Panasonic-SAAK88-cs-sch 电路图维修手册.pdf

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1、http:/servis- Service Manual TOP NEXT ORDER NO. MD0007118C3 CD Stereo System lSA-AK88 Colour (S). Silver Type Area (GC). Asia, Latin America, Africa and Middle Near East TAPE SECTION AR2 MECHANISM SERIES CD SECTION RAE0152Z-3 TRAVERSE DECK SERIES Specification Amplifier Section Front speaker power o

2、utput Power output PMPO 2400 W RMS power output THD 10%, both channels driven Total 140 W per channel (6) LOW 100 W per channel (6) HIGH 40 W per channel (6) Power output inDolby Pro Logic mode PMPO Total 2800 W RMS power output THD 10% Total 360 W Front LOW 100 W per channel (6) Front HIGH 40 W per

3、 channel (6) Center 40 W (8) Surround 20 W per channel (8) Input sensitivity AUX 250 mV MIC 0.7 mV Input impedance AUX 13.9 k MIC 680 FM Tuner Section Frequency range 87.50-108.00 MHz (50 kHz step) Sensitivity 2.5V (IHF) S/N 26 dB 2.2V Antenna terminal(s) 75 unbalanced AM Tuner Section Frequency ran

4、ge 522-1629 kHz (9kHz step) 520-1630 kHz (10kHz step) Sensitivity S/N 20 dB 560V/m Cassette Deck Section Strnka . 1 z 2 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPANASONIC%20SCHMATAHI-FI%20SYSTEMSS. RadioFans.CN 收音机爱好者资料库 http:/servis- 8.2 How to enter the Self-Diagnostic

5、 Function TOP PREVIOUS NEXT 1. Turn the unit on with no cassette in the deck. (Select the tape function) 2. Press and hold the “STOP/TUNE MODE” button for at least 2 seconds. 3. While pressing the “STOP/TUNE MODE” button, press “FF/MEMORY” button for at least 2 seconds. 4. “T” will appear on the FL

6、display. (unit is in the Self-Dianostic Function) TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. RadioFans.CN 收音机爱好者资料库 http:/servis- 8.3 Cassette Mechanism Test (For error code H01, H02, H03, F01, F02) TOP PREVIOUS NEXT 1. Press “TAPE, DE

7、CK 1/2” to select Deck 2. 2. Load a cassette tape with the erasure prevention tab, remove from left side only and close the cassette holder. 3. Press “FAST FORWARD MEMORY/NEXT” (Tape will be stop after 2 seconds) 4. Load a cassette tape with the erasure prevention tab, remove from right side only an

8、d close the cassette holder. 5. Press “REVERSE FM MODE/BP/PREV” (Tape will be stop after 2 seconds) 6. Load a pre-recorded tape with both side record tabs intact and close the cassette holder. 7. Press “PLAY TUNE/TIME ADJ SELECT” (After TPS function, tape will stop automatically) 8. Press “REC/STOP”

9、 (Tape will not move) 9. Press “STOP TUNE MODE” to indicate Error code. If several problem exist, error code will change each time when “ TUNE MODE/PBC” is pressed. (e.g. H01 H03 F01 .etc.) 10. Press “TAPE, DECK 1/2” to select Deck 1. 11. Repeat step 2 to 9 to test Deck 1. (Tape Deck 1 will not chec

10、k H02 because of no recording function) TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. RadioFans.CN 收音机爱好者资料库 http:/servis- 8.4 CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15, F75) TOP PREVIOUS NEXT 1. Press “CD”. 2. Press “CD M

11、ANAGER”. 3. Press “ TUNE MODE” to indicate Error Code. If several problem exist, error code will change each time when “ STOP TUNE MODE” is pressed. (e.g. F15 F26 F16 . etc.) TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 8.5

12、To clear all Error code TOP PREVIOUS NEXT 1. Press “STOP TUNE MODE/PBC” button for 5 seconds. 2. FL indicator shows “CLEAR” for 1 second and change to “T”. TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 8.7 Power Amplifier Fai

13、lure (F61) TOP PREVIOUS NEXT 1. When power amplifier fail, F61 will indicate automatically. TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 9.1 Error detection for Cassette Mechanism block TOP PREVIOUS NEXT TOP PREVIOUS NEXT No

14、. Error ErrorDisplay Problem condition 1 MODE SWdetection error H01 Faulty operation of cassette mechanism.Faulty contact or short-circuit of mechanism mode switch (S951, S971). 2 REC INH SWdetection error H02 Recording not possible.Faulty contact or short-circuit of REC INH switch (S974, S975). 3 H

15、ALF SWdetection error H03 Playback cannot perform.Faulty contact or short-circuit of HALF siwtch (S952, S972). 4 Reel Pulsedetection error F01 The tape advances slightly and then stops.Faulty reel pulse, faulty hole detect IC (IC951, IC971). 5 TPS abnormal F02 Cassette deck will not perform TPS func

16、tion.Faulty playback EQ/recording amplifier IC (IC101). Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 9.2 Error detection for CD/Changer block TOP PREVIOUS NEXT TOP PREVIOUS NEXT No. Error ErrorDisplay Problem condition 1 REST SW detection err

17、or F15 CD does not function.This error occurs when the Optical Pick Up REST SW (S701) is not detected within the specified time (about 8 seconds) 2 CD tray opens automatically F16 CLAMP switch (S4) NG (Check & Replace) 3 Does not startup when PLAYbutton is pressed F17 BOTTOM switch (S5) NG (Check &

18、Replace) 4 Transmission error between CDservo LSI and micon F26 CD does not function.This error occurs when the POWER is ON for the CD block and an error is detected after the transmission has started. 5 Startup fails even when youinsert CD or the selected disc tray does not open F27 Tray 1 detect s

19、witch or Tray 2 detect switch NG (Check & Replace) 6 Cannot insert CD F28 Tray 1 detect switch NG (Check & Replace) 7 Cannot eject CD F29 Check if disc is stuck. Tray 2 detect switch NG (Confirm & Replace) 8 CD power error F75 CD does not function.Check if CDRST is H for SELECTOR at CD. If it is not

20、 H after 1 second, it shall be memorised as an error. (IC702) 9 The CD tray closes H15 CD disc tray detect switch NG (S3) (Check & Replace) Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 9.3 Power Supply related error detection TOP PREVIOUS NEX

21、T TOP PREVIOUS NEXT No. Error ErrorDisplay Problem condition 1 POWER AMPoutput abnormal F61 When POWER is switched on, power become off automatically.During normal operation, if DC DET become L, PCNT shall become L and the error display on the left shall be displayed. (IC501) Strnka . 1 z 1 20. 11.

22、2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 10 CD Test Mode Function TOP PREVIOUS NEXT This CD test mode is provided to check CD unit without connecting to changer loading mechanism. This mode shall operate CD PLAY with CD unit being connected only and CD Automati

23、c Alignment result is shown on FL display. 10.1 How to enter the Self-Diagnostic Function 10.2 CD Automatically Adjustment result indication TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 10.1 How to enter the Self-Diagnostic

24、Function TOP PREVIOUS NEXT 1. Turn the unit on and select the CD function. 2. Press and hold the “STOP/TUNE MODE” button for at least 2 seconds. 3. While pressing the “STOP/TUNE MODE” button, press “FF/MEMORY” button for at least 2 seconds. 4. “ ” will appear on the FL display. (unit is in the CD te

25、st mode) TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. http:/servis- 10.2 CD Automatically Adjustment result indication TOP PREVIOUS NEXT Under CD test mode, pressing the numeric key 0 on the remote controller will display the auto adjustm

26、ent result. FLOCK, TLOCK and CLVS status shall be shown as below: During the above display, executing CD PLAY will display auto adjustment result for CD PLAY mode. TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. 16.1 CD servo circuit TOP PRE

27、VIOUS NEXT TOP PREVIOUS NEXT Strnka . 1 z 1 20. 11. 2004file:/C:Documents%20and%20SettingsAdminPlochaSCHMATAVIDEAPAN. 8 19 73 1 15 44 44 75 5958 78 80 64 3 E E A B 26 24 16 23 2 a b 67 4 106 110 110 3 111 6 C CN1000 IC1000 MPEG VIDEO AUDIO DECODER IC702 DSP IC701 SERVO IC401 SYS CONT. LCDD A4BC A X7

28、01 16.9344MHz X1000 27MHz Sub-code Q data L ch R ch 17 Audio signal output Video signal output CD-DA/ VCD (AUDIO&VIDEO) Clock lineVCD(VIDEO)CD-DA/ VCD(AUDIO) IC1003 INVERTER 5 Circuit diagram DATA SIGNAL LINE WAVEFORMS Note:Use the PVCD-K06 video CD test disc (menu playback feature is available on v

29、ersion 2.0). For color bar display, play back the 1st track when the menu playback feature is used, or the 3rd track when the feature is not used. IC702IC1000 CD serial data input 67DIC1000 Video signal output (blue back screen) IC702 , Audio signal output 7375E IC1000 Audio serial data outputARF si

30、gnal T=0.354 s(F=2.822MHz)T=0.48 s(F=2MHz) PLAY X:0.5 s Y:0.023Vx10 PLAY X:0.2 s Y:0.2Vx10 T=1 s(F=1kHz) PLAY X:0.2 s Y:0.2Vx10 PLAY X:1 s Y:0.1Vx10 H signal(PLAY, X:10 s, Y:0.1Vx10) V signal(PLAY, X:5 s, Y:0.1Vx10) (color bar screen) H signal(PLAY, X:10 s, Y:0.1Vx10) V signal(PLAY, X:10 s, Y:0.1Vx1

31、0) Test disc played at 1kHz, 0dB (1st track SZZP1056C) 0.8V 3.2V 1.2V 0.6V 0.6V 2.4V 1.2V 6.2V 8 s 8 s 8 s 8 s 8 s 8 s 63.5 s 16.7 s 63.5 s 16.7 s MASTER CLOCK SYSTEM WAVEFORMAUDIO DATA CLOCK SYSTEM WAVEFORM baAVideo read clockWrite reference clockAudio bit clock 2.4V T=0.037 sT=0.354 s T=0.5 s 3.0V

32、6.2V F=27MHzF=2.822MHzF=2MHz Diagnostic Procedures by Symptom Symptom CD-DA Video-CD Likely Location Fault TOC NG Turntable fails to rotate. Turntable rotates. Audio normal Audio normal TOC OK, counter OK, but no sound TOC NG (both audio and video are NG.) Blue black display. Fails to rotate. Rotate

33、s. Audio normal, Video NG. No sound, Video NG. TOC OK, counter OK, but no sound and video NG. For TOC NG, fault in the CD servo circuit. IC701, IC702, IC703, or traverse system. Traverse system, focus servo system (IC701,IC703), supply line, clock line system control. Traverse system, tracking servo

34、 system/ CLV servo system/ traverse servo system (IC701, IC702, IC703) IC1000 IC1000 CD disc other than DV “Karaoke” soft, video CD and CD-DA. Troubleshooting Procedure1 CD-DANo sound CD-DA: Compact disc digital audio(convertional CD only with audio tracks) Troubleshooting flowchart (Check)(Check) A

35、re the following waveforms present at pins and of IC702 when the 1kHz, 0dB portion of the 1st track on test disc SZZP1056C played back? Press the SELECT( ) button to start playback. Press the SELECT( ) button to start playback. Press the STOP( )button to stop playback. Load a CD-DA disc. TOC display

36、 normal? (Are track No. and time displays normal?) Does sound dropout occur? Check pin of IC702 or pin of CN1000. Constant low(0V) level 0V The following waveform is observed either intermittently constantly during playback. 2.4V 1 s 3.2V 6 s 6 s IPFLAG 7573 Taverse deck. IC701, IC702 Refer to “Trou

37、bleshooting guide” on 18.1. CD servo circuit. Faults is in the traverse deck or main board (servo block). IC702 IC801, Q801, Q802, headphones jack, etc. NO YES NO NO YES YES Normal (go to procedure 2-1) Likely location of fault 6426 Troubleshooting Procedure2-1 Video CDNo picture or No sound Trouble

38、shooting flowchart (Check) (Check) Load a video CD disc. TOC display normaly? (Are track No. and time displays normal?) Does the menu appear on screen? Check the waveforms at pin of IC702 or pin of CN1000. Image noise or unstable picture. Is the sound unstable? Video lineAudio line Constant low(0V)

39、level 0V The following waveform is observed either intermittently constantly during playback. 3.2V 3.0V 3.2V 23 s T=0.36 s T=0.36 s 23 s Are the following waveforms present at pins , of CN1001? 2410 Traverse deck. IC701, IC702 Faults is in the traverse deck or main board (servo block). IC1000 Press

40、the SELECT( ) button to start playback. NO NO NO NO YES NO YES YES YES YES Normal Press the STOP( )button to stop playback. Press the menu(+,-) to select the menu. Press the select ( ) to start playback. 10CDDATA 24CDSCK Procedure 2-3Procedure 2-4 Not connected to TVConnected to TV Likely location o

41、f fault 64 6 Troubleshooting Procedure2-2 Video CD blue backNo blue back Troubleshooting Procedure2-3 Video portion of video CDNo picture Troubleshooting flowchartLikely location of fault Troubleshooting Procedure2-4 Audio portion of video CDNo sound Troubleshooting flowchartLikely location of fault

42、 Press the SELECT( ) button to start playback. Press the STOP( )button to stop playback. Load a video CD disc. Does blue-back screen appear? Is the following waveform present at pin of CN1000? NO NO YES NO YES YES Normal 0.5V 0.5V T=63.5 s T=16.7 s 6.2V T=0.5 s Faults is in the main board (video out

43、put block) IC1000 Likely location of fault: IC1000 Is the following waveform present at pin of IC1000? Audio signal line IC1000 IC702 2 110 CS1102 CS1101 S G D S G D S G D S G D R ch L ch PLAYBACK HEAD DECK1 1 5 3 4 2 R ch L ch R/P HEAD ERASE HEAD DECK2 1 5 3 4 2 A B C D E F Q1173 DTC144TKA146 BIAS

44、OSC CONT.(CrO2) 23145 GNDVcc IC1102 BA7755A R/P SELECT Q1101 2SJ498CDTA HEAD SELECT (REC:ON) Q1103 2SJ498CDTA HEAD SELECT (PLAY:ON) Q1104 2SJ498CDTA HEAD SELECT (PLAY:ON) Q1102 2SJ498CDTA HEAD SELECT (REC:ON) R1182 1 TP11 TP12 TP170 TP171 TP172 R1176 4.7K D1172 MA8047MTX R1174 10K C1174 50V4.7 D1171

45、 MA111TX R1173 10K 4 5 6 D1174 MA8036HTX R1172 330 R1170 1K C1173 0.01 Q1179 2SC2412KT96R SWITCHING (BEAT PROOF) C1184 1500P C1185 4700P C1183 0.47 3 2 1 L1201 C1176 0.047 C1175 35V220 R1188 1K R1189 4.7K Q1171 2SD1302STA SWITCHING (REC:ON) R1177 5.6K D1175 MA111TX C1182 50V4.7 Q1174 2SC2412KT96R BI

46、AS OSC CONT. (CrO2) R1181 3.3K R1180 2.7K R1179 2.7K C1181 0.01 C1180 0.01 C1177 1000P C1179 0.01 C1178 1000P R1178 1.2 Q1175,1176 2SC2002KTA BIAS OSC Q1175 Q1176 TP5 TP4 TP2 TP1 R1184 100K C1102 1000P R1104 15K C1194 1000P R1195 100K C1103 680P C1104 0.022 R1101 330K R1102 100K TP6 C1193 1000P R118

47、3 100K C1101 1000P R1103 15K TP3 DECK CIRCUIT SCHEMATIC DIAGRAM-5 L1202 47 H :TAPE PLAYBACK SIGNAL LINE :TAPE RECORDING SIGNAL LINE:POSITIVE VOLTAGE LINE (8.3V) (0V)(0V) 11.1V4.9V (0V) (0V) (0V) (0V) (0V) (0V) (0V) (0V) 0V (4.2V) 0V (4.4V) 0V (4.4V) 0V (4.2V) 0.6V(14.8V) (0V) (0V)0.6V (0V) (14.8V) (

48、0V) 0.7V (0V) 0.6V (0V) 0.6V (0V) (4.8V):CrO2 (0V) 0.7V (0V) (0V) (0V) 26.4V (0V) 14.8V ERASE CURRENT CHECK POINT Q1108 DTC144TKA146 P.B EQ/ REC EQ (CrO2/ H.SPEED) Q1107 DTC144TKA146 P.B EQ/ REC EQ (CrO2/ H.SPEED) 363534333231302928272625242322212019 1234567891011121314151618 Vcc TPS SW 17 ALC GND B C A REC PRE REC R/ P PRE PB PB B A C A B C AGC OFF CA E DB A B C D C D B A E F SCHEMATIC DIAGRAM-6 C1106 1200P C1112 820P R1108 39 C1114 6.3V220 C1116 0.033 R1142 6.8K R1110 4.3K R1112 2.2K C1118 50V1 C1148 1500P C11