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ALESIS 

HD24 (RL) 

Service Manual 

P/N: 8-31-0092-B 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The information in this document contains privileged and confidential information.  
It is intended only for the use of those authorized by Alesis.  If you are not the 
authorized, intended recipient, you are hereby notified that any review, 
dissemination, distribution or duplication of this document is strictly prohibited.  If 
you are not authorized, please contact Alesis and destroy all copies of this 
document.  You may contact Alesis at [email protected]
 
Copyright © 2002 Alesis Distribution, LLC.

 

ATTENTION! 

THIS DOCUMENT CONTAINS SENSITIVE 

PROPRIETARY INFORMATION.  ALL 

RECIPIENTS MUST HAVE A CURRENT NON-

DISCLOSURE AGREEMENT ON FILE WITH 

ALESIS DISTRIBUTION, LLC. 

 

DO NOT DISTRIBUTE THIS DOCUMENT IN 

ELECTRONIC FORM

 

WATERMARK DISTRIBUTION 

This  document  has  been  flagged  for  watermark 
distribution.    Before  supplying  a  printed  copy  to  the 
service center or distributor, print out a copy onto paper 
that  has  been  watermarked  for  the  specific  company.   
This will allow for document distribution history. 

Summary of Contents for ADAT HD24 FirePort 1394

Page 1: ... destroy all copies of this document You may contact Alesis at support Alesis com Copyright 2002 Alesis Distribution LLC ATTENTION THIS DOCUMENT CONTAINS SENSITIVE PROPRIETARY INFORMATION ALL RECIPIENTS MUST HAVE A CURRENT NON DISCLOSURE AGREEMENT ON FILE WITH ALESIS DISTRIBUTION LLC DO NOT DISTRIBUTE THIS DOCUMENT IN ELECTRONIC FORM WATERMARK DISTRIBUTION This document has been flagged for waterm...

Page 2: ...solely your responsibility and Alesis shall have no liability for any such repairs or service work All such service or repairs are performed at the sole risk of the person performing the service or repairs You agree that all such work will be performed in a competent professional and safe manner at all times and to indemnify and fully hold Alesis and its successors and assigns harmless in the even...

Page 3: ...Force the ADAT HD24 Boot Software to load OS code via MIDI In the case where the software on the flash is valid yet not compatible with the hardware this will force the HD24 to load new software using the MIDI Track 9 Track 20 Reconfigure Hardware This will force the PLD firmware to be reloaded In the case where a PLD part is replaced its firmware can be loaded through this method Track 1 Track 8 ...

Page 4: ...HD24 MAIN PCB Rev D ...

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Page 16: ...HD24 MAIN PCB Rev F ...

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Page 28: ...HD24 A D PCB Rev A ...

Page 29: ...RLADA01A sch 1 Mon Jan 08 18 55 53 2001 ...

Page 30: ...RLADA01A sch 2 Mon Jan 08 18 56 08 2001 ...

Page 31: ...RLADA01A sch 3 Mon Jan 08 18 56 19 2001 ...

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Page 36: ...HD24 D A PCB Rev A ...

Page 37: ...RLDAA00A sch 1 Mon Jan 08 18 54 06 2001 ...

Page 38: ...RLDAA00A sch 2 Mon Jan 08 18 54 44 2001 ...

Page 39: ...RLDAA00A sch 3 Mon Jan 08 18 55 07 2001 ...

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Page 44: ...HD24 Alpha PCB Rev A ...

Page 45: ...RLFAA01A sch 1 Tue Nov 20 16 38 08 2001 ...

Page 46: ...RLFAA01A sch 2 Tue Nov 20 16 38 30 2001 ...

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Page 50: ...HD24 Meter PCB Rev A ...

Page 51: ...rlfmA01A sch 1 Tue Nov 20 17 10 42 2001 ...

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Page 55: ...HD24 HD I F PCB Rev A ...

Page 56: ...RLHDA02A sch 1 Mon Nov 05 14 40 47 2001 ...

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Page 62: ...HD24 HD I F PCB Rev B ...

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Page 70: ...HD24 ECN History ...

Page 71: ...ENGINEERING CHANGE NOTICE Was 9 40 0231 C PCBMAIN RL REV C Is 9 40 0231 F PCBMAIN RL REV F REASON FOR CHANGE SPECIAL INSTRUCTIONS Number of p gesa11ached PRO J G lJEE MfN R J D ...

Page 72: ...ENGINEERING CHANGE NOTICE SeeAttachedSheet REASON FOR CHANGE SPECIAL INSTRUCTIONS Number ofp lgesattached L Y c 9Ll _ PROJECT ENGINE Robert Schmanski MANF ENGINEER I IRECT ...

Page 73: ... rectangles from the PCB Be careful to lift pins straight to keep from breaking them off 3 Connect 220 Ohm resistor between pins 7 and 8 of U2 green rectangle 4 Short pins 9 and 10 of U4 with solder blob or wire wrap wire blue line 5 Connect U2 pin 7 to U4 pin 11 with wire wrap wire blue line 6 Connect U4 pin 8 to T6 SYNC IN WCLK with wire wrap wire blue line 7 Secure wires to PCB with hot melt gl...

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Page 75: ... PCB Rev C September 19 2001 Fig 1 Circuit Modification Diagram Steps 1 Cut Trace from R26 to T3 as close to R26 as possible at red arrow 2 Connect 47 Ohm 1 8 Watt resistor between T3 and the lower right pad of R26 blue line w resistor symbol ...

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Page 77: ... 05 2001 Section 1 PCB Modification 1 Apply the Foam Strip 9 34 0026 to the Capacitor 1 08 0228 2 Form the leads of the Capacitor 1 08 0228 as shown in the diagrams below 3 Solder the Capacitor 1 08 0228 to the HD Backplane PCB 9 79 0238 as shown ...

Page 78: ...TOP VIEW SIDE VIEW ...

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Page 80: ...HD24 BOM ...

Page 81: ...N 1 DB 9 BRACKET RL 5 00 3509 SCREW M3 5 x 8mm PFZ 2 EXTRUSION TO SUBPANEL RL 5 01 0026 WASHER SPLITLOCK 6 ZINC PLATED STEEL 250 X 148 X 031 MEDIUM 8 4 HD CAGE TO SUBPANEL 4 HD CAGE FAN RL 5 02 6327 NUT HEX M3 5 ZINC 8 4 HD CAGE TO SUBPANEL 4 HD CAGE FAN RL 7 10 0109 FAN 80x80x25mm 12VDC 2500RPM 30CFM 1 RL 7 10 0114 ASSY OEM HARD DISK DRIVE IDE 20GB 1 RL 7 24 0014 FOAM INSERT ACCESSORY BOX BOTTOM ...

Page 82: ...6 1004 RES 1 00M OHM 1 10W 1 0805 5 R3 R25 R40 41 R68 9 79 0231 0 16 1009 RES 10 0 OHM 1 10W 1 0805 1 R33 9 79 0231 0 16 2002 RES 20 0K OHM 1 10W 1 0805 4 R11 R13 14 R45 9 79 0231 0 16 2210 RES 221 OHM 1 10W 1 0805 4 R8 R59 R97 98 9 79 0231 0 16 3650 RES 365 OHM 1 10W 1 0805 3 R9 R60 R63 9 79 0231 0 16 4750 RES 475 OHM 1 10W 1 0805 1 R43 9 79 0231 0 16 4753 RES 475K OHM 1 10W 1 0805 1 R47 9 79 023...

Page 83: ...DUAL POS EDGE D FF W CLR PRESET SOP 14 1 U23 9 79 0231 2 62 0138 IC 74AHC138 3 8 DECODER DEMUX SOP 16 1 U42 9 79 0231 2 62 0245 IC 74AHC245 OCTAL BUS TRANSCEIVERS W TRI STATE OUTS SOP 20 1 U36 9 79 0231 2 62 1004 IC 74AHCU04 HEX INVERTER UNBUFFERED SOP 14 1 U26 9 79 0231 2 62 6541 IC 74AHCT16541 16 BIT BUFFER DRIVER W TRI OUTS SOP 48 2 U15 U40 9 79 0231 2 62 8374 IC 74AHC16374 16 BIT D FF W TRI OU...

Page 84: ...WITH M1 M2 9 79 0231 7 01 0005 CRYSTAL 20 MHz KDS 1 M1 9 79 0231 7 01 0034 CRYSTAL 33 333 MHz PARALLEL 18pF HC 49U 1 M2 9 79 0231 7 01 0035 OSCILLATOR 54 MHz 3 3V DIP 8 1 U41 9 79 0231 7 40 0039 TRANSFORMER DUAL ISOLATION CENTER TAPPED TOROIDAL 1 1 1 2 5 1 X1 9 79 0231 9 03 0051 A BRACKET DB9 CONNECTOR RL REV A 1 INSTALL WITH J1 9 79 0231 9 03 1132 HEATSINK 1 INSTALL WITH U24 9 79 0231 9 40 0231 F...

Page 85: ...EREO DUAL STACKED 180ø W GRND LUG 12 J1 12 9 79 0232 4 14 2601 HEADER DIL 26 PIN 0 1 MALE 1 J13 9 79 0232 5 00 0021 SCREW 4 40 x 3 8 PPZ 2 INSTALL WITH U9 U18 9 79 0232 5 01 0029 WASHER FLAT 4 ZINC 0 25 OD 2 INSTALL WITH U9 U18 9 79 0232 5 02 4402 NUT HEX 4 40 2 INSTALL WITH U9 U18 9 79 0232 5 04 0007 WASHER 4 SPLITLOCK 2 INSTALL WITH U9 U18 9 79 0232 9 40 0232 A PCB A D RL REV A 1 RL 9 79 0233 AS...

Page 86: ...7 138 C140 C144 C154 C156 C158 159 C167 168 C170 171 9 79 0233 2 11 7805 REG VOLTAGE LM7805C 5V TO 220 2 U7 U14 9 79 0233 2 71 3079 IC MC33079 QUAD OP AMP SOP 14 6 U2 U5 U9 U12 U16 U19 9 79 0233 2 75 1201 IC CONVERTER D A 24 BIT AL1201 SOP 16 12 U1 U3 4 U6 U8 U10 11 U13 U15 U17 18 U20 9 79 0233 4 02 0902 JACK 1 4 STEREO DUAL STACKED 180ø W GRND LUG 12 J1 12 9 79 0233 4 14 2601 HEADER DIL 26 PIN 0 ...

Page 87: ... 40V 1A TO 92 1 Q1 9 79 BD01 2 03 4403 TRANS PNP 2N4403 40V 600mA TO 92 1 Q2 9 79 BD01 2 05 0227 TRANS OFF LINE PWM SWITCH 150W TO 223 1 U1 9 79 BD01 2 11 0431 REG ADJ SHUNT TL431 2 5V 36V 100mA 2 TO 92 1 U3 9 79 BD01 2 24 8104 IC OPTO ISOLATOR TCDT1124 6 PIN 1 U2 9 79 BD01 2 99 0021 DIODE BAV21 SOD 27 1 D7 9 79 BD01 4 09 0010 CON PWR IEC 10A 250V PCB MOUNT W TOP GND LUG 1 J1 9 79 BD01 4 15 0200 H...

Page 88: ...RES 100 OHM 1 8W 1 4 R11 R12 R13 R14 9 79 1051 0 01 5110 RES 511 OHM 1 8W 1 1 R10 9 79 1051 0 01 5119 RES 51 1 OHM 1 8W 1 7 R1 R3 R4 R5 R6 R7 R8 9 79 1051 0 01 6819 RES 68 1 OHM 1 8W 1 1 R9 9 79 1051 0 01 7509 RES 75 0 OHM 1 8W 1 1 R2 9 79 1051 6 02 0011 SWITCH TACT 13 9 79 1051 9 40 1051 PCB MAIN LRC 1 RL 9 96 0078 ASSY ALPHA DISPLAY MODULE RL 1 9 96 0078 5 00 1308 SCREW M3 x 8mm PPB PLASTITE 8 P...

Page 89: ... OCTAL D FF W TRI STATE OUTS SOP 20 2 U5 6 9 79 0235 2 79 1162 IC DRIVER DISPLAY VAC FLR MSC1162A ANDODE GRID SSOP 60 2 U1 2 9 79 0235 3 02 0012 LED GREEN HLMP 1540 T1 5 D2 6 9 79 0235 3 02 0014 LED RED HLMP 1340 T1 1 D1 9 79 0235 4 20 2600 HEADER DIL 26 PIN 0 1 MALE SMD 1 J1 9 79 0235 4 20 3400 HEADER DIL 34 PIN 0 1 MALE SMD 1 J2 9 79 0235 7 40 0023 TRANSFORMER SINGLE DC DC CONVERTER RL 1 T1 9 79...

Page 90: ...6 FOAM EVA STRIPS 25 x 12 x 0 5mm X5 1 PLACE ON DRIVE CAGE UNDER CAPACITOR 9 96 0080 9 79 0238 ASSY PCB HD INTERFACE RL 1 9 79 0238 0 16 1001 RES 1 00K OHM 1 10W 1 0805 3 R1 R3 R6 9 79 0238 0 16 1002 RES 10 0K OHM 1 10W 1 0805 1 R2 9 79 0238 0 16 1003 RES 100K OHM 1 10W 1 0805 1 R5 9 79 0238 0 16 1004 RES 1 00M OHM 1 10W 1 0805 1 R4 9 79 0238 0 17 0470 RES CHIP ARRAY 4 X 47 OHM 1 16W 5 ISOLATED c ...

Page 91: ...SHER FLAT 4 ZINC 0 25 OD 1 INSTALL WITH U4 9 79 0238 5 02 4402 NUT HEX 4 40 1 INSTALL WITH U4 9 79 0238 5 04 0007 WASHER 4 SPLITLOCK 1 INSTALL WITH U4 9 79 0238 7 20 0065 INDUCTOR 22uH 1 29A 5x8 5x11 5mm 20 2 L1 2 9 79 0238 9 34 0026 FOAM EVA STRIPS 25 x 12 x 0 5mm X5 1 9 79 0238 9 40 0238 A PCB HD INTERFACE RL REV A 1 Confidential Alesis Service Manual 8 31 0092 B ...

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