SERVICE MANUAL This document is printed on chlorine free (ECF) paper.
PSR-A1000 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.
PSR-A1000 : available Song Format Preset Songs Lyrics Recording SMF (Format 0,1), ESEQ Record Channels Multi Pad Memory Device Tempo Scale Registration Memory Others Preset Floppy Disk (2HD,2DD) Flash Memory (internal) Flash Availability Tempo Range Tap Tempo Metronome Sound Scale Tuning Scale Memory buttons Scale Template Buttons Regist Sequence Freeze Demo Language Help Direct Access Master Volume Fade In/Out Transpose Tuning Touch Response Jacks/Connectors Pedal Functions Amplifiers/ Amplifiers
PSR-A1000 PANEL LAYOUT A 51 5 6 7 8 9 10 11 12 71 72 73 7 4 13 32 38 33 14 34 35 36 15 40 37 18 16 17 39 41 19 20 21 22 23 24 25 26 27 28 29 30 42 31 1 2 3 A' STYLE 27 [AUTO FILL IN] button 14 STYLE buttons 28 [FADE IN / OUT] button SCALE SETTING 29 [SYNC.STOP] button 15 [SCALE SETTING] buttons 30 [SYNC.
PSR-A1000 A 73 74 75 76 43 77 78 44 52 53 54 55 56 57 58 45 59 46 38 70 47 60 64 50 61 66 63 49 62 48 65 42 67 68 69 A' 42 [1 ] - [8 ] buttons VOICE FLOPPY DISK 43 [BACK] button 59 VOICE buttons 70 Floppy disk drive (3.
PSR-A1000 CIRCUIT BOARD LAYOUT & WIRING Lower case assembly L160 L110 L170 Speaker R (Woofer) U380 INV U390 370 Upper case assembly 180 Speaker L (Woofer) AM 170 WH003 WH008 WH007 U420 DM WH002 150 S4 SW 150 160 WH007 HP S7 Keyboard assembly Speaker R (Tweeter) S5 WH005 WH006 S5 MK-H U380 U390 U420 LCD U400 PN2 PN1 MKS5F S6 MK-L PN4 U410 160 Speaker L (Tweeter) WH005 PN3 WH010 WH009 WH001 ENC 6 VR PB1
PSR-A1000 Location Part No.
PSR-A1000 DISASSEMBLY PROCEDURE Caution: Be sure to attach the removed filament tape just as it was before removal. 1. 1-1 Lower Case Assembly [240] 2. HP Circuit Board 2-1 2-2 (Time required: About 10 minutes) Remove the lower case assembly. (See procedure 1.) Remove the three (3) screws marked [270A]. The HP circuit board can then be removed. (Fig. 2) 3.
PSR-A1000 4. SW Circuit Board 7. 4-3 (Time required: About 10 minutes) Remove the lower case assembly. (See procedure 1.) Remove the two (2) screws marked [340]. The SW circuit board can then be removed. (Fig. 2) Remove the red knob from the SW circuit board. 5. INV Circuit Board 4-1 4-2 7-1 7-2 7-3 7-4 (Time required: About 10 minutes) ATTENTION: High Voltage 5-1 Remove the lower case assembly. (See procedure 1.) 5-2 Remove the four (4) screws marked [260A].
PSR-A1000 12. VR, ENC, PN1, PN2, PN3, PN4 Circuit Boards and LCD 12-7 12-1 12-2 12-3 Remove the lower case assembly. (See procedure 1.) Remove the INV circuit board. (See procedure 5.) Remove the shield cover L, the DM circuit board and the shield cover U. (See procedure 6.) Remove the AM circuit board. (See procedure 7.) 12-7-1 12-7-2 12-4 12-7-3 12-7-4 VR Circuit Board (Time required: About 20 minutes) : 12-5-1 Remove the volume knob from the control panel side. (Fig.
PSR-A1000 12-10 PN4 Circuit board (Time required: About 20 minutes) : 12-10-1 Remove the five (5) screws marked [520I]. The PN4 circuit board can then be removed. (Fig. 7) [510] LCD holder 12-11 LCD (Time required: About 20 minutes) : 12-11-1 Remove the four (4) screws marked [520J]. The LCD can then be removed with the LCD holder. (Fig. 7) 12-11-2 Remove the four (4) screws marked [510]. The LCD holder can then be removed from the LCD. (Fig. 10) LCD [510] 13.
PSR-A1000 LSI PIN DESCRIPTION HD63266F (XI939A00) FDC ··············································································································· µPD789022GB-A15-8E (XZ560100) CPU KBS ················································································· HD6417709F80B (XV250B00) CPU ··································································································· HG73C205AFD (XU947C00) SWX00B ··································································
PSR-A1000 HD6417709F80B (XV250B00) CPU PIN NAME NO.
PSR-A1000 HG73C205AFD (XU947C00) SWX00B (Tone Generator) PIN NO.
PSR-A1000 S1D13305F00B100 (XQ595A00) LCDC (LCD Controller) PIN NO.
PSR-A1000 IC BLOCK DIAGRAM SN74HCU04NSR (XW842A00) SN74HCU04N (IG142250) Hex Inverter HD74LV08AFPEL (IS000800) Quad 2 Input AND HD74LV21ATELL (X0010A00) Dual 4 Input AND DM: IC101 DM: IC310 DM: IC510, 511 AM: IC301 1A 1 1Y 2 2A 3 14 13 12 VDD 6A 1 14 VDD 1A 1 14 Vcc 1B 2 13 4B 1B 2 13 2D 1Y 3 12 4A NC 3 12 2C 2A 4 11 4Y 1C 4 11 NC 2B 5 10 3B 1D 5 10 2B 2Y 6 9 3A 1Y 6 9 2A VSS 7 8 3Y GND 7 8 2Y 6Y 2Y 4 11 5A 3A 5 10 5Y 3Y 6 9 Vs
PSR-A1000 M5227P (XF751A00) 5-Band Graphic Equalizer µPC4570HA (XB247A00) Dual Operational Amplifier µPC4570G2 (XF291A00) Dual Operational Amplifier AM: IC104, 105 AM: IC100, 102, 107, 108, 111, 112 DM: 702, 703 16 +NF1 2 -Vcc 15 540 1 14 4 IN3 5 NF3 6 540 540 - GND +Vcc +- NF2 47k 3 Output A B A 10k 10k IN2 + 47k 1 + IN1 13 OUT 12 -IN 11 +IN 10 NF5 9 IN5 +V 2 3 4 5 6 7 8 9 -IN -V -IN +V OUT +IN +IN OUT A A A B B B Inverting Input A Non-Inverting Inpu
PSR-A1000 CIRCUIT BOARDS DM Circuit Board to PN1-CN2 to PN1-CN1 to FDD to FDD power to MKS5F-CN1 to INV-CN1 to AM-CN106 to AM-CN303 to LCD to AM-CN300 to AM-CN103 Component side 2NA-V763770-1 18 2
PSR-A1000 DM Circuit Board Pattern side 2NA-V763770-2 2 19
PSR-A1000 PN1 Circuit Board A MEMORY 8 7 6 5 4 3 2 REGISTRATION MEMORY PN2 Circuit Board 4 3 2 MULTI PAD DIRECT ACCESS STOP CHANNEL ON/OFF BALANCE 1 (DOWN) 1 (UP) 2 (DOWN) 2 (UP) 3 (DOWN) 3 (UP) 4 (DOWN) 4 (UP) 5 (DOWN) TAP TEMPO TEMPO + TEMPO - USER PERCUSSION SYNTH. CHOIR & PAD STRI TRAMPET GUITAR ORGA ACCOR 5 (UP) 6 (DOWN) VOICE 6 (UP) VOICE EFFECT 7 (DOWN) 7 (UP) 8 (DOWN) 8 (UP) VARIATION DSP MONO HARMONY/EC.
PSR-A1000 ENC Circuit Board A to PN1-CN4 2 1 FREEZE DATA ENTRY 1 ENTER Component side UPPER OCTAVE + UPPER OCTAVE - TRANSPOSE + TRANSPOSE - SCALE TUNING LCD select J LCD select I XG LEFT LCD select H STRINGS LCD select G LAYER SAX & FLUTE LCD select F MAIN ORGAN & ACCORDION PIANO FECT C.
PSR-A1000 ENC Circuit Board PN1 Circuit Board B to PN2-CN7 Pattern side to ENC-CN13 to DM-CN600 to PN3-CN8 to DM-CN100 B' PN1, ENC: 2NA-V922220 22
PSR-A1000 B PN2 Circuit Board B' PN1, PN2: 2NA-V922220 Pattern side Pattern side 23
PSR-A1000 PN4 Circuit Board EXTRA TRACKS TRACK 2 TRACK 1 METRONOME REPEAT C REC TOP START/STOP SONG RW FF P Component side PN3 Circuit Board STYLE CONTROL MAIN ACMP BREAK INTRO A B C D C' PB1 Circuit Board PITCH BEND to PN3-CN10 Component side PN3, PN4, PB1: 2NA-V922230 24
PSR-A1000 SOUND CREATOR LCD select A C DIGITAL RECORDING POP & ROCK LATIN & JAZZ MIXING CONSOLE DANCE & BALLROOM LCD select B LCD select C LCD select D USER LCD select E STYLE SCALE SETTING DEMO HELP FUNCTION SCALE MEMORY MEMORIZE 1 ENDING/rit. 2 SYNC. STOP AUTO FILL IN FADE IN/OUT 3 SYNC.
PSR-A1000 PN3 Circuit Board to PN1-CN3 D D' 2NA-V922230 26
PSR-A1000 PN4 Circuit Board D Pattern side to PB1-CN16 Pattern side D' PB1 Circuit Board PN3, PN4, PB1: 2NA-V922230 Pattern side 27
PSR-A1000 AM Circuit Board LCD CONTRAST HOST SELECT TO HOST Component side Mac PC1 PC2 E MIDI MIDI IN to DM-CN501 to DM-CN908 to DM-CN109 (S OUT to DM-CN105 E' VR Circuit Board MASTER VOLUME Component side AM, VR: 2NA-V756840 28 5
PSR-A1000 FOOT PEDAL E E' 1 (SWITCH) AUX OUT (LEVEL FIXED) R L 2 to Speakers (Woofer) * to Speakers (Tweeter) : not installed OU F R F' INV Circuit Board to LCD (Backlight) AM: 2NA-V756840 INV: 2NA-V420050 5 to DM-CN104 Component side 29
PSR-A1000 OUT PUT F R L/L+R DC-IN 16V SW Circuit Board STANDBY/ON Component side HP Circuit Board PHONES F' Component side Component side AM, HP, SW: 2NA-V756840 30 5
PSR-A1000 MK-L Circuit Board G to MK-H G' G H G' H' H Component side H' MKS5F Circuit Board to MK-H to DM-CN102 Component side MK-L: 2NA-VV58380 MKS5F: 2NAKZ-V814260 31
PSR-A1000 MK-H Circuit Board I to MKS5F-CN4 I' I to MK-L I' J J' J J' Component side 2NA-VV583900 32
PSR-A1000 TEST PROGRAM 1. Preparation 1) PA-300 (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 (FC-4), foot volume (FC-7), MIDI cable, floppy disk (2HD & 2DD) 2. How to enter the Test Program While pressing the [C#2], [F2] and [G#2] keys, turn the [STANDBY/ON] switch on. 3.
PSR-A1000 No. 17 18 19 20 22 23 24 25 26 28 29 31 36 37 38 40 41 43 44 45 46 47 55 56 LCD (initial) Test Function and Judgment criteria 017: Output L Check Connect the level meter (with a JIS-C filter) to each terminal (PHONES, OUTPUT L/L+R, R, AUX OUT L, R). Set the [MASTER VOLUME] at MAX and check the L channel output level. (1 kHz sine wave, PAN=L) (PHONES L, R: 33 ohm load OUTPUT L/L+R, R: 10 kohm load AUX OUT L, R: 10 kohm load) PHONES L: +3.5 dBm +/- 2 dB PHONES R: less than -30.
PSR-A1000 • Power On Reset Set to the factory preset data when the [STANDBY/ON] switch is turned on while pressing the highest (rightmost) white key on the keyboard.
PSR-A1000 SYSTEM RESET This operation lets you restore the PSR-A1000 to its original factory settings. These settings include System Setup, MIDI Setup, User Effect, and Files & Folders. Restores the System Setup parameters to the original factory settings. You can also restore only the System Setup settings by simultaneously holding down the highest key on the keyboard (C6) and turning on the power. Restores the MIDI templates to the original factory settings.
PSR-A1000 MIDI IMPLEMENTATION CHART YAMAHA [ Portable Keyboard ] Model PSR-A1000 MIDI Implementation Chart Function...
PSR–A1000 MIDI DATA FORMAT Many MIDI messages listed in the MIDI Data Format are expressed in decimal numbers, binary numbers and hexadecimal numbers. Hexadecimal numbers may include the letter “H” as a suffix. Also, “n” can freely be defined as any whole number. To enter data/values, refer to the table below.
PSR–A1000 MIDI CHANNEL MESSAGE (1) MIDI Events Status byte Status Key Off Key On Control Change Mode Message Program Change Channel After Touch Polyphonic After Touch Pitch Bend Change Realtime Message *1 *2 *3 *4 O: available 1st Data byte Data (HEX) Corresponding Voice 2nd Data byte Parameter MIDI Reception (respond/ignore) MIDI Transmission (generated data) Regular Voice Song O O O O O X X X X O X O O O O O O O (Keyboard) O O O O X 0 64 126 127 0–127 Velocity (0~
PSR–A1000 MIDI CHANNEL MESSAGE (2) NRPN NRPN Data Entry Corresponding Voice MIDI Reception (respond/ignore) MIDI Transmission (generated data) Regular Voice Song mm: 00H-40H-7FH (-64...0...+63) O O Main Layer Left O X O O mm: 00H-40H-7FH (-64...0...+63) O O O X O O Vibrato Delay mm: 00H-40H-7FH (-64...0...
PSR–A1000 MIDI PARAMETER CHANGE TABLE * Not Received when Receive System Exclusive Message Parameters is set to off. * Not transmitted when Transmit System Exclusive Message Parmeters is set to on. MIDI Parameter Change table (XG SYSTEM) Corresponding Voice MIDI Reception (effective or not for each part) Address (H) 0 0 Size (H) 0 4 1 2 3 Data (H) Parameter Description XG Default (H) Regular Voice Song Main Layer Left Keyboard Style Extra 00-0F MASTER TUNE -102.4...0...+102.
PSR–A1000 Corresponding Voice MIDI Reception (effective or not for each part) Address (H) 2 Size (H) Parameter Refer to Effect Parameter List ˝ ˝ 00-7F CHORUS TYPE MSB 22 1 00-7F CHORUS TYPE LSB 00-7F CHORUS PARAMETER 1 23 1 00-7F CHORUS PARAMETER 2 ˝ 24 1 00-7F CHORUS PARAMETER 3 ˝ 25 1 00-7F CHORUS PARAMETER 4 ˝ 26 1 00-7F CHORUS PARAMETER 5 ˝ 27 1 00-7F CHORUS PARAMETER 6 ˝ 28 1 00-7F CHORUS PARAMETER 7 ˝ 29 1 00-7F CHORUS PARAMETER 8 ˝ 2A 1 00-7F CHORUS PARAMETER 9
PSR–A1000 Corresponding Voice MIDI Reception (effective or not for each part) Address (H) 2 Size (H) 1 70 1 71 1 72 1 73 1 74 1 75 1 TOTAL SIZE Data (H) Parameter 00-7F VARIATION PARAMETER 11 00-7F VARIATION PARAMETER 12 00-7F VARIATION PARAMETER 13 00-7F VARIATION PARAMETER 14 00-7F VARIATION PARAMETER 15 00-7F VARIATION PARAMETER 16 06 XG Default (H) Description Refer to Effect Parameter List ˝ ˝ ˝ ˝ ˝ Depends on Variation Type Depends on Variation Type Depends on Variation Type Depe
PSR–A1000 Corresponding Voice MIDI Reception (effective or not for each part) Address (H) Size (H) Data (H) XG Default (H) OFF, ON OFF, ON 1 1 X X X X OFF, ON OFF, ON OFF, ON 1 1 1 X X X X X X 1 1 1 00-01 Rcv PITCH BEND 00-01 Rcv CH AFTER TOUCH (CAT) 00-01 Rcv PROGRAM CHANGE 00-01 Rcv CONTROL CHANGE 00-01 Rcv POLY AFTER TOUCH (PAT) 00-01 Rcv NOTE MESSAGE 00-01 Rcv RPN 00-01 Rcv NRPN Main Layer Left X X OFF, ON OFF, ON OFF, ON O X X 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4
PSR–A1000 Corresponding Voice MIDI Reception (effective or not for each part) Address (H) Size (H) 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F TOTAL SIZE 1 1 1 1 1 1 1 1 1 1 1 1 Data (H) Parameter XG Default (H) Description NOT USED NOT USED 04-28 EQ BASS FREQUENCY 32...2.0k[Hz] 1C-3A EQ TREBLE FREQUENCY 500...16.
PSR–A1000 SYSTEM EXCLUSIVE MESSAGES * Not received when the Receive System Exclusive Message is set to off. * Not transmitted when the Transmit System Exclusive Message is set to on. System Exclusive Messages Corresponding Voice MIDI Reception (effective or not for each part) MIDI Event Data Format Regular Voice Section Control Tempo Control Chord Control F0 43 7E 00 ss dd F7 11110000 F0= Exclusive status 01000011 43= YAMAHA ID 01111110 7E= Style 00000000 00= 0sssssss ss= Switch No.
PSR–A1000 System Exclusive Messages (Universal Realtime messages) Corresponding Voice MIDI Reception (effective or not for each part) MIDI Event Data Format Regular Voice Master Volume F0 7F 7F 04 11110000 01111111 01111111 00000100 00000001 0lllllll 0mmmmmmm 11110111 or F0 7F XN 04 11110000 01111111 0xxxnnnn 00000100 00000001 0lllllll 0mmmmmmm 11110111 01 ll mm F7 F0= Exclusive status 7F= Universal Real Time 7F= ID of target device 04= Sub-ID #1=Device Control Message 01= Sub-ID #2=Master Volume ll= V
PSR–A1000 System Exclusive Messages (Others) Corresponding Voice MIDI Reception (effective or not for each part) MIDI Event MIDI Master Tuning 48 Data Format F0 43 1n 27 30 00 00 mm ll cc F7 11110000 F0= Exclusive status 01000011 43= YAMAHA ID 0001nnnn 1nn= always 0 (when transmit), n=0-F (when receive) 00100111 27= Model ID of TG100 00110000 30= Address High 00000000 00= Address Mid 00000000 00= Address Low 0000mmmm 0m= Master Tune MSB 0000llll 0l= Master Tune LSB 0ccccccc cc= don't care 11110111 F7=
PARTS LIST CONTENTS OVERALL ASSEMBLY ··························································································································· 2 LOWER CASE ASSEMBLY ···················································································································· 4 UPPER CASE ASSEMBLY ···················································································································· 6 KEYBOARD ASSEMBLY ·····················································
PSR-A1000 OVERALL ASSEMBLY • A1 AC Adapter (PA-300E) 210 280 220 A1a 190 200 40 120 110 130 160 270 340 270 270 100 260 10 Upper case assembly (See page 6.) 330 160 270 40 260 370 20 Keyboard assembly (See page 9.) 270 80 60 250 330 150 170 270 140 260 380 270 90 250 260 260 270 270 70 260 180 320 260 240 30 Lower case assembly (See page 4.
PSR-A1000 REF NO. 10 20 30 40 60 70 80 90 100 110 120 130 * 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 320 330 340 370 380 A1 A1a A1 A1a * PART NO.
PSR-A1000 LOWER CASE ASSEMBLY 90 100 110 60 Lower case sub assembly 90 110 100 60 10 L90 L50 L100 L100 L90 L60 L70 L40 L80 L30 L80 L70 L100 L110 L40 50 L10 180 F60 170 L120 F50 L20 160 L30 50 70 F40 F60 F20 130 F50 F10 30 F30 F70 F40 40 20 Floppy disk drive assembly 4 80
PSR-A1000 REF NO. * * 10 20 30 40 50 60 70 80 90 100 110 130 160 170 180 PART NO.
PSR-A1000 UPPER CASE ASSEMBLY Speaker grille L assembly U20 U30 300 U80 U50 U70 U30a U30c 420 420a U90 540 U30d U30b U30c 430 U30d 510 U30c U10 440 Speaker grille R assembly U40 U60 20 U70 150 310b U80 U40d 30 520 U40c U40c U40b 50 230 310a U40c U40a U40d 120 310 500 40 520 U90 370 240 70 Wheel assembly 160 220 10 140 200 Upper case sub-assembly 170 210 60 80 260 250 130 250 90 180 190 270 280 Contents of used LED lenz list 250 Parts number Shape expansio
PSR-A1000 10 20 30 40 50 60 70 80 90 120 PART NO. -V9132400 --------V7656700 130 V7656900 Panel Button Black x20 140 V7657100 Panel Button Black x11 150 * 160 * 170 V7657300 Panel Button Gold V8882400 Panel Button Gold V8882500 Panel Button Black x10 x8 x13 180 V7479500 Panel Button Black x15 * 190 V8882600 Panel Button Gold x27 * 200 * 210 * 220 230 240 250 V8568600 V8568800 V8568900 V7479900 V7480000 V7480100 REF NO.
PSR-A1000 520 530 540 560 570 580 PART NO.
PSR-A1000 KEYBOARD ASSEMBLY 90 140 60 60b 60a 120 80 120 110 120 50 S4 120 S1 130 S3 S5 30 30 50 50 60 60a 60b 80 90 100 110 120 130 140 140 150 160 PART NO.
PSR-A1000 ELECTRICAL PARTS REF NO. * * * * * * * PART NO.
PSR-A1000 PART NO.
PSR-A1000 PART NO.
PSR-A1000 PART NO.
PSR-A1000 REF NO. R0196 R0197 R0198 R0199 R0200 -0203 R0204 R0205 R0206 R0207 R0208 R0209 R0210 R0211 R0212 R0300 -0303 R0304 R0305 R0306 R0307 R0308 R0309 R0310 R0311 R0312 R0313 R0314 R0315 R0316 R0317 R0318 R0319 -0322 R0323 R0324 R0325 R0400 R0401 R0402 R0403 R0404 R0405 R0406 R0407 R0408 SW100 SW300 TH100 TR100 TR101 TR102 TR103 -106 TR300 TR301 TR400 TR401 VR100 VR300 WH002 WH003 WH005 WH006 WH007 WH008 ZD001 * PART NO.
PSR-A1000 PART NO.
PSR-A1000 PART NO.
PSR-A1000 PART NO.
PSR-A1000 PART NO.
PSR-A1000 PART NO.
PSR-A1000 REF NO. R0729 R0803 R0804 R0805 R0806 R0808 R0809 R0810 R0812 R0813 R0817 -0840 R0841 R0900 R0901 R0902 R0903 R0904 R0905 R0913 R0914 R1000 R1003 R1004 R1114 R1115 R1116 TR100 TR503 -508 TR600 TR601 TR602 TR702 X0101 X0300 X0800 * * * PART NO.
PSR-A1000 PART NO.
PSR-A1000 SW106 SW107 SW108 SW109 SW110 SW111 SW112 SW113 SW114 SW115 SW116 SW117 SW118 SW119 SW120 WH001 WH009 PART NO.
PSR-A1000 PART NO.
PSR-A1000 REF NO. SW026 SW027 SW028 SW029 SW030 SW031 SW032 SW033 SW034 SW035 SW036 SW037 SW038 SW039 SW040 SW041 SW042 SW043 SW044 SW045 SW046 SW047 SW048 SW049 SW050 SW051 SW121 SW122 SW123 SW124 SW125 SW126 SW127 SW128 SW129 SW130 SW131 SW132 SW133 SW134 SW135 SW136 SW137 VR003 WH010 PART NO.
A B C D E F G H J I K L PSR-A1000 BLOCK DIAGRAM PSR-A1000 1 1 PITCH BEND CN10 (PN3) INV CN1 (PN1) LSEG[0..11] CN100 MIDI IN 1 MIDI I/F JK300 /LP-IRQ JK301 MIDI OUT 2 3 3.3V 5V Buffer IC911 MKDATA,MKCLK CN102 15 3 1 Dec Dec IC308 IC308 5 6 12 13,14 6 CN2-4 CN303 MK-H , MK-L Keyboard 7 2,25-27 DAC IC700 1 DC-IN 16V Line Filter JK100 3 CN105 CN104 CN104 CN105 12V REG. +12A 1 CN103 3 CN908 SW TR103,105 2 /5TGIC 4,6 /5RD /FDCS 4 5A[0..
A B C D E F G H I J K L M N O P Q PSR-A1000 PSR-A1000 OVERALL CIRCUIT DIAGRAM 1/3 (DM1/2, INV) 1 1 to AM-CN106 (IC201,202-14p, IC205-12p, IC206-12p) (IC203-26p, IC207-12p) 2 INV REGULATOR +3.
A B C D E F G H I J K L M N O P Q PSR-A1000 PSR-A1000 OVERALL CIRCUIT DIAGRAM 2/3 (DM 2/2, PN1, PN2, PN3, PN4, ENC, PB1) 1 1 DM 2/2 2 2 3 3 SWX00B DRAM 4M MASK ROM 128M WAVE IC802: not installed 4 4 (IC911-12p) DATA BUS (IC911-14p) (IC308-12p) to DM 1/2 : O-6; P-6 ADDRESS BUS 5 (IC700-25p) (IC700-26p) (IC700-2p) (IC911-11p) (IC700-27p) 5 28CC1-8825414 6 6 ENC 7 7 28CC1-8825415 PN2 28CC1-8825415 PN4 28CC1-8825415 8 8 to DM-CN600 9 9 to PB1-CN16 to DM-CN10
A B C D E F G H I J K L M N O P Q PSR-A1000 PSR-A1000 OVERALL CIRCUIT DIAGRAM 3/3 (AM, VR, HP, SW, MKS5F, MK-L, MK-H) 1 1 S3V20 (VR313500) DIODE not installed NJM78L05UA(XJ598A00) REGULATOR +5V SI-8050S(LF1103) (XT514A00) REGULATOR +5V SFPB-62V (VZ060500) DIODE 1 2 2 1 OP AMP 2 3 2 R 2 AUX OUT (LEVEL FIXED) 4 1 5 1: V in 2: SW out 3: GND 4: V os 5: S.
