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Alesis DM8, Руководство по обслуживанию

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SPECIFICATION 

 

FEATURES 

 

1.

 

Professional drum module with over 750 multi-sampled, Dynamic Articulation

™

 sounds 

2.

 

Compact design is easy to fit into any setup, and mounts on stands or racks with built-in 

mount zone 

3.

 

Works with 3-zone ride, continuous hi-hat control, and cymbals with choke capability 

4.

 

Premium instrument library multi-sampled from real drums and cymbals 

5.

 

Dynamic Articulation

™

 changes sounds character along with dynamics for realism 

6.

 

Main pad and trigger inputs via single-connection cable snake, plus two dual-zone 

expansion inputs 

7.

 

Stereo 1/8" mix input for practicing with CD and MP3 players 

8.

 

Play along with tracks and record yourself with the sequencer and advanced metronome 

9.

 

USB MIDI for interface with software on Mac and PC; MIDI in for performance with 

external controllers 

SERVICE MANUAL 

 

 

MODEL: DM8 

Содержание DM8

Страница 1: ...ment library multi sampled from real drums and cymbals 5 Dynamic Articulation changes sounds character along with dynamics for realism 6 Main pad and trigger inputs via single connection cable snake plus two dual zone expansion inputs 7 Stereo 1 8 mix input for practicing with CD and MP3 players 8 Play along with tracks and record yourself with the sequencer and advanced metronome 9 USB MIDI for i...

Страница 2: ...e power supply Plug the external power supply into the AC line voltage source but do not plug the power supply into the DM8 yet Use an AC volt meter and measure the AC voltage on the power supply output plug It should be 9VAC to 12VAC If the voltage is too high it may damage the DM8 unit Do not plug it into the DM8 Locate and correct the problem with the power supply or the AC Line voltage before ...

Страница 3: ...st Passed Or the following if it fails RAM Test Failed 5 Trigger Micro Self Test Diags Microcontroller a Verify that none of the trigger cables are plugged into any drums Also verify nothing is plugged into the PERC1 or PERC2 TRS jacks Otherwise the test will fail b Press PLAY to begin the trigger micro self test If it passes the trigger micro responds with passed message to the DSP and the LCD wi...

Страница 4: ...test First all LEDs will turn on and the LCD will display the following LED All On Verify that all the LEDs have turned on b Use CURSOR UP and CURSOR DOWN to cycle through the individual LEDs For each LED verify that the LED name displayed on the LCD matches the LED that is actually lit c Press STOP after cycling through all LEDs to end the test 8 Switch Test Diags Switch a Press PLAY and the LCD ...

Страница 5: ...count decreases c In addition verify that a single jog click produces only one count increase or decrease according to the direction the jog wheel was turned 10 Audio Tests Diags Audio Additional equipment Audio Precision System 1 or better and necessary cabling Headphones Before starting the test turn down Main level Then press PLAY to start the audio test The LCD will display the following AUDIO...

Страница 6: ...one jack b Press CURSOR DOWN several times to select All again Then slowly turn up the Main level to a comfortable volume Verify that the tone can be heard on both the left and right earpieces c Press CURSOR UP once to select MainL and confirm that the tone is only audible from the left earpiece Press CURSOR UP once more to select MainR and confirm that the tone is only present on the right earpie...

Страница 7: ...rn off the signal to Aux left input and verify that only the Headphone right output has a tone e Turn off the signal to both the Aux left and right input and verify that the SNR for both Headphone left and right outputs is at least 90dB 95dB A weighted 22 22KHz BW 11 Flash Test Diags Flash a Press PLAY to begin the test It will take about 15 seconds to complete During this time the LCD will displa...

Страница 8: ...ator capable of at least 5Vpeak output a Press PLAY The screen will display KICK CABLE b Set to the sine wave generator output to 5V peak at 100Hz and connect the generator to the trigger tester c Plug the KICK cable into the trigger tester The LCD will display the following KICK CABLE And after about half a second it will inform the user to test the TIP KICK CABLE Test TIP Verify that the cable n...

Страница 9: ...PERC1 JACK Test RING Level OK Trig 1 298 f If the TIP or RING passes and the cable being tested has a SWITCH input a screen similar to this will be shown PERC1 JACK Test SWITCH Press S3 on the trigger tester to test the SWITCH If a switch closure is detected the LCD will display the following briefly PERC1 JACK Test SWITCH Level OK Trig 1 16383 g At this point if all the previous tests pass TIP an...

Страница 10: ...he LCD will display the following KICK CABLE Test TIP Incorrect input Trig 5 299 Pressing STOP will allow the user to skip the current test if it is not passing in order to continue 2 For any jack that fails the LCD will display the following PERC1 JACK Failed TIP RING SW Retry or test another jack Only the item s that failed will be displayed For example if the TIP and SWITCH failed the LCD will ...

Страница 11: ...AT Press S2 on tester c Press S2 on the tester The LCD will display the following if the test passes HIHAT Passed Note that the test will time out and fail if no activity is detected on the Hihat Control input jack for 5 seconds 16 Version Diags Version This is an informational display not a test Press PLAY to display the boot loader on the LCD BootVers 1 00g 17 Trigger Debug do not use Pressing P...

Страница 12: ...ack to DM8 MIDI IN jack z Play keys on the keyboard You should hear sounds come out of the Main TRS and Headphone audio outputs Appendix B Hihat Control Input Tester 1 TS Plug 2 Normally open momentary push button switches S1 S2 1 100K 1 resistor R1 any wattage Appendix C Trigger Tester 1 TRS Plug 3 Normally open momentary push buttons switches S1 S3 1 100 Ohm 5 resistor 1 4W ...

Страница 13: ...ardware Wizard appears on the computer screen 5 Open the DM8 Serializer Application 6 Select the DM8 MIDI port under the MIDI Interface dropdown menu This port should be called USB Audio Device 7 Hold the PREVIEW button and scan the OLD serial number sticker 8 Look at the DM8 screen and make sure that it displays the serial number from the OLD barcode sticker 9 Press the following buttons in this ...

Страница 14: ...ATE WHEEL FROM TOP PANEL a REMOVE ROTATE WHEEL NUT AND WASHER FROM THE TOP PANEL b REMOVE PLASTIC KNOB FROM THE TOP PANEL Fig1 2 DISASSEMBLE THE BOTTOM PLATE a REMOVE 5 PCS OF NUTS FROM THE BOTTOM PLATE b REMOVE 5 PCS OF SCREWS FROM THE BOTTOM PLATE Fig2 ...

Страница 15: ...MOVE 4 PCS OF NUTS FROM THE CPU PCB ASS Y b REMOVE 4 PCS OF SPRING WASHERS FROM THE CPU PCB ASS Y c REMOVE 4 PCS OF WASHERS FROM THE CPU PCB ASS Y Fig3 4 DISASSEMBLE THE MAIN PCB ASS Y a REMOVE 6 PCS OF SCREWS FROM THE MAIN PCB ASS Y Fig4 ...

Страница 16: ...5 DISASSEMBLE THE LCD PCB ASS Y a REMOVE 2 PCS OF SCREWS AND COVER LCM AT LCD Fig5 ...

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Страница 20: ...N0180164J02 A RESISTOR 4X180 OHM 1 16W 5 ISOLATED C C 0 5MM 3 R4 6 2 TCS106K100A TANT CAP 10UF 10V ROHS 6 C10 24 25 42 49 50 2 TCS107M040B TANT CAP 100UF B CASE LOW ESR ROHS 1 C2 2 TE522540802 CONNECTOR 8PIN 2 54MM DIP 1 J2 2 TE591276001 1 27MM 2 BLOCK MALE CONNECTOR 60P 180DEG SMD 1 J1 2 TRFDS9431A TRANSISTOR FDS9431A 20V 3 5A SOIC 8 ROHS 1 Q1 2 UHPIH6D28 100M INDUCTOR 10UH 1 7A 20 6 7X6 7MM SMD ...

Страница 21: ...J8 2 IC74HC4052PW IC 74HC4052PW TSSOP16 2 U15 19 2 IC74LV574PW IC 74LV574 OCTAL D FF TSSOP 20 1 U9 2 IC74LVC14 IC LOGIC 74LVC14 SOP 14 DR99 1 U13 2 ICLM2738XMY IC LM2738XMY EMSOP 8 1 U5 2 ICLMV431ACM LOGIC IC LMV431ACM 1 24 30V 15MA 1 SOT 23 2 D17 44 2 ICMIC809SU RESET IC 2 93V ROHS 1 U2 2 ICTL072CPWR C TL072CPWR TSSOP 8 DR99 DR345 1 U22 2 ICTL074CPWR IC TL074CPWR TSSOP 14 DR99 10 U3 4 7 8 11 12 1...

Страница 22: ...R14 17 102 110 120 126 138 148 R155 169 259 2 RS97K610F03 CHIP RES 97 6K Ω 1 SMD 0603 4 R78 79 81 89 2 RS9K3110F03 CHIP RES 9 31K 1 SMD 0603 6 R47 48 55 56 69 72 2 SWDC11B2020405 20 PULSE RORARY SWITCH ENCODER 1 ENC1 2 TE102251 2P TERMINAL 1 J9 2 TE961276001 60P 2 BLOCK PIN FEMALE 180DEG 1 27MM DIP 1 J10 2 UH160808T 102Y BEAD 1000Ω 100MHZ 0603 ROHS 17 L1 7 10 17 19 20 2 UHBRI3D15 6R8M INDUCTOR 6 8...

Страница 23: ...DM7 0 25 1 GEALE10 EZDRUMMER LITE CARD 1 1 LAC22ALE107 SERIAL NO LABEL EZDRUMMER LITE 1 1 LAC62ALE241 CODE 39 LABEL LDM7ALE01 0 25 1 LAC67YAH261 LABEL GREEN MARKING 02 03 VERS FOR ROHS D 6MM 0 25 1 LAP67YAH255 NPP LABEL RED MARKING D 10MM 3 1 OPLDM7ALE01 USER MANUAL LDM7 1 1 OPLDM7ALE02 QUICK START USER MANUAL LDM7 1 1 PE150350400BEP PLASTIC BAG 150 350 0 04 W PRINTING 257PCS KG 0 004 1 PLLDM701 P...

Страница 24: ...4 X1 15 X2 16 VDD U15 74HC4052 12 13 14 U16 D TL074 3 2 1 U16 A TL074 5 6 7 U16 B TL074 10 9 8 U16 C TL074 R221 1 00k 1 R255 10K L1 1k 100MHz SP27 SP5 SP4 SP20 TIP RING SLEEVE TOP 1 2 5 6 9 10 J5 A DUAL STEREO R254 10K L2 1k 100MHz SP29 SP8 SP7 SP24 3 2 1 U3 A TL074 10 9 8 U3 C TL074 5 6 7 U7 B TL074 12 13 14 U7 D TL074 TIP RING SLEEVE BOTTOM 3 4 7 8 11 12 13 J5 B DUAL STEREO R30 12 1k 1 R16 47 5k...

Страница 25: ... 47 5k 1 C101 0 33uF R130 75 0k 1 C78 1000pF R128 220 ohm C81 2200pF R92 470K C80 0 15uF 1 2 3 D18 BAV99 R122 10K 1 2 3 D19 BAV99 R135 100 ohm R140 75 0k 1 C107 33pF R111 12 1k 1 R110 47 5k 1 C111 0 33uF R141 75 0k 1 C86 1000pF R137 220 ohm C88 2200pF R101 470K C87 0 15uF 1 2 3 D20 BAV99 R133 10K 1 2 3 D21 BAV99 R142 100 ohm R134 75 0k 1 C108 33pF R256 12 1k 1 R259 47 5k 1 C171 0 33uF R261 75 0k 1...

Страница 26: ...3 R100 75 0k 1 1 2 3 Q17 MBT4403 R112 5 1k R119 68k R115 10K C79 1uF C8 22uF 16V C7 22uF 16V R113 100k Q18 MBT4401 R108 100k R175 0 ohm R114 20K D17 LMV431ACM5 R45 47K R67 47K C67 6 8pF R76 115k 1 R78 97 6k 1 C74 6 8pF R88 115k 1 R75 23 2K 1 R89 97 6k 1 C70 150pF R93 23 2K 1 C68 6 8pF R77 115k 1 R79 97 6k 1 C76 6 8pF R90 115k 1 R73 23 2K 1 R81 97 6k 1 C75 150pF R94 23 2K 1 C57 0 1uF L15 1k 100MHz ...

Страница 27: ... 2 3 Q11 MBT4403 1 2 3 Q12 MBT4403 R44 13 ohm R42 20K R51 220 ohm 1 2 J9 C34 1uF C35 1uF C36 1uF C37 1uF C44 1uF C42 1uF C33 1uF C30 1uF C23 1uF C25 0 1uF TP3 1 GND 2 RST 3 VCC U2 LM809M3 2 93 C24 0 1uF R18 10K 1 2 3 J7 P3 1 2 3 4 5 6 SW1 L9 1k 100MHz 1 5A L8 1k 100MHz 1 5A C6 0 1uF C31 4700uF 25V C48 2200uF 25V C43 0 1uF D3 B140 D4 B140 C21 0 1uF D1 B140 TP1 TP2 C66 0 1uF R245 240 R252 4 7k R246 ...

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