ORDER NO. MD0004055C3 CD Stereo System SA-AK18 Colour (S)... Silver Type Area (GC)...Asia, Latin America, Africa and Middle Near East (GN)...Oceania TAPE SECTION : AR2 MECHANISM SERIES CD SECTION : RAE0152Z-3 TRAVERSE DECK SERIES Specifications AMPLIFIER SECTION (GC area) AM TUNER SECTION (GC area)
SA-AK18 1 Before Repair and Adjustment Disconnect AC power, discharge Power Supply Capacitors C536, C545, C546, C548 and C555 through a 10 Ω, 5W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
SA-AK18 4 Handling Precautions For Traverse Deck The laser diode in the traverse deck (optical pickup) may break Grounding for electrostatic breakdown prevention down due to potential difference caused by static electricity of 1. Human body grounding clothes or human body.
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SA-AK18 Maximale Strahlungsleistung der Lasereinheit :100W/VDE Die Strahlung an der Lasereinheit ist ungefährlich, wenn folgende Punkte beachtet werden: 1. Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefährlich ist. 2. Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.
SA-AK18 7 Operation Checks and Main Component Replacement Procedures “ATTENTION SERVICER” Some chassis components may have sharp edges. Be careful when disassembling and servicing. 1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components.
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SA-AK18 • Checking for Power P.C.B. Step 5 Remove the wire at CP605 and CN309. Step 6 Release the 2 catches and remove the CD changer base together with the CD changer. • Checking for Main, Panel and Deck P.C.B...
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SA-AK18 7.2. Main Component Replacement Procedures Note: 7.2.1. Replacement of the Traverse Deck Insert a short pin into the flexible cable for traverse unit. Step 1 Follow the procedures in ‘Disassembly of the Traverse • Installation of the CD servo P.C.B. after replacement Unit’...
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SA-AK18 Step 6 Unsolder the terminals of Power Amp IC and replace 7.2.2. Replacement of the Power the respective component. Amplifier IC Step 1 Follow the procedures in ‘Checking Procedure for each major P.C.B.’ ( Step 1 - Step 6 ).
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SA-AK18 7.3. Disassembly and assembly of the Traverse Unit Step 1 Push the lever from position A to B. Step 2 Pull the stopper (black) in the direction of arrow 1 and push the lever in the direction of arrow 2.
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SA-AK18 7.4. Disassembly and assembly of the Disc Tray Step 5 Rotate the hexagonal wrench in the direction of arrow (clockwise), and then open the disc tray fully. Step 2 With lifting the claw in the direction of arrow 1, draw the clamp SW P.C.B.
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SA-AK18 Step 8 With forcing the left guide bar manually because the left Step 3 Align the drive rack with the drive gear. guide bar interferes with claw, draw the disc tray. • Installation of the disc tray after replacement Step 1 Slide the drive rack fully in the direction of the arrow.
SA-AK18 8 Self-Diagnostic Function 8.1. Self-diagnostic display This unit is equipped with a self-diagnostic display function which, if a problem occurs, will display an error code corresponding to the problem. Use this function when performing maintenance on the unit. 8.2.
SA-AK18 4. Press “OPEN/CLOSE (5)” and wait until the tray is open. 5. Press “OPEN/CLOSE (1)” and remove the CD. 6. Press “OPEN/CLOSE (1)” to close the tray. 7. Press “ /TUNE MODE” to indicate Error Code. • If several problem exist, error code will change each time when “ /TUNE MODE” is pressed. (e.g. F15 → F26 → F16 ..etc).
SA-AK18 10 CD Test Mode Function This CD test mode is provided to check CD unit without 10.2. CD Automatically Adjustment connecting to changer loading mechanism. This mode shall result indication operate CD PLAY with CD unit being connected only and CD Automatic Alignment result is shown on FL display.
SA-AK18 11.1.3. Bias 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 “ REC/STOP” key). 3. Measure and make sure that the output is within the standard value.
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SA-AK18 11.2.2. AM-RF Alignment SIGNAL GENERATOR OR SWEEP RADIO DIAL SETTING INDICATOR ADJUSTMENT REMARKS GENERATOR (ELECTRONIC (Shown in Fig.3) VOLTMETER CONNECTIONS FREQUENCY OSCILLOSCOPE) Fashion a loop of 522 kHz Tuning capacitor fully closed Headphones Jack (32Ω) Z152 (GC), Adjust for maximum output.
SA-AK18 13 Terminal Function of ICs 13.1. IC701 (AN8839NSBE2) Servo Amplifier Pin No. Mark Function Pin No. Mark Function Tracking signal input 1 /RFDET NRFDET output (“L” : detection) Tracking signal input 2 PDOWN Power-down input Power supply OFTR OFTR output Focus signal input terminal 1 N.C.
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SA-AK18 Mark Function Mark Function EFM signal output CLVS Spindle servo phase synchronizing signal output PLL extraction clock output ("H" : CLV, "L" : rough servo) (fPCK = 4.321 MHz during normal playback) Sub-code checked output (“H” :OK, “L” :NG) VCOF2 VCO Loop filter for 33.8688...
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SA-AK18 Mark Function Mark Function J_JOG_AB EQ Joy jog A-D detection EEDAT EEPROM data input input EECLK EEPROM chip select output CHG_AD1 (OPEN/CLAMP)Changer Power supply (-30V) switch A-D detection input 1 AVSS Analog Ground (0V) CHG_AD2 (POSITION/BOTTOM) VREF Reference for A-D...
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SA-AK18 This page is only applicable for GN/GT areas AM ANT FM ANT Z101 (FM) CF201 CF202 Z120 Q101 COIL COIL MIXER IF AMP RF AMP IC101 LA1833NMNTLM BUFFER FM/AM IF AMP, DET/AM OSC, MIX/FM MPX (FM) DECODER RF AMP...
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SA-AK18 This page is only applicable for GC areas FM ANT CF201 CF202 Z120 Q101 MIXER IF AMP RF AMP BUFFER IC101 LA1833NMNTLM FM/AM IF AMP, DET/AM OSC, (FM) MIX/FM MPX Q152 Q151 Z151 SWITCH SWITCH COIL COIL DECODER RF AMP...
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SA-AK18 TA7291P MOTOR DRIVE OUT1 OUT2 POWER SUPPLY CONTROL Q902 STATUS INTERFACE Q901 SUBQ INTEFACE ST/DO Q903 BLKCK INTERFACE Q350 /CDRST PLUNGER SUPPLY RESTSW Q351 DRIVER SWITCH SUPPLY CE/MLD MLD/PLLCE DI/MDATA MDATA/PLLDA CL/MCLK SYSTEM CONTROL/FL DRIVE M38199MF227 IC600 MCLK/PLLCLK...
SA-AK18 15 Schematic Diagram (All schematic diagrams may be modified at any time with the S626 EQ adjust right switch development of the new technology) S627 Disc 3 select switch S628 Economy Mode switch Note: S629 Stop,Tune Mode select switch...
SA-AK18 SCHEMATIC DIAGRAM-1 : + B Line : CD Signal Line CD SERVO CIRCUIT OPTICAL PICKUP PLAY CIRCUIT 0.6V C701 6.3V33 R701 C703 0.5us. 0.2V/DIV 6.3V100 Q701 2.7V Q701 3.2V 2SA1037AKSTX LASER DIODE ((2.3V)) C704 CN701 LASER POWER DRIVE 0.9V...
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SA-AK18 SCHEMATIC DIAGRAM-2 : + B Line : CD Signal Line R717 C727 50V1 C725 1000P R721 C726 1000P C728 R718 50V1 C743 PLAY 2.2V CN702 Lch OUT 1KHz, 0dB A.GND C731 C753 Rch OUT 470P 6.3V220 +3.3V D.GND C730...
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SA-AK18 SCHEMATIC DIAGRAM-3 : +B : FM Signal Line : AM Signal Line : FM OSC Signal Line : AM OSC Signal Line MAIN/TUNER CIRCUIT (FOR GC ONLY) [0V] (0V) <0V> Q101 [0V] Q101 TUNER PACK CIRCUIT (0V) 2SC2058SPTA <0.7V>...
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SA-AK18 SCHEMATIC DIAGRAM-4 : +B Line : FM Signal Line : AM Signal Line : FM/AM Signal Line : FM OSC Signal Line : AM OSC Signal Line Q107 R117 [3.8V] (4.3V) [0.1V] <4V> R108 (0.1V) C116 C120 <0.1V> 16V10 0.033...
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SA-AK18 SCHEMATIC DIAGRAM-5 : +B Line : Main Signal Line : Playback Signal Line : FM/AM Signal Line : -B Line : AUX Signal Line : CD Signal Line : Record Signal Line : MIC Signal Line 40mA R401 JK305...
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SA-AK18 SCHEMATIC DIAGRAM-6 : +B Line : -B Line : Main Signal Line CN301 PGND GND2 R249 R449 Q200,Q400 C232 C432 +7.5V +7.5V KTD1304TA 3300P 3300P -7.0V R322 MUTING -7.0V R248 R448 C233 C225 POWER 50V10 50V3.3 C313 CIRCUIT CD7.5V CD7.5V...
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SA-AK18 SCHEMATIC DIAGRAM-7 : +B Line : FM Signal Line : AM Signal Line : FM/AM Signal Line : FM OSC Signal Line : AM OSC Signal Line MAIN/TUNER CIRCUIT (FOR GN ONLY) TUNER PACK CIRCUIT (0V) Q101 <0V> 2SC2058SPTA...
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SA-AK18 SCHEMATIC DIAGRAM-8 : +B Line : Main Signal Line : Playback Signal Line : FM/AM Signal Line : -B Line : AUX Signal Line : CD Signal Line : Record Signal Line MAIN/TUNER CIRCUIT 40mA R401 JK305 R310 R321...
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SA-AK18 SCHEMATIC DIAGRAM-9 : -B Line : +B Line : Main Signal Line CN301 PGND GND2 R249 R449 R322 Q200,Q400 +7.5V C232 C432 +7.5V KTD1304TA 3300P 3300P -7.0V MUTING -7.0V R248 R448 C313 C233 C225 POWER 50V10 50V3.3 CIRCUIT CD7.5V CD7.5V...
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SA-AK18 SCHEMATIC DIAGRAM-10 : +B Line : -B Line : MAIN Signal Line : CD Signal Line TACT SWITCH (1) PANEL CIRCUIT CIRCUIT (FOR GC ONLY) H602/W602A H602/W602B CTRL+B 8G P1 C612 R661 D615 35V22 R650 R659 D614 R657 D610...
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SA-AK18 CD Signal Line : MIC Signal Line FL600 RSL0295-F Q605,Q606 KTC3199GRTA P21 9G P22 P32 7G 1G 13G FL DRIVE C634 35V22 R964 -28.1V R949 R907 ((-28.1V)) 100K R698 <-28.1V> -28. R914 ((-28 100K -28.3V <-28 ((-28.3V)) 4.2V <-28.3V>...
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SA-AK18 SCHEMATIC DIAGRAM-11 : +B Line : -B Line : MAIN Signal Line : CD Signal Line TACT SWITCH (1) PANEL CIRCUIT CIRCUIT (FOR GN ONLY) H602/W602A H602/W602B CTRL+B 8G P1 C612 R661 D615 35V22 R650 R659 D614 R657 D610...
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SA-AK18 D Signal Line : MIC Signal Line FL600 RSL0295-F Q605,Q606 KTC3199GRTA 1G 13G P21 9G P22 P32 7G FL DRIVE C634 35V22 R964 -28.1V R949 R907 ((-28.1V)) 100K R698 <-28.1V> -28.1V R914 ((-28. 100K -28.3V <-28.1 ((-28.3V)) 4.2V <-28.3V>...
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SA-AK18 SCHEMATIC DIAGRAM-15 : +B Line MOTOR CIRCUIT TA7291P MOTOR DRIVE 16V100 0.01 R1 1K MTZJ4R7BTA CD DETACT CIRCUIT PLUNGER BOTTOMSW POSITION PSLED D_GND MAIN CIRCUIT P_GND (CN309) ON SCHEMATIC DIAGRAM-6...GC OPEN SCHEMATIC CLAMP DIAGRAM-9...GN GP1S94 DRIVEPOWER HALF RVTDTC143EST POWER SUPPLY...
SA-AK18 16 Printed Circuit Board Note: Circuit board diagrams may be modified at any time with the development of new technology. CD SERVO P.C.B (REPX0192A) (RF) TP20 X701 TJ701 TP23 C717 R714 TP19 TP21 TP29 C716 C721 C744 R709 TP24...
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SA-AK18 MAIN / TUNER P.C.B (REPX0199B) FM ANT MW ANT SW ANT JK101 C303 R171 L104 C159 Z120 (TUNER PACK) R156 R168 R165 Z152 J151 D151 R164 C300 J234 J389 Q157 J239 J343 R162 J406 Q153 R155 J405 J232 J148...
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SA-AK18 AC TRANS (REPX0202B...GC) T501 (POWER TRANSFORMER) RL502 D977 R986 PRIMARY Q975 D982 SECONDARY R984 C978 D984 R988 R979 Q978 J507 Q977 R985 CN502 D978 J506 CN501 CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE. PLEASE DO NOT TOUCH THIS PCB.
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SA-AK18 AC TRANS P.C.B (REPX0203F...GN) T501 (POWER TRANSFORMER) RL502 230V 230V-240V D979 D980 C984 C978 PRIMARY D982 SECONDARY D985 R988 R976 R980 R979 Q978 R978 CN501 CN502 8 7 6 5 4 3 2 1 CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE.
SA-AK18 17 Wiring Connection Diagram FM ANT SPEAKER AM ANT SOLDER SIDE JK101 JK500 JK305 CN300 TUNER PACK P.C.B MOTOR P.C.B SOLDER SIDE CP501 Z120 SOLDER SIDE (TUNER PACK) POWER MAIN/TUNER P.C.B P.C.B CD DETACT P.C.B CP500 CN301 CN309 CN302 CN303 .
SA-AK18 19 Parts Location and Replacement Parts List Notes: • Important safety notice: Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardent (resistors), high-quality sound (capacitors), low noise (resistors), etc are used.
SA-AK18 19.1.2. Deck Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks CASSETTE DECK RED0063 P/B HEAD BLOCK UNIT 101-1 RHE5152ZB SCREW RED0064 R/P HEAD BLOCK UNIT 102-1 RHE5152ZB SCREW RDG0300 REEL BASE GEAR RDG0301 WINDING RELAY GEAR...
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SA-AK18 19.2. CD Loading Mechanism (RD-DAC026-S) 19.2.1. CD Loading Mechanism Parts Location...
SA-AK18 19.2.2. CD Loading Mechanism Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks TRAVERSE DECK RME0261 FRONT LOCK SPRING RMQ0742 SPINDLE BASE RML0517 TIMING LEVER RML0516 PLUNGER LEVER...
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SA-AK18 19.3. Cabinet 19.3.1. Cabinet Parts Location...
SA-AK18 19.3.2. Cabinet Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks CABINET AND CHASSIS RKMX0046B-S TOP CABINET (BENT) RYQ0271-A1 JOY JOG UNIT REEX0065 20P FFC RGW0330A-S VOLUME KNOB...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks Q504 2SC2785FTA TRANSISTOR D507 RL1N4003S-P DIODE Q505 2SC2785FTA TRANSISTOR D508 RL1N4003S-P DIODE Q507 2SC1740SSTA TRANSISTOR D509 RL1N4003S-P DIODE Q508 2SC1740SSTA TRANSISTOR...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks S604 EVQ21405R SW CD MANAGER CP1001 RJT071K09A 9P B/B CONNECTOR S605 EVQ21405R SW TUNER CP1002 RJT071K09A 9P B/B CONNECTOR S606 EVQ21405R...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks EYF52BC FUSE HOLDER [M]GC R112 ERJ6GEYJ104V 100K 1/10W [M]GN EYF52BC FUSE HOLDER [M]GC R113 ERJ6GEYJ103V 10K 1/10W R114 ERJ6GEYJ562V 5.6K 1/10W...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R224 ERJ6GEYJ153V 15K 1/10W R454 ERJ6GEYJ103V 10K 1/10W R225 ERJ6GEYJ332V 3.3K 1/10W R455 ERJ6GEYJ103V 10K 1/10W R226 ERJ6GEYJ101V 100 1/10W R456 ERJ6GEYJ472V 4.7K 1/10W...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R628 ERDS2TJ470T 47 1/4W [M]GC R708 ERJ6GEYJ223A 22K 1/10W R629 ERDS2TJ122T 1.2K 1/4W R709 ERJ6GEYJ683A 68K 1/10W R630 ERDS2TJ682T 6.8K 1/4W...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R950 ERDS2TJ223T 22K 1/4W R1037 ERJ6GEYJ104V 100K 1/10W R951 ERDS2TJ103T 10K 1/4W R1038 ERJ6GEYJ472V 4.7K 1/10W R952 ERDS2TJ331T 330 1/4W R1039...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C101 ECUV1H103KBN 0.01 50V C221 ECUZ1E563KBN 0.056 25V C102 ECEA1CKA100B 10 16V C222 ECUZ1H471KBN 470P 50V C103 ECUV1H103KBN 0.01 50V C223...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C511 ECBT1H102KB5 1000P 50V C643 ECBT1H561KB5 560P 50V C512 ECKR1H103ZF5 0.01 50V C644 ECBT1H561KB5 560P 50V C513 ECEA1HM470B 47 50V C645...
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SA-AK18 Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks C752 ECUZ1H102KBN 1000P 50V C753 ECUZ1H471KBM 470P 50V CHIP JUMPER C754 ECUZ1H471KBN 470P 50V C900 ECBT1H101KB5 100P 50V RJ701 ERJ6GEY0R00A 0 1/10W...
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SA-AK18 19.5. Packing Materials & Accessories Parts List Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks PACKING MATERIALS RJA0043-1C AC CORD [MAVD]EG E RJA0044-3C AC CORD [MAVD]EB RPGX0599 PACKING CASE...