing the main components. 2. For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required. 3. Select items from the following index when checks or replacement are required. Warning: This product uses

21、a laser diode. Refer to caution statement Precaution of Laser Diode. 10 SA-VK31EE Step 1 Remove 3 screws each side and 5 screws at rear panel. Step 2 Lift up both sides of cabinet assy, push the cabinet assy toward the rear and remove the cabinet assy. Disassembly of Rear Panel Step 3 Remove 7 screw

22、s and disconnect wire at CN305 (Fan) at rear cabinet as shown. 9.1.1. Disasembly for CD Lid (The CD changer unit can be removed after the CD Lid is removed) Follow the (Step 1) - (Step 2) of Item 9.1 - Disassembly of Top Cabinet and Rear Panel When opening the disc tray automatically (Using Power Su

23、pply) Step 1 Connect the AC power cord. Step 2 Press the POWER button to power up the main unit. Step 3 Press the OPEN/CLOSE button, the disc tray will be open automatically. 9.1. Disassembly of Top Cabinet and Rear Panel 11 SA-VK31EE Step 4 Release the 2 claws, and then remove the CD Lid. Step 5 Pr

24、ess the POWER button to turn the power on. Step 6 Press the OPEN/CLOSE button, the disc tray will be close. Open the disc tray 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

25、. Step 2 Release the 2 claws, and then remove the CD lid cover. 12 SA-VK31EE Step 1 Detach the FFC boards (CN309 QZZCWAT 14.1.1. Head Azimuth Adjustment (Deck 1/2) Caution: Please replace both azimuth adjustment screw and springs simultaneously when readjusting the head azimuth. (shown in Fig. 2) Ev

26、en if you wish to readjust the head azimuth without replacing the acrews and springs, a fine adjustment to the azimuth screw and spring. Please remove the screw-locking bond left on the head base when replacing the azimuth screw. If you wish to readjust the head azimuth, be sure to adjust with adher

27、ing the cassette tape closely to the mechanism by pushing the center of cassette tape with your finger. (shown in Fig. 3) 1. Playback the azimuth adjustment portion (8 kHz, -20dB) of the test tape (QZZCFM) in the forward play mode. Vary the azimuth adjustment screw until the output of the R-CH (PB O

28、UT-R) are maximized. 2. Perform the same adjustment in the reverse play mode. 3. After the adjustment, applyscrewlock to the azimuth adjusting screw. 14.1.2. 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 (F

29、WD side) the middle portion of it. 3. Adjust Motor VR (DECK 2) for the output value shown 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 14.1.3. B

30、ias and Erase Voltage Check 1. Set the unit “AUX” position. 2. Insert the Normal blank tape (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 standard value. Bias voltage for Deck 2144mV (Normal) Erase voltage for Deck 280m

31、V (Normal) Fig. 2 Fig. 3 14 Measurements and Adjustments 40 SA-VK31EE 14.1.4. 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/STOP” key). 3. Adjust L1002 so that the output frequen

32、cy is within the standard value. Standard Value: 97 8 kHz 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 maximized in Fig. 6. Fig. 5 Fig. 6 14.2.2. AM RF Adjustment 1. Connect the

33、 instrument as shown in Fig. 7. 2. Set the 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. 9. Set AM-SG to 520kHz.

34、10. Receive 520kHz in the unit. 11. Adjust Z101 (OSC) so that the EVM-DC value is with 1.10.5V. Fig. 4 Fig. 7 14.2. Tuner Section 14.2.1. AM-IF Alignment 41 SA-VK31EE 14.3.1. Cassette Deck Section 14.3.2. Tuner Adjustment Point 14.3. Alignment Points 42 SA-VK31EE 15 Block Diagram B E EE E E FE F E D

35、E C E AE B E DE C FOCUS COIL TRACKING COIL T- OPTICAL PICKUP PHOTO DETECTOR SEMICONDUCTOR LASER F- F+ T+ IN425FOD IN326TRD IN16TVD IN23ECS PC24PC /RST1 ECM D4+18 D4-17 D3+16 D3-15 D1+12 D1-11 TRAVERSE MOTOR D2+14 D2-13 SPINDLE MOTOR IC7003 AN8739SBTE2 FOCUS COIL/TRACKING COIL/ TRAVERSE MOTOR/ SPINDL

36、E MOTOR DRIVE RESET SIGNAL GENERATOR FOCUS COIL DRIVE TRACKING COIL DRIVE TRAVERSE MOTOR DRIVE SPINDLE MOTOR DRIVE MUTE CH2 M M B LASER POWER DRIVE Q7601 B B IC7001 AN22004A-NF SERVO AMP ENV OFT BDO /RFDET FE TBAL FBAL LDON 8 2624 LPD LD 1 2 C LDON 16 31 E 27 F 28 ARF ENV(3TOUT) 10 OFTR BDO /RFDET F

37、EN 1413 15 22 FEOUT 23 25 FBAL TBAL 20 TEN 21 TEOUT D 29 GCTL GCTL TE ARF EQBST 18 VREF 19 A 32 B 30 EQSW 4 3 VCC 6 RFN 5 RF 9 CEA EQSW 43 SA-VK31EE 8 TIMES OVERSAMPLING DIGITAL FILTER DIGITAL DE-EMPHASIS CD-TEXT BUFFER EFM DEMODULATION/ SYNC INTERPOLATION SUBCODE DEMODULATION CIRC ERROR CORRECTION/

38、 DEINTERLEAVE DSL/PLL VCO SUBCODE BUFFER 16K SRAM INTERPOLATION/ SOFT MUTING/ DIGITAL ATTENUATION DIGITAL AUDIO INTERFACE DIGITAL AUDIO INTERFACE MICRO COMPUTER INTERFACE A/D CONVERTER SERVO CPU SERVO TIMING GENERATOR INPUT PORT VCO TIMING GENERATOR PITCH CONTROL OUTPUT PORT 1 BIT DAC PWM LOGICS PWM

39、 (L) PWM (R) D/A CONVERTER FOD28FOD TRD27TRD TVD22TVD TBAL31TBAL FBAL30FBAL /TLOCK12 /FLOCK11 VREF29 BCLK1BCLK SRDATA3SRDATA LRCK2LRCK DMUTE16 DSLF242DSLF2 KICK26 TRV21 ECM24ECM ECS25ECS PC23PC FLAG65 IPFLAG64 TX6 B OUTR75 OUTL73 LDON 40 LDON SENSE 10 /RST 18 /RST WVEL 43 OFT 36 OFT /RFDET 38 /RFDET

40、 BDO 39 BDO VDET 35 TRCRS 37 RFENV 34 ENV TE 33 TE FE 32 FE X1 IN 58 X2 OUT 59 CSEL 20 FCLK 63 SMCK 19 X7201 ARF44ARF 61BYTCK 49VCOF 54VCOF2 79MSEL 45IREF MDATA8MDATA MCLK7MCLK MLD9MLD STAT17STAT 76RSEL 78DIDATA 46DRF 48PLLF 53PCK 41PLLF2 DSLF247DSLF 62/CLDCK 56SBCK 55SUBC 68DEMPH BLKCK13BLKCK 66CLV

41、S 67CRC B DILRCK 79 DISCK 80 IOSEL 70 SQCK14SQCK SUBQ15SUBQ 80SSEL 52EFM A TO MAIN BLOCK IC7002 MN662790RSC SERVO PROCESSOR/ DIGITAL SIGNAL PROCESSOR/ DIGITAL FILTER/ D/A CONVERTER EQSW B GCTL PLLF Q7603 SWITCH B Q7602 SWITCH PLLF 44 SA-VK31EE AM IFT Z1102 B AM ANT Z1101 AM ANT COIL AM OSC COIL B B

42、B RCH A X1103 IC1101 LA1833NMNTLM FM/ AM IF AMP DET/ AM OSC MIX/ FM MPX FFFFFF VCO PILOT DET STEREO SWITCH PHASE DET PILOT CANCEL DECODER REG TUNING DRIVE COMP AM IF AGC AM RM AMP AM MIX S-CURVE FM DET FM IF ALC BUFFER AM OSC LEVEL DET REG AM/FM IF BUFFER AM DET PHASE DETECTOR CHARGE PUMP UNLOCK DET

43、ECTOR UNIVERSAL COUNTER POWER ON RESET SHIFT REGISTER LATCH SWALLOW COUNTER 1/6,1/17,4 BITS REFERENCE DIVIDER C2B I/F 1 2 (FM) Q1106 12 BITS PROGRAMMABLE DIVIDER TUNER SUPPLY SWITCH B FM ANT 8 (FM) MIXER OSCBUFFER (RF AMP) 6 5 17 CF1201CF1202 FM IF AMP Q1101,Q1102 TO CD SERVO BLOCK X1102 24232221201

44、9181716151413 123456789101112 1910712698 CE2CE DI3DI CL4CL DO5ST/DO 13 14 20 1 ST SD SD ST/DO 16 17 18 11 15 IC1102 LC72131MDTRM PLL FREQUENCY SYNTHESIZER B Z1120 45 SA-VK31EE ESS_RST 20 DSA_STRB 32 BLKCK 27 STAT 57 MLD 60 SUBQ 18 A0 1 Y3 8 Y4 10 DSA_DATA 33 DSA_ACK 34 Y5 12 MCLK 59 SQCK 19 /CDRST 5

45、6 MDATA 58 A5 13 A4 11 A1 3 A2 5 A3 9 X2801 OSC1 9 OSC2 8 RESETSW 49 IC2802 C0JBAZ001229 3V-5V LEVEL SHIFT IC VCD SIGNAL YUV07 3239 RESET# 29 RST# 13 AUX03 70 VDAC 64 DBUS015 1328 AUX3 48 X2350 XOUT 71 XIN 74 AUX1 46 AUX0 45 VSYNC 40 CPUCLK 42 HYSNC 41 PLCK2X 43 AUX4 49 PLCK 44 AUX5 53 ACLK 88 LCS1#

46、 66 AOUT 89 ATFS 91 ATCLK 90 AIN 93 ARFS 95 ARCLK 94 6(2) 7(1) TDMFS(INPUT) 98 TDMDR(INPUT) 97 TDMCLK(INPUT) 96 IC2700 C0CBCAA00003 2.8V REGULATOR 5(3) IC2360 C0ABBB000126 OP-AMP AOL(R)- 47(46) AOL(R)+ 48(45) IC2350 C1AB00001855 VCD AUDIO/ VIDEO DECODER IC2300 C1AB00001854 DSP IC MA08 412 CAS# 99 DO

47、E# 92 RAS# 2 DWE# 3 LA017 6879, 8287 LWR# 63 LD0LD7 5562 LOE# 64 LCS3# 65 DSC_D07 8,81,83, 85,93,95, 97,99 AUX13 38 XIN 22 XOUT 23 X601 JOG VOL VR600 5 VJOG_B 4 VJOG_A CE31 PLLCE DI28 PLLDA SD13 SD ST/DO100 ST/DO CL27 PLLCK BLKCK MLD 9 DSA_DATA AUX2 47 MCLK SQCK /RST MDATA BCLK SRDATA SUBQ STAT LRCK

48、 S7201 RESET SW Y0 2 Y1 4 Y2 6 12 DSA_STROBE AUX6 52 30 DSA_ACK AUX7 54 YUV07 8689, 92,94, 96,98 RSTOUT# 24 VSYNC# 84 HSYNC# 82 DCLK/EXT_CLK 12 PCK2 80 PCK 79 AUX11 35 DSC_S 10 DSC_C 6 MCLK 17 TSD 21 TBCK 22 TWS 19 RSD 33 RBCK 37 RWS 23 VDD3 1,31,51 IC2801 MN101C30AEAB MECHACON IC JK2800 VIDEO OUT C

49、2BBGF000579MICROPROCESSORIC600 L2350 SW2800 PAL/NTSC SW OFFON IC602 BR93LC46FE2 EEPROM (NOT SUPPLIED) 91 EE_CS 92 SER4 (EE_CLK) 93 SER3 (EE_DAT) 3456 43 MM_RSTMICON_RST 21 41 Q2802 RESET SWITCH IC2805 BR93LC46FE2 EEPROM (NOT SUPPLIED) EE_CS 23 EE_CLK 25 46 SA-VK31EE DQ015 25, 710, 3538, 4043 A08 1821, 2428 CASL# 32 CASH# 31 A9 29 RAS# 15 WE# 14 IC2100 C3ABMG000160 16M DRAM A017 212, 23,2530 /WE 31 /RESET 1 D07 1315, 1721 /OE 24 /CE 22 IC2120 C3FBJC000057 FLASH ROM SW1 SW2 SW3 SW4