YAMAHA PORTATONE PSR A1. SERVICE MANUAL Pdf Download. SYSTEM RESET ··································································· 3. MIDI IMPLEMENTATION CHART ·········································· 3.
MIDI DATA FORMAT ······························································ 3. PARTS LIST BLOCK DIAGRAM OVERALL CIRCUIT DIAGRAM This document is printed on chlorine free (ECF) paper.
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HAMAMATSU, JAPAN Copyright (c) Yamaha Corporation. All rights reserved. PDF- K5. 53. 1 '0. 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. Speakers (1. 2 cm + 5 cm) x 2 Power Consumption 3. W Power supply Yamaha AC adaptor PA- 3.
Dimensions [W x D x H] 9. Music Stand) [3. 8- 5/1. Weight 1. 0. 0 Kg (2. PSR- A1. 00. 0 PANEL LAYOUT 1. AUTO FILL IN] button POWER STYLE [STANDBY/ON] switch STYLE buttons [FADE IN / OUT] button [SYNC. STOP] button WHEEL SCALE SETTING PITCH BEND [SCALE SETTING] buttons [SYNC. START] button [START / STOP] button PHONES..
PSR- A1. 00. 0 5. VOICE FLOPPY DISK [BACK] button VOICE buttons Floppy disk drive (3. NEXT] button TRANSPOSE Connectors VOICE PART ON / OFF [MAIN] button ] buttons [TO HOST] terminal VOICE PART ON / OFF [LAYER] button [HOST SELECT] switch TEMPO.. PSR- A1. 00. 0 CIRCUIT BOARD LAYOUT & WIRING Lower case assembly L1.
L1. 10 L1. 70 Speaker L (Woofer) Speaker R (Woofer) U3. U3. 90 Upper case assembly WH0. WH0. 03 WH0. 07 U4. WH0. 02 WH0. 07 MKS5. F Keyboard assembly WH0. WH0. 06 Speaker R (Tweeter) MK- H MK- L Speaker L (Tweeter) U3.
U3. 90 U4. 20.. PSR- A1. Location Part No. Connector Assembly Destination Remarks (V7. MKS5. F- CN1 DM- CN1. V7. 78. 26. 0) Speaker (Tweeter) AM- CN1. P L=8. 00 mm (V7. INVP INV- CN1 DM- CN1.
P L=2. 00 mm (V7. INV- CN2 LCD (Backlight) 4. P L=1. 00 mm (V8.
AM- CN1. 03 DM- CN9. L1. 10 (V7. 78. 25. Speaker (Woofer) AM- CN1. P L=8. 00 mm L1. 60 V7. PSR- A1. 00. 0 DISASSEMBLY PROCEDURE Caution: Be sure to attach the removed filament tape just as it was before removal.
Lower Case Assembly [2. Lower case assembly [2. Time required: About 5 minutes) Remove the sixteen (1. A]. PSR- A1. 00. 0 SW Circuit Board AM Circuit Board (Time required: About 1. Time required: About 1. Remove the lower case assembly. See procedure 1.) Remove the lower case assembly.
See procedure 1.) Remove the two (2) screws marked [3. The SW circuit Remove the INV circuit board.
PSR- A1. 00. 0 VR, ENC, PN1, PN2, PN3, PN4 Circuit 1. PN1 Circuit Board Boards and LCD (Time required: About 2. Remove the lower case assembly. See procedure 1.) 1. Remove the keyboard assembly. See procedure 8.) 1.
Remove the INV circuit board. See procedure 5.) 1. Remove the two (2) screws marked [5. B]. PSR- A1. 00. 0 1. PN4 Circuit board (Time required: About 2. Remove the five (5) screws marked [5.
I]. The PN4 cir- [5. Fig. 7) LCD holder 1. LCD (Time required: About 2. Remove the four (4) screws marked [5. J]. PSR- A1. 00. 0 LSI PIN DESCRIPTION HD6. F (XI9. 39. A0. 0) FDC ··············································································································· 1.
PD7. 89. 02. 2GB- A1. E (XZ5. 60. 10. 0) CPU KBS ················································································· 1. HD6. 41. 77. 09. F8. B (XV2. 50. B0. 0) CPU ··································································································· 1. HG7. 3C2. 05. AFD (XU9. C0. 0) SWX0. 0B ······························································································ 1. S1. D1. 33. 05. F0.
B1. 00 (XQ5. 95. A0. LCDC ···························································································· 1. AD1. 85. 4JRSRL (XY7. A0. 0) DAC ······································································································ 1. HD6. 32. 66. F (XI9.
A0. 0) FDC (Floppy Disk Controller) DM: IC3. NAME FUNCTION.. PSR- A1. HD6. 41. 77. 09. F8. B (XV2. 50. B0. 0) CPU DM: IC1.
NAME FUNCTION NAME FUNCTION CKE/PTK[5] CK enable (SDRAM)/ I/O port K System clock RAS3. L/PTJ[0] RAS/ I/O port J Vcc (RTC) Power supply (3. V) RAS2. L/PTJ[1] RAS/ I/O port J XTAL2 Clock CASLL/CAS/PTJ[2] CAS (DRAM)/CAS (SDRAM)/ I/O port J EXTAL2 Clock Ground (0 V)PSR- A1. HG7. 3C2. 05. AFD (XU9. C0. 0) SWX0. 0B (Tone Generator) DM: IC8. NAME FUNCTION NAME FUNCTION Initial clear CMA3 Program address bus Program address bus RFCLKI PLL Clock CMA8 PLL Control CMA2 Program address bus AVDD_PLL Power supply read signal AVSS_PLL Ground CMA1 Program address bus MODE0 SWX dual mode high byte effective signal..
PSR- A1. 00. 0 S1. D1. 33. 05. F0. 0B1. XQ5. 95. A0. 0) LCDC (LCD Controller) DM: IC5. NAME FUNCTION NAME FUNCTION Data bus output for 4 bit dot VRAM address bus XECL S driver enable, chain clock XSCL Data bus shift clock Ground /VWR VRAM read/write X driver latch pulse /VCE Memory control Frame signal for X/Y driver.. PSR- A1. 00. 0 IC BLOCK DIAGRAM SN7.
HCU0. 4NSR (XW8. 42. A0. 0) HD7. 4LV0. AFPEL (IS0. 00. 80.
HD7. 4LV2. 1ATELL (X0. A0. 0) SN7. 4HCU0.
N (IG1. 42. 25. 0) Quad 2 Input AND Dual 4 Input AND Hex Inverter DM: IC1. DM: IC3. 10 IC5. 10, 5. IC3. 01 SN7. 4HC1.
NSR (XW7. 92. A0. SN7. 4HCT1. 38. NSR (XY8. A0. 0) HD7. 4LVC1. FPEL (XS0. 48. A0. MM7. 4HC1. 32. SJX (XY3. A0. 0) 3 to 8 Demultiplexer Dual 2 to 4 Demultiplexer Quad 2 Input NAND DM: IC6. PSR- A1. 00. 0 M5.
P (XF7. 51. A0. 0) µPC4. HA (XB2. 47. A0. 0) µPC4. G2 (XF2. 91. A0. 0) 5- Band Graphic Equalizer Dual Operational Amplifier Dual Operational Amplifier AM: IC1. AM: IC1. 00, 1. 02, 1. DM: 7. 02, 7. 03 +DC Voltage - Vcc Output A Supply Inverting Output B Input A Inverting Non- Inverting Input B..
PSR- A1. 00. 0 CIRCUIT BOARDS DM Circuit Board to PN1- CN2 to PN1- CN1 to AM- CN1. AM- CN3. 03 to LCD to AM- CN3.
AM- CN1. 03 Component side 2. NA- V7. 63. 77. 0- 1.. PSR- A1. 00. 0 DM Circuit Board Pattern side 2. NA- V7. 63. 77. 0- 2.. PSR- A1. 00. 0 PN1 Circuit Board MEMORY REGISTRATION MEMORY PN2 Circuit Board MULTI PAD DIRECT ACCESS STOP CHANNEL ON/OFF BALANCE (DOWN) (UP) TAP TEMPO TEMPO + TEMPO - (DOWN) (UP) USER PERCUSSION (DOWN) (UP) (DOWN) (UP) SYNTH. CHOIR & PAD STRI (DOWN) (UP) ORGA TRAMPET..
PSR- A1. 00. 0 ENC Circuit Board to PN1- CN4 FREEZE DATA ENTRY ENTER Component side UPPER UPPER SCALE OCTAVE + OCTAVE - TUNING TRANSPOSE + TRANSPOSE - select J select I LEFT select H LAYER select G STRINGS SAX & FLUTE select F MAIN ORGAN &.. PSR- A1. 00. 0 ENC Circuit Board PN1 Circuit Board to PN2- CN7 Pattern side to ENC- CN1. DM- CN6. 00 to PN3- CN8 to DM- CN1. PN1, ENC: 2. NA- V9. PSR- A1. 00. 0 PN2 Circuit Board Pattern side Pattern side PN1, PN2: 2. NA- V9. 22. 22. 0.. PSR- A1. 00. 0 PN4 Circuit Board EXTRA TRACKS TRACK 2 TRACK 1 REPEAT METRONOME START/STOP SONG Component side PN3 Circuit Board STYLE CONTROL MAIN ACMP BREAK INTRO PB1 Circuit Board PITCH BEND to PN3- CN1.
Component side PN3, PN4, PB1: 2. NA- V9. 22. 23. 0.. PSR- A1. 00. 0 SOUND CREATOR select A DIGITAL RECORDING select B select C MIXING POP & ROCK LATIN & JAZZ DANCE & BALLROOM CONSOLE select D USER select E STYLE SCALE SETTING DEMO HELP FUNCTION SCALE MEMORY MEMORIZE ENDING/rit. SYNC. STOP SYNC. START START/STOP AUTO FADE.. PSR- A1. 00. 0 PN3 Circuit Board to PN1- CN3 2. NA- V9. 22. 23. 0..
PSR- A1. 00. 0 PN4 Circuit Board Pattern side to PB1- CN1. Pattern side PB1 Circuit Board Pattern side PN3, PN4, PB1: 2. NA- V9. 22. 23. 0.. PSR- A1. 00. 0 AM Circuit Board CONTRAST HOST SELECT MIDI PC1 PC2 MIDI TO HOST to DM- CN5. DM- CN9. 08 to DM- CN1. Component side to DM- CN1. VR Circuit Board MASTER VOLUME Component side AM, VR: 2.
NA- V7. 56. 84. 0.. PSR- A1. 00. 0 FOOT PEDAL AUX OUT (LEVEL FIXED) (SWITCH) to Speakers to Speakers : not installed (Woofer) (Tweeter) INV Circuit Board to LCD (Backlight) to DM- CN1. AM: 2. NA- V7. 56. Component side INV: 2. NA- V4. 20. 05. 0.. PSR- A1. 00. 0 OUT PUT L/L+R DC- IN 1. V SW Circuit Board STANDBY/ON Component side HP Circuit Board PHONES Component side Component side AM, HP, SW: 2.
NA- V7. 56. 84. 0.. PSR- A1. 00. 0 MK- L Circuit Board to MK- H Component side MKS5. F Circuit Board to MK- H to DM- CN1. Component side MK- L: 2.
NA- VV5. 83. 80 MKS5. F: 2. NAKZ- V8. 14.
PSR- A1. 00. 0 MK- H Circuit Board to MKS5. F- CN4 to MK- L Component side 2. NA- VV5. 83. 90. 0.. PSR- A1. 00. 0 TEST PROGRAM 1. Preparation 1) PA- 3.
AC adaptor) is used. The volume is usually moved to the use position when no volume change is required. Measuring instruments: frequency counter, level meter (with JIS- C filter) Note: Connect a stereo plug to the [PHONES] jack at 3. Jigs: foot switch (FC- 4), foot volume (FC- 7), MIDI cable, floppy disk (2.
HD &.. PSR- A1. LCD (initial) Test Function and Judgment criteria 0. 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. Hz sine wave, PAN=L) (PHONES L, R: 3. OUTPUT L/L+R, R: 1. AUX OUT L, R: 1. 0 kohm load)PSR- A1.
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. TABLE 1 ORDER SWITCH NOTE ORDER SWITCH NOTE EXTRA TRACKS TRACK2 TRACK1 REPEAT METRONOME.. PSR- A1. 00. 0 SYSTEM RESET This operation lets you restore the PSR- A1. 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) The functions and settings.. PSR- A1. 00. 0 MIDI IMPLEMENTATION CHART YAMAHA [ Portable Keyboard ] Date : 2.
March 2. 00. 2 Model PSR- A1. MIDI Implementation Chart Version : 1. Function.. Transmitted Recognized Remarks Basic Default 1 - 1. Channel Changed 1 - 1.