Alto DJM-4 Service Manual

Service Manual

Model: DJM-4 (3-CHANNEL VCA-CONTROLLED DJ MIXIER)

www.altoproaudio.com

Version: 1.1

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

Technical Specifications

Model NO: DJM-4( 3-CHANNEL MIXER )

AUDIO INPUTS

Mic Input 40dB gain,servo-balanced
Phono Inputs 1 ,2 and 3 40dB gain@1kHz,unbalanced
Line Inputs 1,2 and 3 0dB gain, unbalanced
Return 0dB gain, unbalanced

AUDIO OUTPUTS

Main Out max +21dBu
Booth Out max +21dBu
Tape Out typically 0dBu
Send
Headphones typically 125mW@ 1% THD

EQUALIZER(+/-8dB)

Stereo Bass +15dB/-30dB@50Hz
Stereo Middle +15dB/-30dB@2.5KHz
Stereo Treble +15dB/-30dB@10KHz

Kill Bass -54dB@50Hz
Kill Middle -40dB@1KHz
Kill Treble -26dB@10KHz

GENERAL

Signal-to-Noise ratio(S/N) >90dB(LINE)

Crosstalk 70 dB±3dB(LINE)

Distortion(THD) <0.05%

Frequency Response 20Hz-20KHz (±2dB)

Input Gain Adjustment -20dB-+9dB (+3dB)

typically 0dBu

POWER SUPPLY

Main voltage USA/Canada100-120V~, 60Hz

Europe 210-230V~, 50Hz

U.K./Australia 240V~, 50Hz
Power Consumption 25watts
Fuse 95-120V~ : T500mAL

210-240V~ : T315mAL
Main connection Standard IEC receptacle

DIMENSIONS AND WEIGHT

Dimension 281(L)X220 (W)X76.6(H)mm(11.3”X9.8”X3.0”)
weight 3.5Kg (7.71lb)

A

V030731

11of

TASY J S

RevisionModel No

Drawn By

Sheet

4d

2b

PFL LEVELPFL MODE

DJM-4

2-Aug-2003

Djm-4 DIGRAM Sch

DJM-4 BLOCK DIGRAM

A3

Titel

Size

File

Date

R

GAIN

B

SEND FROM PFL

(EFFECTS)

L

R

3c5e1a

PHONES OUT

PFL MIX

D

8

TYPE

(EFFECTS)

RETURN TO MAIN

7654321

R

L

(MAIN OUT)

L

C

AMP

R

(MAIN OUT)

L

GAIN

R

GAIN

MOOTH

(MAIN OUT)

L

GAIN

(PFL) ( MAIN)

MIC INPUT

3ce1a

4d

2b

HI

LO MID

P

C

A

123

A

3-BAND EQ

8

9

123

LINE

PHONO

Voltage Controlled Amplifier

HI

GAIN

0

D

P

B

6

456

B

3-BAND EQ

11

5

LO MID

GAIN

7

PHONO

HI

LO MID

C

A

123

A

9

P

123

12

P

4

P

LINE

8

PHONO

3-BAND EQ

7

LINE

HI

LO MID

GAIN

GAIN

D

P

B

B

3-BAND EQ

0

11

5

6

456

PHONO

HI

LO MID

12

P

PHONE / LINE

4

P

C

A

123

A

9

P

123

LINE

8

PHONO

3-BAND EQ

7

LINE

HI

LO MID

GAIN

GAIN

0

D

P

B

6

456

B

3-BAND EQ

11

12

4

5

LINE

PHONO

LEVEL METER

P

TEMPO DIFFERENCE

TIME OFFSET

PHONE / LINE

BPM

SN8P1707Q

P

CHANNEL 1(INPUT)

PHONO LINE

L

123

A

CHANNEL 2(INPUT)

R

456

B

LINE

PHONO

D

PHONO

PHONO LINE

L

P

LINE

R

C

CHANNEL 3(INPUT)

PHONO LINE

L

R

1 2 3 4 5 6 78

B

A

7654321

8

C43

C37

220P

IC1B

TL074

220P

IC1A

TL074

IC2B

TL074

IC2A

TL074

C38

C39

220P

C2

0uF/25V

7

C8

10uF/25V

C7

0uF/25V

7

R310
100K

R311
100K

C9

10uF/25V

150n

C47
150n

R28

1K5

R36

1K5

R35

1K5

R37

1K5

R55

2K49

2K49

R54

2K49

2K49

R69
33K

R63

2

VR2A
50KE

VR3A
50KE

VR4A
50KE

VR2B
50KE

VR3B
50KE

VR4B

50KE

VR6A
50KE

VR7A
50KE

VR8A
50KE

VR6B
50KE

VR7B
50KE

VR8B

50KE

33k

2

C55
10n

2

R64

5

33k

C63
10n

5

5

R70

2

33k

C62

2

10n

2

R72

5

33k

5

C64
10n

5

R29

1K5

3

LOW

MID

1

R62
33K

R50

HIGH

3

C44
150n

R30
1K5

6

LOW
MID

4

R68

33K

HIGH

6

R38

1K5

3

LOW

MID

1

R67
33K

R53

HIGH

3

C48
150n

R40
1K5

6

LOW
MID

4

HIGH

6

CHANNEL 1

R27

VR5A
10KC

1

3

GAIN

4

6

1

3

GAIN

4

6

1K5

2

6

5

R26
1K5

5

2
3

R34
1K5

C40
220P

2

6

5

Ch1 Music

R33
1K5

5

2

3

D

MIC IN

PHONO L3

PHONO R3

C

C1

10uF/25V

R1
47K

PHONE/ LINE

SW1A

2

3

SW1B

6

5
4

R153
100R

CHANNEL 2

SW

P

SW1C

P

SW1D

P

R154
100R

VR1A
10KC

R24
2K49

9
8

7

10

VR1B
10KC

11
12

R25

2K49

P1

SW

CN2
14PIN

LINE R1

1

LINE L1

2
3

PHONO R1

4

PHONO L1

5
6

LINE R2

7

LINE L2

8
9

PHONO R2

10

PHONO L2

11
12
13

PHONO R3

14

PHONO L3

B

PHONE/ LINE

SW2A

SW2C

2

3

SW2B

SW2D

P

6

5
4

P

9

R51

8

2K49

7

10

VR5B
10KC

11
12

P

R52
2K49

C45
150n

1

3

1

C46
150n

4

6

4

C50
150n

1

3

1

C51
150n

4

6

4

R82
8K06

8K06

R83
8K06

R85
8K06

R114

C80

4k7

5n6

R65

R32

1K5

R88

13

3K3

12

C73

6n8

R106
18K

R115

C79

4k7

R31
1K5

R92

R84

R91

R41
1K5

R93

9

3K3

10

C75

6n8

R108
18K

R124

4k7

R42

1K5

13

3K3

12

C74

6n8

R107
18K

R126

C81

4k7

9

3K3

10

C76

6n8

R109
18K

33k

C85
56p

14

PHONE/LINE OUT L3

IC1D

TL074

5n6

C86
56p

IC1C

TL074

C82
5n6

C87
56p

IC2D
TL074

5n6

C88
56p

IC2C

TL074

R66
33k

8

R73
33k

14

R74
33k

8

C3

R89

10uF/25V

3K3

SW4A

1

2
3

PHONE/LINE OUT R3

C10
10uF/25V

R94
3K3

SW4B

4
5

6

P

PHONE/LINE OUT L1

PHONE/LINE OUT R1

C11
10uF/25V

R95
3K3

SW5A

1
2

3

R90
3K3

+15V

R144
1K

GRN

LD1

R391
4K7

+15V

IC30C

4580

-15V

C244
47P

7

IC30B
4580

C246

47P

1

IC30A
4580

84

C245

10uF/25V

C247

10uF/25V

C248
104P

C249
104P

PHONES(L)

PHONES(R)

R96

3K3

C13

10uF/25V

R99

R98

3K3

3K3

SW5B

4
5

6

P

R97

3K3

GRN

LD2

+15V

R155
1K

6
5

R392

4K7

2

3

D

C

B

R125

2

VR10A
50KE

VR11A
50KE

2

VR12A
50KE

2

5

VR10B
50KE

VR11B
50KE

5

VR12B
50KE

5

C52
150n

R71

33k

R43

1K5

1

R100

3K3

3

R86

C66

8K06

10n

1

C54
150n

R78

33k

R49

1K5

4

R101
3K3

6

C67

R87
8K06

10n

4

C49
150n

CHANNEL 3

R44
1K5

R56
2K49

VR9A
10KC

VR9B
10KC

R57
2K49

1

3

GAIN

4

6

2

6
5

Ch2 Music

5

2

3

R45
1K5

IC3B

TL074

C42
220P

IC3A

TL074

C41
220P

SW

PHONE/ LINE

SW3A

SW3C

P

9

2
3

SW3B

A

1 2 3 4 5 6 78

6

5
4

8
7

SW3D

P

10

11
12

P

R46
1K5

C16

0uF/25V

7

R313
100K

R312
100K

1
C17

10uF/25V

R39

1K5

3

LOW

MID

1

R77
33K

R59

2K49

HIGH

3

C53
150n

R48
1K5

6

LOW

R47
1K5

MID

4

R76

33K

HIGH

6

R58

2K49

C83

4k7

5n6

R75
33k

C89

56p
13
12

C77

6n8

R139
4k7

R111
18K

R112
18K

IC3D
TL074

C84
5n6

C90

56p

9

10
C78

IC3C

6n8

TL074

14

R79
33k

8

PHONE/LINE OUT L2

PHONE/LINE OUT R2

C18
10uF/25V

R102
3K3

SW7A

1

2
3

3K3

R103

C14
10uF/25V

SW7B

P

4

5
6

R104
3K3

R105
3K3

GRN

LD4

+15V

R158
1K

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Date:
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A3

DJM4-PRE(INPUT&EQ)

DJM-4

2-Aug-2003
DJM4-PRE.S01

Sheet
Drawn By:

RevisionModel No:

VER030802

J.S. TASY

A

41of

87654321

+15V

R198
511R

PFL MODE

SW8A

SW8B

P

R169

1K

R22

47K

R204
30K

2
3
4
5
6
7
8

R206
7K5

C4

10uF/25V

C34
10uF/25V

R23
47K

C35
10uF/25V

MODE1V+
I IN1
I C1
I OUT1
I OUT2
V C2
I IN2
GND

SSM2164

R156
1K

1
2
3

VR19A
50KB

4
5
6

VR19B
50KBA

R171
18K

R170

1K

IC18

I IN4

V C4
I OUT4
I OUT3

V C3

I IN3

V-

R145
1K

3

2

PFL LEVEL

1

6

5

PFL LEVEL

4

Titel
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A3

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File:

+15V

16
15
14
13
12
11
10
9

-15V

R207
7K5

C15

10uF/25V

R60

2K49

C203

47uF/25V

C20

10uF/25V

R61
2K49

C208

47uF/25V

C36

10uF/25V

R389
27K

R390

R387
27K

R388

PHONES(L)PHONES(R)

DJM4-PRE(PFL&MIX)

DJM-4 1.0

17-Apr-2003
DJM4-PRE S02

R199
511R

R157
1K

C97
560P

D

R148
1K

13
12

9

10

R314
100K

R315
100K

R349
12K

C243

10uF/25V

C242

10uF/25V

PHONE/LINE OUT L3

PHONE/LINE OUT R3

C188
20P

14

IC14D
TL074

R350
12K

C194
20P

8

IC14C
TL074

MAIN R

MAIN L

R352
47R

R351
47R

R353
47R

R354
47R

C

PHONES OUT L

PHONES OUT R

B

A

RevisionModel No:

Sheet
Drawn By:

42 of

J S TASY

SW6D
SW PS-42E85L

10
11
12

D

C

B

A

P

-15V

SW6C
SW PS-42E85L

7
8
9

P

+15V

411

C220
100n

C221
100n

+15V

R174

SW6B

2K2

+15V

-15V

SGND

LD3
GRN

SW PS-42E85L

P

PHONES OUT R
PHONES OUT L

SHARP

SMOOTH

SEND L
SEND R

-15V

AMP L
AMP R

1
2

3

MIC IN

1 2 3 4 5 6 7 8

CN4
16PIN

CN3

10

10PIN

10
11
12
13
14
15
16

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

IC1E
TL074

-15V

SW6A
SW PS-42E85L

MIC IN

PHONES OUT R
PHONES OUT L

SHARP
SMOOTH

RETURN L
RETURN R

TAPE L
TAPE R

BOOTH L
BOOTH R

411

IC2E
TL074

4
5

6

+15VVDD

P1

MIC OUT R

MIC OUT L

C222
100n

C223
100n

R369
100K

R370
100K

+15V

BAT54 ( FM103 )

R290
10K

TR15
J112

TR16

J112

411

IC3E
TL074

R3
47K

D17

0.47u/50V

C198

R338
100R

R367

1K

R379
47K

R368

1K

R380
47K

C154
100n

C155
100n

R138
4K7

R371

2

3

R339
560K

62K

13
12

2

3

R372

C227

47P

IC10E
TL074

R340
1M2

IC11A
TL074

C23

10uF/25V

R213

27K

C24

10uF/25V

R212
27K

62K

IC27D
TL074

411

C226
47P

IC27A
TL074

R214
27K

R215
27K

D2

4148

1

14

C228

10uF/25V

C229

10uF/25V

C156
100n

C157
100n

C199
10u/25V

R175
2K2

R176
2K2

84

IC15C
4580

MIC OUT L

MIC OUT R

VR15
100KB

4 8

-15V

R365
1K

R364
1K

411

IC11E
TL074

VR16
50KB

MAIN OUT
TALK

-15V
3

VR14
100KB

1

4 8

R2

L2

C158
100n

C159
100n

R180

2

1M

6

7

2

3

411

C94
27n

R187
200K

R10
47K

SHARP

D3

4148

C11B

TL074

C160
100n

C161
100n

7

R196
8K2

IC12E
TL074

R291
10K

R341
150K

R184
51K1

5
6

5

SW10

1

SOFT MID SHARP SOFT MID SHARP

CH1 CURVE

MIC OUT RMIC OUT L

2
3

2
3

IC12A

TL074

R217

39K

TL074

IC13A

10uF/25V

R216
39K

C25

C216
150P

C215
150P

MAIN RMAIN L

1

C20

10u/25V

1

R194
8K2

R295
10K

R296
10K

R297

10K

R298

10K

R195
8K2

6

IC12B

5

R299
10K

IC16A

3
2

4580

6

IC13B

5

R301

R300

TL074

R302
10K

10K

10K

TL074

R303

10K

C91

56P

C92
56P

10uF/25V

7

1

7

C26

10uF/25V

C27

R375

6

10K

5

R234

20K

6
5

R235

20K

C153
100n

SURROUND

R378

33K

2

R377

3

10K

OUT A LEVEL

R360
1K

R361
1K

D4

4148

C162
100n

C163
100n

3

1

IC16C
4580

R342
150K

10

R181

2

9

1M

5

6

7

1

2

3

CH2 CURVE

R376

33K

10uF/25V

C234

IC28B

56P

4580

OUT A LEVEL

R236

C217

20K

220uF/6.3V
7

IC16B
4580

10uF/25V

C236

56P

1

IC28A

VR20B

4580

10KA

84

R292
10K

R185

51K1

SW1

C235

7

VR20A
10KA C28

3

VR22

1KA

1

C237

6

4

R362
100K

R363
100K

C164
100n

C165
100n

C95

27n

R188
200K

R11
47K

R383
1K

10uF/25V

SW13A

2

SURROUND

R384
1K

5

C29

10uF/25V

SMOOTH

8

C11C

TL074

R2

R355
22K

L2

R356
22K

3

2
1

TR17
J112

TR18
J112

R197
8K2

411

IC13E
TL074

C98
560P

10

10

9

9

R381
47K

R382
47K

C224
100n

C225
100n

R208

R200

6K81

511R

R9

47K

C189
20P

IC12C

TL074

SW13B

P

SURROUND

R8
47K

C190
20P

IC13C

TL074

IC14E
TL074

+15V

R201
511R

C99
560P

Right Mete

C205

47uF/25V

8

+15V

R177
2K2

4

5
6

( SURROUND ON)

BAL A

C204

47uF/25V

8

VR18B

20KB

Left Meter

R178
2K2

411

R205
30K

2
3
4
5
6
7
8

R209
6K81

R359
1K2

3

VR18A
20KB

1

LD5
GRN

4

R360
1K2

6

C209
47uF/25V

C210
47uF/25V

IC17

MODE1V+
I IN1
I C1
I OUT1
I OUT2
V C2
I IN2
GND

SSM2164

R210

R202

6K81

511R

BAL A

2

5

I IN4

V C4
I OUT4
I OUT3

V C3

I IN3

C100
560P

C30

10uF/25V

C31

10uF/25V

V-

VR21A
10KA C32

VR21B
10KA C33

84

IC28C
4580

+15V

16
15
14
13
12
11
10
9

-15V

R211

R203

6K81

511R

C101
560P

OUT (L1)

OUT (L2)
OUT (R1)
OUT (R2)

3

OUT B LEVEL

2

10uF/25V

1

6

OUT B LEVEL

5

10uF/25V

4

C240
100n

C241
100n

R159
1K

R160
1K

R357
22K

R358
22K

13
12

13

12

R173
2K2

MIC OUT R

MIC OUT L

R12
33K

C191
20P

IC12D

TL074

R13
33K

C192
20P

IC13D

TL074

-15V
3

12

R179

2

VR13
100KB

4 8

13

1M

1

5

6

7

1

2

3

SOFT MID SHARP

CH3 CURVE

SEND L

R80
33K

R4
47K

PFL MIX

1

SEND R

R81
33K

R16
47K

PFL MIX

6

C206

BOOTH RBOOTH L

14

47uF/25V R14

47K

C207
14

47uF/25V R15

47K

R183
51K1

SW9

6
5

VR17A

2

2
3

VR17B

5

20KB

20KB

R343
180K

C187

20P

R344
180K

C193

20P

IC14B

C93
27n

R186
200K

R2
47K

R5
47K

R17
47K

TL074

3

IC14A

TL074

4

IC11D
TL074

14

R6
47K

R18
47K

R20

47K

R19
47K

C200

10u/25V

7

C202

10u/25V

1

R189
8K2

R21
47K

C96
560P

R7
47K

R168
18K

D

C

PHONE/LINE OUT L1

R165
1K

10uF/25V

R167
1K

NO KILL(L1)

87654321

C65

10N

IC6C
TL074

IC5C

TL074

IC5D
TL074

KILL LO(L1)

8

R230

20K

KILL LO,MID(L1)

8

14

R254
37K4

C134
4N7

R232
20K

R233
20K

R282
15K8

R293
10K

13
12

6
5

C176
1N

100P

C181

IC6D
TL074

R294

IC5B
TL074

10K

14

7
KILL MID(L1)

R130
4K7

IC21
4051

KILL LO MID(L1)

KILL LO(L1)
OUT (L1)
NO KILL(L1)
KILL MID(L1)

R134
4K7

IC22
4051

KILL LO,MID(L2)

KILL LO(L2)
OUT (L2)
NO KILL(L2)
KILL MID(L2)

+15V

R131
4K7

16

1

+15V

R135
4K7

16

1

14

15

2

3

KILL LO HI(L2)

15

2

R267
4K22

C115

47N

C133

4N7

C148
100N

R259
15K

R263
3K48

R281
15K8

9

10

R271
42K2

2
3

IC5A
TL074

R275

34K

9

10

C69
10N

C68

10N

13
12

C175
1N

C21

C104

39N

R228

20K

C132
4N7

R229

20K

C108
3N9

R308

3K74

R247
8K45

R243
6K81

C120

R253

37K4

C114
47N

22N

C124

2N2

KILL LO,HI(L1)

KILL MID,HI(L1)
KILL HI(L1)

12

13

4

5

KILL MID,HI(L2)

13

14

3

4

HI1

11

6

HI2

KILL HI(L2)

11

12

5

6

MID1

10

7

R132
4K7

MID2

10

7

R136
4K7

LO1

8 9

LO2

8 9

R133
4K7

R137
4K7

-15V

-15V

R166
1K

R172
1K

PHONE/LINE OUT L2

NO KILL(L2)

C22

10uF/25V

C105

39N

R237

20K

C135
4N7

R238

20K

C109

3N9

R309
3K74

R244
6K81

R248
8K45

R256

C117
47N

C121

22N

37K4

C125

2N2

C116

47N

C136

4N7

C166
100N

R260
15K

R268
4K22

R264
3K48

R284

15K8

C70

10N

IC9C
TL074

IC8A
TL074

IC8C
TL074

IC8D
TL074

KILL LO(L2)

8

1

8

14

KILL HI (L2)

9

10

R272
42K2

2
3

R276

34K

9

10

C72
10N

C71

10N

13
12

C177
1N

R231

20K

C137
4N7

KILL LO MID(L2)

R239
20K

KILL MID HI(L2)

R255
37K4

R240
20K

R283
15K8

10K

R304

13
12

6
5

C178
1N

C182

100P

IC9D
TL074

R305

10K

IC8B
TL074

14

KILL LO HI(L2)

7

KILL MID(L2)

D

C

B

A

PHONE/LINE OUT R1

CN1

KILL HI(R1)

11

12

5

6

KILL HI(R2)

11

12

5

6

CON7

1234567

10

7

R118
4K7

10

7

R122
4K7

8 9

8 9

HI1
MID1
LO1

R119
4K7

R123
4K7

-15V

-15V

HI2

LO2

MID2

R151
1K

R152
1K

PHONE/LINE OUT R2

NO KILL(R2)

C6

10uF/25V

C103

39N

R223

20K

C131
4N7

R224

20K

C107

3N9

R306
3K74

R242
6K81

R246
8K45

R251

C112
47N

C119

22N

37K4

C123

2N2

C113

47N

C128

4N7

C141
100N

R258
15K

R266
4K22

R262
3K48

R280

15K8

IC9A
TL074

IC7A
TL074

IC7C
TL074

IC7D
TL074

KILL LO(R2)

1

R225

20K

1

KILL LO MID(R2)

8

KILL MID HI(R2)

14

KILL HI (R2)

2

3

R270
42K2

2
3

R274

34K

9

10

C60
10N

C59

10N

13
12

C174
1N

R252
37K4

C129
4N7

R226
20K

Titel
Size

Date:
File:

R227
20K

C61

10N

DJM4-PRE(KILL)

A3

IC9B

6

R278
15K8

R287

10K

411

IC7E
TL074

5

6
5

100n

C142

TL074

C172
1N

C180

100P

R288

C143
100n

10K

IC7B
TL074

7

KILL LO HI(R2

7

KILL MID(R2)

411

IC9E
TL074

DJM-4 1.0

17-Apr-2003
DJM4-PRE S03

Sheet
Drawn By:

+15V

-15V

C58

10N

IC6A
TL074

IC4A
TL074

IC4C

TL074

IC4D
TL074

KILL LO(R1)

1

R220

20K

1

KILL LO,MID(R1)

8

14

R250
37K4

C127
4N7

R221
20K

R222
20K

IC4E
TL074

6

R277
15K8

5

R285

10K

6
5

411

C139

100n

C145

100n

C171
1N

100P

C179

411

IC6E
TL074

IC6B
TL074

R286

IC4B
TL074

10K

7

7

KILL MID(R1)

+15V

C140
100n

C146
100n

-15V

IC5E
TL074

R116
4K7

IC19
4051

KILL LO,MID(R1)

KILL LO(R1)
OUT (R1)
NO KILL(R1)

KILL MID(R1)

411

C150

R120

100n

4K7

C149

100n

IC20
4051

KILL LO,MID(R2)

KILL LO(R2)
OUT (R2)

NO KILL(R2)
KILL MID(R2)

+15V

+15V

R117
4K7

16

1

R121
4K7

16

1

KILL LO,HI(R1)

KILL MID HI(R1)

14

15

2

3

KILL LO,HI(R2)

KILL MID HI(R2

14

15

2

3

13

4

13

4

R265
4K22

C111

47N

C126

4N7

C138
100N

R257
15K

R261
3K48

R279
15K8

2
3

R269
42K2

2
3

R273

34K

9

10

C57
10N

C56

10N

13

12

C173
1N

C5

R149

1K

R150
1K

NO KILL(R1)

1 2 3 4 5 6 7 8

10uF/25V

C102

39N

R218

20K

C130
4N7

R219

20K

C106
3N9

R307

3K74

8K45

R241
6K81

R245

R249

C110
47N

C118

22N

37K4

C122

2N2

C144
100n

C147
100n

IC8E
TL074

RevisionModel No:

J S TASY

B

411

C168

100n

C167

100n

A

43 of

7654321

8

D

RB7
RB6
RB5

R332

R331

4K7

4K7

SGNDSGND

R333
4K7

P2.438P2.539P2.640P2.741VSS

RB4

36

37

34

35

P5.4/TC0/PWM0

P5.1/SI

P5.2/SO

P5.0/SCK

P5.3/TC1/PWM1

22

Left Meter Right Meter

R142
4K7

0dB

RA0

LED25

2dB

RA1

LED26

4dB

RA2

LED27

7dB

RA3

LED28

10dB

RA4

LED29

P5.5
P5.6

P5.7
DAO
VDD

AVREF
P4.0/AIN0
P4.1/AIN1
P4.2/AIN2
P4.3/AIN3

SN8P1707

VDD

LED

LED

LED

LED

LED

IC23

TR11
PNP

33
32
31
30
29
28
27
26
25
24
23

R323 220
R324 220
R325 220
R326 220

R327 220
R328 220
R329 220

RA0

RA1

RA2

RA3

RA4

Q0
Q1
Q2
Q3

Q4
Q5
Q6

VDD

C197
104

SGND

R334 4K7
R335 4K7 RB2
R336 4K7
R337 4K7

VDD

R143
4K7
0dB

LED

LED30
2dB

LED

LED31
4dB

LED

LED32
7dB

LED

LED33
10dB

LED

LED34

RB3
RB1

RB0

TR12
PNP

VDD

D1
4148

R289

C196
10uF

10K

RA4
RA3

RA2
RA1

RA0

SGNDVDD

R318 220
R319 220

R320 220
R321 220

R322 220

SGND

Left Meter Right Meter

R140
4K7

-20dB

RA0

LED15

-10dB

RA1

LED16

-7dB

RA2

LED17

-4dB

RA3

LED18

-2dB

RA4

LED19

X1

C184

8MHz

20P

SGND SGND

1
2
3
4
5
6
7
8

9
10
11

VDD

LED

LED

LED

LED

LED

TR9
PNP

VPP
P0.0/INT0
P0.1/INT1
P0.2/INT2
RST
P1.5
P1.4
P1.3
VDD
P1.2
P1.1

RA0

RA1

RA2

RA3

RA4

R141
4K7

-20dB
LED20

-10dB
LED21

-7dB
LED22

-4dB
LED23

-2dB
LED24

C185
20P

44

Beat Assist

SW12A

1

Ch2

Ch1

C

2
3

SW PS-22E85L
SW14A

1
2
3

SW PS-22E85L

SGND

SGND

LED1
LED

Ch1

VDD VDD

R127

4K7

VDD

R128
4K7

TEST1

R316
220

SGND SGND

R317
220

C195
104P

R129
4K7

SGND

LED2
LED

Ch2

VDD

Beat Led

B

R330
4K7

43

42

XIN

XOUT

P1.012P2.013P2.114P2.215P2.316VSS17AVSS18P4.7/AIN719P4.6/AIN620P4.5/AIN521P4.4/AIN4

VDD

TR10
PNP

LED

LED

LED

LED

LED

VDD VDD VDD

RB0

Q0
Q1
Q2
Q3
Q4
Q5
Q6

RB1

TR1
PNP

12

11

a

A1

7

b

4

c

2

d

1

e

10

f

5

g

3

dp

IC24
LED-7SEG-3

Ch1 BPM Ch2 BPM

RB6

Time Offset Tempo Difference

Ch2 Side Ch2 Side

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Ch1 Side Ch1 Side

LED3

LED4

LED5

LED6

LED7

LED8

LED35

RB2

TR2
PNP

9

A2

LED

LED

LED

LED

LED

LED

LED

TR4
PNP

8

A3

VDD

TR3
PNP

VDD VDD VDD

RB3

Q0
Q1
Q2
Q3
Q4
Q5
Q6

RB7

11

7
4
2
1

10

5
3

TR5
PNP

a
b
c
d
e
f
g
dp

IC25
LED-7SEG-3

Q0

Q1

Q2

Q3

Q4

Q5

Q6

15V

411

IC27E

TL074

-15V

RB4

12

A1

LED9

LED10

LED11

LED12

LED13

LED14

LED36

LED

LED

LED

LED

LED

LED

LED

9

C238
104

C239
104P

RB5

TR6
PNP

A2

VDD

TR7
PNP

TR8
PNP

8

A3

L1

C219
220uF

VDD

C152
104P

BLM21

5V

SGND

C151
104

D

C

B

D11
4148

D12
4148

8

14

IC10D
TL074

D13
4148

D14

4148

IC10C

TL074

D15

4148

4148

R373

C232

10uF/25V

C233

10uF/25V

12K

C230

47P

7

IC27B

TL074

R374

12K

C231

47P

8

IC27C
TL074

R386

100K

6
5

9
10

R385
100K

Left Meter

Right Meter

Titel
Size

Date:
File:

DJM4-PRE(BPM)

A3

DJM-4 1.0

3-Aug-2003
DJM4-PRE S04

Sheet
Drawn By:

RevisionModel No:

J S TASY

A

44of

R347
62K

R192
8K2

9
10

R348
62K

D16

R193
8K2

13
12

R110
18K

C183
20P

Ch1 Music

Ch2 Music

A

1 2 3 4 5 6 78

2
3

6
5

R113
18K

C186

20P

IC15A
4580

IC15B
4580

1

10uF/25V

7

10uF/25V

R190

8K2

C12

R191
8K2

C19

D5
4148

R345
62K

D6

4148
2
3

D7

4148

D8

4148
6
5

IC10A
TL074

IC10B
TL074

R346
62K

D9
4148

1

D10

4148

7

R162
1K

R161

C211

1.0uF

SGND

1K

C212

1.0uF

SGND

SGND

SGND

C213

1.0uF

C214

1.0uF

R163

1K

R164

1K

7654321

8

IC2A
5218

IC2B

5218

IC3A
5218

IC3B

5218

C6

10uF/25V

C5
100P

C7

10uF/25V

C4

100P

10uF/25V

C40

10uF/25V

C39
100P

C41

10uF/25V

C38

100P

10uF/25V

C19

C20

10uF/25V

7

C42

C56

10uF/25V

7

CHANNEL 3

PHONO (INPUT3)

X2

CN-RCA2-4PORT

D

PHONO

LINE

C

PHONO

LINE

L

R

SW2A

SW PS-22E85L

C12
100P

SW2B

SW PS-22E85L

P

C13
100P

LINE (INPUT3)

C1
47uF/25V

1
2
3

C14

47uF/25V

4
5
6

C16

10uF/25V

C15

10uF/25V

R1

120R

120R

R12

47K

L

R

R13
47K

R14

C2

27n

C17

27n

C3

6n8
R2

10K

R3

100K

2
3

C18

6n8

R15
10K

R16
100K

6
5

CHANNEL 2

PHONO (INPUT2)

X3

CN-RCA2-4PORT

B

PHONO

LINE

PHONO

A

LINE

L

R

SW3A

SW PS-22E85L

C49
100P

SW3B

SW PS-22E85L

P

C50
100P

1 2 3 4 5 6 78

LINE (INPUT2)

C35
47uF/25V

1
2
3

C51

47uF/25V

4
5
6

C53

10uF/25V

C52

10uF/25V

R29

120R

120R

R40

47K

L

R

R41
47K

R42

C36

27n

C54

27n

C37

6n8
R30

10K

R31

100K

2
3

C55

6n8

R43
10K

R44
100K

6
5

R17
47K

R45
47K

R5
47K

R4
47K

R18

47K

R33
47K

R32
47K

R46

47K

R19
2K2

R47
2K2

R6
2K2

R34
2K2

R7
2K2

R20
2K2

R35
2K2

R48
2K2

LINE L2

LINE R2

PHONO L2

PHONO R2

LINE L3

LINE R3

PHONO L3

PHONO R3

CHANNEL 1

PHONO (INPUT1)

7
8
9

10
11
12

X1

CN-RCA2-4PORT

SW PS-42E85L

PHONO

LINE

C22

100P

SW PS-42E85L

PHONO

LINE

C21
100P

L

R

SW1A

SW1B

P

SW1C

P

SW PS-42E85L

SW1D

P

SW PS-42E85L

SEND FROM PFL(EFFECTS) RETURN TO MAIN(EFFECTS)

C43
470P

C44
470P

L

R

R36

SEND L RETURN L

SEND R

1K

R37
1K

BOOTH ( MAIN OUT) TAPE ( MAIN OUT)

BOOTH L

BOOTH R

R49

100R

R50

100R

C57

470P

C58

470P

L

R

LINE (INPUT1)

C8
47uF/25V

1
2
3

C24

10uF/25V

C23

47uF/25V

4
5
6

C25

10uF/25V

X4
CN-RCA2-4PORT

X5
CN-RCA2-4PORT

R8
120R

R21

120R

R22
47K

R23
47K

L

R

C9
27n

C26
27n

C10
6n8

R9

10K

R10
100K

2
3

C27

6n8

R24
10K

R25

100K

6
5

L

R

L

R

IC1A
2068

IC1B
5218

CN2
16P-2.0

10uF/25V

C28

10uF/25V

7

C45
100P

C46
100P

C59
470P

C60
470P

1

RETURN L

2

RETURN R

3

SEND L

4

SEND R LINE R2
5
6
7
8
9

10
11

TAPE L

12

TAPE R

13

BOOTH L

14

BOOTH R

15

AMP L

16

AMP R

C11

R52

100R

R51

100R

R26
47K

R27

47K

R11

2K2

R28
2K2

RETURN R

TAPE L

TAPE R

-15V

+15V +5V

PHONO L1

POWER IN 9V

PHONO R1

CN1

3P-3.9

1
2
3

PHONO R1
PHONO L1

LINE L2
PHONO R2

PHONO L2
LINE R3

LINE L3
PHONO R3

PHONO L3

CN1
14P-2.0

1
2
3
4
5
6
7
8
9
10
11
12
13
14

C28
1000uf/35v

C30

1000uF/35V

AMP L

AMP R

DJM3-PWR

D2

1N4004

D1

1N4004

D3

1N4004

D4

1N4004

D5

1N4004

D6
1N4004

R38
100R

R39
100R

IC1C
5218

8 4

DJM4-PU(POWER)

Titel
Size

A3

Date:
File:

-15V
+15V

+5V

X1

C29

1000uF/35V

C32

470uF/25V

C31

1000uF/35V

7915

7805

7815

C33
100n

X1

C34
100n

X3

C35

100n

AMP ( MAIN OUT)

L

C47
470P

R

C48

470P

C29
100P

IC2C
5218

C30
100P

8 4

2-Aug-2003

DJM4-PU.Sch

DJM-4 VER030802

5
4
3
2
1

CN3

5P-2.5

-15V

C15

10uF/25V

+5V

C16

10uF/25V

+15V

C21
10uF/25V

X6
CN-RCA2-4PORT

C31
100P

C32
100P

-15V

IC3C
5218

8 4

+15V

Sheet
Drawn By:

DC OUT

5
4
3
2
1

CN2

5P-2.5

L

R

C33
100P

C34
100P

RevisionModel No:

11of

J.S. TASY

D

C

B

A

87654321

+15V

R9

6
5

9

10

IC2E

TL074

68K1

R10

2K21D2

R11

240K

C3
22P

IC2B
TL074

R16

68K1

R17
2K21

R18
240K

C4
22P

IC2C
TL074

411

C5
100n

C6

100n

MIC IN

X1

PHONEJACK5 (5-PIN)

7

CROSSFADER

CURVE

VR1A
100KB

CROSSFADER

8

VR1B

100KB

3

1

CURVE

6

4

C7

10uF/25V

3c
4d
2b
1a

5e

10uF/25V

2

R19

10K

5

R22

10K

R29

1K

R30

1K

R20

36K

R21

R23

33K

R24
36K

33K

R26

47K5

R25

47K5

R31
62K

-15V

-15V

C8

R7

4K99

D1

4148

4148

R6
5K62R5

1

R1
6K34

D

R2
4K99

R3

R4

1K65

10R

-15V

CN1

4P-2.5

4
3
2
1

100K

C1

10n

R8

240K

-15V

2
3

IC1A
2068

D3

4148

1

2

3

C

REVERSE TAP

48

6

7

5

C2
10n

REVERSE HOLD

SW1

R12
100K

R15

R14

7

IC3C

2068

R13

5K62

84

D4

4148

240K

4K99

-15V
6

5

IC1B

2068

+15V

84

IC1C
2068

R32
62K

C9

100P

6
5

IC3B

2068

C12

PHONES IN

X2
PHONEJACK5 (5-PIN)

7

3c
4d
2b
1a

5e

D

100P

R27
10K

D5

4148

C10
2n7

2
3

R28
10K

4148

13
12

D7

C11
2n7

TL074

IC2A
TL074

IC2D

1

14

4148

D8

4148

SMOOTH

MIC IN

+15V

CN2

10P

1
2
3
4
5
6
7
8
9

10

PHONES OUT R
PHONES OUT L

C13

10uF/25V

-15V

+15V

R33
4K7

CN3
CON7

1234567

C

IC4

9

10

11

12

13

14

1

2

3

4

5

40106

6

7 8

D6

SHARP

-15V
R34

4K7

B

R36

C14

20K

100n

+15V

R35
20K

SW2

5
6

7

SW SLIDE-B

A

1 2 3 4 5 6 7 8

+15V

R37
20K

1
2

3

48

SW3

5
6

7

SW SLIDE-B

C15
100n

R38
20K

R40

C16

20K

100n

R42

SW5

5
6

7

SW SLIDE-B

C17
100n

20K

+15V

R43
20K

1
2

3

48

SW6

5
6

7

SW SLIDE-B

+15V

R39
20K

1
2

3

48

SW4

5
6

7

SW SLIDE-B

1
2

3

48

+15V

R41
20K

C18
100n

R44
20K

R46

SW7

5
6

7

SW SLIDE-B

C19
100n

20K

1
2

3

48

DJM4-FP

Titel
Size

Date:
File:

A3

17-Apr-2003

DJM4-FP.Sch

DJM-4 1.0

Sheet
Drawn By:

RevisionModel No:

J.S. TASY

11 of

+15V

R45
20K

1
2

3

48

B

A

4. PRINTED CIRCUIT DIAGRAM

PCB : DJM4-PRE Top Overlay

PCB : DJM4-PRE Top layer

PCB : DJM4-PRE Bottom Layer

PCB : DJM4-PRE Bottom Overlayer