Yamaha P-80 Service Manual
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Yamaha P-80 Service Manual

Yamaha P-80 Service Manual

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SERVICE MANUAL
CONTENTS
SPECIFICATIONS ···································································· 3
CIRCUIT BOARD LAYOUT ······················································ 4
PANEL LAYOUT······································································· 5
BLOCK DIAGRAM ···································································· 6
DISASSEMBLY PROCEDURE················································· 7
LSI PIN DESCRIPTION ·························································· 12
IC BLOCK DIAGRAM ····························································· 13
CIRCUIT BOARDS ································································· 14
TEST PROGRAM ··································································· 16
INITIALIZE ·············································································· 17
MIDI IMPLEMENTATION CHART ·········································· 18
MIDI DATA FORMAT······························································ 19
PARTS LIST
OVERALL CIRCUIT DIAGRAM
PK
001631
HAMAMATSU, JAPAN
19991001-140000
1.84K-686
Printed in Japan '99.09

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  • Page 1 SERVICE MANUAL CONTENTS SPECIFICATIONS ···································································· 3 CIRCUIT BOARD LAYOUT ······················································ 4 PANEL LAYOUT······································································· 5 BLOCK DIAGRAM ···································································· 6 DISASSEMBLY PROCEDURE················································· 7 LSI PIN DESCRIPTION ·························································· 12 IC BLOCK DIAGRAM ····························································· 13 CIRCUIT BOARDS ································································· 14 TEST PROGRAM ··································································· 16 INITIALIZE ·············································································· 17 MIDI IMPLEMENTATION CHART ··········································...
  • Page 2 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

    OUT PUT: L and R Pin Jacks, L/L+R and R Phone Jacks (Output JACKS/CONNECTORS impedance 600 Ω), MIDI IN/OUT, HOST SELECT, TO HOST, PHONES x 2, SUSTAIN, DC IN 12 V POWER SUPPLY Yamaha PA-3B power adaptor Rated Voltage DC12 V Rated Current 700 mA DIMENTIONS (W x D x H) 1347 x 285 x 128 mm (53"...

  • Page 4: Circuit Board Layout

    P-80 CIRCUIT BOARD LAYOUT Location Connector Assembly Destination Parts No. KRD-KRD DM-CN3 KEYBOARD VK12430 DM-CN4 PNL-CN1 V444240 PNL-CN2 M-CN1 V444250 PNL-CN201 DM-CN2 V444260 PNR-CN301 PNL-CN201 DM-CN1 PNL-CN202 V444270 PNL-CN202 PNR-CN302 M-CN3 DM-CN5 V444280 Ribbon M-CN2 SW-CN3 V444290 Ribbon DM-CN6 JACK-CN1 V444300 Connector assembly listed above are not available as service parts.

  • Page 5: Panel Layout

    P-80 PANEL LAYOUT Control panel GRAND CLASSICAL JAZZ ROCK E. PIANO E. PIANO MASTER VOLUME PIANO PIANO PIANO PIANO ROOM CHORUS HALL 1 SYMPHONIC HARD HALL 2 TREMOLO MEDIUM START/ TEMPO/ START/ HARPSI- PIPE CHURCH JAZZ BRILLIANCE STAGE DELAY SOFT...

  • Page 6: Block Diagram

    P-80 BLOCK DIAGRAM MCLK 8.4672MHz 4MHz RES. LSIIC KSN2 IC11 MUTE IC14 SRAS A23(CS0) A23(CS0) SCAS A22(CS1) A22(CS1) KEYBOARD A21(CS2) A21(CS2) DRAM WAVE DATA BUS,ADDRESS BUS CMA(1-8),CMD(0-15) DATA BUS,ADDRESS BUS DATA BUS,ADDRESS BUS 16bit SMA(0-20),SMD(0-15) SMA(1-20),SMD(0-15) 1MHz MIDI BACKUP Conversion...

  • Page 7: Disassembly Procedure

    P-80 DISASSEMBLY PROCEDURE Upper Case Assembly Remove the twelve (12) screws marked [60A] located on the bottom board. (Fig.1) Lift the keyboard assembly from the front and take it out of the upper case assembly. (Fig.2) Bottom side [60A] [60A]...

  • Page 8: Sw Circuit Board

    P-80 SW Circuit Board Remove the upper case assembly. (See Procedure 1.) Remove the M circuit board. (See Procedure 2.) Remove the two (2) screws marked [250B]. The SW circuit board can then be removed. (Fig.4) [250B] [250]: Bind Head Tapping Screw-B 3.0X6 MFZN2Y (EP600130) (Fig.

  • Page 9: Pnr Circuit Board

    P-80 PNR Circuit Board Remove the upper case assembly. (See Procedure 1.) Remove the two (2) screws marked [250G] and the screw marked [260B]. The angle bracket can then be removed. (Fig.6) Remove the nine (9) screws marked [250H]. The PNR circuit board can then be removed.

  • Page 10: Disassembling The Keyboard

    P-80 Disassembling the Keyboard After inserting a round stick (Rod:TX000670) between the frame and the keys, remove the circuit boards. (Fig.10) Remove the keyboard assembly out of the bottom board. (See Procedure 8.) GH-D SW (L) Circuit Board Remove the seven (7) screws marked [260C]. The GH-D SW (L) circuit board can then be removed.

  • Page 11: Assembling The Keyboard

    P-80 Hammer, white key Stopper (L88) (Fig. 15) Assembling the keyboard 10-1 Place the keyboard assembly upside-down, insert a hammer assembly into the frame, and put the stopper (L88) on. (Fig.16) There are four (4) kinds of hammers that differ in weight.

  • Page 12: Lsi Pin Description

    P-80 LSI PIN DESCRIPTION HG73C205AFD (XU947C00) SWX00B TONE GENERATOR DM: IC7, 8 NAME FUNCTION NAME FUNCTION Initial clear CMA3 Program address bus RFCLKI PLL Clock CMA8 Program address bus PLL Control CMA2 Program address bus Power supply read signal AVDD_PLL...

  • Page 13: Ic Block Diagram

    P-80 IC BLOCK DIAGRAM PCM69AU TE2 (XU970A00) DAC (Digital Analog Converter) DM: IC10 TC74HC00AF (XD655A00) TC74HC138AF (XM970A00) SN75C1168NSR (XU073A00) NAME FUNCTION NAME FUNCTION Quad 2 Input NAND 3 to 8 Demultiplexer Line Driver/Receiver DM: IC002 DM: IC006 JACK: IC002 +VCC...

  • Page 14: Circuit Boards

    P-80 CIRCUIT BOARDS DM Circuit Board JACK Circuit Board SUSTAIN MIDI HOST SELECT TO HOST to JACK-CN1 from DM-CN6 Component side from M-CN3 from PNL-CN201 to PNL-CN202 to KEYBOARD to PNL-CN1 PNR-CN301 PNR-CN302 Component side Pattern side Note: See parts list for details of circuit board component parts.
  • Page 15 P-80 PNL Circuit Board SW Circuit Board to M-CN1 from DM-CN4 to DM-CN2 from DM-CN1 STANDBY/ON MASTER VILUME START/ TEMPO/ BRILLIANCE DEMO FUNCTION – / NO + / YES PRESET STOP FUNCTION# from M-CN2 METRONOME TEMPO / OTHER VALUE Component side...

  • Page 16: Test Program

    P-80 TEST PROGRAM 1. Preparation 7-seg. LED for Each Test Test Functions and Judgment Criteria To check the unit using the test program, the following measuring instruments and jigs are required: Connect the frequency counter to the PHONES jacks. AC Adapter (PA-3B) Check the frequency (440 Hz +/- 0.22 Hz).
  • Page 17 P-80 INITIALIZE All dual mode, split mode, reverb, effect, touch sensitivity, STANDBY / tuning settings, and the settings affected by the Backup Functions can be restored to their original factory preset values by holding the C7 key (rightmost key on the keyboard) while turning the [STANDBY/ON] switch ON.
  • Page 18 P-80 YAMAHA [Electronic Piano] Date: 7/31, 1999 Model: P-80 MIDI Implementation Chart Version: 1.1 Function... Transmitted Recognized Remarks Basic Default Channel Changed 1 - 16 1 - 16 Default Poly Mode only Mode Messages Altered ****************** Note 9 - 120...

  • Page 19: Midi Data Format

    Data Range (vvH) messages, the data provided in this section can help you to control All Sound Off the P-80. Switches off all sound from the channel. Does not reset Note On and Hold On conditions established by Channel Messages.

  • Page 20: Program Change

    (n: channel number) 00H, 2CH (data length) 43H, 4CH, 20H, 20H (CL) 43H, 4CH, 50H, 27H, 39H, 38H (P-80) 30H, 30H (version x, y) [PANEL DATA] [CHECK SUM (1byte)] = 0-(43H+4CH+20H+..+Data end) • Panel data send requests cannot be received.
  • Page 21 = Exclusive status = Yamaha ID = Master Tune MSB = Clavinova ID = Master Tune LSB = Product ID (P-80 ID: 66H or CLP common ID: 01H) = don’t care (under 7FH) = Substatus = End of Exclusive Control Internal MIDI clock •...
  • Page 22 P-80 < Table 1> MIDI Parameter Change table ( SYSTEM ) Address (H) Size (H) Data (H) Parameter Description Default value (H) 00 00 00 020C - 05F4(*1) MASTER TUNE -50 - +50[cent] 00 04 00 00 1st bit 3 - 0 Æ bit 15 - 12 2nd bit 3 - 0 Æ...

  • Page 23: Table Of Contents

    PARTS LIST CONTENTS OVERALL ASSEMBLY······························································································································ 2 UPPER CASE ASSEMBLY ······················································································································· 4 KEYBOARD ASSEMBLY ·························································································································· 6 SUSTAIN PEDAL ······································································································································ 8 ELECTRICAL PARTS ························································································································· 9~14 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...

  • Page 24: Overall Assembly

    P-80 OVERALL ASSEMBLY Music Rest Upper case assembly: See page 4. Keyboard assembly: See page 6. B100 B120 B110 Bottom board assembly...
  • Page 25 P-80 PART NO. DESCRIPTION REMARKS REF NO. RANK OVERALL ASSEMBLY P-80 (V440570) Upper Case Assembly (V440770) V4407800 Bottom Board Assembly VZ705400 Keyboard Assembly GHD A88 K6 V4439900 Pan Head Screw PW 5.0X16MFZN2BL EG340340 Bind Head Screw 4.0X6 MFZN2BL Connector Assembly...

  • Page 26: Upper Case Assembly

    P-80 UPPER CASE ASSEMBLY Side cover assembly L Side cover assembly R...
  • Page 27 P-80 PART NO. DESCRIPTION REMARKS REF NO. RANK UPPER CASE ASSEMBLY P-80 (V440770) V4549500 Top Board Assembly Side Cover Assembly LEFT (V440620) Side Cover Assembly RIGHT (V440630) V4408300 End Block LEFT V4409900 Panel V4409200 Knob REVERB,EFFECT,TOUCH, TRANSPOSE,VARIATION,SPLIT V4409300 Knob VOICE(GRAND PIANO-BASS)

  • Page 28: Keyboard Assembly

    P-80 KEYBOARD ASSEMBLY...
  • Page 29 P-80 PART NO. DESCRIPTION REMARKS REF NO. RANK KEYBOARD ASSEMBLY GHD A88 K6 P-80 VZ705400 MK Frame (VU42210) VU101000 White Key C WH VU101100 White Key D WH VU101200 White Key E WH VU101300 White Key F WH VU101400 White Key...

  • Page 30: Sustain Pedal

    P-80 SUSTAIN PEDAL Pedal assembly PART NO. DESCRIPTION REMARKS REF NO. RANK SUSTAIN PEDAL P-80 (VT37300) Tube M4.1 AWG#6 (CH00217) Tube M5.2 AWG#4 (CH00219) EC030070 Flat Head Screw 3.0X8 MFZN2Y EE630060 Pan Head Screw 3.0X12 MFZN2Y CB806740 Pedal Box CB806750...

  • Page 31: Electrical Parts

    P-80 ELECTRICAL PARTS PART NO. DESCRIPTION REMARKS REF NO. RANK ELECTRICAL PARTS P-80 V4459500 Circuit Board (XW197B0) VZ705200 Circuit Board GH-D SW (L) (XT240A0) VZ705300 Circuit Board GH-D SW (H) (XT241A0) V4462400 Circuit Board JACK (XW563B0) V4459700 Circuit Board (XW199B0)
  • Page 32 P-80 PART NO. DESCRIPTION REMARKS REF NO. RANK UR828470 Electrolytic Cap. 470.00 10.0V UF038100 Electrolytic Cap. (chip) 100 16V UF037220 Electrolytic Cap. (chip) 22 16V UF037220 Electrolytic Cap. (chip) 22 16V US064100 Ceramic Capacitor-B (chip) 0.01 50V K US064100 Ceramic Capacitor-B (chip) 0.01 50V K...
  • Page 33 P-80 PART NO. DESCRIPTION REMARKS REF NO. RANK RD355100 Carbon Resistor (chip) 100 63M J RD354470 Carbon Resistor (chip) 47 63M J RD355100 Carbon Resistor (chip) 100 63M J RD354470 Carbon Resistor (chip) 47 63M J RD354470 Carbon Resistor (chip)
  • Page 34 P-80 PART NO. DESCRIPTION REMARKS REF NO. RANK -108 VB941200 Diode 1SS133,1SS176 VB390500 Connector Base Post PH- 9P TE VB390800 Connector Base Post PH-12P TE V4462400 Circuit Board JACK (XW563B0) VB659000 Bind Head Screw 3.0X8 MFZN2BL EP600140 Bind Head Tapping Screw-B 3.0X10 MFZN2BL...
  • Page 35 P-80 PART NO. DESCRIPTION REMARKS REF NO. RANK Angle Bracket, Jack (V442040) Jack Cover (V468690) VD041700 Jumper Wire 0.55 FG644100 Ceramic Capacitor-F 0.01 50V Z FG644100 Ceramic Capacitor-F 0.01 50V Z FG652100 Ceramic Capacitor-SL 100P 50V J UR838100 Electrolytic Cap.
  • Page 36 P-80 PART NO. DESCRIPTION REMARKS REF NO. RANK CN202 VC166500 Connector Base Post PH-12P SE CN301 VB858800 Connector Base Post PH- 9P SE CN302 VC166500 Connector Base Post PH-12P SE D102 VD631600 Diode 1SS133,176,HSS104 -106 VD631600 Diode 1SS133,176,HSS104 D202 VD631600...
  • Page 37 P-80 OVERALL CIRCUIT DIAGRAM 1/2 (DM, JACK ) P-80 to GHD SW L - CN1 to G-6 EPRPM 8M MAIN SRAM 1M REGULATOR +3.3V REGULATOR +5V 0.5A to A-3 from to M - CN3 to F-7 from E-6 to E-10...
  • Page 38 P-80 P-80 OVERALL CIRCUIT DIAGRAM 2/2 ( PNL, PNR, M, SW, GHD SW H, GHD SW L ) to DM - CN2 to DM - CN1 MASTER VOLUME BRILLIANCE to DM - CN4 STANDBY / ON reset METRONOME START/ TEMPO/...

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