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PK
001641
SERVICE MANUAL
CONTENTS
SPECIFICATIONS ···································································· 3
PANEL LAYOUT······································································· 4
CIRCUIT BOARD LAYOUT ······················································ 6
BLOCK DIAGRAM ···································································· 8
DISASSEMBLY PROCEDURE················································· 9
LSI PIN DESCRIPTION ·························································· 12
IC BLOCK DIAGRAM ····························································· 14
CIRCUIT BOARDS ································································· 15
TEST PROGRAM ··································································· 24
DATA INITIALIZATION ··························································· 26
MIDI IMPLEMENTATION CHART ·········································· 27
PARTS LIST
OVERALL CIRCUIT DIAGRAM
PSR-280
PSR-282
HAMAMATSU, JAPAN
1.43K-257
Printed in Japan '00.06

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   Summary of Contents for Pioneer PORTATONE PSR-280

  • Page 1 SERVICE MANUAL PSR-280 PSR-282 CONTENTS SPECIFICATIONS ···································································· 3 PANEL LAYOUT······································································· 4 CIRCUIT BOARD LAYOUT ······················································ 6 BLOCK DIAGRAM ···································································· 8 DISASSEMBLY PROCEDURE················································· 9 LSI PIN DESCRIPTION ·························································· 12 IC BLOCK DIAGRAM ····························································· 14 CIRCUIT BOARDS ································································· 15 TEST PROGRAM ··································································· 24 DATA INITIALIZATION ···························································...
  • Page 2 PSR-280/PSR-282 IMPORTANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.
  • Page 3: Specifications

    PSR-280/PSR-282 SPECIFICATIONS Keyboards MIDI • 61 standard-size keys (C1 - C6), with Touch Response and • Clock Dynamic Filter. • Bulk Send/Receive • Initial Send Display Auxiliary jacks • Large multi-function LCD display (backlit) • PHONES/OUTPUT, DC IN 10-12 V, MIDI IN/OUT, SUSTAIN Setup Amplifier •...
  • Page 4: Panel Layout

    PSR-280/PSR-282 PANEL LAYOUT Front Panel Power switch ([STANDBY/ON]) [ACMP ON/OFF] / [A-B REPEAT] button [MASTER VOLUME] dial [SYNC STOP] button [TOUCH] button [SYNC START] / [ PAUSE] button [HARMONY] button [START/STOP] button [Dict.] (DICTIONARY) button [INTRO/ENDING] / [ REW] button LESSON [L] (Left) and [R] (Right) buttons [MAIN/AUTO FILL] / [ FF] button...
  • Page 5 PSR-280/PSR-282 Rear Panel MIDI IN, OUT terminals PHONES/OUTPUT jack SUSTAIN jack DC IN 10-12V jack Display 38 39 40 41 Indicators Song/Voice/Style name and number, Tempo Overall indicator Song track indicators Notation Touch indicator Keyboard Harmony indicator Measure Sync Stop indicator Beat marks Accompaniment On indicator Chord...
  • Page 6: Circuit Board Layout

    PSR-280/PSR-282 CIRCUIT BOARD LAYOUT LCD unit Upper case assembly Keyboard assembly WH500 MKS3 WH040 WH100 WH060 WH050 CN102 CN912 CN810 CN820 WH300 WH200 WH400 WH300 WH400 MK-H MK-L WH020 PN(PW) WH010 WH500 WH040 Speaker R (Tweeter) Speaker L (Tweeter) CN704 CN701 CN705 CN706...
  • Page 7 PSR-280/PSR-282 Location Part No. Connector Assembly Destination Remarks WH010 (V539010) DM-PN-R PN(PNR)-CN701 DM-CN702 WH020 (V539100) PN-R-PN-L PN(PNR)-CN703 PN(PNL)-CN704 WH030 (V539110) PN-L-PN-C PN(PNL)-CN705 PN(PNC)-CN706 WH040 (V539030) DM-VR PN(VR)-CN501 DM-CN501 WH050 (V539060) AM-VR PN(VR)-CN801 AM-CN801 WH060 (V539040) AM-PSW PN(PW)-CN911 AM-CN911 WH100 (V538990) DM-AM1 AM-CN101 DM-CN101...
  • Page 8: Block Diagram

    PSR-280/PSR-282 BLOCK DIAGRAM...
  • Page 9: Disassembly Procedure

    PSR-280/PSR-282 DISASSEMBLY PROCEDURE Lower Case Assembly Remove the fifteen (15) screws marked [260A] and two Remove the battery cover assembly. (Fig. 1) (2) screws marked [270A]. The lower case assembly can then be removed. (Fig. 1) [260A] [270A] [270A] [260A] [260A] [260A] Battery cover assembly...
  • Page 10 PSR-280/PSR-282 Speakers PN(VR), PN(PNL) Circuit Boards Remove the lower case assembly. (See Procedure 1.) Remove the lower case assembly. (See Procedure 1.) Woofer: Remove the AM circuit board. (See Procedure 2.) Remove the four (4) screws marked [280]. The right and PN(VR) Circuit Board: left speakers (woofer) can then be removed.
  • Page 11 PSR-280/PSR-282 [140] Black Keys Hooks A White Keys DFA White Keys Black Keys Rubber contact White Key C' (Fig. 5) White Keys CEGB [140]: Bind Head Tapping Screw-P 3.0 x 16 MFZN2Y (EP600310) or [140]: Bind Head Tapping Screw-P 3.0 x 16 MFZN2BL (VB205200) or [140]: Bind Head Tapping Screw-P 3.0 x 16 MFZN2B (VS756700) (Fig.
  • Page 12: Lsi Pin Description

    PSR-280/PSR-282 LSI PIN DESCRIPTION HG73C205AFD (XU947C00) SWX00B (Tone Generator) DM: IC101 NAME FUNCTION NAME FUNCTION Initial clear CMA3 Program address bus RFCLKI PLL Clock CMA8 Program address bus PLL Control CMA2 Program address bus AVDD_PLL Power supply read signal Program address bus AVSS_PLL Ground CMA1...
  • Page 13 PSR-280/PSR-282 HD63B05V0F073P (XR951A00) CPU MKS3: IC1 NAME FUNCTION NAME FUNCTION /RES Reset /INT Interrupt request Non-maskable interrupt Port C Port A Port D D3/TX (Serial data output) D4/RX (Serial data input) D5//CK (Clock for serial operation) D6//INT2 (Interrupt request 2) Port B /STBY (Standby mode signal)
  • Page 14: Ic Block Diagram

    PSR-280/PSR-282 IC BLOCK DIAGRAM µPC4570C (XC520A00) µPD6379AGR (XR998A00) Dual Operational Amplifier D/A Converter DM: IC502 DM: IC501 AM: IC810,820 +DC Voltage Rch analog Output A Power supply Supply output Inverting Voltage Output B Shift clock Input A reference Inverting Non-Inverting Ground Serial dat input Input B...
  • Page 15: Table Of Contents

    PSR-280/PSR-282 CIRCUIT BOARDS AM Circuit Board (XY426B0) ····················································································· 18 DM Circuit Board (XY036B0) ····················································································· 16 LCD Circuit Board (XY486B0) ··················································································· 15 MK-H Circuit Board (XR565B0) ················································································· 23 MK-L Circuit Board (XR564B0)·················································································· 22 MKS3 Circuit Board (XU878B0)················································································· 22 PN(PNC) Circuit Board (XY361A0) ············································································ 18 PN(PNL) Circuit Board (XY361A0) ············································································...
  • Page 16: Dm Circuit Board (xy036b0)

    PSR-280/PSR-282 DM Circuit Board to HAMMER SENSOR-CN3 Component side from PN(PNR)-CN701 from AM-CN101 from AM-CN601 from LCD-CN701 from PN(VR)-CN501 2NA-V533420...
  • Page 17 PSR-280/PSR-282 DM Circuit Board Pattern side IC101, IC501, IC301, 302 installation detailed drawing Pin 1 mark IC301,302 IC501 IC101 character character direction Pin 1 mark Pin 1 mark 2NA-V533420...
  • Page 18: Am Circuit Board (xy426b0)

    PSR-280/PSR-282 AM Circuit Board PHONES/ MIDI SUSTAIN OUTPUT DC IN to-12V Component side to Speaker-R to Speaker-L from LCD unit PN(PNC) Circuit Board PN(VR) Circuit Board VOICE STYLE SONG MASTER VOLUME Component side from PN(PNL)-CN705 PN(PW) Circuit Board Component side STANDBY/ON Component side 2NA-V534600...
  • Page 19 PSR-280/PSR-282 AM Circuit Board Pattern side PN(PNC) Circuit Board PN(VR) Circuit Board Pattern side PN(PW) Circuit Board Pattern side Pattern side 2NA-V534600 PN(PNC, PW, VR): 2NA-V534590...
  • Page 20: Pn(pnl) Circuit Board (xy361a0)

    PSR-280/PSR-282 PN(PNL) Circuit Board HARMONY TOUCH Overall Yamaha Education Suite Dict. to PN(PNC)-CN706 LESSON SYNC SYNC ACMP STYLE START STOP ON/OFF MAIN/AUTO FILL INTRO/ENDING START/STOP TEMPO/TAP PAUSE A-B REPEAT SONG START/STOP Component side PN(PNR) Circuit Board to DM-CN702 DEMO Overall Portable Grand &...
  • Page 21 PSR-280/PSR-282 PN(PNL) Circuit Board Pattern side PN(PNR) Circuit Board Pattern side PN(PNL, PNR): 2NA-V534590...
  • Page 22: Mk-l Circuit Board (xr564b0)

    PSR-280/PSR-282 MK-L Circuit Board to MK-H Component side MKS3 Circuit Board to MK-H Component side to DM-CN102 MK-L: 2NA-VV58380 MKS3: 2NA-V240490...
  • Page 23: Mk-h Circuit Board (xr565b0)

    PSR-280/PSR-282 MK-H Circuit Board to MKS3-CN4 to MK-L Component side 2NA-VV583900...
  • Page 24: Test Program

    PSR-280/PSR-282 TEST PROGRAM A. PREPARATION 1) PA-3B (AC adaptor) is used. 2) The volume is usually moved to the use position when no volume change is required. 3) Measuring instruments: frequency counter, level meter (with JIS-C filter) Note: Connect a stereo plug to the [PHONES] jack at 33 ohms. 4) Jigs: foot switch, MIDI cable.
  • Page 25 PSR-280/PSR-282 TEST NO. LCD (initial) Test Functions and Judgment Criteria 028: All LCD On Check that all LCD dots are on. The LCD becomes black. Check that all LCD dots are off. The LCD becomes white. 029: All LCD Off 030: I/F Chk 031: Pedal1 Chk Connect the foot switch (FC-4 or FC-5) to the [SUSTAIN] jack.
  • Page 26: Data Initialization

    PSR-280/PSR-282 DATA INITIALIZATION All data can be initialized and restored to the factory preset condition by turning on the CAUTION power while holding the highest (rightmost) white key on the keyboard. • All Registration Memory and User “CLr Backup” will appear briefly on the display. song data, plus the other settings listed above, will be erased and/or changed when the data initialization...
  • Page 27: Midi Implementation Chart

    PSR-280/PSR-282 MIDI IMPLEMENTATION CHART [ Portable Keyboard ] Date:26-JAN-2000 MIDI Implementation Chart Model PSR-280/PSR-282 Version: 1.0 Function... Transmitted Recognized Remarks Basic Default 1 - 16 1 - 16 Channel Changed 1 - 16 1 - 16 Default Mode Messages Altered ************** Note 0 - 127...
  • Page 28 PSR-280/PSR-282 NOTE: *1 By default (factory settings) the PSR-280 ordinarily functions as a 16-channel multi-timbral tone generator, and incoming data does not affect the panel voices or panel settings. However, the MIDI messages listed below do affect the panel voices, auto accompaniment, and songs.
  • Page 29: Effect Map

    PSR-280/PSR-282 Effect map If the received value does not contain an effect type in the TYPE LSB, the LSB will be directed to TYPE 0. The numbers in parentheses in front of the Effect Type names correspond to the number indicated in the display. By using an external sequencer, which is capable of editing and transmitting the system exclusive messages and parameter changes, you can select the Reverb, Chorus and DSP effect types which are not accessible from the PSR-280/PSR-282 panel itself.
  • Page 30: Parts List

    PARTS LIST CONTENTS OVERALL ASSEMBLY······························································································································ 2 KEYBOARD ASSEMBLY ·························································································································· 4 ELECTRICAL PARTS ··························································································································· 5~9 Notes: DESTINATION ABBREVIATIONS Australian model M: South African model British model Chinese model Canadian model South-east Asia model German model Taiwan model European model U.S.A. model French model General export model (110 V) North European model...
  • Page 31 PSR-280/PSR-282 OVERALL ASSEMBLY 10 Upper case assembly (PW) (VR) (PNL) 350 (PNC) 350 (PNR) L100 Keyboard assembly (See page 4) LCD unit 190c 190b 190c 190b 190 Lower case assembly 190a 190d...
  • Page 32 PSR-280/PSR-282 PART NO. DESCRIPTION REMARKS REF NO. RANK OVERALL ASSEMBLY PSR-280/PSR-282 Overall Assembly PSR280 J,U,C,W,O (V524070) Overall Assembly PSR282 U,C (V549940) V5253000 Upper Case Assembly PSR280 J,U,C,W,O V5502600 Upper Case Assembly PSR282 U,C Upper Case PSR280 J,U,X,W,O (V525260) Upper Case PSR282 U,C (V550350) V5201700...
  • Page 33 PSR-280/PSR-282 KEYBOARD ASSEMBLY PART NO. DESCRIPTION REMARKS REF NO. RANK V2386100 KEYBOARD ASSEMBLY 16M C61 MKS3 PSR-280/PSR-282 EP600280 Bind Head Tapping Screw-P 3.0X8 MFZN2Y EP630220 Bind Head Tapping Screw-P 3.0X8 MFZN2BL Frame (VS15380) VU328600 Frame C61 16M VH1809C0 White Key 16L CEGBDEA White Key 16L CEGB...
  • Page 34 PSR-280/PSR-282 ELECTRICAL PARTS PART NO. DESCRIPTION REMARKS REF NO. RANK ELECTRICAL PARTS PSR-280/PSR-282 V5346000 Circuit Board (XY426B0) V5334200 Circuit Board (XY360B0) V5478400 Circuit Board (XY486B0) VV583900 Circuit Board MK-H (VV70120)(XR565B0) VV583800 Circuit Board MK-L (VV70110)(XR564B0) V2404900 Circuit Board MKS3 (XU878B0) V5345900 Circuit Board (XY361A0)
  • Page 35 PSR-280/PSR-282 PART NO. DESCRIPTION REMARKS REF NO. RANK D0901 VL723600 Diode 20E1-FC4 D0902 VL723600 Diode 20E1-FC4 HS001 Heat Sink (V243900) IC800 XQ619A00 LA4705NA POWER AMP 17W IC810 XC520A00 UPC4570C OP AMP IC820 XC520A00 UPC4570C OP AMP IC920 XL450A00 PQ05RA1 REGULATOR +5V IC930 XT625A00 S-81250SGY-Z...
  • Page 36 PSR-280/PSR-282 PART NO. DESCRIPTION REMARKS REF NO. RANK R0839 HF755330 Carbon Resistor 330.0 1/4 J R0840 HF757100 Carbon Resistor 10.0K 1/4 J R0941 HF756470 Carbon Resistor 4.7K 1/4 J R0942 HF757100 Carbon Resistor 10.0K 1/4 J R0943 HF756470 Carbon Resistor 4.7K 1/4 J R0944 HF756560...
  • Page 37 PSR-280/PSR-282 PART NO. DESCRIPTION REMARKS REF NO. RANK CN702 VK025800 Wire Trap 52147 14P TE D0601 VB941200 Diode 1SS133,1SS176 IC101 XU947C00 HG73C205AFD SWX00B IC102 XT333A00 UPC29M33HF REGULATOR +3.3V IC103 XR902A00 IC-PST591D-2 RESET IC201 XY539100 ROM 32M PROGRAM/WAVE IC201 XY539200 IC202 XY541100 M27C800-100F1 MASK 8M PROGRAM...
  • Page 38 PSR-280/PSR-282 PART NO. DESCRIPTION REMARKS REF NO. RANK IC701 XV226A00 KS0066U-10B LCD DRIVER R0723 HF755220 Carbon Resistor 220.0 1/4 J R0724 HF757910 Carbon Resistor 91.0K 1/4 J R0725 HF754680 Carbon Resistor 68.0 1/4 J RA702 V5302400 Resistor Array RGLE5V222J TH701 VR346900 Thermistor ERTD2FGJ801S 800...
  • Page 39 PSR-280/PSR-282 OVERALL CIRCUIT DIAGRAM 1/2 ( DM, AM, PN ( VR, PW ) ) PSR-280/PSR282 EPROM 8M PROGRAM ROM 32M PROGRAM/WAVE REGULATOR +3.3V RESET SRAM 1M SRAM 1M SWX00B to MKS3-CN1 PHOTO COUPLER OP AMP 28CC1-8816889 to LCD-CN1 to PN(PNR)-CN701 PN ( VR ) POWER AMP 17W MASTER...
  • Page 40 PSR-280/PSR-282 OVERALL CIRCUIT DIAGRAM 2/2 ( PN ( PNL, PNR, PNC ) , MK-H, MK-L, MKS3, LCD ) PSR-280/PSR282 PN ( PNR ) PN ( PNL ) HARMONY ON/OFF TOUCH ON/OFF DEMO REVERB to DM-CN702 TRANSPOSE YES2 DITIONARY METRONOME LESSON L LESSON R PORTABLE GRAND...

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