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Technics SX-PR53 Service Manual
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Technics SX-PR53 Service Manual

Technics SX-PR53 Service Manual

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ORDER NO. EMID0006012C0
A5
Digital Ensemble
SX-PR53 / SX-PR53M
(P) U.S.A.
(PC) Canada
(PY) Mexico
(EX) Norway, Sweden, Denmark, Finland, Spain, Portugal, South
Africa
(EF) France
(EZ) Germany
(EG) Switzerland, Italy, Austria, Holland, Belgium
(EB) the United Kingdom
(GN) Australia, New Zealand
(XS) Malaysia, Singapore
(XT) Taiwan
(X) Columbia, Panama, Chile, Brazil, Philippines, Venezuela, Ecuador
(XA) Argentina
(XD) Saudi Arabia, Hong Kong, Kuwait
SPECIFICATIONS

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Summary of Contents for Technics SX-PR53

  • Page 1 ORDER NO. EMID0006012C0 Digital Ensemble SX-PR53 / SX-PR53M (P) U.S.A. (PC) Canada (PY) Mexico (EX) Norway, Sweden, Denmark, Finland, Spain, Portugal, South Africa (EF) France (EZ) Germany (EG) Switzerland, Italy, Austria, Holland, Belgium (EB) the United Kingdom (GN) Australia, New Zealand...

  • Page 2: Specifications

    SPECIFICATIONS 88 KEYS KEYBOARD SOUND GENERATOR 32 NOTES MAXIMUM NUMBER OF NOTES PRODUCED SIMULTANEOUSLY PIANO MODE, KEYBOARD PLAY STYLE SPLIT, AUTO PLAY CHORD SOUNDS NUMBER OF SOUNDS: 252 SOUNDS + 12 DRUM KITS PIANO: GRAND, UPRIGHT, ELECTRIC, MODERN SOUND GROUP: PIANO &...
  • Page 3 Supported TECHNI-CHORD 1-5, SET PANEL MEMORY SEQUENCER 16 TRACKS RESOLUTION: 96 PULSES PER QUARTER-NOTE STRAGE CAPACITY: APPROX.30000 NOTES (10 SONGS MAX.) INPUT MODES: EASY RECORD, REALTIME RECORD, STEP RECORD (CHORD, RHYTHM) FUNCTIONS: TRACK ASSIGN, EDIT,SONG SELECT/NAME, MEDLEY COMPOSER 5 PARTS: BASS, ACCOMP 1, ACCOMP 2, ACCOMP 3, DRUMS STRAGE CAPACITY:...
  • Page 4 AMERICA AND MEXICO) AC230-240 50/60 Hz (EUROPE, AUSTRALIA AND NEW ZEALAND) DIMENSIONS (W×H×D) SX-PR53: 139.7 cm × 103.6 cm × 56.9 cm (55” × 40-25/32” x 22-13/32”) SX-PR53M: 139.7 cm × 104.2 cm × 56.9cm (55” × 41-1/32” x 22-13/32”)

  • Page 5: Safety Precaution

    5. Do not let the wiring come into contact with heat-emitting devices (fuse resistor, radiator plate, etc.). 6. When replacing the wiring, make sure that it is not in contact with the unfinished or rough edge of a part. 7. When replacing the power cord (except for the plug-in type), tug it from various directions to confirm that it does not slip out of place.
  • Page 6 3. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such as screw heads, connectors, control shafts, handle brackets, etc. Measurements should range from 4 M Ohm to infinity for allexposed parts. Figure-1 3.
  • Page 7 4. KEYBOARD RANGES This keyboard features Touch Response, by which you control the volume by playing the keys harder or softer. Figure-2...

  • Page 8: Parts Location

    5. PARTS LOCATION Figure-3 Figure-4...
  • Page 9 6. DISASSEMBLY INSTRUCTIONS 6.1. Removing the top cover 1. Remove the top cover mounting screws (A × 6 pcs.) as shown in Figure-5 2. Lift up the top cover (as shown by the arrows). 6.2. Removing the keyboard cover 1. Remove the top cover (see step “Removing the top cover ”).
  • Page 10 6.3. Removing the control panel 1. Remove the keyboard cover (see step “Removing the keyboard cover ”). 2. Remove the control panel mounting screws (A × 7 pcs.) as shown Figure-6 3. Slide the control panel forward and pull out (as shown by the arrows).
  • Page 11 6.5. Disassembly of the pedal assembly 1. Remove the pedal assembly from the pedal box. 2. Disassemble the pedal assembly as shown in Figure-8 Figure-8 6.6. Key(s) Disassembly 1. Remove the keyboard assembly (see step “Removing the keyboard assembly ”). 2.
  • Page 12 / / / / Assembly 1. Insert the front part of the key into the chassis. 2. Insert the plate spring into the hammer notch as shown in Figure- 3. While slowly lowering the key into the chassis, insert the plate spring into the notch at the rear of the key.
  • Page 13 6.8. Removing the printed circuit boards - Remove the keyboard cover (see step “Removing the keyboard cover ”). - Pull out the connectors on the printed circuit boards. MAIN P.C.B. 1. Remove the MAIN P.C.B. mounting screws (A x 1 pc, B x 2 pcs.). 2.

  • Page 14: Self-Diagnostic Functions

    3. Remove the chassis on which Disk Drive unit is attached (J x 4 pcs.). 4. Remove the Disk Drive unit mounting screws (K x 4 pcs.). 6.10. Removing the speaker boxes and speakers Removing the speaker box 1. Remove the keyboard cover (see step “Removing the keyboard cover ”).
  • Page 15 TEST MODE Procedure 1. Connect the CHECKING DEVICE to CN3 on the MAIN P.C.B., and turn on the CHECKING DEVICE MAIN RAM (IC8), ROM 2. Turn on the power switch. (IC3,6) check When the power switch is turned on, the LED of the CHECKING DEVICE flashes 8 times.

  • Page 16: Test Mode

    TEST MODE Procedure 1. Press and hold the two E keys shown below, and then turn on the power switch. MAIN Wave ROM check 2. Select the GROUND sound.(SINE WAVE TEST) MAIN: IC106 3. Reduce the MAIN VOLUME level low enough. When set to the self-diagnostic mode, the Wave ROM outputs a sine The Wave ROM correspond to the keyboard keys as shown in the When a key is pressed, the corresponding sine wave sound is produced.If...
  • Page 17 2. Since the 1/10 test probe is used, the indicated voltage value on the bottom part of each waveform illustration is 1/10 of the actual value (e.g. 0.2 V/cm should be 2.0 V/cm). 3. To measure the waveforms, first set this unit to the service diagnostic mode (refer to “Wave ROM check on SELF- DIAGNOSTIC FUNCTIONS...

  • Page 18: Measuring Condition

    8.3.2. Capacitors - Capacitors without symbolic mark are POLYESTER CAPACITORS. (ECQM-type, ECQG-type, ±10% Tolerance) - Polarized capacitors without symbolic mark are Aluminum Electrolytic Capacitors. (ECEA-type, ±20% Tolerance) Table-2 SYMBOL SPECIFICATION TYPE Non-Polarized Electrolytic ECEA_KN_type Capacitors Non-Polarized Electrolytic (for ECEA_Y_type Network system) Tantalum Solid Electrolytic ECS_type Capacitors...
  • Page 19 Check Point 1 Set to the Initial mode (refer to “OWNERS MANUAL ”). 9.2. Measuring condition of AS P.C.B. Check Point 3 - 8 Set to the Self-diagnostic Mode followings. - While pressing two E keys simultaneously, turn on the power switch.
  • Page 20 10. SCHEMATIC DIAGRAM 11. PRINTED CIRCUIT BOARD 12. BLOCK DIAGRAM 13. WIRING CONNECTION DIAGRAM 14. 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-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc.
  • Page 78 check those indications in the Remarks. Ref. No. Part No. Part Name & Description Remarks SBNG7050A KNOB QKWG028AB PLATE QMRG2052AA COVER QGPG0118DA CONTROL PANEL (EXCEPT P) QGPG0118DB CONTROL PANEL QMRG5126AA CUSHION QMRG5125AA CUSHON QMFG1140AA FELT QGUG1347AB PUSH BUTTON QGUG1348BA PUSH BUTTON QGUG1350AA PUSH BUTTON QGUG1352DA01...
  • Page 79 Ref. No. Part No. Part Name & Description Remarks SGKG980A LABEL QAUG027AA DISK DRIVE UNIT QMFG1220AA FELT QMGG029AA FLOATING RUBBER QEXGRA01007H WIRE QLZG021A CORE QTPG1M022A POWER TRANSFORMER (P,PC) QTPG1M025A POWER TRANSFORMER (EXCEPT P PC) QSLG021AA QJRG019AA EARTH PLATE QEXGRA01007J WIRE QYKG276AA CABINET ASS'Y (EXCEPT EZ)
  • Page 80 Ref. No. Part No. Part Name & Description Remarks QKQGD101AAZ CROSS BOARD QMBG009AA SPRING QMFG1133AA FELT QMFG1134AA FELT QMFG1135AA FELT QMWG4002AA PEDAL ARM QKAG0011AA FOOT XTW3+10Q SCREW WITH WASHER XYA35+JA12 SCREW QHDG055AA SCREW XTT4+20A SCREW XTWSG2 SCREW XYN4+F16 SCREW XNS12 SCREW QHDG021AA SCREW...
  • Page 81 Ref. No. Part No. Part Name & Description Remarks QMWG8045AA KEY GUIDE QMWG8041AA FUL CU RUM(4PCS.ON ONE) QMWG8040AA FUL CU RUM(12PCS.ON ONE) QMFG1267BA FELT QMFG1268BA FELT QMFG1266BA FELT QMFG1265AA FELT QMWG6020AA RUBER SWITCH QMWG6021AA RUBER SWITCH QMWG8038AA HAMMER SUPPORT (BLACK KEY) 52 QMWG8039AA HAMMER SUPPORT (BLACK KEY) 36 XTV3+20JFZ...
  • Page 82 Ref. No. Part No. Part Name & Description Remarks ECRF1H104ZF 0.1UF MKB1 ECRR1H104ZF 0.1P JACK2 ECRR1H104ZF 0.1P JACK ECUV1H104ZFX 0.1UF MAIN ECCW3F180JGE 18PF ECEA0JKA101 100U 6.3V ECEA0JKA470 47U 6V ECRF1H104ZF 0.1UF MKB1 ECRR1H104ZF 0.1P JACK ECUV1H104ZFX 0.1UF MAIN ECBT1E223ZF5 0.022P ECEA1CKN100B 10UF 16V MAIN...
  • Page 83 Ref. No. Part No. Part Name & Description Remarks ECUV1C224KBX 0.22UF MAIN ECQG1H222KZ 0.0022U ECUV1H104ZFX 0.1UF MAIN ECQB1H103JF3 0.1UF 50V ECUV1H104ZFX 0.1UF MAIN ECQG1H222KZ 0.0022U ECUV1H104ZFX 0.1UF MAIN ECQB1H103JF3 0.1UF 50V ECUV1H104ZFX 0.1UF MAIN ECQB1H223JF 0.022U ECQB1H103JF3 0.1UF 50V ECUV1H104ZFX 0.1UF MAIN ECCR1H100D5...
  • Page 84 Ref. No. Part No. Part Name & Description Remarks ECQV1H104JM 0.1U C101 ECUV1H104ZFX 0.1UF MAIN C102 ECUV1H104ZFX 0.1UF MAIN C103 ECUV1H104ZFX 0.1UF MAIN C104 ECUV1H101JG 100PF MAIN C105 ECUV1H101JG 100PF MAIN C106 ECUV1H104ZFX 0.1UF MAIN C107 ECUV1H101JG 100PF MAIN C109 ECEA0JKA470 47UF 6V MAIN...
  • Page 85 Ref. No. Part No. Part Name & Description Remarks C155 ECUV1H471JG 470P MAIN C156 ECUV1H104ZFX 0.1UF MAIN C157 ECUV1H471JG 470P MAIN C158 ECUV1H104ZFX 0.1UF MAIN QJTG01010AA CONNECTOR QJTG03004BA CONNECTOR SJPG12JS020A CONNECTOR SJPG1JS100A CONNECTOR JACK SJPG1JS140A CONNECTOR MAIN SJPG2JS050A CONNECTOR SJPG2JS050A CONNECTOR SJPG2JS060A CONNECTOR...
  • Page 86 Ref. No. Part No. Part Name & Description Remarks MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT DIODE JACK MA8030LTX ZENER MAIN SVDGS3V20-15 RECTIFIER MA165 DIODE MKB1 MA165TA5VT DIODE MA165TA5VT DIODE JACK SFPB-74V DIODE MAIN SVDGS3V20-15 RECTIFIER MA165 DIODE MKB1 MA165TA5VT DIODE MA2062LF...
  • Page 87 Ref. No. Part No. Part Name & Description Remarks MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT...
  • Page 88 Ref. No. Part No. Part Name & Description Remarks MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165TA5VT DIODE MA165...
  • Page 89 Ref. No. Part No. Part Name & Description Remarks MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5...
  • Page 90 Ref. No. Part No. Part Name & Description Remarks MA165 DIODE MKB2 D100 LN282RPXVTX3 LED(RED) D100 MA165 DIODE MKB2 D100 SEL4117RM LED(RED) D101 LN282RPXVTX3 LED(RED) D101 MA121TX DIODE MAIN D101 MA165 DIODE MKB2 D102 LN282RPXVTX3 LED(RED) D102 MA121TX DIODE MAIN D102 MA165 DIODE...
  • Page 91 Ref. No. Part No. Part Name & Description Remarks D120 SEL4117RM LED(RED) D121 LN282RPXVTX3 LED(RED) D121-76 MA165 DIODE MKB2 D121 SEL4117RM LED(RED) D122 LN282RPXVTX3 LED(RED) D122 SEL4117RM LED(RED) D123 LN282RPXVTX3 LED(RED) D123 SEL4117RM LED(RED) D124 LN282RPXVTX3 LED(RED) D124 SEL4117RM LED(RED) D125 LN282RPXVTX3 LED(RED)
  • Page 92 Ref. No. Part No. Part Name & Description Remarks D154 SEL4117RM LED(RED) D155 LN282RPXVTX3 LED(RED) XBA1C40NU100 4A 125V ACP(P PC) XBA2C16TB0 T1.6AL 250V ACP(X XS XD XT XA) XBA2C10TB0 T1AL 250V ACP(X XS XD XT XA) XBA2C10TB0 T1AL 250V ACP(EXCEPT P PC) XBA1C25NU100 T2AL 250V AS(P PC)
  • Page 93 Ref. No. Part No. Part Name & Description Remarks SJVD0203B AC INLET SJJG100A HP JACK JACK2 QJSG016AA MIDI THRU JACK QJSG016AA MIDI THRU JACK QJJG003AA LINE OUT L JACK QJJG003AA LINE OUT L JACK QJJG003AA LINE OUT L JACK QJJG003AA LINE OUT L JACK ERD25V0R00T...
  • Page 94 Ref. No. Part No. Part Name & Description Remarks 2SB621ARS TRANSISTOR 2SD592ARS TRANSISTOR UN511NTX TRANSISTOR MAIN 2SA830STPB TRANSISTOR 2SA830STPB TRANSISTOR 2SD592ARS TRANSISTOR UN511NTX TRANSISTOR MAIN 2SA830STPB TRANSISTOR 2SA830STPB TRANSISTOR 2SB621ARS TRANSISTOR UN5216TX TRANSISTOR MAIN 2SA1015TPE2 TRANSISTOR 2SA830STPB TRANSISTOR 2SA830STPB TRANSISTOR 2SB709AR TRANSISTOR MAIN...
  • Page 95 Ref. No. Part No. Part Name & Description Remarks ERDS2TJ101 ERDS2TJ102 JACK ERDS2TJ103 ERDS2TJ153 ERG1SJ470 JACK2 ERJ6GEYJ103V MAIN ERDS2T0 ERDS2TJ101 ERG1SJ470 JACK2 ERJ6GEY0R00V MAIN ERDS2TJ101 ERDS2TJ101 ERDS2TJ473T JACK ERG1SJ470 JACK2 ERJ6GEY0R00V MAIN ERDS2TJ101 ERDS2TJ102 JACK ERDS2TJ471 ERJ6GEY0R00V MAIN ERDS2TJ101 ERDS2TJ102 JACK ERDS2TJ221T ERJ6GEYJ224V...
  • Page 96 Ref. No. Part No. Part Name & Description Remarks ERDS2TJ104T 100K ERDS2TJ104T 100K JACK ERDS2TJ224T 220K ERJ6GEYJ683V MAIN ERDS2TJ103 ERDS2TJ104T 100K ERDS2TJ221T JACK ERDS2TJ683T ERJ6GEYJ473V MAIN ERDS2TJ103 ERDS2TJ103 ERDS2TJ331T JACK ERJ6GEYJ154V 150K MAIN ERDS2TJ103 ERDS2TJ103 ERDS2TJ473T ERJ6GEYJ154V 150K MAIN ERDS2TJ103 ERDS2TJ103 ERDS2TJ473T ERJ6GEYJ472V...
  • Page 97 Ref. No. Part No. Part Name & Description Remarks ERDS2TJ103 ERDS2TJ471 ERJ6GEYJ151V MAIN ERDS2TJ103 ERDS2TJ221T ERJ6GEYJ472V 4.7K MAIN ERDS2TJ103 ERDS2TJ153 ERDS2TJ221T ERJ6GEYJ103V MAIN ERDS2TJ101 ERDS2TJ223T ERDS2TJ471 ERJ6GEYJ151V MAIN ERDS2TJ101 ERDS2TJ103 ERJ6GEYJ151V MAIN ERDS2TJ101 ERDS2TJ103 ERDS2TJ103 ERJ6GEYJ103V MAIN ERDS2TJ101 ERDS2TJ103 ERDS2TJ103 ERJ6GEYJ105V 1/10W 1M MAIN...
  • Page 98 Ref. No. Part No. Part Name & Description Remarks ERD2FCVG220 ERJ6GEY0R00V MAIN ERDS2TJ103 ERDS2TJ103 ERJ6GEYJ102V MAIN ERJ6GEYJ682V 6.8K MAIN ERQ14AJ2R0 ERJ6GEYJ470V MAIN ERQ14AJ2R0 ERD2FCVJ6R8 ERJ6GEYJ471V MAIN ERD2FCJ6R8P ERJ6GEYJ101V MAIN ERDS2TJ103 ERJ6GEYJ103V MAIN ERDS2TJ103 ERJ6GEYJ101V MAIN ERDS2TJ103 ERJ6GEYJ102V MAIN ERDS2TJ472 4.7K ERJ6GEYJ473V MAIN ERDS2TJ472...
  • Page 99 Ref. No. Part No. Part Name & Description Remarks R101 ERDS2TJ334 330K R101 ERJ6GEYJ221V MAIN R102 ERJ6GEYJ102V MAIN R103 ERJ6GEYJ102V MAIN R104 ERDS2TJ153 R104 ERJ6GEYJ102V MAIN R105 ERDS2TJ102 R105 ERJ6GEYJ103V MAIN R106 ERDS2FJ222 2.2K R106 ERJ6GEYJ103V MAIN R107 ERDS2FJ222 2.2K R107 ERJ6GEYJ221V MAIN...
  • Page 100 Ref. No. Part No. Part Name & Description Remarks SP1-2 QASG14P02A 14cm 6É EVQ21507K PUSH SWITCH EVQ21507K PUSH SWITCH QSRGT005AA VOLTAGE SELECTOR ACP(X XS XD XT XA) EVQ21507K PUSH SWITCH EVQ21507K PUSH SWITCH EVQ21507K PUSH SWITCH EVQ21507K PUSH SWITCH EVQ21507K PUSH SWITCH EVQ21507K PUSH SWITCH...
  • Page 101 Ref. No. Part No. Part Name & Description Remarks SW32 EVQ21507K PUSH SWITCH SW32 EVQ21507K PUSH SWITCH SW33 EVQ21507K PUSH SWITCH SW33 EVQ21507K PUSH SWITCH SW34 EVQ21507K PUSH SWITCH SW34 EVQ21507K PUSH SWITCH SW35 EVQ21507K PUSH SWITCH SW35 EVQ21507K PUSH SWITCH SW36 EVQ21507K PUSH SWITCH...
  • Page 102 Ref. No. Part No. Part Name & Description Remarks SW69 EVQ21507K PUSH SWITCH SW70 EVQ21507K PUSH SWITCH SW71 EVQ21507K PUSH SWITCH SW72 EVQ21507K PUSH SWITCH SW1-4 — SWITCH MKB1*1 SW5-16 — SWITCH MKB1*1 SW17-28 — SWITCH MKB1*1 SW29-40 — SWITCH MKB1*1 SW41-52 —...
  • Page 103 Ref. No. Part No. Part Name & Description Remarks EXBV8V470J MAIN × 4 EXBV8V470J MAIN × 4 EXBV8V470J MAIN × 4 EXBV8V470J MAIN × 4 EXBV8V102J MAIN × 4 EXBS8V470J MAIN × 4 EXBS8V470J MAIN × 4 EXBS8V470J MAIN × 4 EXBS8V102J MAIN ×...

  • Page 104: Cabinet Parts Location

    *1: Since SW consists of buttons and P.C.B.s, we do not supply it as an individual part (refer to “CABINET PARTS LOCATION ” on the next page). 15. CABINET PARTS LOCATION...
  • Page 106 16. PACKAGING...
  • Page 107 / Printed in Japan / S000800000 HM/AM...
  • Page 108 EMID0102005S0 Digital Ensemble SX-PR53 / SX-PR53M Area (P) U.S.A. (PC) Canada (PY) Mexico (EX) Norway, Sweden, Denmark, Finland, Spain, Portugal, South Africa (EF) France (EZ) Germany (EG) Switzerland, Italy, Austria, Holland, Belgium (EB) the United Kingdom (GN) Australia, New Zealand...

  • Page 109: Cabinet Parts

    Model No. Area Code Order No. Brand SX-PR53 / SX- (P, PC, PY, EX, EF, EZ, EG, EB, EMID0006012C0 Technics PR53M GN, XS, XT, X, XA, XD) 2001 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

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