Alesis A6 Servisní příručka

Confidential Alesis Service Manual 8-31-0089-CALESISA6 Andromeda (A6)Service ManualP/N: 8-31-0089-CThe information in this document contains privilege

Confidential Alesis Service Manual 8-31-0089-CTo perform this test, press soft button 3. All of the pixels on the LCD should turn black. Press any k

Confidential Alesis Service Manual 8-31-0089-C2.30 Front Panel Test ProcedureConnect the following cables/accessories to the A6 external ports:2.311 C

Confidential Alesis Service Manual 8-31-0089-C2.320 Test SSRAM function by pressing SB#4. Verify that the messages, first, "TESTING SLOW SRAM&quo

Confidential Alesis Service Manual 8-31-0089-C2.40 Tuning Test Procedure2.401 Power up the A6 while holding down soft button 4. Allow the unit to tun

Confidential Alesis Service Manual 8-31-0089-C2.50 QC Procedures for RepairThese are the procedures that should be done on an A6 after it has been rep

Confidential Alesis Service Manual 8-31-0089-C3.0 A6 TroubleshootingThe purpose of this section is to describe some of the most common problems with t

Confidential Alesis Service Manual 8-31-0089-C3.1 General TroubleshootingWhile this manual assumes that the reader has a fundamental understanding of

Confidential Alesis Service Manual 8-31-0089-C3.2 Boot Problems/Unit Hanging3.201 Unit Doesn’t Boot – No Splash Screen° If the backlight doesn’t go on

Confidential Alesis Service Manual 8-31-0089-C3.3 Front Panel Problems3.301 Buttons Don’t Work or are Intermittent° Make sure you have the latest vers

Confidential Alesis Service Manual 8-31-0089-C° Make sure the Ribbon Controller has been assembled correctly. Swap with a different Ribbon Controller

Confidential Alesis Service Manual 8-31-0089-CVersion HistoryVer A: BRS: added new cover page, added Fatar key removal instructions.Ver B: 6/13/02 BRS

Confidential Alesis Service Manual 8-31-0089-C3.5 Tuning Problems3.501 Single Voice Fails Tuning° Make sure all of the components around the ASIC wit

Confidential Alesis Service Manual 8-31-0089-C3.6 Mechanical Problems3.601 Endcaps Are Loose° Remove the endcap from the top panel. This will require

Confidential Alesis Service Manual 8-31-0089-C4.0 Repair ProceduresThis section contains repair procedures for the A6.4.1 Opening the UnitBefore open

Confidential Alesis Service Manual 8-31-0089-CTop Panel (with Front Panel Right board removedBottom PanelMain PCBAnalog ASIC PCBFatar KeybedBA02 Power

Confidential Alesis Service Manual 8-31-0089-C4.2 Replacing KeysThis section describes how to replace the Fatar keybed keys. You do not need to remov

Confidential Alesis Service Manual 8-31-0089-C4.22 Insert a flat-head screwdriver into the top slot of the key.4.23 Use the screwdriver to bend the

Confidential Alesis Service Manual 8-31-0089-C4.24 Slide the key off the keybed.

Confidential Alesis Service Manual 8-31-0089-C 1 ALESIS ANDROMEDA (A6) BOM PCB FILES

A6-UL BOM2002-09-18Part.NumberDescriptionQty PerRef.DesignatorA6-ULKEYBOARD ANALOG SYNTH ANDROMEDA A6 - UL17-41-0005CABLE POWER UL/CSA SJT17-51-1219-B

A6-UL BOM2002-09-189-15-0246-ASLEEVE POT-BUSHING DUAL A6 - REV A5(4)under large knob (1)Master Volume control under medium knob9-15-1150BEZEL CARD S61

Confidential Alesis Service Manual 8-31-0089-CPrefaceThis document is intended to assist the service technician in the operation, maintenance and repa

A6-UL BOM2002-09-182-11-2940REG VOLTAGE LM2940C 5V TO-2202U28 U382-24-0138IC OPTO-ISOLATOR 6N1381U12-27-0021ASIC KEY-SCAN PLCC-681U402-27-0022ASIC DSP

A6-UL BOM2002-09-189-61-0061IC FLASH IMAGE V1.33 (BOOT=V1.20.37/OS=V1.40.12) C/S:0X2B59 4/12/02 A61U32-69-6160IC FLASH-ROM 1024Kx16 90nS TSOP-4817-53-

A6-UL BOM2002-09-181-56-0104CAP 0.1uF X7R 0805 10% 50V85C34-35 C37-39 C41 C44 C47 C50 C58-61 C65 C68 C70-72 C82-85 C88-95 C100 C103 C106 C109 C111-113

A6-UL BOM2002-09-182-62-0138IC 74AHC138 3-8 DECODER/DEMUX SOP-163U12 U16-172-62-0573IC 74AHC573 OCTAL D-FF SOP-201U142-62-0574IC 74AHC574 OCTAL D FF W

A6-UL BOM2002-09-180-16-1000RES 100 OHM 1/10W 1% 08051R350-16-1001RES 1.00K OHM 1/10W 1% 08052R33-340-16-1003RES 100K OHM 1/10W 1% 08051R321-10-1102CA

A6-UL BOM2002-09-181-56-0103CAP 0.01uF X7R 080569C14-17 C140 C144 C148 C152 C156-157 C160-161 C164-165 C168-169 C172-173 C176-177 C180-181 C184-185 C1

A6-UL BOM2002-09-180-01-1821RES 1.82K OHM 1/8W 1%1R160-01-2612RES 26.1K OHM 1/8W 1%1R190-01-2741RES 2.74K OHM 1/8W 1%1R100-01-3652RES 36.5K OHM 1/8W 1

A6-UL BOM2002-09-187-07-0044INSULATOR TUBING FRS 18AWG x 7/8" STANDARD WALL2R3, R147-30-0011CHOKE COMMON MODE 0.65A 10mH1L17-30-0012CHOKE ROD OUT

Confidential Alesis Service Manual 8-31-0089-CWarningsTO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE, DO NOT EXPOSE THIS PRODUCT TO WATER OR MOISTURE.Th

Confidential Alesis Service Manual 8-31-0089-CSafety InstructionsCarefully read the applicable items of the operating instructions and these safety su

Confidential Alesis Service Manual 8-31-0089-C 1.0 Theory of OperationThe A6 is a 16-voice digitally-controlled real analog synthesizer.The heart of t

Confidential Alesis Service Manual 8-31-0089-C2.0 Test ProceduresThis document assumes basic familiarity with the A6 and the A6 User Manual. Please re

Confidential Alesis Service Manual 8-31-0089-C2.20 Diagnostic Software DescriptionThe A6 diagnostic software is contained within the boot section of

Confidential Alesis Service Manual 8-31-0089-CIf a pot reaches the nominal min and max values, the word “PASSED” will be displayed on the screen. Th