Yamaha PSR-410 [7/11] Verify

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PSR 410 PSR 510 2 3 STYLE ROM IC3 or 1C4 VERIFY IC3 style program has been included in IC4 on the half way of the production and IC3 will be deleted Adds the address of each bus and verifies the results Connection check Error Er4 Even when an error is indicated you can pro ceed to the next test by pressing the RESET key 2 4 TONE GENERATOR VERIFY VOICE ROM IC7 Adds the address of each bus and verifies the results Connection check Error Er5 Even when an error is indicated you can pro ceed to the next test by pressing the RESET key TEST 3 PANEL MIDI AND KEYBOARD TEST 3 1 PANEL SWITCH AND LED TEST A sine wave is generated when you press the panel switch At the same time MIDI note ON OFF messages for the note number at the same pitch as the sine wave are transmitted via Channel 1 The sine wave is at a level 9dB lower than the maximum level Pressing the switches turn the corresponding LEDs ON Pressing a numeric key pad displays the number on the left digit of the MULTI DISPLAY Each press of the switch moves the number to the right The number on the right most digit will return to the left most digit If two or more switches are turned on the MULTI DISPLAY will show At the same time MIDI note ON OFF messages of note number 127 will be transmitted via Chan nel 4 Sound will be produced for as long as the switch is held down The YES switch produces sounds only from the L channel and the NO switch produces sounds only from the R channel 31 3 2 PITCH BEND WHEEL TEST Turning the pitch bend wheel forward generates a sine wave of C4 At the same time MIDI note ON OFF messages for the note number at the same pitch as the sine wave are transmitted via Channel 3 The sound of sine wave is generated only when the pitch bend volume value exceeds 117 127 Turning the pitch bend wheel toward you generates a sine wave of C3 At the same time MIDI note ON OFF messages for the note number at the same pitch as the sine wave are transmitted via Channel 3 The sound of sine wave is generated only when the pitch bend volume value is 113 127 or lower If the panel switch is detected to be ON when the wheel is not centered the MULTI DISPLAY will show Er6 The wheel is regarded as centered when the pitch bend volume value falls between 58 127 and 69 127 3 3 FOOT PEDAL TEST Connecting the foot pedal which is usually ON but turns OFF when pressed to the connector generates a sine wave of D4 At the same time MIDI note ON OFF messages for the note number at the same pitch as the sine wave are transmitted via Channel 4 The pedal is regard ed as connected if the pedal AD value is 31 255 or lower Pressing the pedal generates a sine wave of D3 At the same time MIDI note ON OFF messages for the note number at the same pitch as the sine wave are transmitted via Channel 4 The pedal is regarded as pressed if the pedal AD value is 127 255 or higher Disconnecting the pedal will stop the sound If the reverse type of foot pedal is used nor mally OFF but turns ON when pressed a D3 sine wave is generated when the pedal is con nected to the terminal and is not pressed and a D4 sine wave is generated when it is pressed

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Здравствуйте! У моего синтезатора Yamaha PSR-410 странная проблема:1) Джойстик PitchBend при понижении тона работает нормально , а в сторону повышения тона идёт рывками. Замена резистора на исправный (проверен на другом устройстве) показало, что неисправность сохранилась. Есть подозрение на проблемы АЦП процессора.2) При отключенном автоаккомпанементе гармонический ряд звуков правильный, но при включении автоаккомпанемента партия левой руки ( автоаккомпанемента воспроизводится на полтона ниже. Встроенные тесты ( описаны в сервис мануале) проходят частично. и зависают. Есть подозрения либо на сбой в ППЗУ автоаккомпанемента, либо в процессоре.Может кто сталкивался с такими проблемами? Где искать проблему? Может есть у кого дамп ППЗУ ПСР410? для сравнения с тем, что записано в памяти моего инструмента?Возможно кто-то может одолжить материнку от ПСР410 для проверки исправности остальных плат, например контроллера клавиатуры?
2 года назад