Panasonic SA-AK88 Service Manual
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Panasonic SA-AK88 Service Manual

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Service Manual
TOP NEXT
ORDER NO. MD0007118C3
CD Stereo System
SA-AK88
l
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
file://C:\Documents%20and%20Settings\Admin\Plocha\SCHÉMATA\VIDEA\PANASONIC%20SCHÉMATA\HI-FI%20SYSTEMS\S...
Specification
Amplifier Section
Front speaker power output
Power output
PMPO
RMS power output
THD 10%, both channels
driven
Total
LOW
HIGH
Power output inDolby Pro Logic mode
PMPO Total
RMS power output
THD 10%
Total
Front LOW
Front HIGH
Center
Surround
Input sensitivity
AUX
MIC
Input impedance
AUX
MIC
FM Tuner Section
Frequency range
Sensitivity
S/N 26 dB
Antenna terminal(s)
AM Tuner Section
Frequency range
Sensitivity
S/N 20 dB
Cassette Deck Section
http://servis-manual.com/
2400 W
140 W per channel (6Ω)
100 W per channel (6Ω)
40 W per channel (6Ω)
2800 W
360 W
100 W per channel (6Ω)
40 W per channel (6Ω)
40 W (8Ω)
20 W per channel (8Ω)
250 mV
0.7 mV
13.9 kΩ
680Ω
87.50-108.00 MHz (50 kHz step)
2.5μV (IHF)
2.2μV
75Ω unbalanced
522-1629 kHz (9kHz step)
520-1630 kHz (10kHz step)
560μV/m
Stránka č. 1 z 2
20. 11. 2004

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  • Page 1 Stránka č. 1 z 2 Service Manual TOP NEXT ORDER NO. MD0007118C3 CD Stereo System SA-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...

  • Page 2: How To Enter The Self-Diagnostic Function

    Stránka č. 1 z 1 8.2 How to enter the Self-Diagnostic 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.

  • Page 3: Cassette Mechanism Test

    Stránka č. 1 z 1 8.3 Cassette Mechanism Test (For error code H01, H02, H03, F01, F02) TOP PREVIOUS NEXT 1. Press “TAPE, DECK 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.

  • Page 4: Cd Mechanism Test

    Stránka č. 1 z 1 8.4 CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15, F75) TOP PREVIOUS NEXT 1. Press “CD”. 2. Press “CD MANAGER”. 3. Press “ TUNE MODE” to indicate Error Code. If several problem exist, error code will change each time when “ STOP TUNE ¡...

  • Page 5: To Clear All Error Code

    Stránka č. 1 z 1 8.5 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 file://C:\Documents%20and%20Settings\Admin\Plocha\SCHÉMATA\VIDEA\PAN... 20. 11. 2004 http://servis-manual.com/...

  • Page 6: Power Amplifier Failure (F61)

    Stránka č. 1 z 1 8.7 Power Amplifier Failure (F61) TOP PREVIOUS NEXT 1. When power amplifier fail, F61 will indicate automatically. TOP PREVIOUS NEXT file://C:\Documents%20and%20Settings\Admin\Plocha\SCHÉMATA\VIDEA\PAN... 20. 11. 2004 http://servis-manual.com/...

  • Page 7: Error Detection For Cassette Mechanism Block

    Stránka č. 1 z 1 9.1 Error detection for Cassette Mechanism block TOP PREVIOUS NEXT No. Error ErrorDisplay Problem condition MODE SWdetection error Faulty operation of cassette mechanism.Faulty contact or short-circuit of mechanism mode switch (S951, S971). REC INH SWdetection Recording not possible.Faulty contact or short-circuit of REC INH switch (S974, S975).

  • Page 8: Error Detection For Cd/Changer Block

    Stránka č. 1 z 1 9.2 Error detection for CD/Changer block TOP PREVIOUS NEXT No. Error ErrorDisplay Problem condition REST SW detection error 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) CD tray opens automatically CLAMP switch (S4) NG (Check &...

  • Page 9: Power Supply Related Error Detection

    Stránka č. 1 z 1 9.3 Power Supply related error detection TOP PREVIOUS NEXT No. Error ErrorDisplay Problem condition POWER AMPoutput When POWER is switched on, power become off automatically.During normal operation, if DC DET abnormal become L, PCNT shall become L and the error display on the left shall be displayed.

  • Page 10: Cd Test Mode Function

    Stránka č. 1 z 1 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 Automatic Alignment result is shown on FL display.
  • Page 11 Stránka č. 1 z 1 10.1 How to enter the Self-Diagnostic 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.

  • Page 12: Cd Automatically Adjustment Result Indication

    Stránka č. 1 z 1 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 adjustment 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.

  • Page 13: Cd Servo Circuit

    Stránka č. 1 z 1 16.1 CD servo circuit TOP PREVIOUS NEXT TOP PREVIOUS NEXT file://C:\Documents%20and%20Settings\Admin\Plocha\SCHÉMATA\VIDEA\PAN... 20. 11. 2004...
  • Page 14 Circuit diagram CN1000 X701 16.9344MHz 59 58 78 IC1003 L ch INVERTER IC1000 Audio signal MPEG output R ch IC702 VIDEO AUDIO IC701 X1000 DECODER SERVO 27MHz Sub-code Q data IC401 SYS CONT. Video signal output CD-DA/ VCD CD-DA/ VCD(AUDIO) VCD(VIDEO) Clock line (AUDIO&VIDEO)
  • Page 15 MASTER CLOCK SYSTEM WAVEFORM AUDIO DATA CLOCK SYSTEM WAVEFORM Video read clock Write reference clock Audio bit clock T=0.037 s T=0.354 s T=0.5 s 6.2V 3.0V 2.4V F=27MHz F=2.822MHz F=2MHz Diagnostic Procedures by Symptom Symptom Likely Location Fault CD-DA Video-CD TOC NG (both audio and video For TOC NG, fault in the CD servo circuit.
  • Page 16 Troubleshooting CD-DA No sound Procedure1 CD-DA: Compact disc digital audio(convertional CD only with audio tracks) Troubleshooting flowchart Likely location of fault Load a CD-DA disc. Press the SELECT( ) button to start playback. Press the STOP( )button to stop playback. Taverse deck.
  • Page 17 Troubleshooting Video CD No picture or No sound Procedure2-1 Troubleshooting flowchart Likely location of fault Load a video CD disc. Press the SELECT( ) button to start playback. Connected to TV Not connected to TV Does the menu appear on screen? Press the STOP( )button to stop playback.
  • Page 18 Troubleshooting Video CD blue back No blue back Procedure2-2 Troubleshooting flowchart Likely location of fault Load a video CD disc. Press the SELECT( ) button to start playback. Press the STOP( )button to stop playback. Does blue-back screen appear? Normal Is the following waveform present at pin of CN1000? T=63.5 s...
  • Page 19 SCHEMATIC DIAGRAM-5 :TAPE PLAYBACK SIGNAL LINE DECK CIRCUIT :POSITIVE VOLTAGE LINE :TAPE RECORDING SIGNAL LINE 14.8V R1103 C1193 C1101 1000P 1000P R1102 Q1101 ((0V)) 100K ((4.2V)) 2SJ498CDTA DECK1 HEAD SELECT ((0V)) (REC:ON) CS1101 L ch PLAYBACK HEAD Q1103 ((0V)) ((4.4V)) 2SJ498CDTA R ch HEAD SELECT...

  • Page 20: Schematic Diagram

    SCHEMATIC DIAGRAM-6 :TAPE PLAYBACK SIGNAL LINE :POSITIVE VOLTAGE LINE :TAPE RECORDING SIGNAL LINE 14.8V C1133 50V4.7 Q1107 DTC144TKA146 P.B EQ/ REC EQ (CrO / H.SPEED) R1121 ((4.8V)):CrO ((0V)) ((0V)) C1129 C1131 C1135 C1146 820P 820P 1000P 16V10 R1115 R1146 390K C1115 R1109 C1127...
  • Page 21 SCHEMATIC DIAGRAM-7 :TAPE PLAYBACK SIGNAL LINE :POSITIVE VOLTAGE LINE : TAPE RECORDING SIGNAL LINE 14.8V Q1151,1152 DTC144TKA146 R1151 C1165 SWITCHING(PLAY:ON) 16V10 ((8.8V)) ((2.6V)) Q1153 0.1V ((0V)) ((3.8V)) Q1151 ((2.1V)) Q1153,1154 2SC2412KT96R MUTING 0.1V ((3.8V)) Q1152 ((2.1V)) ((2.6V)) Q1154 ((0V)) ((8.8V)) R1152 C1166 16V10...
  • Page 22 SCHEMATIC DIAGRAM-8 :TAPE PLAYBACK SIGNAL LINE :POSITIVE VOLTAGE LINE :TAPE RECORDING SIGNAL LINE 14.8V H1101 M.GND MO.GND 10.4V +B(5) D.GND MAIN (CONTROL) R1144 +B(3) CIRCUIT (CN304) Rch IN ON SCHEMATIC Lch IN DIAGRAM-17 R1143 A.GND Rch OUT Z1101 Lch OUT TP10 5.1V CN1201...
  • Page 23 SCHEMATIC DIAGRAM-16 :POSITIVE VOLTAGE LINE :CENTER SP. DRIVE SIGNAL LINE DPL CIRCUIT :NEGATIVE VOLTAGE LINE :CD-DA/V-CD(AUDIO) SIGNAL LINE :SURROUND SP. DRIVE SIGNAL LINE C851 16V220 C829 16V220 C861 50V2.2 C830 16V10 IC802 C831 16V10 BA178M09T C832 16V10 REGULATOR C833 16V10 C834 OUT GND 9.1V...
  • Page 24 SCHEMATIC DIAGRAM-17 :POSITIVE VOLTAGE LINE :AM SIGNAL LINE :NEGATIVE VOLTAGE LINE :TAPE PLAYBACK SIGNAL LINE MAIN(CONTROL) CIRCUIT :CD-DA/V-CD (AUDIO) SIGNAL LINE :TAPE RECORD SIGNAL LINE :FM SIGNAL LINE 14.8V 7.7V R409 R410 IC304 R434 C448 R445 R446 C449 2.2K 50V3.3 2.7K 16V10 BA4558FE2...
  • Page 25 SCHEMATIC DIAGRAM-18 :MIC SIGNAL LINE :CD-DA/V-CD(AUDIO) SIGNAL LINE :SURROUND SP. DRIVE SIGNAL LINE :CD-DA/V-CD(AUDIO&VIDEO) SIGNAL LINE :CENTER SP. DRIVE SIGNAL LINE :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE PANEL CIRCUIT(CP602) 14.8V ON SCHEMATIC DIAGRAM-15 7.7V -7.9V 8.6V 10.4V 18 19 24 25 CN302 C B A CN303...
  • Page 26 SCHEMATIC DIAGRAM-19 :POSITIVE VOLTAGE LINE :AM SIGNAL LINE :MIC SIGNAL LINE :NEGATIVE VOLTAGE LINE :TAPE PLAYBACK SIGNAL LINE :CD-DA/V-CD (AUDIO) SIGNAL LINE :TAPE RECORD SIGNAL LINE :FM SIGNAL LINE -7.9V IC302 C228 R225 R224 R248 R249 Q200,400 16V10 3.6K M5218AP KTD1304TA BUFFER AMP MUTING...
  • Page 27 SCHEMATIC DIAGRAM-20 :CD-DA/V-CD(AUDIO) SIGNAL LINE :V-CD(VIDEO) SIGNAL LINE :POSITIVE VOLTAGE LINE :CD-DA/V-CD(AUDIO&VIDEO) SIGNAL LINE :NEGATIVE VOLTAGE LINE VIDEO CIRCUIT(CN1000) ON SCHEMATIC DIAGRAM-10 JK301 Q363 VIDEO OUT 2SD2144STA D301 UDZSTE175R1B MUTING R364 D303 Q364 UDZSTE175R1B CN308 KRA102STA MUTING CONT. C372 R375 C369 0.01 0.47...
  • Page 28 SCHEMATIC DIAGRAM-21 :POSITIVE VOLTAGE LINE :SURROUND SP. DRIVE SIGNAL LINE :NEGATIVE VOLTAGE LINE :CENTER SP. DRIVE SIGNAL LINE :CD-DA/V-CD (AUDIO) SIGNAL LINE R436 C440 IC301 2.2K 50V1 M62456FPE1 C322 R336 R337 0.068 8.2K BTL BASS BOOST C435 R431 0.018 R444 C441 100P C436...

  • Page 29: Panel Circuit

    SCHEMATIC DIAGRAM-11 :CD-DA/V-CD(AUDIO) SIGNAL LINE OPERATION(1) CIRCUIT :POSITIVE VOLTAGE LINE :MIC SIGNAL LINE R616 R615 R611 R610 R609 R608 R607 R614 R613 R612 2.7K 2.2K 1.8K 1.2K 6.8K 4.7K H600 R606 D600-604 SLR325MCT31W OPERATION(2) CIRCUIT SW600 (SOUND CONTROL JOG) R617 R618 R619 R620...
  • Page 30 SCHEMATIC DIAGRAM-12 :POSITIVE VOLTAGE LINE :MIC SIGNAL LINE Q602 KTA12710YTA POWER SUPPLY 8.6V 8.6V 8.6V 8.6V H601 7.8V R650 4.7K R635 R653 R633 2.2K 0.2V 4.4V 0.2V IC601 BU2090AF-E2 LED DRIVE R627 0.4V 4.6V 0.7V 5.1V D607 D606 SLI325URCT31 SLI325DCT31 (STANDBY) (REC/PLAY TIMER) R643...
  • Page 31 SCHEMATIC DIAGRAM-13 :POSITIVE VOLTAGE LINE :MIC SIGNAL LINE Z600 RCDRPM6937H4 (REMOTE SENSOR) 1.1V 2.4V 2.4V 2.4V IC603 M62457FPE1 R693 SPE.ANA LYZER 2.5V 1.5V 2.5V 2.5V 2.5V 2.5V 2.5V C652 50V0.1 VR600 (VOLUME) D630 R955 RVD1SS133TA 470K 5.8V 5.2V Q605 4.4V 2SA933SSTA POWER SUPPLY 5.1V...
  • Page 32 SCHEMATIC DIAGRAM-14 :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE -31V D617 RVD1SS133TA L605 3.3µH 5.1V R918 C645 220K 16V10 100 99 98 97 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 D636 RVD1SS133TA -20.2V SEG14 CRT/SER4 -17.8V...
  • Page 33 SCHEMATIC DIAGRAM-15 :POSITIVE VOLTAGE LINE :CD-DA/V-CD (AUDIO) SIGNAL LINE :NEGATIVE VOLTAGE LINE -31V FL600(RSL0296-F) D638 L606 MA4020LTA 100µH FL DISPLAY 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 27 28 29 30 33 34 35 38 39 40 41 42 43 44 45 46 47 48 49 51 52 53...

  • Page 34: Power Circuit

    SCHEMATIC DIAGRAM-22 :CD-DA/V-CD (AUDIO) SIGNAL LINE :POSITIVE VOLTAGE LINE :SURROUND SP. DRIVE SIGNAL LINE POWER CIRCUIT :NEGATIVE VOLTAGE LINE :CENTER SP. DRIVE SIGNAL LINE IC500 RSN311W64A-P POWER AMP(HIGH,MID,LOW) -28.5V 60.2V -30V 29.5V -0.2V 0.2V -29.7V 29.1V -60.7V R552 R502 R553 4.7K C500 470P...
  • Page 35 SCHEMATIC DIAGRAM-23 :CD-DA/V-CD (AUDIO) SIGNAL LINE :POSITIVE VOLTAGE LINE :SURROUND SP. DRIVE SIGNAL LINE :NEGATIVE VOLTAGE LINE :CENTER SP. DRIVE SIGNAL LINE IC501 STK470-040 REGULATOR JK502 L ch (6 ) R ch 14.5V 9.8V 10.4V -27.8V -8.5V -7.9V 7.7V 14.8V 16.0V 28.0V 60V 29.2V -29.7V -60.7V C544...
  • Page 36 SCHEMATIC DIAGRAM-24 AC TRANSFORMER CIRCUIT SUB-TRANS CIRCUIT Q976 2SD2144STA POWER SUPPLY D979 R985 R980 R981 T502 1D3E 10.4V 27.1V W500 CN500 8.9V R982 C979 820K 1000P Q977 2SD2037ETA Z501 POWER SUPPLY D981 C978 1D3E 0.01 5.8V 10.4V JK500 L500 6.5V D984 1SS291TA T3.15A...
  • Page 37 SCHEMATIC DIAGRAM-1 :POSITIVE VOLTAGE LINE NOTE: CD SERVO CIRCUIT :CD-DA/V-CD(AUDIO & VIDEO) SIGNAL LINE The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2" indicates the schematic diagram serial number located on the left corner in the schematic diagram.
  • Page 38 SCHEMATIC DIAGRAM-2 :POSITIVE VOLTAGE LINE :CD-DA/V-CD(AUDIO & VIDEO) SIGNAL LINE :CD-DA/V-CD(AUDIO) SIGNAL LINE 3.3V TP21 R717 R719 PLAY 2.2V 1kHz, 0dB C731 TP23 R718 R720 6.3V220 1.5V C730 F=16.9344MHz 5.1V 3.3V C722 PLAY 3.2V 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 F=44.1kHz PLAY 3.3V...
  • Page 39 SCHEMATIC DIAGRAM-3 :FM SIGNAL LINE :AM SIGNAL LINE MAIN(TUNER) CIRCUIT :POSITIVE VOLTAGE LINE :FM OSC SIGNAL LINE :AM OSC SIGNAL LINE TUNER PACK CIRCUIT Z120 FM FRONT END (RAL0029) 2SC2786MTA FM MIXER 2SK544F-AC 0.47 2.2P RF AMP 5.6P JK101 FM ANT R103 100K 680K...

  • Page 40: Main(Control)Circuit

    SCHEMATIC DIAGRAM-4 :POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE R104 R107 R106 CF202 470K CF201 C104 10.3V Q106 1000P 0.7V KRA102MTA POWER SUPPLY Q101 (FM:ON) 2SC2058SPTA LINE FM IF AMP 14.8V 14.7V 14.8V 14.5V 14.8V 14.7V 2.8V...
  • Page 41 SCHEMATIC DIAGRAM-9 :POSITIVE VOLTAGE LINE :CD-DA/V-CD(AUDIO) SIGNAL LINE VIDEO CIRCUIT :CD-DA/V-CD(AUDIO & VIDEO) SIGNAL LINE :V-CD(VIDEO) SIGNAL LINE IC1003 TC7WU04FUT2L INVERTER 1.3V 1.4V 1.4V 0.9V F=27MHz 3.3V 1.6V K L M R1000 5.6K X1000 (27MHz) 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 3.3V 3.3V...
  • Page 42 SCHEMATIC DIAGRAM-10 :POSITIVE VOLTAGE LINE :CD-DA/V-CD(AUDIO & VIDEO) SIGNAL LINE :CD-DA/V-CD(AUDIO) SIGNAL LINE :V-CD(VIDEO) SIGNAL LINE IC1004 P O N M L K J I W X Y Z a TC7W14FUTE1L INVERTER TP23 1.6V TP25 TP11 1.6V 1.6V TP12 TP27 1.6V TP17 TP19...

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