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Preface 

 
This  document  is  intended  to  assist  the  service  technician  in  the  operation, 
maintenance and repair of  the Alesis device.  Together with the User Reference 
Manual,  this  document  provides  a  complete  description  of  the  functionality  and 
serviceability  of  the  Device.    Any  comments  or  suggestions  you  may  have 
pertaining to the document are welcome and encouraged. 
 

READ THIS! 

In  addition  to  any  purchase  price  that  Alesis  may  charge  as  consideration  for  Alesis  selling  or 
otherwise transferring this service manual (“Manual”) to you, if you are not a service and repair 
facility  (“Service  Center”)  authorized  by  Alesis  in  writing  to  be  an  authorized  Service  Center, 
Alesis sells or transfers the Manual to you on the following terms and conditions: 
 
Only Service Centers authorized by Alesis in writing are authorized to perform service and repairs 
covered by an Alesis warranty (if any), and transfer of the Manual to you does not authorize you 
to  be  an  authorized  Service  Center.    Therefore,  if  you  perform,  or  if  the  Manual  is  used  to 
perform,  any  service  or  repairs  on  any  Alesis  product  or  part  thereof,  any  and  all  warranties  of 
Alesis as to that product and any service contract with Alesis for that product shall be voided and 
shall no longer apply for such product, even if your services or repairs were done in accordance 
with the Manual. 
 
All  service  or  repairs  done  by  you  or  with  reference  to  the  Manual  shall  be  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 
event of any failure to so perform. 
 
Your purchase of the Manual shall be for your own ultimate use and shall not be for purposes of 
resale or other transfer. 
 
As  the  owner  of  the  copyright  to  the  Manual,  Alesis  does  not  give  you  the  right  to  copy  the 
Manual, and you agree not to copy the Manual without the written authorization of Alesis.  Alesis 
has no obligation to provide to you any correction of, or supplement to, the Manual, or any new or 
superseding version thereof. 
 
Alesis shall have the right to refuse to sell or otherwise transfer repair parts or materials to you in 
its  sole  discretion.    You  shall  not  use,  sell  or  otherwise  transfer  spare  or  replacement  parts 
supplied by Alesis to you (i) to repair or be used in products manufactured for or by third parties 
or (ii) to any third parties for any purpose. 
 
You shall not make any warranties or guarantees with respect to the products of Alesis or the use 
thereof on behalf of Alesis or in your own name. 
 
The foregoing describes the entire understanding related to sale or transfer of the Manual to you, 
and  no  other  terms  shall  apply  unless  in  a  writing  signed  by  an  authorized  representative  of 
Alesis. 
 
All Trademarks are property of their respective companies. 

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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