Panasonic SX-PX554 Service Manual
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Panasonic SX-PX554 Service Manual

Panasonic SX-PX554 Service Manual

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ORDER NO. EMID0004007C0
A5
Digital Piano
SX-PX554 / SX-PX554M
(P) U.S.A.
(PC) Canada
(PY) Mexico
(EX) Norway, Sweden, Denmark, Finland, Spain, Portugal, Greece,
South Africa
(EZ) Germany
(EG) Switzerland, Italy, Austria, Holland, Belgium, France
(EB) the United Kingdom
(GN) Australia, New Zealand
(XS) Malaysia, Singapore
(XT) Taiwan
(X) Thailand, Columbia, Panama, Philippines
(XA) Argentina
(XD) Hong, Kong
SPECIFICATIONS
SPECIFICATIONS
1

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  • Page 1 ORDER NO. EMID0004007C0 Digital Piano SX-PX554 / SX-PX554M (P) U.S.A. (PC) Canada (PY) Mexico (EX) Norway, Sweden, Denmark, Finland, Spain, Portugal, Greece, South Africa (EZ) Germany (EG) Switzerland, Italy, Austria, Holland, Belgium, France (EB) the United Kingdom (GN) Australia, New Zealand...
  • Page 2 88 KEYS KEYBOARD 64 NOTES MAX. POLYPHONY 18 SOUNDS: CONCERT SOUND GRAND, POP GRAND, UPRIGHT, E PIANO 1, E PIANO 2, HARPSI, VIBES, STRINGS, VOCAL, ORGAN PRESETS SOFT, SOSTENUTO, SUSTAIN PEDAL MELLOW, BRIGHT (5 STEPS) BRILLIANCE Supported DIGITAL EFFECT Supported (ROOM, STAGE, DIGITAL REVERB HALL, CONCERT) LIGHT, NORMAL, HEAVY...
  • Page 3 1. WARNING To prevent the risk of fire, smoke, or electrical shock and to ensure safe operation, please be sure to follow the safety guidelines below. 1. At places where special caution is required, the necessary safety precautions are clearly labeled or printed, for example, on the cabinet, or on the part concerned.

  • Page 4: Safety Precaution

    6.5 mm.). 2. SAFETY PRECAUTION 2.1. Safety precaution 1. Before servicing, unplug the power cord to prevent an electric shock. 2. When replacing parts, use only the manufacturer’s recommended components for safety. 3. Check the condition of the power cord. Replace if wear or damage is evident.
  • Page 5 To prevent the piano unit from falling off the stand, secure it firmly with the screws. 1. Assemble the right and left planks - Assemble the right and left planks to the pedal box with the 4 brass -colored screws. - Loosen the pedal cord, stowed on the inner side of the pedal box, and extend it.

  • Page 6: Keyboard Ranges

    - Place the piano body on the stand and secure it with 4 black screws A. Figure-4 4. Connect the pedal cord and power cord - Connect the pedal cord and power cord to the terminals located on the rear of the piano unit as shown below. - Secure the pedal cord to the clamps as shown in the figure.

  • Page 7: Parts Location

    Figure-6 6. PARTS LOCATION Figure-7 7. DISASSEMBLY INSTRUCTIONS 7.1. Removing the top cover 1. Remove the top cover mounting screws (A 4 pcs.) as shown in Figure-8. 2. Slide the top cover forward and lift up (as shown by the arrows). 7.2.
  • Page 8 1. Remove the top cover (see step “Removing the top cover”). 2. Match the gears of the keyboard cover with the notches in the guide rail, and lift up the keyboard cover as shown in Figure-8. Figure-8 7.3. Removing the control panel - Pull out the connectors on the control panel.
  • Page 9 2. Remove the keyboard assembly mounting screws located on the bottom of the cabinet (A 10 pcs.) as shown in Figure-10. Figure-10 7.5. Key(s) Disassembly 1. Remove the keyboard assembly (see step “Removing the keyboard assembly”). 2. While inserting a thin plate to press down a claw, push the rear of the key forward to disengage the key claw from the chassis.

  • Page 10: Disassembly Of The Pedal 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. 4.

  • Page 11: Remove The Control Panel

    Speakers (14 cm) - Remove the speakers mounting screws (B 4 pcs. each). Speakers (6.5 cm) - Remove the speakers mounting screws (C 4 pcs. each). Figure-14 7.8. Removing the printed circuit boards - Remove the top cover (see step “Removing the top cover”).

  • Page 12: Self-Diagnostic Functions

    ”). 2. Pull the MAIN VOLUME knob. 3. Remove the CPL P.C.B. mounting screws (H 10 pcs., I 3pcs., J 1 pc., and K 1 pc.). CPR P.C.B. 1. Remove the control panel (see step “Removing the control panel ”). 2.
  • Page 13 TEST MODE Procedure 1. Connect the CHECKING DEVICE to CN9 on the MAIN P.C.B., and turn on the CHECKING DEVICE MAIN RAM (IC8,9), ROM 2. Turn on the power switch. (IC6) check 1. Connect the CHECKING DEVICE to CN9 on the MAIN P.C.B. (the Checking Device switch should CPU (IC1) check 2.

  • Page 15: Test Mode

    TEST MODE Procedure 1. Press and hold the two E keys shown below, and then turn on the power switch. Wave ROM check MAIN 2. Select the POP GROUND sound. MAIN: IC12, IC18 3. Reduce the MAIN VOLUME level low enough. When set to the self-diagnostic mode, the Wave ROM outputs a sine The Wave ROMs correspond to the keyboard keys as shown in the to the right.

  • Page 16: Precautions Before Servicing

    TEST MODE Procedure Control Panel buttons Press and hold the two F keys shown below, and then turn on the LED lighting check switch. Press the buttons on the control and confirm that the corresponding light. Control Panel LED Press and hold the two G keys shown below, and then turn on the display check switch.
  • Page 17 output as a sine wave to facilitate the servicing check. 9.2. Important safety notice - Components identified by a mark have special characteristics important for safety. - When replacing any of these components, use only manufacture’s specified parts. 9.3. Symbolic marks The symbolic marks for resistors and capacitors which used in this circuits are classified as following Table-1...

  • Page 18: Specification

    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 Metallized Plastic Film Capacitors ECQV_type (TF Series) Temperature Compensating ECC_type Ceramic Capacitors High-Dielecytric Constant Ceramic ECK_type, ECR_type Capacitors Axial Lead Ceramic Capacitors ECB_type Metallized Polyester Film ECQ_EW_type...
  • Page 19 10.2. Measuring condition of FAJSP 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. - SOUND: CONCERT GRAND - MAIN VOLUME: Max. - Keyboard: A Check Point 1,2 Set to the Initial mode (refer to “OWNERS...
  • Page 20 11. SCHEMATIC DIAGRAM 12. PRINTED CIRCUIT BOARD 12.1. MAIN, FAJSP, CPL P.C.B. 12.2. CPR, MKB1, MKB2, PKB, COM, HP P.C.B. 13. BLOCK DIAGRAM 14. WIRING CONNECTION DIAGRAM 15. 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 21 *MAIN, FAJSP, CPL, CPR, MKB1, MKB2, COM and HP in Remarks indicate the Circuits and P. C. B.s. If the same Ref. No. is found in the replacement parts list, check those indications in the Remarks. Ref. No. Part No. Part Name &...
  • Page 22 Ref. No. Part No. Part Name & Description Remarks QKQGN995AAZK LEFT PLANK QKQGN995ABZK LEFT PLANK SX-PX554M QKQGN996AAZK RIGHT PLANK QKQGN996ABZK RIGHT PLANK SX-PX554M QAQG033AAK LEFT LEG ASS'Y QAQG033ABK LEFT LEG ASS'Y SX-PX554M 31-1 SHRG2130B-K FOOT 31-2 XTB4+16A SCREW QAQG034AAK RIGHT LEG ASS'Y QAQG034ABK RIGHT LEG ASS'Y SX-PX554M...
  • Page 23 Ref. No. Part No. Part Name & Description Remarks QMWG6020AA RUBBER SWITCH(12 PCS,ON O XNS12FZ XTT4+10A SCREW XTB4+12A SCREW XTW3+8J SCREW XTN4+16F SCREW WITH WASHER XTT4+14A SCREW XTB35+14A SCREW XYN4+F16FZ SCREW XTB35+10A SCREW XTW3+10Q SCREW XTV3+20JFZ SCREW XTT4+12AFZ SCREW XYA35+JA12 SCREW XYN3+C8FZ SCREW...
  • Page 24 Ref. No. Part No. Part Name & Description Remarks ECRR1H104ZF 0.1UF ECKF1E473ZV 0.047UF ECRF1H104ZF 0.1UF MKB1 ECUV1C224KBX 0.22UF MAIN ECKF1E473ZV 0.047UF ECQU2A104MN 0.1UF,250V FJASP ECUV1C224KBX 0.22UF MAIN QCBG1H104ZFA 0.1UF ECBT1E223ZF5 0.022UF ECRF1H104ZF 0.1UF ECRR1H104ZF1 0.1UF MAIN ECA1VM472E 4700UF,35V FJASP ECEA0JKA470 47UF,6.3V MKB1 ECEA0JKS101B...
  • Page 25 ECQB1H153JF3 0.015UF FJASP...
  • Page 26 Ref. No. Part No. Part Name & Description Remarks ECUV1H101JG 100PF MAIN ECQG1H682KZT 0.0068UF FJASP ECUV1H104ZFX 0.1UF MAIN ECQG1H332KZT 0.0033UF FJASP ECUV1H104ZFX 0.1UF MAIN ECEA1CKA470B 47UF,16V MAIN ECQG1H222KZT 0.0022UF FJASP ECQB1H103JF3 0.01UF FJASP EECS5R5V105 1F,5.5V MAIN ECEA1HKN010B 1UF,50V FJASP ECUV1H104ZFX 0.1UF MAIN ECQB1H473JF3...
  • Page 27 Ref. No. Part No. Part Name & Description Remarks ECUV1H104ZFX 0.1UF MAIN ECBT1C222MR5 0.0022UF FJASP ECUV1H104ZFX 0.1UF MAIN ECBT1C222MR5 0.0022UF FJASP ECCR1H104ZF1 0.1UF FJASP ECUV1H104ZFX 0.1UF MAIN ECEA1CKA100B 10UF,16V MAIN C63,64 ECUV1H104ZFX 0.1UF MAIN ECCR1H221J5 220PF FJASP ECEA1CKA100B 10UF,16V MAIN ECEA1HKNR47B 0.47UF,50V MAIN...
  • Page 28 Ref. No. Part No. Part Name & Description Remarks SJPG1JS120A CONNECTOR FJASP SJPG1JS070A CONNECTOR MAIN SJPG1JS070A CONNECTOR FJASP SJPG1310A CONNECTOR FJASP QJUG00212AA CONNECTOR MKB1 SJPG1340A CONNECTOR FJASP SJPG1JS100A CONNECTOR MAIN QJUG01408AA CONNECTOR MKB1 SJPG1JS040A CONNECTOR MAIN ERA1502V5 DIODE ;FJASP MA165 DIODE MKB1 MA165TA5...
  • Page 29 Ref. No. Part No. Part Name & Description Remarks D14,15 MA165 DIODE MKB1 MA165TA5 DIODE FJASP MA8056MTX ZENER MAIN MA165 DIODE MKB1 MA165TA5 DIODE FJASP MA8047HTX Z.DIODE MAIN MA111TX DIODE MAIN MA165 DIODE MKB1 MA165TA5 DIODE FJASP MA165TA5 DIODE MA111TX DIODE MAIN MA165...
  • Page 30 D43-49 MA165 DIODE MKB1...
  • Page 31 Ref. No. Part No. Part Name & Description Remarks MA165TA5 DIODE D50-59 MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE D61-65 MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE MA165 DIODE MKB1 MA165TA5 DIODE...
  • Page 32 HD74LS07P 3 TO 8 DECODER...
  • Page 33 Ref. No. Part No. Part Name & Description Remarks KIA7915PI -15V VOLTAGE REGULATOR FJASP HD74LS07P 3 TO 8 DECODER HD74LS138P 3 TO 8 DECODER MKB2 M5218AL OPERATIONAL AMP FJASP M5M34051FPE2 BUS TRANSCEIVER MAIN HD74LS138P 3 TO 8 DECODER MKB2 M5218AL OPERATIONAL AMP FJASP T7WU04FTE12L...
  • Page 34 Ref. No. Part No. Part Name & Description Remarks QLBG005A COIL MAIN QLQGT3T131LA 130UH×3 FJASP L8,L9 ERJ6GEY0R00V CHIP JUMPER MAIN L11,12 ERJ6GEY0R00V CHIP JUMPER MAIN L14-27 ERJ6GEY0R00V CHIP JUMPER MAIN L29-31 ERJ6GEY0R00V CHIP JUMPER MAIN L33-35 ERJ6GEY0R00V CHIP JUMPER MAIN L41-45 ERJ6GEY0R00V CHIP JUMPER...
  • Page 35 2SA1725PY TRANSISTOR FJASP...
  • Page 36 Ref. No. Part No. Part Name & Description Remarks 2SC4511PY TRANSISTOR FJASP 2SA1725PY TRANSISTOR FJASP 2SC4511PY TRANSISTOR FJASP 2SA933STRS TRANSISTOR FJASP ERDS2TJ103T FJASP ERDS2TJ472T 4.7K ERG1SJ470 47,1W,FLAME-PROOF ERDS2T0T 0,1/4W ERDS2TJ103T FJASP ERG1SJ470 47,1W,FLAME-PROOF ERJ6GEYJ472V 4.7K MAIN ERD2FCVJ6R8T 6.8,1/4W,FUSE TYPE FJASP ERDS2T0T 0,1/4W ERG1SJ470...
  • Page 37 Ref. No. Part No. Part Name & Description Remarks ERJ6GEYJ152V 1.5K MAIN QLQGT1B800MB 80UH FJASP ERDS2TJ103T ERDS2TJ332T 3.3K FJASP ERJ6GEYJ152V 1.5K MAIN ERDS2TJ103T ERDS2TJ334T 330K FJASP ERJ6GEYJ103V MAIN ERDS2TJ103T ERDS2TJ274T 270K FJASP ERJ6GEY0R00V MAIN ERDS2TJ222T 2.2K FJASP ERJ6GEY0R00V MAIN ERDS2TJ103T ERDS2TJ220T FJASP ERJ6GEY0R00V...
  • Page 38 Ref. No. Part No. Part Name & Description Remarks ERDS2TJ101T ERDS2TJ332T 3.3K FJASP ERJ6GEYJ105V MAIN ERDS2TJ101T ERDS2TJ223T FJASP ERJ6GEYJ472V 4.7K MAIN ERDS2TJ101T ERDS2TJ223T FJASP ERDS2TJ563T FJASP ERDS2TJ682T 6.8K FJASP ERJ6GEYJ222V 2.2K MAIN ERDS2TJ682T 6.8K FJASP ERJ6GEYJ222V 2.2K MAIN ERDS2TJ102T FJASP ERJ6GEYJ222V 2.2K MAIN...
  • Page 39 Ref. No. Part No. Part Name & Description Remarks ERDS2TJ102T FJASP ERJ6GEYJ471V MAIN ERDS2TJ184T 180K FJASP ERJ6GEYJ221V MAIN ERDS2TJ272T 2.7K FJASP ERJ6GEYJ221V MAIN ERDS2TJ224T 220K FJASP ERJ6GEYJ105V MAIN ERDS2TJ223T FJASP ERJ6GEYJ103V MAIN ERDS2TJ564T 560K FJASP ERDS2TJ102T FJASP ERDS2TJ272T 2.7K FJASP EROS2TKF1001 FJASP EROS2TKF1002...
  • Page 40 R106,07 ERJ6GEYJ104V 100K MAIN...
  • Page 41 Ref. No. Part No. Part Name & Description Remarks R110 ERDS2TJ151T FJASP R111 ERDS2TJ330T FJASP R111,12 ERJ6GEYJ103V MAIN R113 ERDS2TJ221T FJASP R113 ERJ6GEYJ471V MAIN R114 ERDS2TJ331T FJASP R114 ERJ6GEYJ471V MAIN R115 ERQ14AJ2R0E 2,1/4W FUSE TYPE FJASP R116 ERJ6GEYJ471V MAIN R116 ERQ14AJ2R0E 2,1/4W FUSE TYPE FJASP...

  • Page 42: Cabinet Parts Location

    Ref. No. Part No. Part Name & Description Remarks QEXSS05028A CONNECTOR WITH WIRE QEXGSS6030B CONNECTOR WITH WIRE QEXGSS10015A CONNECTOR WITH WIRE QEXGSS07010A CONNECTOR WITH WIRE QEXGSS12010A CONNECTOR WITH WIRE QEXGVH04075F CONNECTOR WITH WIRE QEXGSS16022C CONNECTOR WITH WIRE QEXGVH05055C CONNECTOR WITH WIRE QEXGSS06105A CONNECTOR WITH WIRE QEXGVH03105B...
  • Page 45 17. PACKAGING...
  • Page 46 / Printed in Japan / S000501540 HM/AM...
  • Page 47 MAIN P.C.B. (COMPONENT SIDE) Z32 Z21 Z20 Z19 Z18 Z17 TG CLOCK R204 C116 IC12 C108 C121 C106 IC10 R102 IC11 IC21 C107 R106 C105 R201 IC26 C120 R107 C109 R105 IC22 Z33 Z31 Z30 Z29 Z28 Z27 C110 TG CLOCK C101 IC18 IC16...
  • Page 48 ELECTRICAL PARTS LOCATION Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. MAIN P.C.B. (COMPONENT SIDE) IC10 IC11 IC12 IC16 R102 IC17 R105 IC18 R106 IC21 R107 IC22 R111 IC26 R112 R116 R201 R202 R204 R211 C101 C105 C106 C107 C108 C109...
  • Page 49 MAIN P.C.B. (FOIL SIDE) L30 L29 L16L17L18 L19L20L21L22 D25D26 C111 R113 IC14 R114 R200 C117 R104 R103 C100 IC15 IC20 R210 R117 R118...
  • Page 50 ELECTRICAL PARTS LOCATION Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. MAIN P.C.B. (FOIL SIDE) IC14 IC15 IC20 R103 R104 R113 R114 R117 R118 R200 R210 C100 C111 C117...
  • Page 51 FJASP P.C.B. PMUT R102 J15 J14 J J J 2 2 2 2 4 4 4 4 4 J J J 2 2 2 2 4 4 4 4 4 R104 R116 R28 R22 R106 R113 R115 R61 R60 IC10 IC12 R65 R64 R114...
  • Page 52 ELECTRICAL PARTS LOCATION Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. FJASP P.C.B. IC10 IC11 IC12 R100 R102 R104 R106 R110 R111 R113 R114 R115 R116...
  • Page 53 CPL P.C.B. JP10 Q6 Q5 CONCERT J1 J2 GRAND GRAND D265 D264 MODE SW59 SW65 SW66 SW60 DEMO JP17 JP12 JP11 ORGAN UPRIGHT E.PIANO1 E.PIANO2 VIBES STRINGS VOCAL PRESETS R34 R35 DIGITAL D266 D267 D256 D257 D258 D259 D291 D288 D289 J36 J37 REVERB...
  • Page 54 CPR P.C.B. J5 J6 METRONOME MELLOW BRIGHT D232 D233 D240 VOLUME /BEAT LED1 D241 TEMPO TEMPO DOWN D242 SW10 SW41 SW42 START TRANSPOSE TRANSPOSE /STOP RECORD TRACK1 TRACK2 DOWN D236 D239 D235 D237 D238 D234 TOUCH D244 D245 D246 SW18 SW33 SW17 SW25...
  • Page 55 MKB1 P.C.B. D72 D70 SW40 SW38 SW32 SW30 SW29 SW28 SW27 SW26 SW25 SW24 SW23 SW43 SW42 SW41 SW39 SW37 SW36 SW35 SW34 SW33 SW31 SW44 D25 J6 SW19 SW18 SW15 SW22 SW21 SW20 SW17 SW16 SW14 SW13 SW12 SW11 SW10 ELECTRICAL PARTS LOCATION Ref.No.
  • Page 56 MKB2 P.C.B. D142 D140 D138 D136 D134 D176 D174 D172 D170 D168 D166 D164 D162 J17 D160 D158 D156 D154 D152 D150 D148 D146 D144 D167 D165 D163 D159 D157 D155 D151 D149 D147 D145 D139 D137 D135 D133 D175 D173 D171 D169...
  • Page 57 PKB P.C.B. JR1 JR3 SUSTAIN SOSUTENUTO SOFT ELECTRICAL PARTS LOCATION Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. PKB P.C.B.
  • Page 58 COM P.C.B. COMPUTER ELECTRICAL PARTS LOCATION Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. COM P.C.B. HP P.C.B. HEADPHONE1 HEADPHONE2 POWER INDICATOR ELECTRICAL PARTS LOCATION Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. Ref.No. Lo.No. HP P.C.B.
  • Page 59 MAIN CIRCUIT +5D 2 1.5K SOFT 3 1.5K FJASP SOSU 4 1.5K SUST 5 MRXD 6 MTXD 7 2.2K MA8030HTX 2SB709ARTX 0.22 2SD601AQTX 0.22 100K 100K SW 2 CHECK TERMINAL LED 3 +5D 4 MAC 1 PC1 2 M5M34051FPE2 PC2 3 (BUS TRANSCEIVER) MIDI 4 MSEL 5...
  • Page 60 2SD601AQTX +15V 2SB709ARTX R113 R114 4.7K MA8056MTX A B C A B C D E F G H I J K L 100x4 P70/PG00 P71/PG01 P72/PG02 P61/CS1 P73/PG03 P62/CS2 P20/A16 P74/PG10 P63/CAS P21/A17 P75/PG11 P64/RAS P22/A18 P76/PG12 P65/REFOUT P23/A19 P77/PG13 P24/A20 P25/A21 P80/TXD0...
  • Page 61 QLQGT1B101KA 2SB621ARSTA 100x4 100P 35V47 2SC1815TPE2 100x4 EK04W D74HC139GSE2 100x4 (DECORDER) 100x4 A B C 2SD601AQTX 3.3K D6 13 D5 14 D4 15 D3 16 D2 17 D1 18 D0 19 QSIGX3C04005 /SQTG9011A /X27C4096DC10 M5256DFP70LL M5256DFP70LL (4MBIT MASK ROM) (256KBIT STATIC RAM) (256KBIT STATIC RAM)
  • Page 62 A B C N H I G J F D K C B A H A G B F +3.3 TG CLOCK NRSTSG RAMDT2 NRSTCPU RAMDT4 RAMDT3 SDIREV SDOREV SDICH0 SDOCH0 SDIDRY SDODRY TEMODE3 TEMODE2 2.2K DIVOUT SDOMIX LRCK IC10 ROMDT11 D97315GD201 ROMDT4...
  • Page 63 TG CLOCK QLQGT1B100MA QLBG005A QLBG005A QLBG005A IC15 TC7W04FTE12L (TRIPLE INVERTER) A B C M N H I G J F D K C B A +VCC 1 2 3 4 5 6 7 8 R65 1M +3.3 H A G B F QSXG1A1128A NRSTSG RAMDT2...
  • Page 64 IC14 TC7W08FTE12L (DUAL 2-INPUT AND GATE) VCC BYTE R201 1 2 3 4 5 6 7 8 AD21 2SC1815TPE2 +3.3 R202 VSS VSS MA1039HTR IC12 IC11 QSIGX3C64002 LH5P832N-10 (64MBIT MASK ROM) (256KBIT PSEUDO STATIC RAM) IC20 TC7W08FTE12L (DUAL 2-INPUT AND GATE) VCC BYTE 1 2 3 4 5 6 7 8 R211...
  • Page 65 C107 100P C116 6V100 IC21 PCM1734EA-E2 R103 C105 R106 (D/A CONVERTER) 50N0.47 100K 330x4 LRCK ML/IIS C108 PMUT DATA MC/DW1 FJASP +VCC BCK MD/DW0 CLKO MUTE +15V -VCC -15V MODE IC26 +15V CS/IW0 M5218AFPE3 R102 (OP.AMP) SUMR DGND SUML ZERO VCC2R VCC2L AG2R AG2L...
  • Page 66 FJASP CIRCUIT PRODUCTS FOR X XS XT XD XA POWER TRANSFORMER QSRGT006AA BLUE 4700P BLACK JK9 L1 POWER 100uHx2 CORD BLUE ERA1502V5 ERA1502V5 PRODUCTS FOR P PC PY 4700P JK9 L1 100uHx2 LINE OUT L 0.0022 LINE OUT R /R+L 0.0022 PRODUCTS FOR OTHERS 4700P...
  • Page 67 D3-D10 KIA7815PI +15M +VCC SVDGS3V20-15 (+15 VOLTAGE REGULATOR) 2SA1015TPE2 4.7K MA4180TA 35V4700 16V10 2SA1015TPE2 2SA1015TPE2 35V4700 16V330 +15HM 4.7K MA4180TA EK04W 2SC1815TPE2 3.3K -VCC -15M KIA7915PI (-15 VOLTAGE REGULATOR) 130uHx3 2SC1815TPE2 PMUT R100 2SC1815TPE2 100K MA165TA5 PMUT 130uHx3 6.8K 50N1 0.01 0.47 0.0015...
  • Page 68 PINL 0.15 560K +VCC 0.015 0.0068 +15M 180K 2SA1725PY 2.7K 2SC1815TPE2 +VCC 0.022 MA165TA5 M5218AL (EQUALIZING) MA165TA5 -VCC M125V2.5A P,PC +15M 2SA1015TPE2 E250V2A OTHERS 2.7K 0.015 0.0068 -15M 2SC4511PY EK04W +VCC 180K IC11 -VCC M5218AL (POWER AMPLIFIER) +VCC -VCC +15M 0.0033 0.0022 2SA1725PY...
  • Page 69 R102 PEDAL IN R104 +5DM R106 +5DM R110 MIDI OUT R111 MA165TA5 2SA933STRS 220P MA165TA5 IC12 QCPL-260L (PHOTO COUPLER) R113 MIDI IN +5DM R114 MA165TA5 VOUT 0.047 50V1 EOINL 330K C43 10P 2SB621ARSTA R25 270K 2.2K 2SD592ARSTA +VCC M5218AL (HEADPHONE AMPLIFIER) -VCC 2SB621ARSTA 2.2K...
  • Page 70 CPL CIRCUIT +5IP M37471M2196S (8BIT MICROCOMPUTER) +5IP 4MHz 4.7K XOUT +5IP 0.022 6.3V100 +5IP VREF DATA 2SA830STPB 6.3V100 MAIN 2SA830STPB SOUT 2SA830STPB R8 470 CNTR1 2SA830STPB +5IP 100K 2SA830STPB SUMR SUML MAIN VOLR VOLL ------ QRVG25P01B53 SEG0 SEG1 SEG2 SEG3 +5IP SEG4 SEG5...
  • Page 71 SW65 SW89 SW73 SW81 CONCERT DIGITAL E.PIANO2 VOCAL GRAND REVERB SW82 SW66 SW74 ORGAN POP GRAND HARPSI PRESETS SW59 SW67 SW75 DEMO UPRIGHT VIBES SW60 SW84 SW68 SW76 MODE DIGITAL E.PIANO1 STRINGS EFFECT D256 D257 D258 D259 LN282RPXVTX2 LN282RPXVTX2 LN282RPXVTX2 LN282RPXVTX2 E.PIANO2 HARPSI...
  • Page 72 CPR CIRCUIT TEMP MELLOW DOWN SW10 TEMP BRIGHT D232 D233 LN282RPXVTX2 LN282RPXVTX2 MELLOW BRIGHT D240 D241 LN282RPXVTX2 LN282RPXVTX2 METRONOME VOLUME UNLESS OTHERWISE SPECIFIED: SWITCHES ARE EVQ21507K, DIODES ARE MA165TA5.
  • Page 73 SW17 SW33 SW25 SW41 SW49 START TRANSPOSE TRACK1 METRONOME TOUCH /STOP DOWN SW34 SW18 SW26 SW42 TRANSPOSE RECORD TRACK2 VOLUME D234 D235 D236 D237 D238 LN282RPXVTX2 LN282RPXVTX2 LN282RPXVTX2 LN282RPXVTX2 LN282RPXVTX2 START/STOP RECORD TRACK1 TRACK2 TRANSPOSE DOWN D242 D244 D245 D246 LN282RPXVTX2 LN282RPXVTX2 LN282RPXVTX2...
  • Page 74 10 27 23 17 28 22 12 14 19 18 D239 LN282RPXVTX2 TRANSPOSE UP 21 16 24 20 15 LED1 T512SRDBS119...
  • Page 75 MKB1 CIRCUIT HD74LS138P +VCC (3 TO 8 DECODER) 6.3V47 MAIN UNLESS OTHERWISE SPECIFIED: DIODES ARE MA165.
  • Page 77 MKB2 CIRCUIT UNLESS OTHERWISE SPECIFIED: DIODES ARE MA165.
  • Page 78 HD74LS138P (3 TO 8 DECODER) +VCC...
  • Page 79 HD74LS138P (3 TO 8 DECODER) +VCC...
  • Page 81 PKB CIRCUIT PEDAL CORD CN1 +5 PEDAL QSTGT001AA QSTGT001AA QSTGT001AA 4.7K 4.7K 4.7K COM CIRCUIT COMPUTER MIDI MSEL MAIN WGE05 TXD- MIDI TXD+ 1,7,8 COMPUTER RXD+ WGE05 RXD- WGE05 WGE05 WGE05 WGE05...
  • Page 82 COM P.C.B. MAIN P.C.B. QEXGSS07010A QEXGSS12010A QEXGST160608 QEXGHVH02055C CORE CORE 6.5cm,8 QEXGSS16022C CPL P.C.B. 14cm,6 CORE MKB1 P.C.B. QEXGSS16022C QEXGSS16022C HP P.C.B.
  • Page 83 AC CORD FJASP P.C.B. AC IN POWER TRANSFORMER POWER SWITCH QEXGVH03105B QEXGVH02040B 6.5cm,8 CPR P.C.B. 14cm,6 MKB2 P.C.B. PKB P.C.B.
  • Page 84 Press one of the SOUND buttons to select the desired sound. Each sound features Touch Response, which increases the volume when the keyboard is DIGITAL REVERB applies a played harder. reverberation effect to the sound. Select The sounds can be mixed when two from four echo types—ROOM, STAGE, SOUND buttons are pressed simultaneously.
  • Page 85 The BRILLIANCE allows you to select the brightness of the sound from 5 settings. If either of the buttons is pressed once, the current setting value will appear on the display, and it can then be changed. The keyboard touch (Touch Response) can be Pressing the BRIGHT button increases the changed to match your type of playing.
  • Page 86 (On the back of piano) LINE OUT AUX IN MIDI COMPUTER PEDAL IN R + L R + L MIDI PEDAL IN COMPUTER Connect the cord from the included stand to this By connecting this terminal to the serial port of terminal.
  • Page 87 Phenomenon Remedy No sound is produced when the No sound is produced if the MAIN VOLUME is set to MIN. keyboard is played. Use the sliding control to set the volume to an appropriate level. If the MIDI LOCAL CONTROL is set to off, set it to on. Nothing is shown on the display.
  • Page 88 Digital piano [ SX-PX554/M ] Transmitted Recognized Remarks Function Basic Default 1-16 memorized 1-16 Channel Changed 1-16 1-16 1, 3 memorized Default × × Mode Messages Altered Note 0-127 *21-108 Number True voice *0-127 〇 〇 Velocity Note ON × ( 9nH: V=0) ×...
  • Page 89 MKB1 MKB2 DECODER COMPUTER SWITCHES MIDI & DECODER DECODER DIODES SWITCHES & DIODES IC10 SDOMIX RXD,TXD,SCKIN,SCKOUT CRXD CTXD MAC,PC1, KDB0 KDB4 KDB0 KDB4 PC2,MIDI KF3, KS0 KF3, KS0 16BIT TONE MICROCOMPUTER GENERATOR SOFT, SODU, MRXD MTXD SUST IC16 DATA BUS SDOMIX D0 D19 D8 D15...
  • Page 90 MAIN SWITCHES & LEDS SWITCHES & LEDS +15V +5A REGULATOR IC2,3 Q2 6 BUFFER LED DRIVE MAIN -15V VOLUME SEG0 SEG11 CM0 CM5 SW0 SW7 LED1 8BIT MICROCOMPUTER +VCC DATA,SCK LED DISPLAY Q7,8 +5D REGULATOR +3.3V +3.3V REGULATOR IC21 IC26A CONVERTER IC22 IC26B...
  • Page 91 FJASP +15V +VCC D7,8 +15V POWER REGULATOR POWER TRANSFORMER SWITCH -15V -VCC D5,6 -15V REGULATOR AC CORD +VCC SP3 (Lch) 6.5cm; 8 IC11B IC3B IC5,6,9,10A Q11,12,15,16 SP1 (Lch) 14cm; 4 IC11A IC3A IC7,8,9,10B Q13,14,17,18 SP2 (Rch) 14cm; 4 MIXING EQUALIZING POWER AMPLIFIER SP4 (Rch)

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