Alto BETAVERB User manual

Service Manual
www.altoproaudio.com
Version: 1.1
Model: βVERB
24x32 BIT DIGITAL EFFECTS

CONTENTS
1. Specification
2. Block Diagram
3. Schematic Diagram
4. Printed Circuit Board
5. Wiring Diagram
6. Test Procedure
7. Electrical Parts List
8. Exploded Views & Mechanical Parts List
9. Notes

1. SPECIFICATION (BetaVERB)
Analog Input section
Inputs: Analog variable gain, 2 XLR-F electronically balanced
Input Impedance: 44 kOhms
Max. input Level: 15 dBu (4.4V RMS)
Sensitivity: -22 dBu (63mV RMS)
Analog Output section
Outputs: Analog variable gain, 2 XLR-M electronically balanced
Output Impedance <150 Ohms
Max. output level: 17 dBu on 600 Ohms (5.5V RMS)
Digital / Analog Interface
Amplitude Response: 20 Hz - 20 kHz + 0.2 / - 2.5 dB
Signal to Noise Ratio 90 dB (A wtg. / 20 Hz-20kHz)
THD+N 0.03 % @ 1kHz -6 dB (VU-meter level)
Group Delay 700 us
Sampling Frequency 46.875 kHz
Conversion 1 bit Sigma-Delta
Digital
Processor Speed: 12 MIPs
DSP Resolution: 24x32bits
Control: Microprocessor
MIDI Section
Connections: Input/Output/Thru
Sockets 5-poles DIN (female)
Mode Photocoupled
Power Supply
Connector type: 3-pole IEC, grounded
Type: Servo controlled, stabilized
Mains supply: 115V or 230V 50/60 Hz
Power Rating: 9 W
User Interface
numeric LCD Display: 2x20 characters
Keyboard: 7 user keys / 5 LEDs
VU meter: 2x6 LEDs
Physical
Size: Standard 19'' rack mounting
Dimensions (W/H/D): 483mm 44mm 232.5mm (19.32'' 1.76'' 9.3'')
Net Weight: 3.8Kg

12345678
A
B
C D
8
7654321
D
C
B
A
POWERSUPPLY
VOLTAGE REGULATOR
AC115/230V
INPUT
+5VD
+12VA
MEMORY (DRAM)DSP
ED0-ED7
( TMS57002DPHA ) EA0-EA9
AD0-AD7
MPU
( P87C54UBAA ) KEY CONTROL & LED DISPLAY
LCD DISPLAY &
SO0SI0
OUTPUT R OUTPUT L
MIDI IN
INPUT R INPUT L
S1 S2
S3 S4
STEREOAUDIOCODEC
( PCM3001E )
A/D and D/A CONVERTER
Q1
12.000MHZ
CLOCK DIVIDE
( 74HC393 )
12.000MHZ
MIDI
CONTROL
INPUT BUFFER& AMPLIFIER
IN-R IN-L OUT-R OUT-L
INPUTLEVEL INPUTLEVEL
OUTPUTBUFFER & AMPLIFIER
OUTPUTLEVEL OUTPUTLEVEL
LRCKIN=46.875KHZ BCK=1.500MHZ
-12VA
MIDI INTERFACE
MIDITHRU
MIDIOUT
AD0-AD7
INTERFACE
LEDDISPLAY
LCD DISPLAY KEY CONTROL

12345678
A
B C D
8
7654321
D
C B
A
SYPOL 1
BCK0 2
NC 3 NC 4
LRCK0 5
S00 6 S01 7
CAS 8 RAS 9
CLKSEL 10
CLKIN 11
VSS 12 VSS 13
WE 14
ED7 15 ED6 16 ED5 17 ED4 18 ED3 19 ED2 20 ED1 23
NC 21 NC 22
ED0 24
EA0
25 EA1
26 NC
27 EA2
28 NC
29 EA3
30 EA4
31 VSS
32 VCC
33 EA5
34 EA6
35 NC
36 EA7
37 TEST0
38 TEST1
39 TEST2
40
EA8
41 EA9 42 NC 43 NC 44 D0 45 D1 46 D2 47 D3 48 NC 49 D4 50 D5 51 VCC 52 VCC 53 D6 54 D7 55 PC0 56 BI0 57 0VFA 58 0VFM 59 RS 60 NC 61 NC 62 EMPTY 63 MUTE 64
CS 65
R/W 66
PLOAD 67
DREADY 68
CLOAD 69
STRS 70
NC 71
VCC 72
VSS 73
NC 74
BCKI 75
LRCKI 76
NC 77
SI0 78
SI1 79
SYNC 80
U8
TMS57002
VINL
1
VCC1
2AGND1 3VREFL 4VREFR 5VINR 6CINPR 7
CINNR
8CINLN 9CINPL
10 VCOM 11 VOUTR 12 AGND2 13
VCC2
14 VOUTL 15
LRCIN 16 BCKIN 17
DIN 18
DOUT 19
XTI 20
XTO 21
CLKIO 22
VDD 23
DGND 24
FMT2 25 FMT1 26 FMT0 27 RSTB 28
U13
PCM3001E
I/00
1I/01 2WE 3
RAS
4A9 5
A0
9A1
10 A2 11
A3
12 +5V 13 A4 14
A5 15 A6 16 A7 17 A8 18
OE 22
CAS 23
I/02 24 I/03 25
DGND 26
U9 HY534256A I/00
1I/01 2WE 3
RAS
4A9 5
A0
9A1
10 A2 11
A3
12 +5V 13 A4 14
A5 15 A6 16 A7 17 A8 18
OE 22
CAS 23
I/02 24 I/03 25
DGND 26
U10 HY534256A
NC
1
NC
2
A2
3
GND
4SDA 5
SCL 6
NC 7
VCC 8
U1 24LC64
10 11
U4E
74F14D
R48
R49 U14
LM317T(opt)
C31
100nF
C25
100nF
R1
10R
S1
D1
BAS16 R2
1K5
C1
47/16V
C32
47/16V
C24 1uF/50V
8 9
U4D
74F14D
CLK 1
Q0
3
Q1
4
Q2
5Q3 6MR 2
U15A
74HC393 CLK
13 Q0 11
Q1 10 Q2 9 Q3 8
MR
12
U15B
74HC393
C35 1uF C36
1uF
R40
OUTR
LRCKIN
BCK SO0
SI0
RS-CODEC
Q1
12.00MHZ
C21
100nF
C22
22P
+15V
R44 0R0
LRCKIN
R41 0R0
BCK
R35 10R
C29
22P
R43
100K
R42
100K
SGND
ED4 ED5 EA9 EA0 EA1 EA2 EA3
EA4 EA5 EA6 EA7 EA8EA0
EA1 EA2 EA3 EA4
EA5 EA6 EA7 EA8
ED0 ED1 ED2
ED3 ED6
ED7 C41
82pF
EA9
4
5
6
U5B
74HC32D
89
10
U5C 74HC32D
ED0 ED1 ED2 ED3 ED4 ED5 ED6 ED7
Vdasp
SO1 SO0
C42
82pF C26 10uF
C28
10uF
C34
10uF
C37
470P
C38
470P
SGND
C33
10uF
1 2
J4 INL+INR
INR
C27
10uF
C39
1uF/50V C40
100nF
L3
330uH
XTAL
SI0 SI1
C8
100nF
Vdasp
EA0
EA1
EA2
EA3
EA4
EA5
EA6
EA7
EA8 EA9
C6 1uF/50V
C9
100nF
L2 330uH
OVM
OVFA
BIO AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7
+5V
44
P0.0/AD0
43 P0.1/AD1 42 P0.2/AD2 41 P0.3/AD3 40 P0.4/AD4 39 P0.5/AD5 38
P0.6/AD6
37 P0.7/AD7 36
XTAL1
21 XTAL2 20
P2.0/A8 24 P2.1/A9 25
P2.2/A10 26 P2.3/A11 27 P2.4/A12 28 P2.5/A13 29 P2.6/A14 30 P2.7/A15 31
NC3 23
EA/VPP 35
NC4 34
P3.0/RXD
11 P3.1/TXD
13 P3.2/INT0
14 P3.3/INT1
15
P3.4/T0
16 P3.5/T1
17 P3.6/WR
18 P3.7/RD
19 NC2
12
PSEN
32 ALE/PROG
33
RST 10
DGND 22
NC1 1
P1.0 2
P1.1 3
P1.2 4
P1.3 5
P1.4 6
P1.5 7
P1.6 8
P1.7 9
U3
P87C52UBAA
A8 A9 A10 A11 A12 A13 A14 A15
AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7
3 4
U4B
74F14D
A15
P1.4 P1.5 P1.6 P1.7
STRB
R22 0R0 R21
+5V
1
2
3
U5A
74HC32D
A0
10 A1
9A2 8A3 7A4 6A5 5
A6
4A7 3A8
25 A9 24 A10 21
A11
23
A12
2A13
26 A14 27
CE
20
OE
22
VPP
1
O0 11 O1 12 O2 13 O3 15 O4 16 O5 17 O6 18 O7 19
U6A
HT27C512P
AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14
R23
10K(OPT)
+5V
R18
Q8
12 Q7 13 Q6 14 Q5 15 Q4 16 Q3 17 Q2 18 Q1 19 D1 2
D2 3 D3 4 D4 5 D5 6 D6 7 D7 8 D8 9
CLK 11
OC 1
U7A 74HC574D
A0 A1 A2 A3 A4 A5 A6 A7
AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7
RXD TXD
I/O RS
12
U4A
74F14D
+5V
R3 100R R4
100R
5 6
U4C
74F14D
1 2 3 4 5 6 7 8 910
J2 CON10A
C5
100nF C3
1uF/50V
L1
330uH
+5V
R10
R15 R9 R14 R7 R12
R8 R13 R27 R24
+5V
R29
LRCKIN
R16 BCK
R11 11 12
13
U5D 74HC32D
XTAL
SO1
SI1
XTAL
1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 19 20 21 22 23 24
J1 HEADER12X2
1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 19 20
J3
HEADER10X2
RS
P1.4
BIO
OVM
I/O
STRB
21
3
S2
SWSPDT
OVFA
0
10 1 11 2 12 3 13 4
15 2
6
37 4
EI
5EO 15
A0 9 A1 7 A2 6
GS 14
U2A 74HC148
+12V
INR
OUTL
OUTR
INL+INR
+15V
12 J0
-12V
C18
1uF/50V
SGND
R34
R46 0R0
2 3
U11A
SN75188
TXD
14
71
+VCC-VCC
GND
U11E
SN75188
C19
100P
+12V
-12V
C15 C16 C12
P1.7 P1.6 P1.5 P1.4
R17 R31
R19 R32
R36 R47
R45 0R0
1 3 2
U12A
SN75189
RXD
147
U12E
SN75189 C20
100P
+5V
2010
U7B
74HC574D
2814
U6B
HT27C512P
147
U4G
74F14D
147
U5E
74HC32D
R38
330R
R39
1K
D2
BAS16
D3
BAS16
C30
47/50V
Vdasp
R20
10R R25
10R
R26
10R
R33
10R
C11
100nF C10
100nF
C7
100nF C17
100nF
147
U15C
74HC393
R37
10R
C23
100nF
168
U2B
74HC148
R6
10R C4
100nF
R5
10R
C2
100nF
RS-CODEC
R30 10R
R28 10R
+5V+5V C14
100nF
C13
100nF
1213
U4F
74F14D
/RD
2
1 3
S3
SWSPDT
/RD A14
(Copyright S.E.E.D. S.R.L.)
OUTL
1 2
JP1
SGND
+5V
+5V
+5V
+5V
+5V +5V
+5V
AD0
AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8
A15
R50
4K7
R51 470R
L4
0R0
L5
0R0
L6 0R0
L7
0R0 MK3.1.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
20-May-2002 KEVIN LIN.
11of
DP BOARD [MK3.1] V2.1
A3

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A B C D
8
7654321
D
C B A
R59
330R
R58 330R R57 330R R56 330R R48 330R R49 330R R50 330R R51 330R R52 330R R53
330R
R54 330R R55 330R
D14 LED D15 LED D16 LED D17 LED D6 LED D7 LED D8 LED D9 LED D10 LED D11 LED D12 LED D13 LED
DGND
1 2 3 4 5 6 7 8 9 10 11 12 13 14
J4
IDC14
( LCD CONNECTOR )
RS_LCD
C32
100nF
R36
DGND
Q8 12 Q7 13 Q6 14 Q5 15 Q4 16 Q3 17 Q2 18 Q1 19
D1
2D2 3D3 4D4 5D5 6D6 7D7 8D8 9
CLK
11 OC
1
U7A 74HC574D
Q8 12 Q7 13 Q6 14 Q5 15 Q4 16 Q3 17 Q2 18 Q1 19
D1
2D2 3D3 4D4 5D5 6D6 7D7 8D8 9
CLK
11 OC
1
U8A 74HC574D
R37 10K
R38
10K
R39
10K
R40 10K
R41
10K
R42
10K
R43 10K
S2 S3 S4 S5 S6 S7 S8
DGND
DGND
+5VD
11
12 13
U9D
74HC32D
1 23
U9A 74HC32D
8
9
10
U9C
74HC32D
4 56
U9B
74HC32D
5 6
U10C
74HC04D
3 4
U10B
74HC04D
AD0 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD1 AD2 AD3 AD4 AD5 AD6 AD7
+5VD
AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7
89
U10D
74HC04D
1011
U10E
74HC04D
1213
U10F
74HC04D
E_LCD
1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 19 20 21 22 23 24
J3
IDC24
+5VD
AD0
AD1 AD2 AD3 AD4 AD5 AD6 AD7
RS_LCD
( TO J1 OF MK3.1)
3 21
U1A
TL074
R1 1K VR1A
A10K_LOG
AGND C1
47uF/25V
IN2
5 67
U1B
TL074
R2 1K VR1B
A10K_LOG
AGND
( VR1 : INPUT Volumn Control)
C3
47uF/25V
IN1
3 21
U2A
TL074
12 13 14
U2D
TL074
R13
82K5
R15
82K5
R14
220K
AGND AGND
OUTPUT2 OUTPUT1
C13
12pF
VR2A
A50K_LOG
VR2B
A50K_LOG
AGND
R16
220K
C14
12pF
AGND
1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 19 20
J2
IDC20
RXDM
TXD
AGNDDGND
+8VD ( TO COUPLES WITH J2 ON MK3 )
INPUT2 INPUT1
OUTPUT2 OUTPUT1
411
U1E
TL074
C7
100nF
C8
100nF
+12VA
-12VAAGND
2010
U8B
74HC574
2010
U7B
74HC574
C40
100nF C41
100nF
DGND
+5VD
147
U10G
74HC04D
147
U9E
74HC32D
C42
100nF C43
100nF
R3
P1
( TO LCD B/L )
R44
330R
R45 330R R46 330R R47 330R
D2 LED D3 LED D4 LED D5 LED
1 2 3
J5
3P-2.5
AGND
( Analog stage connecter )
OUT1 OUT2
IN2 IN1
+12VA
-12VA
RXDM
TXD
1 2 3 4 5 6
J6
6P-2.5
DGND
( Digital stage conneter )
+5VD
ALTO GROUP2 DIGITAL STAGE
ALTO GROUP2 ANALOG STAGE
INPUT2 INPUT1
OUT2 OUT1
1 2 3 4 5 6 7 8 J7
SIP8-2.5
1 2 3 4 5 6 7 8
J8
SIP8-2.5
C2
10uF/16V
R18 10K
R19
330R
G2FP1-LINK G2FP1-LINK.SCH
DL2 DL3 DL4 DL5 DL6 DL7 DL8 DL9 DL10 DL11 DL12 DL13 DL14 DL15 DL16 DL17
UP
DOWN
ENTER
ESC EDIT UTIL
BYPASS
(EDIT)
(UTIL)
(BYPASS)
(AGC ON)
R60
330R D1
LED
+5VD
(OVM LED)
JP3 0R0
+5VD
R4
220R
+5VD
P2
(PWR-ONLED)
1 2
J1
2P-2.5
C4
200uF
R5
10K 2002,3,19 MOD. C4,R5
G2FP1.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
20-May-2002 KEVIN LIN.
bVERB KEYBOARD / DISPLAY
11of
Group2 bVERB VER020425
A3
1
2
3
VR3A B1K
4
5
6
VR3B B1K
C5
47uF/25V
C6
47uF/25V
R6
2K2 10
98
U1C
TL074CD
C23
680P
AGND
R7
2K2 12
13 14
U1D
TL074CD
C24
680P
AGND
5 67
U2B
TL074CD
10
98
U2C
TL074CD
1 2 3
J10 3P-2.5
AGND
1 2 3
J9 3P-2.5
AGND
AGND
411
U2E
TL074
C9
100nF
C10
100nF
+12VA
-12VAAGND
R8
0R0
R9
0R0
R10
0R0
R11
0R0
bVERB
VR3 CONTROL30 TERMINATORALTOCOMP
R8 R9 R10 R11 R6 R7 C23 C24
X X
X X X X
X X X X
X X X X
X X XX
X
X X X
O O
O O
O O
O O O O O O O
X
C5 C6 X
XX
XX
X
O O

1 2 34
A B C D
4
321
D
C B A
5
67
U3B
TL072CN
R3
22K
R4
22K
R12 22K
R5
22K
AGND
C9
47uF/25V
C10
47uF/25V
L1
LF22uH
L2
LF22uH
3
21
U3A
TL072CN
R8
22K
R7
22K
R11
22K
R6
22K
C11
47uF/25V
C12
47uF/25V
AGND
L3
LF22uH
L4
LF22uH
INPUT2 INPUT1
2
1
3
4
S2
BAL-FEMALE
2
1
3
4
S1
BAL-FEMALE
AGND2
AGND2 5
67
U2B
TL074CN
5
67
U1B
TL074CN
10
98
U1C
TL074CN
10
98
U2C
TL074CN
AGND
AGND
R20 47K
R21 47K
R22 47K
R23 47K
12
13 14
U1D
TL074CN
12
13 14
U2D
TL074CN
C26
100uF/25V
C27
100uF/25V
C28
100uF/25V
C29
100uF/25V
R24 4K7
R25 4K7
R26 4K7
R27 4K7
AGND
AGND
AGND
AGND
L5
LF22uH
L6
LF22uH
L7
LF22uH
L8
LF22uH
2
1
3
4
S4
BAL-MALE
2
1
3
4
S3
BAL-MALE
AGND2
AGND2
1
2
4
5
3
CN1
MIDI IN
1
2
4
5
3
CN2
MIDI OUT
1
2
4
5
3
CN3
MIDI THRU
DGND
R31
220R +5VD
R35
220R
11 12
13
U6D
74HC08
TXD
89
10
U6C
74HC08
R34
220R
D1
1N4148 6
4
1
2
5
ISO1 H11L1(QTC)
R33
220R +5VD
RXDM
R30
220R
R32
220R
+5VD
4
11
U1E
TL074CN
4
11
U2E
TL074CN
C5
100nF
C6
100nF
C30
100nF
C31
100nF
AGND AGND
+12VA
-12VA
1
2
3
4
5
J3
5P-3.9
C37
1000/25V
C44
1000/25V
AGND
C41
100nF
C42
100nF
C14
1000/16V
C16
100pF
C18
2200UF/16V
L9
LF22uH
L13
LF22uH
1
2
JP3 J10MM
( CONNECT IN A STAR THE GNDS )
L12
LF22uH
DGND
+12VA
+5VD
-12VA
OUTPUT2
OUTPUT1
1
2
3
J1
3P-2.5
RXDM
TXD
DGND
AGND
14
7
U6E
74HC08
DGND
+5VD C19
100nF
GND CONNECT
AC11V GND AC11V
(OUTPUT1)
(OUTPUT2)
( Analog stage connecter )
+12VA
-12VA 1
2
3
4
5
6
J2
6P-2.5
DGND
( Digital stage conneter )
+5VD
C1
100nF
C3
100nF
TP1 ST-GND
STARTHEGNDS
C15
100pF
C13
100nF C17
100pF
U13
7812
U11 7912
C7
100nF
C8
100nF
U12
7805
C20
1000/16V
C21
1000/16V
D4
1N4002
D3
1N4002
D2
1N4002
D5
1N4002
C23
22P
C22
22P
LINK MK31PU2LINK.SCH
JR15
G2PU1.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
5-May-2002 KEVIN LIN.
MK3.1-EXTENSION ( IN/OUT & POWER )
11of
ALTO GROUP2(CONTROL30) VER020425
A4
L14
330uH
U10
7808
C25
100nF
C24
47/25V
8
4
U3C
TL072CN
C45
100nF
C46
100nF
AGND
+12VA
-12VA
1
2
3
SW1 SW SLIDE-A STEREO->
<-MONO (FOR CONTROL30,
BetaVERB,ALTOCOMP)
1
2
3
J4
3P-2.5
AGND
1
2
3
J5
3P-2.5
AGND
(MONO IN)
**OUT-L **OUT-R
D6
1N4002 (OPT)
(OPT)
VR1 B500R
VR2 B500R
DGND

MK31 PCB LAYOUT
TOP SOLDER MASK
BOTTOM SOLDER MASKBOTTOM LAYER
TOP LAYER

TOP SILKSCREEN
DRILL DRAWING
---------------------------------------------------------------------------
NCDrill File Report For: MK31-EMI.PCB
---------------------------------------------------------------------------
Layer Pair : TopLayer to BottomLayer
ASCII File : NCDrillOutput.TXT
EIA File : NCDrillOutput.DRL
Tool HoleSize HoleCountPlated
---------------------------------------------------------------------------
T1 20mil(0.50mm) 328
T2 24mil(0.60mm) 2
T3 31mil(0.80mm) 64
T4 36mil(0.90mm) 69
T5 138mil(3.50mm) 6 NPTH
---------------------------------------------------------------------------
Totals 469

MK31
排片方式

MK31-FDKB PCB LAYOUT
TOP SILKSCREEN
DRILL DRAWING
BOTTOM SOLDER MASK
BOTTOM LAYER
TOP LAYER & TOP SOLDER MASK
Tool HoleSize HoleCountPlated
---------------------------------------------------------------------------
T1 39mil(1.00mm) 36
T2 98mil(2.50mm) 14 NPTH
T3 126mil(3.20mm) 3 NPTH
---------------------------------------------------------------------------
Totals 53

Bottom Layer
To
p
La
y
e
r
Top Solder Mask
Bottom Solder

Drill Drawing
Top Overlay
---------------------------------------------------------------------------
NCDrill File Report For: G2FP1.PCB 13-May-2002
--------------------------------------------------------------------------
Layer Pair : TopLayer to BottomLayer
ASCII File : NCDrillOutput.TXT
EIA File : NCDrillOutput.DRL
Tool Hole Size Hole Count Plated
---------------------------------------------------------------------------
T1 24mil(0.60mm) 145
T2 31mil(0.80mm) 98
T3 35mil(0.90mm) 35
T4 39mil(1.00mm) 42
T5 87mil(2.20mm) 6
T6 118mil(3.00mm) 3
T7 138mil (3.50mm) 12 NPTH
---------------------------------------------------------------------------
Totals 341

--------------------------------------------------------------------------- NCDrill File Report For: G2PU1.PCB 5-May-2002 --------------------------------------------------------------------------- Layer Pair : TopLayer to BottomLayer ASCII File : NCDrillOutput.TXT EIA File : NCDrillOutput.DRL Tool Hole Size Hole Count Plated --------------------------------------------------------------------------- T1 31mil(0.80mm) 240 T2 39mil(1.00mm) 43 T3 47mil(1.20mm) 8 T4 55mil(1.40mm) 21 T5 59mil(1.50mm) 2 T6 63mil(1.60mm) 21 T7 150mil(3.80mm) 5 --------------------------------------------------------------------------- Totals 340