Alto AMX-140-FX, AMX-140 Service Manual
Service Manual
Model: AMX-140/AMX-140FX
www.altoproaudio.com
Versi on: .2
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
Mono input channels
Stereo input channels
Impedances
Equalization
DSP Section (For AMX-140FX Model)
Main Mix Section
Power supply (AC/AC Adaptor)
Microphone input electronically balanced, discrete input configuration
Frequency response 10Hz to 55kHz, + /- 3dB
Distortion (THD & N) 0.005% at +4dBu, 1kHz
Gain range 0dB to 44dB (MIC)
SNR (Signal to Noise Ratio) 115dB
Line input electronically balanced
Frequency response 10Hz to 55kHz, + -3dB
Distortion (THD & N) 0.005% at +4dBu, 1kHz
Sensitivity range +15dBu to -30dBu
Line input Unbalanced
Frequency response 10Hz to 55kHz, +/- 3dB
Distortion (THD & N) 0.005% at +4dBu, 1kHz
Microphone input 1.4kOhm
Channel Insert return 2.5kOhm
All other inputs 10kOhm or greater
Tape out 1kOhm
All other output 120Ohm
Hi shelving + /- 15dB @12kHz
Mid bell + /- 12dB @2.5kHz
Low shelving + /- 15dB @80Hz
Low Cut filter 75Hz, 18dB/oct.
A/D and D/A converters 24 bit
DSP resolution 24 bit
Type of effects Hall, Room, Vocal & Plate REVERBS
Mono & Stereo DELAY (max DELAY TIME 650ms)
Chorus, Flanger & Reverb MODULATIONS
REVERB+DELAY, REVERB+CHORUS,
REVERB+FLANGER combinations
Presets 256
Controls 16-position PRESET Selector
16-position VARIATION selector
PEAK LED
MUTE SWITCH with LED indicator
Noise (Bus noise) Fader 0 dB, channels muted: -100dBr (ref.:+4dBu)
Fader 0dB, all input channels assigned and s et to
UNITY gain: 90dBr (ref.:+4dBu)
Max output +22dBu balanced XLR,
+22dBu unbalanced, 1/4" jacks
AUX Returns gain range
AUX Sends max out +22dBu
Main voltage USA/Canada 100 120V~, 60Hz
Europe 210 240V~, 50Hz
U.K./Australia 240V~, 50Hz
Power Consumption 17.1 watts
- ∞ to +20dB
Physical
Dimension (W X D X H) 270mmX310mmX35/45mm
(7.79"X8.95”X1.01”/1.30”)
Net weight 3.0Kg (6.61lb)
Shipping weight 3.6Kg (7.94lb)
D
C
B
A
VER031210
11of
8
LEFT
AUX SEND
AUX SEND1
TRS
TRS
AUX SEND2
MAIN OUT
TRS
213
MAIN MIX LEFT
TRS
213
MAIN MIX RIGHT
TAPE OUT
2-TRACK
TAPE IN
7654321
LEVEL
2TK IN
2
2
LEVEL
MAIN MIX
1
3
1
2TK TO MIX
3RIGHT-BUS
2TK TO CTRL ROOM
RIGHT
1
2
PHONES
TRS
LEFT
TRS
RIGHT
TRS
PHONES OUTPUT
CONTROL ROOM OUTPUT
3
1
3
2
CONTROL ROOM
LEFT METER
& PHONES
RIGHT METER
RevisionModel No:
AMX-140FX BLOCK DIAGRAM
ALTO MIXING CONSOLE
A2(C)
Titel
Size
Drawn By:
Sheet
19-Dec-2003
AMX140FX MAP.Sch
File:
Date:
EFX SEND
AUX-2
AUX-1
RIGHT-BUS
LEFT-BUS
LO MID HI
AUX-1
LEFT-BUS
PAN
LEVEL
LO CUT
3
12K2.5K80
3-BAND EQ
2
+/-15db
AUX-2
RIGHT-BUS
1
AUX1
EFX SEND
AUX-1
75Hz
HI PASS
AUX2
POST
1 2
LEFT-BUS
SG/OL
AUX-2
PRE
1 2
RIGHT-BUS
LEFT-BUS
EFX SEND
AUX-2
AUX-1
RIGHT-BUS
LEFT-BUS
AUX2
AUX-2
AUX-1
LEFT-BUS
RIGHT-BUS
LEFT-BUS
RIGHT-BUS
AUX1
SG/OL
AUX-1
AUX1
RIGHT-BUS
LEFT-BUS
BALANCE
LEVEL
AUX RETURN2
12K2.5K80
+/-15db
LO M D HI
3-BAND EQ
12K2.5K80
EQ
AUX RETURN1
RSRN
GA N
MONO INPUT CHANNELS ( 1-4 )
+48V
POWER
PHANTOM
+
213
-
MIC IN
D
3c5e1a4d2b
LINE IN
T
TN
INSERT
MIC GAIN:0~60dB
LINE IN TRIM:+15dB~-45dB
-
RSRN
3c5e1a4d2b
TN
+
T
LEFT(MONO)
-
RSRN
3c5e1a4d2b
TN
+
T
STEREO INPUT CHANNELS (5-8)
C
GAIN
RIGHT
PHANTOM
-
+
CHANNEL 5,6 ONLY
+
-
T
RSRN
TN
213
+48V
POWER
MIC5 IN
3c5e1a4d2b
STEREO AUX RETURN 1
LEFT(MONO)
RSRN
3c5e1a4d2b
B
-
+
T
TN
-
+
T
RSRN
TN
3c5e1a4d2b
RIGHT
STEREO AUX RETURN 2
LEFT
-
RSRN
3c5e1a4d2b
TN
+
DSP BOARD
T
PRESETS
RIGHT
MUTE
VARIATIONS
A
DSP FOOTSWITCH
1 2 3 4 5 6 78
B
AUX-1
AUX-2
VR21
W50K
AUX-PRE
VR22
W50K
AUX-POST
8K06
8K06
R293
R292
LEFT-BUS
5K1
R296
VR31
PAN
4K7
R9
(PRE)
C107
47u/25V
36K
R273
22P
C186
VCC
PEAK
1K5
R266
LD3
RED
BR
TR6
6K8
R160
C197
2.2u/50V
R159
C157
12n(M)
VR20
R158
MID
2.5K
6K8
B50K
6K8
BR
TR5
4K7
R250
47K
R230
C144
10K
R63
33n(M)
C143
33n(M)
LO
80HZ
2
R259
3K9
VR32
C105
PGND
47u/25V
LEVEL
1M
R223
22P
C185
C102
47u/25V
C174
C166
18n(M)
12n(M)
VR26
B50K
1K1
R215
C134
18n(M)
EQ HI
12KHZ
INSERT4
d
3c5e1a
2b
T
RSRN
TN
W50K
R44
1
3
W50K
7
6
X4
RIGHT-BUS
5K1
R299
4K7
POST
J4
U12A
NJM4580M
22K
R239
C104
47u/25V
U12B
NJM4580M
5
R203
910R
B50K
VR27
1K3
R143
R202
910R
JY-6351G-02-250
C321
47u/25V
AUX-2
VR30
AUX-POST
(PRE)
VCC
1K5
R267
6K8
R164
C198
2.2u/50V
C158
MID
2.5K
RIGHT-BUS
R290
4K7
R80
J2
U10A
NJM4580M
3
7
5
1K3
R139
X2
JY-6351G-02-250
C319
C
AUX-1
AUX-2
VR13
W50K
5K1
POST
22K
R237
U10B
NJM4580M
910R
R199
B50K
VR11
R198
910R
AUX-PRE
VR14
W50K
AUX-POST
8K06
8K06
R289
R288
(PRE)
VCC
PEAK
1K5
LD2
R265
R156
C196
MID
2.5K
RED
BR
TR4
6K8
4K7
R249
2.2u/50V
47K
R229
6K8
C142
R155
33n(M)
C156
12n(M)
VR12
B50K
6K8
R154
C141
33n(M)
LO
80HZ
47u/25V
LEFT-BUS
RIGHT-BUS
5K1
R295
VR23
PAN
4K7
R81
22P
C184
3K9
R258
C97
PGND
47u/25V
5K1
R294
W50K
4K7
R82
POST
J3
C106
47u/25V
36K
1
R272
U11A
NJM4580M
3
2
22K
VR24
W50K
R238
LEVEL
BR
TR3
10K
R55
C103
47u/25V
7
22P
C182
1M
R222
U11B
NJM4580M
5
6
C101
47u/25V
R201
910R
C173
C165
18n(M)
12n(M)
B50K
12KHZ
T
1K1
R214
VR19
1K3
R141
R200
X3
JY-6351G-02-250
C320
910R
47u/25V
VR18
B50K
C133
18n(M)
EQ HI
INSERT3
d
3c5e1a
2b
RSRN
TN
D
AUX-1
5
1
R78
1
3
W50K
47u/25V
7
6
X1
RIGHT-BUS
5K1
R286
4K7
POST
J1
U9A
NJM4580M
22K
R236
U9B
NJM4580M
5
R197
910R
B50K
VR3
1K3
R137
910R
R196
JY-6351G-02-250
C318
47u/25V
AUX-2
VR5
W50K
AUX-PRE
VR6
W50K
AUX-POST
8K06
8K06
R285
R284
(PRE)
123
VCC
PEAK
R264
1K5
LD1
RED
BR
TR2
6K8
R152
4K7
R248
C195
2.2u/50V
47K
R228
6K8
C140
R151
33n(M)
C155
12n(M)
VR4
B50K
6K8
R150
C139
33n(M)
LO
MID
80HZ
2.5K
LEFT-BUS
5K1
R291
VR15
W50K
4K7
R79
PAN
C98
47u/25V
36K
1
R271
22P
C183
2
3K9
R257
VR16
W50K
C96
PGND
47u/25V
LEVEL
BR
TR1
10K
R47
C95
47u/25V
22P
C181
1M
R221
6
C94
47u/25V
C172
C164
18n(M)
12n(M)
VR10
B50K
1K1
R213
C132
18n(M)
(SOLTON 1K2)用
EQ HI
12KHZ
INSERT2
d
3c5e1a
2b
T
RSRN
TN
LEFT-BUS
8
5K1
R287
GND
GND
VR7
W50K
3
PAN
AMX-140FX (1/5)
2
4K7
R77
C90
47u/25V
R270
36K
22P
C180
765321
2
R256
3K9
VR8
C89
47u/25V
LEVEL
C88
22P
1M
C179
R220
C87
47u/25V
C171
C163
12n(M)
18n(M)
VR2
B50K
1K1
R212
C131
18n(M)
EQ HI
12KHZ
INSERT1
d
3c5e1a
2b
T
RSRN
TN
A
VER030722
AUX-1
VR29
W50K
AUX-PRE
W50K
8K06
8K06
R298
R297
PEAK
R251
6K8
R163
12n(M)
VR28
B50K
6K8
R162
LO
PGND
LD4
RED
C42
100n
BR
TR8
8
BR
TR7
C303
C146
80HZ
100n
8
47K
R231
C301
100n
8
33n(M)
R71
10K
C299
100n
8
C145
C297
100n
33n(M)
8
C295
100n
8
C293
100n
8
4K7
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KEVIN LIN
RevisionModel No
Drawn By
Sheet
AMX-140
AMX-140
18-Aug-2005
AMX140FX Sch
A2
Titel
Size
File
Date
C63
100n
U12C
C304
100n
U11C
C302
100n
U10C
C300
100n
U9C
C298
100n
U8C
C296
100n
U7C
C294
100n
U6C
C292
C291
11K0
R183
R134
3K60
20K
U8B
NJM4580M
62K
R40
51K1
51K1
R387
NJM4580M
U1~ U12=
100n
8
C289
100n
8
C287
100n
8
C205
100n
8
C203
100n
8
VCC
AMX-1 0
AMX-1 0
AMX-1 0
123
LO CUT
R5
20K
C17
47u/25V
1
R28
580M
5K11
U5A
3
2
R27
5K11
R25
10K0
1
580M
U1A
3
R19
11K0
C15
22u/35V
C1
470P
22P
C30
C29
22P
R3
22P
5K11
C28
2
VR1
O10K
C4
47P
R23
3K60
C21
47u/50V
R15
6K81 1/4W
C3
PH PWR
470P
R7
R7
R2
R1
213
X5
SMC-6.02
MIC 1
5
6
SW1B
PS-22E85L
P
SW1A
PS-22E85L
6K8
R149
C72
0.22u/50V
C71
0.22u/50V
R4
C27
22P
5K11
7
5
6
R73
C23
000u/10V
27R
C22
47u/50V
R16
6K81 1/4W
3c5e1ad2b
C86
R136
R26
10K0
U1B
580M
C16
22u/35V
C2
X6
JY-6351G-02-250
20K
R177
47u/25V
7
U5B
NJM4580M
5
6
1K3
C70
62K
R131
0.22u/50V
R24
3K60
R21
11K0
R20
11K0
C18
22u/35V
R69
51.1K
R68
51.1K
470P
C5
LINE IN1
LINE IN GAIN +10~-40dB
MIC GAIN -10~-60dB
123
LO CUT
20K
R12
C20
47u/25V
R34
1
5K11
580M
U6A
3
2
C33
22P
R33
5K11
R31
10K0
R10
C32
1
5K11
580M
U2A
3
2
VR9
O10K
C11
3K60
R29
C24
R17
47u/50V
6K81 1/4W
C10
470P
R7
R38
470P
213
X7
MIC 2
5
6
SW2B
PS-22E85L
P
SW2A
PS-22E85L
6K8
R153
C75
0.22u/50V
C74
0.22u/50V
C34
22P
R11
C31
22P
5K11
22P
7
6
R74
C26
000u/10V
27R
47P
C25
R18
6K81 1/4W
PH PWR
R7
R37
3c5e1ad2b
SMC-6.02
R138
5
47u/50V
C93
47u/25V
1K3
R32
10K0
U2B
580M
C19
22u/35V
C7
X8
R179
7
5
6
R132
C73
0.22u/50V
R30
3K60
11K0
R22
R386
470P
JY-6351G-02-250
U6B
51K1
R8
20K
NJM4580M
62K
51K1
R46
11K0
C38
22u/35V
C6
LINE IN2
123
LO CUT
20K
R84
C61
R76
47u/25V
5K11
1
580M
U7A
3
2
C55
22P
R62
5K11
R58
10K0
R64
22P
C52
1
5K11
580M
U3A
3
2
VR17
O10K
C35
3K60
R51
C44
R70
47u/50V
6K81 1/4W
C13
470P
R7
R7
470P
R6
213
X9
MIC 3
5
6
SW3B
PS-22E85L
P
SW3A
PS-22E85L
6K8
R157
C78
0.22u/50V
C77
0.22u/50V
C58
22P
R66
C54
22P
5K11
7
6
R56
C50
000u/10V
27R
47P
C48
R42
6K81 1/4W
PH PWR
R7
3c5e1ad2b
SMC-6.02
1K3
R140
R59
5
47u/50V
C100
47u/25V
7
6
C76
10K0
U3B
580M
C40
22u/35V
C9
470P
X10
JY-6351G-02-250
R182
20K
U7B
NJM4580M
5
R133
62K
0.22u/50V
R53
3K60
11K0
R49
11K0
R48
C39
22u/35V
R36
51.1K
R35
51.1K
LINE IN3
123
LO CUT
20K
R85
C62
47u/25V
1
R75
580M
5K11
U8A
3
2
C57
22P
R67
5K11
R60
10K0
R65
22P
C53
1
5K11
580M
U A
3
2
VR25
O10K
C36
3K60
R52
C41
R43
47u/50V
6K81 1/4W
C12
470P
R7
R13
C8
470P
R1
213
X11
MIC 4
5
6
SW4B
PS-22E85L
P
SW4A
PS-22E85L
C108
47u/25V
7
R161
6K8
C81
0.22u/50V
5
6
C80
0.22u/50V
C60
22P
1K3
R142
C79
0.22u/50V
R83
R61
C59
R57
47P
PH PWR
R7
SMC-6.02
10K0
22P
5K11
7
U B
580M
5
6
C51
000u/10V
27R
R54
C49
47u/50V
C14
22u/35V
C37
470P
X12
JY-6351G-02-250
R50
R45
3c5e1ad2b
6K81 1/4W
LINE IN4
100n
U5C
C290
100n
U4C
C288
100n
U3C
100n
C206
U2C
C204
100n
U1C
-VCC
AMX1 0FX S0
AMX1 0FX S03
AMX1 0FX S02
1 2 3 5 6 78
AMX-1 0
AMX1 0FX S01
D
C
B
A
D
8
W50K
NJM4580M
AUX-2
VR38
W50K
AUX-POST
4K7
R313
POST
(PRE)
J5
AMX-140FX (2/5)
765321
LEFT-BUS
5K1
R311
BAL
W50K
VR39B
4K7
R178
10K
R100
C116
47u/25V
R281
36K
1
LEVEL
U17A
NJM4580M
3
2
W50K
VR40A
22K
R244
22P
C188
3K9
R260
C113
47u/25V
RIGHT-BUS
5K1
R310
VR39A
4K7
R180
R99
10K
C115
47u/25V
36K
7
R280
22P
C189
3K9
R261
C114
47u/25V
LEVEL
U17B
5
6
W50K
VR40B
22K
R245
C
AUX-1
VR37
W50K
AUX-PRE
2K7
R312
VCC
PEAK
LD5
RED
1K5
R268
6K8
R170
C199
2.2u/50V
4K7
R254
R233
PGND
BR
TR10
BR
TR9
47K
R232
47K
LEFT-BUS
5K1
R316
BAL
VR46B
W50K
4K7
R181
R124
10K
C130
47u/25V
36K
R283
1
U20A
22P
C192
R262
3K9
C121
47u/25V
LEVEL
NJM4580M
3
2
W50K
VR47A
22K
R246
B
AUX-1
VR44
W50K
W50K
4K7
R314
AUX-PRE
2K7
R317
VCC
PEAK
1K5
LD6
R269
R173
C200
RED
BR
TR12
6K8
TR11
2.2u/50V
4K7
R255
47K
R235
R234
VR46A
NJM4580M
AUX-2
VR45
AUX-POST
POST
(PRE)
W50K
J6
RIGHT-BUS
5K1
R315
4K7
R184
10K
R123
C129
47u/25V
36K
7
R282
22P
C194
3K9
R263
C128
47u/25V
LEVEL
U20B
5
6
W50K
VR47B
22K
R247
A
VER030722
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AMX140FX
AMX140FX
18-Aug-2005
AMX140FX S01
A2
Titel
Size
File
Date
PGND
BR
47K
R98
3K60
10K0
22P
C190
C168
80HZ
18n(M)
C148
R96
10K
33n(M)
B50K
VR34B
C136
C147
18n(M)
33n(M)
6K8
R167
VR36A
B50K
R166
6K8
LO
C120
1M
47u/25V
R225
7
U16B
NJM4580M
5
6
C119
47u/25V
C160
MID
2.5K
20K
R192
U15A
NJM4580M
10K0
R105
22P
C227
100P
C273
JY-6351G-02-250
6K8
B50K
6K8
10K
R111
C150
33n(M)
C149
33n(M)
LO
80HZ
C118
47u/25V
7
10K0
R109
C67
22P
5
6
18K
R104
18K
R103
100P
C276
T
RSRN
TN
3c5e1ad2b
X15
JY-6351G-02-250
R169
12n(M)
VR36B
R168
10K0
R110
RIGHT
R207
910R
C176
12n(M)
B50K
VR35B
1K3
1K1
R217
R146
R206
910R
EQ HI
12KHZ
20K
R190
C117
47u/25V
1
10K0
R107
10K0
R108
22P
C66
R101
3
2
18K
R102
18K
100P
C275
T
RSRN
TN
3c5e1ad2b
X14
LEFT(MONO)
LINE IN 5/6
1M
R226
1
22P
C191
3
2
C124
47u/25V
C177
C169
12n(M)
18n(M)
VR41A
B50K
1K1
R218
R147
C137
18n(M)
EQ HI
12KHZ
20K
R193
U15B
NJM4580M
C68
22P
10K0
R106
10K0
R112
22P
C228
100P
RSRN
3c5e1ad2b
C279
T
TN
100P
C274
LINE IN 7/8
1K3
C127
C122
R118
U19A
R209
VR42A
R208
10K0
LEFT(MONO)
47u/25V
47u/25V
NJM4580M
910R
B50K
910R
1
2
R113
MID
2.5K
R194
U18A
3
10K0
X16
JY-6351G-02-250
R121
C161
20K
NJM4580M
R116
C229
C277
10K0
12n(M)
10K0
22P
100P
10K0
R122
22P
C193
6K8
C152
B50K
6K8
10K
R120
C170
33n(M)
18n(M)
VR41B
B50K
C151
C138
18n(M)
33n(M)
LO
80HZ
C123
47u/25V
7
10K0
R119
C69
22P
5
6
10K0
10K0
R114
R115
C280
100P
T
RSRN
TN
3c5e1ad2b
R172
VR43A
R171
X17
RIGHT
1M
R227
6
C125
47u/25V
C178
12n(M)
1K1
R219
EQ HI
12KHZ
20K
R195
U18B
NJM4580M
10K0
R117
22P
C230
100P
C278
JY-6351G-02-250
C126
7
47u/25V
U19B
NJM4580M
5
6K8
R211
910R
B50K
VR42B
1K3
R148
R210
910R
MID
C154
B50K
6K8
LO
80HZ
NJM4580M
U1~ U12=
10K
R125
33n(M)
C153
33n(M)
C217
C216
100n
8
C212
100n
8
C210
100n
8
C208
100n
8
C202
100n
8
C109
100n
8
C85
100n
8
C65
100n
8
100n
U20C
C215
100n
U19C
C211
100n
U18C
C209
100n
U17C
C207
100n
U16C
C201
100n
U15C
100n
C84
U14C
C64
100n
U13C
VCC
-VCC
1 2 3 5 6 78
R175
C162
12n(M)
VR43B
R174
2.5K
R97
10K0
C112
1M
R224
47u/25V
1
22P
C187
C167
18n(M)
VR34A
B50K
C135
18n(M)
EQ HI
C46
22P
R165
5K11
R144
R130
10K0
1
580M
U13A
3
2
3
2
VR33
O10K
R127
3K60
C91
47u/50V
R7
R 1
213
MIC 5
5K11
C82
C175
R216
12KHZ
GND
GND
R91
470P
U16A
NJM4580M
3
2
C111
47u/25V
R205
910R
12n(M)
1K1
C56
47u/25V
1
580M
U1 A
3
22P
C110
5
1
R128
C83
47P
C159
B50K
12n(M)
VR35A
1K3
R145
910R
R204
MID
2.5K
R176
5K11
22P
C47
2
R135
R129
C43
10K0
22P
5K11
7
U13B
580M
5
6
C99
000u/10V
27R
R126
C92
47u/50V
R72
6K81 1/4W
6K81 1/4W
PH PWR
R7
R39
X13
SMC-6.02
LINE IN5
D
C
B
A
d
3c5e1a
22P
C261
NJM4580M
62K
47u/25V
U50B
NJM4580M
X21
JY-6351G-02-250
PHONES
2b
R330
120R
10K0
R383
6
2
B
X28
7
1
CONTROL
TAPE OUT
TAPE IN
JY-6351G-02-250
R331
120R
U28B
BA15218N
5
U28A
BA15218N
3
C262
22P
C225
7K5
R344
C249
ROOM
47u/25V
PHONES/
1
X31
SCP6873NS3232
LEFT
d
3c5e1a
2b
R333
120R
R332
R334
120R
120R
7
U29B
BA15218N
5
6
1
U29A
BA15218N
3
2
R384
10K0
22P
R382
10K0
C250
36K
R278
47u/25V
7
6
W50K
VR50B
27K
R348
123
2TK TO
CTRL ROOM
LEFT-BUS
2TK TO MIX
VR53A
C248
47u/25V
22P
C281
6
20K
R187
C246
47u/25V
36K
R279
U27B
NJM4580M
22P
C226
5
7K5
R345
L-METER
C255
47u/25V
SW10A
PS-22E85L
SW9A
PS-22E85L
123
W50K
5K1
R308
R381
10K0
7
U23B
NJM4580M
C282
5
20K
R186
C271
100P
CTRL ROOM OUT
X29
R337
120R
R86
10K0
2
VR50A
RIGHT-BUS
22P
R189
C251
d
3c5e1a
JY-6351G-02-250
R335
120R
C256
1
47u/25V
U27A
3
W50K
R349
5
6
P
P
5
6
VR53B
W50K
C252
47u/25V
1
3
2
20K
R188
47u/25V
2b
NJM4580M
27K
R309
RIGHT
R-METER
SW10B
PS-22E85L
5K1
R385
U23A
20K
100P
C272
R336
SW9B
10K0
NJM4580M
NJM4580M
1K
1K
R343
R342
U21~ U27=
6
2 5
3
R(RED)
L(WHITE)
LEFT
(BALANCED)
X26
213
R396
100R
R380
10K0
7
22P
6
10K0
R379
1
3
2
56K
R320
22P
C269
W50K
VR48B
R94
8K2
C239
47u/25V
C
JY-5030-030G
51K
R392
R391
51K
C45
47u/25V
U31B
NJM4580M
5
U31A
NJM4580M
R390
100K
RIGHT-BUS
RIGHT-BUS
8K2
R304
7
5
6
R240
C266
100P
RIGHT
X27
JY-5030-030G
213
R378
R377
C285
6K34
R306
6K34
R305
22P
C224
R303
3K9
C358
47u/25V
C245
47u/25V
U21B
NJM4580M
C356
22K
100R
47u/25V
R319
VR49A
AUX RETURN 2
22P
10K0
100R
51K
R394
R393
51K
C286
47u/25V
R375
10K0
7
U32B
22P
C327
1
2
W50K
R242
16K5
R433
R92
10K0
C242
47u/25V
NJM4580M
5
6
10K0
R93
1
U32A
NJM4580M
3
2
R376
100K
C244
47u/25V
C270
22P
U22A
NJM4580M
3
R307
3K9
C359
47u/25V
AUX-1
62K
R432
R340
10K0
C360
47u/25V
1
C357
U50A
NJM4580M
3
2
C247
10K0
47u/25V
R321
7
U22B
5
6
W50K
VR49B
VR52
W50K
R243
5K1
R341
10K0
C361
16K5
R434
7
22P
5
6
R95
10K0
C240
EFXRTN-R
47u/25V
100P
C268
D
8
LEFT
AMX-140FX (3/5)
765321
MAIN OUT
X24
d
3c5e1a
2b
JY-6351G-02-250
T
RSRN
TN
R329
120R
R327
120R
MOUT-L
R90
10K0
36K
R277
7
C237
22P
C264
3K6
R338
C235
47u/25V
22P
C259
47u/25V
5
6
U26B
NJM4580M
W50K
VR51B
LEFT
MAIN MIX
R300
C236
R388
30K
C234
47u/25V
5K1
7
U25B
NJM4580M
5
6
LEFT-BUS
AUX SEND1
X22
d
3c5e1a
2b
JY-6351G-02-250
T
RSRN
TN
R324
120R
R323
120R
AUX SEND1
20K
R88
C231
47u/25V
1
U24A
22P
C222
NJM4580M
3
2
43K
R275
AUX-1
22P
C221
C263
22P
3K6
R339
47u/25V
R322
AUX SEND2
22P
C260
120R
R274
R326
120R
R276
RIGHT
MAIN MIX
d
3c5e1a
RSRN
C232
43K
3c5e1a
RSRN
36K
R301
2b
TN
47u/25V
6
AUX-2
RIGHT
d
2b
T
TN
R328
120R
MOUT-R
R89
1
C238
47u/25V
3
2
U26A
W50K
VR51A
R389
C233
5K1
1
3
2
RIGHT-BUS
AUX SEND2
X23
JY-6351G-02-250
T
R325
120R
20K
R185
7
U24B
NJM4580M
5
X25
JY-6351G-02-250
10K0
NJM4580M
30K
47u/25V
U25A
NJM4580M
MAIN OUT
R395
100R
C328
47u/25V
C326
LEFT-BUS
LEFT-BUS
8K2
R302
C243
47u/25V
56K
R318
1
22P
C223
VR48A
AUX RETURN 1
C241
U21A
NJM4580M
3
2
W50K
22K
R241
R191
8K2
C265
100P
47u/25V
R371 R372
C267
3c5e1ad2b
AUX-1
AUX-2
LEFT 1
RETURN1
STEREO AUX
(MONO / MASTER)
X18
JY-6351G-02-250
3c5e1ad2b
RIGHT 1
X19
JY-6351G-02-250
STEREO AUX
3c5e1ad2b
EFXRTN-L
RETURN2
LEFT 2
100P
X20
3c5e1ad2b
JY-6351G-02-250
RIGHT 2
X30
JY-6351G-02-250
120R
PS-22E85L
NJM4580M
U31~ U32=
A
VER030722
53of
KEVIN LIN
RevisionModel No
Drawn By
Sheet
AMX140FX
18-Aug-2005
AMX140FX S02
AMX140FX
A2
Titel
Size
File
Date
C314
C313
100n
C253
47u/25V
8
8
47R
R347
C324
100n
8
C322
100n
8
C316
100n
8
C312
100n
8
C310
100n
8
C308
100n
8
C306
100n
8
C220
100n
8
C218
100n
8
C354
100n
8
VCC
100n
C254
47u/25V
U29C
BA15218N
U28C
BA15218N
47R
R346
C325
100n
U32C
C323
100n
U31C
C317
100n
U27C
C315
100n
U26C
C311
100n
U25C
C309
100n
U24C
C307
100n
U23C
C305
100n
U22C
C219
100n
U21C
C355
100n
U50C
4580M
-VCC
1 2 3 5 6 78
D
C
B
A
D
C
B
A
+VCC
820R
R252
4
AMX-140FX (4/5)
LD21
RED
YEL
LD20
GR
LD19
GR
(+4) (+7) (+10) (+18)
LD18
GR
LD17
321
GR
LD16
LEFT METER
GR
LD15
GR
LD14
GR
LD13
GR
LD12
GR
LD11
(-30) (-20) (-10) (-7) (-4) (-2) (0) (+2)
GR
LD10
LD7
-VCC
1
1
1
1
1
1
GR
PWR ON
U37B
LM339
U37C
LM339
14
U40B
LM339
U40C
LM339
14
U36B
LM339
U36C
LM339
14
U39B
LM339
U39C
LM339
14
U35B
LM339
U35C
LM339
14
U38B
LM339
U38C
LM339
14
PGND
6
7
8
9
6
7
8
9
6
7
8
9
6
7
8
9
6
7
8
9
6
7
8
9
PH LED
+VCC
R399
R366
R365
R364
R363
R362
R361
R358
R360
R357
R359
R356
R355
R354
22K
22K
5K6
2K
1K3
620R
510R
470R
330R
470R
330R
470R
120R
56R
+VCC
LD8
-VCC
RED
LD33
RED
LD32
YEL
LD31
GR
LD30
GR
LD29
GR
LD28
GR
LD27
GR
LD26
GR
LD25
GR
LD24
GR
LD23
GR
LD22
GR
PGND
1K
R253
TR15
BR
PHANTOM
U37A
4
5
10
11
4
5
10
11
4
5
10
11
4
5
10
11
4
5
10
11
4
5
10
11
LM339
U37D
LM339
13
U40A
LM339
U40D
LM339
13
U36A
LM339
U36D
LM339
13
U39A
LM339
U39D
LM339
13
U35A
LM339
U35D
LM339
13
U38A
LM339
U38D
LM339
13
2
2
2
2
2
2
+VCC
47R
R373
100n
C213
312
312
312
312
312
312
84
D32
C257
4148
47u/25V
U40E
U39E
U38E
U37E
U36E
U35E
U30C
NJM4580M
D33
7
6
LM339
LM339
LM339
LM339
LM339
LM339
4148
5
C258
47u/25V
PGND
U30B
NJM4580M
-VCC
R374
C214
R428
C284
R370
100K
R427
47R
100n
10K
10K
47u/25V
PGNDPGND
PGND
PGND
Titel
AMX140FX
VER0030722
54of
RevisionModel No:
Sheet
AMX140FX
18-Aug-2005
A2
Size
Date:
KEVIN LIN.
Drawn By:
AMX140FX.S03
File:
TR13
+VCC
HR
R350
120R
D
R351
470R
D1B
D1A
PGND
DA204K
DA204K
C
R352
470R
R87
10K
PGND
R353
120R
47u/25V
D31
4148
1
3
2
L-METER
U30A
D30
4148
HR
TR14
R367
100K
B
C283
R369
100K
NJM4580M
R368
100K
1 2 34
R-METER
A
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