Alesis CD Twin User manual

ALESIS
CD-TWIN (CC0)
Service Manual
P/N: 8-31-0142-A
ATTENTION!
THIS DOCUMENT CONTAINS SENSITIVE
PROPRIETARY INFORMATION. ALL
RECIPIENTS MUST HAVE A CURRENT NON-
DISCLOSURE AGREEMENT ON FILE WITH
ALESIS, LLC.
DO NOT DISTRIBUTE THIS DOCUMENT IN
ELECTRONIC FORM
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Before supplying a printed copy to the service center or
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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 © 2004 Alesis, LLC
Confidential Alesis Service Manual 8-31-0142-A

Confidential Alesis Service Manual 8-31-0142-A
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.

Warnings
TO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE, DO NOT EXPOSE
THIS PRODUCT TO WATER OR MOISTURE.
The arrowhead symbol on a lightning flash inside a triangle is intended to
alert the user to the presence of un-insulated "dangerous voltage" within the
enclosed product which may be of sufficient magnitude to constitute a risk
of electric shock to persons.
The exclamation point inside a triangle is intended to alert the user to the
presence of important operating, maintenance and servicing instructions in
the literature which accompanies the product.
REPAIR BY ANY PERSON OR ENTITY OTHER THAN AN AUTHORIZED
ALESIS SERVICE CENTER WILL VOID THE ALESIS WARRANTY.
PROVISION OF THIS MANUAL DOES NOT AUTHORIZE THE RECIPIENT
TO COMPETE WITH ANY ALESIS DISTRIBUTOR OR AUTHORIZED
REPAIR SERVICE CENTER IN THE PROVISION OF REPAIR SERVICES OR
TO BE OR MAKE REPAIRS AS AN AUTHORIZED SERVICE CENTER.
ALL REPAIRS DONE BY ANY ENTITY OTHER THAN AN AUTHORIZED
ALESIS SERVICE CENTER SHALL BE SOLELY THE RESPONSIBILITY OF
THAT ENTITY, AND ALESIS SHALL HAVE NO LIABILITY TO THAT
ENTITY OR TO ANY OTHER PARTY FOR ANY REPAIRS BY THAT ENTITY.
Regarding the Power Supply Fuse
CAUTION: The product under service may employ the use of a
replaceable fuse. Danger of fire or electrocution if fuse is incorrectly
replaced. Replace with only the same type or equivalent type
recommended by the equipment manufacturer.
Regarding the Internal Battery
CAUTION: The product under service may employ the use of a
internal battery. Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the
manufacturer. Dispose of used batteries according to the
manufacturer's instruction.
Confidential Alesis Service Manual 8-31-0142-A

Confidential Alesis Service Manual 8-31-0142-A
Safety Instructions
Carefully read the applicable items of the operating instructions and these safety
suggestions before using this product. Use extra care to follow the warnings written on
the product itself and in the operating instructions. Keep the operating instructions and
safety suggestions for reference in the future.
1. UPower SourceU. The product should only be connected to a power supply which is described either in
the operating instructions or in markings on the product.
2. UPower Cord ProtectionU. AC power supply cords should be placed such that no one is likely to step on
the cords and such that nothing will be placed on or against them.
3. UPeriods of Non-useU. If the product is not used for any significant period of time, the product's AC
power supply cord should be unplugged from the AC outlet.
4. UForeign Objects and LiquidsU. Take care not to allow liquids to spill or objects to fall into any openings
of the product.
5. UWater or MoistureU. The product should not be used near any water or in moisture.
6. UHeatU. Do not place the product near heat sources such as stoves, heat registers, radiators or other heat
producing equipment.
7. UVentilationU. When installing the product, make sure that the product has adequate ventilation.
Improperly ventilating the product may cause overheating, which may damage the product.
8. UMountingU. The product should only be used with a rack which the manufacturer recommends. The
combination of the product and rack should be moved carefully. Quick movements, excessive force or
uneven surfaces may overturn the combination which may damage the product and rack combination.
9. UCleaningU. The product should only be cleaned as the manufacturer recommends.
10. UServiceU. The user should only attempt the limited service or upkeep specifically described in the
operating instructions for the user. For any other service required, the product should be taken to an
authorized service center as described in the operating instructions.
11. UDamage to the ProductU. Qualified service personnel should service the unit in certain situations
including without limitation when:
a. Liquid has spilled or objects have fallen into the product,
b. The product is exposed to water or excessive moisture,
c. The AC power supply plug or cord is damaged,
d. The product shows an inappropriate change in performance or does not operate normally, or
e. The enclosure of the product has been damaged.

1
Service Manual
High-Speed CD DUPLICATOR
Alesis CD TWIN
Version:1.00
Specification
Support Disc Format
Blank Disc Type
Copy Function
Connection Interface
Audio Output
Power Supply
Front control panel
Dimension
Weight
All the Audio CD, Data CD, VCD, CD-I, Photo-CD
CD-R,CD-RW
CD to CD, Edit Personal Audio CD
USB2.0 connect to PC as external CD-RW
Earphone Jack (44.1KHz, 16bit Stereo),
Line out (44.1KHz, 16 bits Stereo)
100V~240V, 50/60 Hz, AC input
2x16 LCD display, 4 control key (START, Cancel, >>, <<)
286(mm) x 226(mm) x 62(mm)
1760 g
Specifications shown are reference
only. Design andSpecifications
subject to change without notice.

2
Table of Contents
Specification .....................................................................................................1
1. Electrical Adjustment.................................................................................. 3
1.1 Master Controller Component .................................................................................................. 3
1.2 Circuit Statement....................................................................................................................... 4
1.2.1 Micro Controller (MPU)..............................................................................................4
1.2.2 CMOS Flash Memory 128K x 8bits (BIOS)............................................................4
1.2.3 Memory Buffer (256K x 16 bits DRAM IC).............................................................4
1.2.4 Complex Programmable Logic Device ...................................................................4
1.2.5 USB 2.0 to ATA/ATAPI Bridge..................................................................................4
1.2.6 Serial EEPROM..........................................................................................................4
1.2.7 10-BIT EFT BUS SWITCH........................................................................................5
1.2.8 POWER REGION.......................................................................................................5
1.3 Component Package.................................................................................................................. 6
1.4 Question Analyze .................................................................................................................... 10
1.4.1 Before check of power on.......................................................................................10
1.4.2 CD-BACKUP mode Analyze...................................................................................11
1.4.3 USB mode Analyze ..................................................................................................12
1.4.4 Common repair question.........................................................................................13
1.5 Operating statement ................................................................................................................ 14
1.5.1 CD to CD BACKUP..................................................................................................14
1.5.2 COPY TRACK...........................................................................................................14
1.5.3 CLOSE DISC............................................................................................................15
1.5.4 MUSIC PLAYER.......................................................................................................16
1.6 Firmware update step.............................................................................................................. 17
1.6.1 Update file define .....................................................................................................17
1.6.2 Update step statement............................................................................................17
1.6.2 Firmware Version Inquire........................................................................................18
2.Charts and Diagrams.................................................................................19
2.2 Master controller circuit.......................................................................................................... 19
2.3 Earphone Circuit ..................................................................................................................... 20
2.4 System circuit block................................................................................................................ 21
3 Mechanism Exploded Views and Parts List..............................................22
3.1Machine Parts List ................................................................................................................... 22
3.2 Integration Case Assy............................................................................................................. 24
3.3 Up Case Particular Assy.......................................................................................................... 25
3.4 Key Parts of CD-RW and CD-ROM Assy.............................................................................. 26
3.5 Up Case Complete Assy.......................................................................................................... 27
4 Electrical Parts List....................................................................................28

3
1. Electrical Adjustment
1.1 Master Controller Component
1.Micro Controller (MPU) SIN-0002A
2.CMOS Flash Memory(128Kx8bits)39SF010-70
3.Cache Buffer RAM (256Kx16bits) GLT44016-28J4
4.Complex Programmable Logic Device 2310700002
5.USB 2.0 to ATA/ATAPI Bridge CY7C68300
6.SERIAL EEPROM 24LC02N
7.10-BIT EFT BUS SWITCH 74CBT3384A
8.POWER REGION 17805-5V andAPL1117-3.3V
1U3
Micro Controller (MPU)
SIN-0002A
2U2
CMOS Flash Memory (128K x
8bits) 39SF010-70
3U1
Cache Buffer RAM (256K x 16bits)
GLT44016-28J4
4U7
Complex Programmable Logic
Device 2310700003
5U2
USB 2.0 to ATA/ATAPI Bridge
CY7C68300A
6U5
Serial EEPROM
24LC02N
7U9 & U10
10-BIT EFT BUS SWITCH
74CBT3384A
8U8 & U11
Power Regulator IC
ROHM 17805-5V
APL1117-3.3V

4
1.2 Circuit Statement
1.2.1 Micro Controller (MPU)
Component：SIN-0002A PQFP
SIN-0002 is part of X86 serial MPU. In duplicator of function is conscientious for
circuit controller. Major of control are include IDE decoder interface command to control
CD-ROM and CD-RW read or write, LCD display string control, choice function key and
execute copy function, USB mode for external CD-RW exchange control…etc.
1.2.2 CMOS Flash Memory128K x 8bits (BIOS)
Component：SST39SF010-70
SST 39SF010 is part of CMOS flash memoryserial for 1MB capacity. Major of
function is storage duplicator source core and in general name is BIOS. The inside of
storage are include IDE decoder interface command to control CD-ROM and CD-RW
read or write, LCD display string control, choice function key and execute copy function,
USB mode for external CD-RW exchange control programs. The BIOS govern is
depend on firmware version to conform checksum.
1.2.3 Memory Buffer (256K x 16 bits DRAM IC)
Component：M11B416256A-25J SOJ-40 (Elite MT)
GLT44016-28J4 SOJ-40 (G-LINK)
IS41C16256-25K SOJ-40 (ICSI)
The memory buffer with 4MB DRAM has includes M11B416256A-25J,
GLT44016-28J4 and IS41C16256-25K for brand of name. When duplicator is finish
system boot then firmware will download to memory buffer. After system in main
function that will execute any command from memory buffer.
1.2.4 Complex Programmable Logic Device
Component：2310700003 TQFP100
The Complex Programmable Logic Device is support 64 I/O ports. Main of provides
for LCD control signal (LCD_DB0~LCD_DB7) for multiplexed BUS (AD0~AD7) to latch
output. The LCD_EN signal to decision data latch output and display character string to
LCD. The AD0~AD15 for multiplexed data and address bus exchange that cause DIR
signal to decision receive or transmission data. For CD-ROM device signal control that
includes B_CS17X, B_DREQ0, B_DACK0, B_RD0, B_WR0 ...etc. For CD-RW device
signal control that includes B_CS1FX, B_DREQ1, B_DACK1, B_RD1, B_WR1…etc.
1.2.5 USB 2.0 to ATA/ATAPI Bridge
Component：CY7C68300A
The CY7C63800A is provided ATA/ATAPI interface exchange to USB2.0 function. If
U_BUS_PWR_IN is “Low”that mean USB cable is not plug to connector. The system
will be duplicator mode. When U_BUS_PWR_IN is “High”that mean USB cable is plug
to connector. Then U_ATA_EN will from “Low”to “High”and allow ATA bus sharing with
CD-RW device. The system will exchange to external CD-RW USB mode.
1.2.6 Serial EEPROM
Component：24LC02N
Major of function is provides storage of Cypress CY7C63800A USB ID program.
The serial EEPROM capacity is 2Kbytes. Utilize SCL and SDA signals for two-way BUS
to transmission data.

5
1.2.7 10-BIT EFT BUS SWITCH
Component：74CBT3384A
Major of function is multiplexed address and data bus exchange for CD-BACKUP
mode or USB mode for CD-RW device. When U_ATA_EN is “Low”that bus switch will
exchange CD-RW device for CD-BACKUP multiplexed bus. When U_ATA_EN is “High”
that bus switch will exchange CD-RW device for USB multiplexed bus.
1.2.8 POWER REGION
Component：APL1117-33VC-TR (SOT-223)
BA17805FP (SOT-252)
Major of power supply is +5V but some of IC is necessary +3.3V for system.
Therefore design APL1117-33VC-TR regulator circuit to step-down for +3.3V. Presently
to use +3.3V that include U2, U3 and U7 component. Additional BA17805FP regulator
circuit is provide stable +5V for LCD component.

6
1.3 Component Package
U3
SIN-0002A
U2
39SF010-70