background image

HDW

NYLON WASHER  0.050

5-01-0050

1

3RD STANDOFF ON SINK

HDW

6-32x1/2 STANDOFF

5-02-0003

4

HEATSINK (3), FRONT PANEL

HDW

6-32x1 STANDOFF

5-02-0004

2

INDENTED PCB

HDW

6-32 KEP NUT

5-02-6320

11

PCB, LED PCB (4), FRONT PCB (6)

HDW

ANGLE BRACKET F/P

5-07-0001

3

MAIN

HDW

HEAT SINK

9-03-1022

1

HDW

SOLDER LUG (PCB MNT)

9-03-1036

7

CLIFF JACKS EXCEPT "RECEIVE"

HDW

SWITCH BOOT

9-11-1013

1

HDW

CABLE BRACKET

9-13-1012

1

HDW

RUBBER STRIP 5 IN

9-23-1006

2

LCD TOP/BOT

IC

2N5460  JFET TRANS

2-05-5460

1

Q1

MAIN MOT

IC

7805  +5 V TO220

2-11-7805

1

U42

MAIN NAT ONLY

IC

7812 +12 V TO220

2-11-7812

1

U40

MAIN NAT ONLY

IC

7912 -12 V TO220

2-11-7912

1

U41

MAIN NAT ONLY

IC

74HC138 DEMUX

2-14-0138

1

U35

MAIN TI/NAT

IC

74HC573 3-STATE LATCH

2-14-0573

1

U31

MAIN TI/NAT

IC

74HC574 OCTAL FF

2-14-0574

5

U10,11,36-38

MAIN TI/NAT

IC

74HC00  QUAD 2-IN NAND

2-14-7400

1

U43

MAIN TI/NAT

IC

74HCU04 HEX INVERTER

2-14-7403

1

U34

MAIN TI/NAT

IC

74HC74  DUAL D FF

2-14-7474

1

U33

MAIN TI/NAT

IC

64Kx4   DRAM 100nS

2-16-4464

5

U22,23,24,25,26

MAIN TI/SAM/FUJI/NEC/HYUND

IC

32Kx8   SRAM 120nS

2-17-0257

1

U29

MAIN SONY

 CXK58257AP-12L

IC

27C512  EPROM 200nS

2-19-0512

1

U30  (VER 1.00)

MAIN TI/NAT/SIG

IC

80C31   MPU

2-20-8031

1

U32

MAIN INTEL/SIG

IC

TLO84   QUAD OP AMP

2-21-0084

9

U1,2,6,7,13,15,16,18,39

MAIN TI

IC

SSM2120 DUAL VCA

2-21-2120

1

U4

MAIN SSM

IC

CEM3381 VCA

2-21-3381

1

U12

MAIN CURTISS

IC

LM311   ANALOG COMP

2-22-0311

1

U21

MAIN NAT/TI

IC

LM339   QUAD COMP

2-22-0339

1

U17

MAIN NAT/TI

IC

4051  ANALOG SWITCH

2-23-4051

2

U8,14

MAIN ST/HARRIS/RCA/SIG

IC

4053  ANALOG SWITCH

2-23-4053

4

U3,5,9,19

MAIN ST/HARRIS/RCA/SIG

IC

6N138   OPTO-ISO

2-24-0138

1

U28

MAIN HP

IC

PCM54   DAC

2-25-0054

1

U20

MAIN BURR-BROWN

IC

ZAK 24  ASIC

2-27-0005

1

U22

MAIN AMI

IC

20K LOW PASS FILTER

7-20-0001

1

MAIN

JAC

5 PIN DIN JACK

4-00-0001

2

J11,12

MAIN

JAC

4 PIN DIN JACK (P4)

4-00-0004

1

J15

MAIN

JAC

1/4 CLIFF (MONO)

4-02-0001

8

J2,3,7-10,13,14

MAIN

LCD

LCD MODULE

9-44-1111

1

FRONT PANEL

ME

1N4148  SIGNAL DIODE

2-00-4148

22

D1-19,25-27

MAIN MOT

ME

1N4003  POWER DIODE

2-01-4003

5

Q20-24

MAIN MOT

ME

1N5231B ZENER

2-02-5231

1

Q28

MAIN MOT ONLY

ME

2N4401  NPN TRANS

2-03-4401

6

Q2-7

MAIN MOT/NAT/HARRIS

ME

LED (GRN) T1

3-00-0001

3

POT PCB

POT

ME

LED (RED) T1

3-02-0001

13

POT PCB, KEY PCB

PT,KY

ME

DPDT SWITCH (ALPHA)

6-02-0001

1

S1

MAIN

ME

PIEZO

7-00-0001

1

KEY

GROUP

DESCRIPTION

PART #

QTY

POSITION

PCB

MANUFACTURER

NOTES

ME

24 MHz XTAL

7-01-0006

1

Z1

MAIN

ME

LITHIUM BAT (PANA 3V)

7-05-0003

1

B1

MAIN PANASONIC

QuadraVerb GT Service Manual------

27

Summary of Contents for QuadraVerb GT

Page 1: ...QuadraVerb GT Service Manual Revision 1 00 10 17 95 QuadraVerb GT Service Manual 1...

Page 2: ...ervice 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 ar...

Page 3: ...ON Danger of explosion if battery is incorrectly replaced Replace only with the same type or equivalent type recommended by the equipment manufacturer Battery Manufacturer Tadiran Type TL 5101 Rating...

Page 4: ...ects to fall into any openings of the product 6 Water or Moisture The product should not be used near any water or in moisture 7 Heat Do not place the product near heat sources such as stoves heat reg...

Page 5: ...s current after a significant amount of time 5 Cable Checks Wiggling cables can reveal intermittent failures such as loose cables or poorly soldered headers Remember to check power supply cables as we...

Page 6: ...THIS II WARNINGS III SAFETY SUGGESTIONS IV General Troubleshooting V 1 0 Schematics 7 2 0 Software History 9 3 0 GT MIDI Implementation 10 4 0 GT Service Parts List 26 Service Manual History 30 INDEX...

Page 7: ...1 0 Schematics QuadraVerb GT Service Manual 7...

Page 8: ...QuadraVerb GT Service Manual 8...

Page 9: ...trols 2 Fixes erroneous setting of preamp parameters when a program using the sampling configuration is recalled 3 Fixes distorted audio when a program using the reverb configuration has its reverb ch...

Page 10: ...f bits required to transmit the value of the parameter When the QuadraVerb GT receives this message it will edit the specified parameter to the new value and display it If the function and page select...

Page 11: ...m dump which corresponds to 12 800 bytes of program data The location of each parameter within a program is shown in the next section When the QuadraVerb GT receives a data dump message the display re...

Page 12: ...0 60 HIGH DEC 0 60 LOW DEC 10 0 60 HIGH DEC 0 60 HIGH DEC 0 60 HIGH DEC 0 1 GATE ON 0 60 HIGH DEC 11 0 1 GATE ON 0 1 GATE ON 0 1 GATE ON 0 99 GATE HLD 12 0 99 GATE HLD 0 99 GATE HLD 0 99 GATE HLD 0 9...

Page 13: ...NG PONG 1 0 1 INPUT 0 1 INPUT 0 1 INPUT 2 1 1500 DELAY 1 750 L DELAY 1 750 DELAY 3 0 99 FEEDB 0 99 L FEEDB 0 99 FEEDB 4 1 750 R DELAY 5 0 99 R FEEDB CONFIGURATION 3 5BAND EQ PCH DLY page 0 type 0 MONO...

Page 14: ...2 MIDI TRIG 5 0 127 MIDI LOW LIMIT 6 0 127 BASE NOTE 7 0 127 MIDI HIGH LIMIT PITCH FUNCTION 3 CONFIGURATION 0 EQ PCH DL REVERB 3 5BAND EQ PCH DLY page 0 type 0 M CHORUS 1 S CHORUS 2 M FLANGE 3 S FLANG...

Page 15: ...1 AMP 5 20 255 MID BANDWIDTH 0 60 RES 2 TUNE 6 0 560 MID BOOST CUT 0 99 RES 2 DCY 7 2000 18000 HIGH FREQUENCY 0 99 RES 2 AMP 8 0 560 HIGH BOOST CUT 200 9999 MID FREQUENCY 9 20 255 MID BANDWIDTH 10 0...

Page 16: ...8000 HIGH FREQUENCY 14 0 560 HIGH BOOST CUT Changing preset may change the EQ type to 5 BAND EQ or 5 RESONATOR 3 EQ x is the current resonator number CONFIGURATION 4 3 BAND EQ REVERB page 0 0 6 EQ PRE...

Page 17: ...RECT LEVEL 1 0 99 MASTER FX LEVEL 2 0 99 EQ LEVEL 3 0 99 DELAY LEVEL CONFIGURATION 3 5BAND EQ PCH DLY page 0 0 99 DIRECT LEVEL 1 0 99 MASTER FX LEVEL 2 type 0 PRE EQ 1 POST EQ 3 0 99 PREAMP LEVEL 0 99...

Page 18: ...th DIGIT NAME 9 32 127 10th DIGIT NAME 10 32 127 11th DIGIT NAME 11 32 127 12th DIGIT NAME 12 32 127 13th DIGIT NAME 13 32 127 14th DIGIT NAME 14 0 126 MOD 1 SOURCE 15 0 MOD 1 TARGET 16 0 198 MOD 1 AM...

Page 19: ...MOD 3XH EQ MOD 4XH MIX MOD 5XH MULTI TAP MOD Configuration 3 only 6XH 7XH PREAMP MOD The possible modulation targets within each of the above is as follows REVERB CONFIGURATION 0 1 4 5 6 nothing in 2...

Page 20: ...AP 4 PANNING 5CH TAP 5 PANNING 5DH TAP 6 PANNING 5EH TAP 7 PANNING 5FH TAP 8 PANNING 60H TAP 1 FEEDBACK 61H TAP 2 FEEDBACK 62H TAP 3 FEEDBACK 63H TAP 4 FEEDBACK 64H TAP 5 FEEDBACK 65H TAP 6 FEEDBACK 6...

Page 21: ...RS EQ 30H LOW EQ FREQUENCY RES 1 DECAY 31H LOW EQ BOOST CUT RES 1 AMP 32H MID EQ FREQUENCY RES 2 DECAY 33H MID EQ BANDWIDTH RES 2 AMP 34H MID EQ BOOST CUT MID EQ FREQUENCY 35H HIGH EQ FREQUENCY MID EQ...

Page 22: ...3DH MID EQ BOOST CUT 3EH HIGH EQ FREQUENCY 3FH HIGH EQ BOOST CUT CONFIGURATION 4 3 BAND EQ REVERB Target 30H LOW EQ FREQUENCY 31H LOW EQ BOOST CUT 32H MID EQ FREQUENCY 33H MID EQ BANDWIDTH 34H MID EQ...

Page 23: ...B Target PRE EQ POST EQ 40H DIRECT LEVEL DIRECT LEVEL 41H FX LEVEL FX LEVEL 42H PREAMP LEVEL EQ LEVEL 43H REVERB LEVEL REVERB LEVEL CONFIGURATION 5 RING DL REVERB Target 40H DIRECT LEVEL 41H FX LEVEL...

Page 24: ...ONE 4 0 1 BASS BOOST 5 0 2 CAB SIMULATOR 6 0 1 EFFECT LOOP 7 0 17 NOISE GATE 8 0 99 PREAMP OUTPUT LEVEL CONFIGURATION 7 SAMPLING page 0 0 7 COMPRESSION 1 0 7 OVERDRIVE 2 0 8 DISTORTION 3 0 2 PREAMP TO...

Page 25: ...TAP 5 DELAY MSB 37 REVERB PREDELAY TAP 5 DELAY LSB 38 REVERB PREDELAY MIX TAP 5 VOLUME 39 REVERB DECAY TAP 5 PAN 3A REVERB DIFFUSION TAP 5 FEEDBACK 3B REVERB LOW DECAY TAP 6 DELAY MSB 3C REVERB HIGH...

Page 26: ...N CER 43 PF CERDISC 1 02 0430 8 C78 85 MAIN FIL 1000 PF FILM 1 20 0102 1 C58 MAIN WIMA FIL 0 01 MF FILM 1 20 0103 10 C5 6 9 10 22 23 34 35 48 51 MAIN WIMA FIL 0 1 MF FILM 1 20 0104 3 C73 107 108 MAIN...

Page 27: ...MAIN TI NAT SIG IC 80C31 MPU 2 20 8031 1 U32 MAIN INTEL SIG IC TLO84 QUAD OP AMP 2 21 0084 9 U1 2 6 7 13 15 16 18 39 MAIN TI IC SSM2120 DUAL VCA 2 21 2120 1 U4 MAIN SSM IC CEM3381 VCA 2 21 3381 1 U12...

Page 28: ...R23 29 MAIN RES 1 2K 1 8W 5 0 00 0122 1 R107 MAIN RES 12K 1 8W 5 0 00 0123 3 R27 30 193 MAIN RES 120K 1 8W 5 0 00 0124 1 R104 MAIN RES 1 3K 1 8W 5 0 00 0132 1 R86 MAIN RES 13K 1 8W 5 0 00 0133 2 R116...

Page 29: ...S 56K 1 8W 5 0 00 0563 3 R79 80 91 MAIN RES 620 1 8W 5 0 00 0621 1 R109 MAIN RES 6 2K 1 8W 5 0 00 0623 1 R192 MAIN RES 680 1 8W 5 0 00 0681 1 R121 MAIN RES 6 8K 1 8W 5 0 00 0682 6 R12 49 60 95 115 206...

Page 30: ...Service Manual History 10 17 95 V1 00 First release QuadraVerb GT Service Manual 30...

Page 31: ...27 E EPROM 27 EQ 10 12 13 14 15 16 17 19 20 21 22 23 25 F FEEDBACK 13 20 25 FLANGE 14 20 25 G GT 10 11 26 27 J J15 27 L LCD 27 28 LED 26 27 28 LEZLIE 12 13 14 15 17 20 21 22 25 low pass 27 LSB 10 25 M...

Page 32: ...136 29 R137 29 R61 29 R7 29 R87 29 Resonator 12 14 15 16 18 21 22 23 25 REVERB 9 10 12 13 14 15 16 17 18 19 20 21 22 23 25 RING MOD 17 25 S S1 27 SAMPLE 14 25 SRAM 27 SYSTEM EXCLUSIVE 10 U U1 27 U10 2...

Page 33: ...NOTES QuadraVerb GT Service Manual 33...

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