Alesis AS4 Service Manual Download Page 4

Confidential 

Alesis Service Manual 

8-31-0132-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.  Power Source. 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.  Power Cord Protection. 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.  Periods of Non-use.  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.  Foreign Objects and Liquids.  Take care not to allow liquids to spill or objects to fall into any 

openings of the product. 

 
5.  Water or Moisture.  The product should not be used near any water or in moisture. 
 
6.  Heat.  Do not place the product near heat sources such as stoves, heat registers, radiators or 

other heat producing equipment. 

 
7.  Ventilation.  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.  Mounting.  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.  Cleaning.  The product should only be cleaned as the manufacturer recommends. 
 
10.  Service.  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.  Damage to the Product.  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.

Summary of Contents for AS4

Page 1: ...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 cop...

Page 2: ...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 perfo...

Page 3: ...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 OTHE...

Page 4: ...stoves heat registers radiators or other heat producing equipment 7 Ventilation When installing the product make sure that the product has adequate ventilation Improperly ventilating the product may...

Page 5: ...4 Turn on the audio source 5 Turn on the ProLinear 6 With the audio source material playing gradually turn up the Input Level control until the speaker is playing the audio material at a comfortable...

Page 6: ...Fig 1 A TAKE OUT THE 10 PCS SCREWS FROM THE REAR PANEL B TAKE OUT THE 3 PCS CONNECTOR FROM THE MAIN PCB Fig 1 2 REMOVAL OF WAVEGUIDE LED PCB Fig 2 A KTAE OUT THE 4 PCS SCREWS FROM THE WAVEGUIDE B TAK...

Page 7: ...WOOFER FROM THE FRONT BAFFLE AS4 Fig 3 1 A TAKE OUT THE 6 PCS SCREWS TO TAKE OUT THE TRIM RING AND THE WOOFER FROM THE FRONT BAFFLE AS5 Fig 3 2 Fig 3 1 Prolinear 720 Fig 3 2 Prolinear 820 4 REMOVAL OF...

Page 8: ...ROUNDING CABLE FROM THE REAR PANEL C TAKE OUT THE GROUNDING CABLE FROM THE AC SWITCH D TAKE OUT 1 PIN CABLE FROM AC SWITCH AND AC SOCKET E TAKE OUT 2 PIN CABLE FROM AC SWITCH AC SOCKET Fig 5 6 REMOVAL...

Page 9: ...SS Y Fig 7 A TAKE OUT 6 PCS SCREWS TO TAKE OUT THE MAIN PCB FROM THE REAR PANEL B TAKE OUT THE 4 PIN CABLE FROM THE POWER SUPPLY Fig 7 8 REMOVAL OF POWER SUPPLY Fig 8 A TAKE OUT 4 PCS SCREWS TO TAKE O...

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Page 12: ...AS4 EXPLODED VIEW PARTS LIST...

Page 13: ...AS5 EXPLODED VIEW PARTS LIST...

Page 14: ...Confidential Alesis Service Manual 8 31 0132 A ALESIS Prolinear 720 820 AS4 AS5 SCHEMATIC AND PCB FILES...

Page 15: ......

Page 16: ......

Page 17: ...Top Assembly Drawing...

Page 18: ...Top Layer Drawing...

Page 19: ...Bottom Assembly Drawing...

Page 20: ...Bottom Layer Drawing...

Page 21: ...Confidential Alesis Service Manual 8 31 0132 A ALESIS Prolinear 720 820 DSP AS1 AS3 ECN HISTORY...

Page 22: ...Confidential Alesis Service Manual 8 31 0132 A NOTE There were no ECNs related to this product when this service manual was created...

Page 23: ...Confidential Alesis Service Manual 8 31 0132 A ALESIS Prolinear 720 820 DSP AS1 AS3 BOM...

Page 24: ...SEPARATE WALL 1 1 7 90 0003 POLYBAG 0 01 1 7 91 1002 GEL SILICA 1 1 7 93 0001 SOFT SHEET 1 1 7 94 0007 PO BAG 1 1 9 03 0146 TWEETER PLATE 1 1 1 9 04 0028 CABINET 1 12 1 9 32 0020 TRIM RING 1 10 1 9 3...

Page 25: ...SMD 1 1 R16 3 0 16 1302 RESISTOR 13 0K 1 10W 1 4 R20 21 36 37 3 0 16 2001 RESISTOR 2K SMD 1 6 R41 42 63 64 66 67 3 0 16 3011 RESISTOR 3 01K SMD 1 2 R28 29 3 0 16 4321 RESISTOR4 32K SMD 1 4 R22 24 35 3...

Page 26: ...P SIL CONNECTOR 2 J2 3 3 4 15 0204 4P SIL CONNECTOR 1 J1 3 4 15 1002 CONNECTOR 2P SOCKET 1 J8 3 4 70 0027 5P CONNECTOR 260MM 1 J5 3 7 01 0024 CRYSTAL 12 288MHZ 1 X1 3 9 40 0297 PCB 1 3 9 61 0110 MCU 2...

Page 27: ...BLE HIGH FREQ TRANSDUCER 1 8 1 5 00 0410 SCREW 4 N2 1 5 00 1308 SCREW 2 N1 1 5 00 3519 SCREW 14 N3 1 5 00 4019 SCREW 6 N4 1 7 02 0031 TWEETER 1 5 1 7 02 0035 WOOFER 1 11 1 7 41 0005 CABLE POWER 1 1 7...

Page 28: ...0 44 47 3 0 16 1272 RESISTOR 12 7K SMD 1 1 R16 3 0 16 1302 RESISTOR 13 0K 1 10W 1 4 R20 21 36 37 3 0 16 2001 RESISTOR 2K SMD 1 6 R41 42 63 64 66 67 3 0 16 3011 RESISTOR 3 01K SMD 1 2 R28 29 3 0 16 432...

Page 29: ...22 J7 3 4 15 0200 2P SIL CONNECTOR 2 J2 3 3 4 15 0204 HEADER SIL 4P 3 96MM 1 J1 3 4 15 1002 CONNECTOR 2PSOCKET 1 J8 3 4 70 0027 5P CONNECTOR 260MM 1 J5 3 7 01 0024 CRYSTAL 12 288MHZ 1 X1 3 9 40 0297 P...

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