Alto AMX-220MKII User manual

ServiceManual
www.altoproaudio.com
Version: 2.0
MODEL:AMX-220MKII/AMX-220FX MKII
Revised on Dec,2009

CONTENTS
1. Introduction……………………………………………………………………………………1
2. Specification…………………………………………………………………………………..2
3. Block Diagram………………………………………………………………………………...3
4. Schematic Diagram…………………………………………………………………………..4
5. PCB Layout…..….. ………………………………………………………………………….11
6. Wiring Diagram………………………………………………………………………………22
7. Exploded Views & Mechanical Parts List…………………………………………………23
8. BOM List……………………………………………………………………………………...26

The AMX-220MKII/AMX-220FX MKII mixing console is a professional compact mixer. You will get the smooth,
accurate more natural and open sound from this apparatus, and it is really ideal for gigs, recording and fixed PA
installations. The AMX-220MKII/AMX-220FX MKII mixing console is packed with some key features that can not
be found in other consoles of its size: 8 mono (these are provided with ultra low noise microphone preamplifiers
and phantom power at +48 Volt) and 4 stereo input channels, and each of them is provided with warm, natural EQ
(mono channels 1~8 are equipped with 3-band MID sweep EQ, stereo channels 9~16 are equipped with 4-band
fixed frequency EQ); highly accurate 12-segment bar graphic meters; 2-Track inputs assignable to Main Mix,
Phones/Control Room outputs etc.Besides, the 24-bit effect processorwith 256 effects (16 presets*16 variations)
is supplied specifically for AMX-220FX MKII. The AMX-220MKII/AMX-220FX MKII mixing console is designed for
professional application. It will provide the following features:
8 MIC input channels with gold plated XLR and balanced LINE inputs
4 stereo input channels with balanced TRS jacks
Ultra-low noise discrete MIC pre-amps with +48V Phantom power
Extremely high headroom offering more dynamic range
Insert on each of mono input channels
Switch-able Low-cut filter on each mono channel
+4dBu/-10dBV selector on each stereo channel
Warm, natural 4-band fixed frequency EQ on each stereo channel
3-band EQ with mid sweep (100Hz~8 KHz) on each mono channel
Peak LED on each channel
Mute/ALT 3-4, SOLO function on each channel
2 AUX Returns for additional functionality
Control Room and Phone outputs
2-Track inputs assignable to Main Mix, Control Room / Phones outputs
Highly accurate 12-segment bar graph meters
Additionally, the AMX-220FX is also equipped with following features:
24 bit digital effect processor
256effects(16presets *16 variations)
Effect on/off by means of MUTE switch or a footswitch connected to the DFX FOOTSWITCH jack.
1. Introduction
--- 1 ---

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 NoiseRated) 115dB
Line input Electronically balanced
Frequency response 10Hz to 55KHz,±3dB
Distortion (THD&N) 0.005% at +4dBu, 1KHz
Sensitivity range +15dBu to –45dBu
Line input unbalanced
Frequency response 10Hz to 55KHz,±3dB
Distortion (THD&N) 0.005% at +4dBu, 1KHz
Microphone input 1.4K ohm
Channel insert return 2.5K ohm
All other inputs 10Kohm or greater
Tape out 1K ohm
All other output 120 ohm
Hi shelving ±15dB @12KHz
Mid sweep ±15dB @100KHz~8KHz
HI-MID ±15dB @3KHz
MID-Low ±15dB @500Hz
Low shelving ±15dB @80Hz
A/D and D/A converters 24bit
DSP resolution 24bit
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
16-position PRESET Selector
16-position VARIATION Selector
PEAK LED
MUTE SWITCH with LED indicator
Fader 0 dB, channels muted:-100.0dBr (ref.:+4dBu)
Fader 0 dB,all input channels assigned and set to
UNITY gain:-90dBr(ref.:+4dBu)
+22dBu balanced XLR,
+22dBu unbalanced,1/4”jacks
AUX Return gain range OFF to +15dB
AUX Sends max out +22dBu
USA/ Canada 100-120V~,60Hz
Europe 210-230V~,50Hz
U.K/Australia 240V~,50Hz
Power Consumption 22watts
Dimension (W*D*H) 427mm X 412mm X 43mm
5.90kg for AMX-220MKII
5.98kg for AMX-220FX MKII
DSP Section
(For AMX-220FX MKII)
Physical
Main Mix Section
Main voltage
Power supply
(AC/AC Adaptor)
Net weight
Type of effects
Controls
Max output
Noise (Bus noise )
Mono input channels
Stereo input channels
Impedance
Equalization
2. Specification
--- 2 ---

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AMX-220MKII/220FX MKIIFX.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
10-Jun-2004 WEN XIANG.
ALTOMIXINGCONSOLE
11 of
AMX-220MKII//220FX MKII BLOCKDIAGRAM
A3
MONO INPUT CHANNELS ( 1-8)
2 1 3
MICIN
+48V
3-BANDEQ 12K100Hz-8kHz80
HI PASS
2
1 3
LO CUT
PEAK
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-2
RIGHT-BUS
LEFT-BUS AUX-1 AUX-2
STEREO INPUT CHANNELS(9-16)
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-2
LEFT-BUS RIGHT-BUS
21
3
EFX TO AUX-1 21
3
RIGHT-BUS LEFT-BUS
AUX-1 AUX-1
AUX-1
AUXSEND
AUX-2 MAINOUT LEFT-BUS
RIGHT-BUS
2TK TO MIX
RIGHT-BUS LEFT-BUS
TAPE IN
RIGHT
2TK
2TK
PHONESOUTPUT
LEFTMETER
RIGHT METER
75Hz
+/-15db
4-BAND EQ 12K50080
+/-15db
MAIN MIX
AUX SEND1
T R S
AUX SEND2
T R S
MAINMIXLEFT
T R S
MAINMIXRIGHT
T R S
CONTROL ROOM OUTPUT
LEFT
T R S
RIGHT
T R S
PHONES
T R S
&PHONES
CONTROLROOM
LEFT
TAPE OUT
2 1 3 2 1 3
LEVEL
AUX2/ DSP
STEREO AUXRETURN 1
AUX1 RETURN
-
+
R
PAN
PHANTOM
LINE IN
GAIN
-
+
POWER
-
+
-
+
-
+
LO (FREQ) HI
AUX1 AUX2
FADER
POST
PRE
BALANCE
AUX1
AUX2
FADER
PEAK
3c 5e 1a 4d 2b
LEFT(MONO)
3c 5e 1a 4d 2b
RIGHT
T
R
S
RN TN
T
R
S
RN TN
-
+
-
+
MICGAIN:0~60dB LINEINTRIM:+15dB~-45dB
AFL-L
AFL-R
SOLO(PFL)
SOLO
ON
()
AFL-L AFL-R
SOLO(PFL)
SOLO
ON
()
AFL-L AFL-R
SOLO(PFL)
EFX SEND
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-2
SOLO(PFL)
EFX SEND
AFL L AFL R SOLO(PFL) PFL LED
LOGIC
SOLOCTRL
SOLOACTIVE
(LEVEL SET)
RETURN
SOLOMODE
PFL
()
AFL
()
AUX2/ DSP
3c 5e 1a 4d 2b
INSERT
T
R
S
RN TN
ALT-3(L)
ALT-4(R) ALT-3(L) ALT-4(R)
ALT-4
ALT-3
ALT-4
ALT-3
AUX1
LEVEL
AUX2
LEVEL
+4dB/MIC +4dB/MIC
ALT-3(L)
ALT-4(R)
ALT3-4
LEVEL
ALT3-4OUT
ALT-3(L)
T R S
ALT-4(R)
T R S
ALT 3-4 TO MIX
RIGHT-BUS LEFT-BUS
ALT 3-4
MAINMIX CONTROL ROOM SOURCE
MAIN/ALT MAIN/ALT
1 2 1 2
POST
PRE
1 2 1 2
POST
PRE
POST
PRE
2TK
RIGHT
LEFT
MID
LO M-H HIL-M
3K
4-BAND EQ 12K50080
+/-15db
3K
AFL-L
AFL-R
3c 5e 1a 4d 2b
X8
JY-6351G-02-250
3c 5e 1a 4d 2b
X9
JY-6351G-02-250
3c 5e 1a 4d 2b
X10
JY-6351G-02-250
3c 5e 1a 4d 2b
X11
JY-6351G-02-250
R93 R94
DSP BOARD
DEF SENDDEF SEND
LOGIC
PRESETS
VARIATIONS
MUTE
DSP FOOTSWITCH
FX OUT L
FX OUT R
AMX-220MKII/220FXMKIIBLOCK DIAGRAM
3. Block Diagram
--- 3 ---

12345678910 11 12
A B C D
12
1110987654321
D
C B A
5 67
U9B
NJM4580M
R145
62K
R169
20K
C169
47u/25V
C137
0.22u/50V
C142
0.22u/50V
C141
0.22u/50V
R161
6K8
1 2 3
SW1A
PS-22E85L
4 5 6
P
SW1B
PS-22E85L
LO CUT
3c 5e 1a 4d 2b
X13
JY-6351G-02-250
T
R
S
RN TN
INSERT1
5 67
U10B
NJM4580M
R146
62K
R138
1K3
R170
20K
C170
47u/25V
C138
0.22u/50V
C144
0.22u/50V
C143
0.22u/50V
R162
6K8
1 2 3
SW2A
PS-22E85L
4 5 6
P
SW2B
PS-22E85L
LO CUT
3c 5e 1a 4d 2b
X14
JY-6351G-02-250
T
R
S
RN TN
INSERT2
5 67
U11B
NJM4580M
R147
62K
R139
1K3
R171
20K
C171
47u/25V
C139
0.22u/50V
C146
0.22u/50V
C145
0.22u/50V
R163
6K8
1 2 3
SW3A
PS-22E85L
4 5 6
P
SW3B
PS-22E85L
LO CUT
3c 5e 1a 4d 2b
X15
JY-6351G-02-250
T
R
S
RN TN
INSERT3
5 67
U12B
NJM4580M
R148
62K
R140
1K3
R172
20K
C172
47u/25V
C140
0.22u/50V
C148
0.22u/50V
C147
0.22u/50V
R164
6K8
1 2 3
SW4A
PS-22E85L
4 5 6
P
SW4B
PS-22E85L
LO CUT
3c 5e 1a 4d 2b
X16
JY-6351G-02-250
T
R
S
RN TN
INSERT4
U1~ U16=
MIC GAIN=-10~-60dB
LINE IN GAIN=+10~-40dB
C174
47u/25V
C173
47u/25V
C175
47u/25V
C176
47u/25V
VR1 O10K
C1
470P C97
22u/35V
R33 11K0
LINE IN1
MIC 1 C113
47u/63V R49
3K60
R65 6K81 1/4W
PH LED
C9
470P
R66
6K81 1/4W
C114
47u/63V
C25
47P
R34
11K0 R50
3K60
C98
22u/35V
R19 51K1
R17
51K1
C2
470P
2 1 3 4
X1 SMC-6.02
R106
5K11
R107
5K11
C67 22P C66
22P
R90
10K0
R81
27R
C129
1000u/10V
3 21
U1A
4580M R89
10K0 R105
5K11
C65 22P R117
5K11
C77
22P
C161
47u/25V
R153
20K
3c 5e 1a 4d 2b
X9
JY-6351G-02-250
5 67
U1B
4580M
3 21
U9A 4580M
R1 4R7
R2
4R7
VR2 O10K
C3
470P
C99
22u/35V R35
11K0
LINE IN2
MIC 2
C115
47u/63V
R51
3K60
R67
6K81 1/4W
PH LED
C10
470P
R68
6K81 1/4W
C116
47u/63V
C26
47P
R36
11K0 R52
3K60
C100
22u/35V
R27
51K1
R25
51K1
C4
470P
2 1 3 4
X2 SMC-6.02
R109
5K11
R110
5K11
C70 22P
C69
22P
R92
10K0
R82 27R
C130
1000u/10V
3 21
U2A
4580M R91
10K0 R108
5K11
C68 22P
R118
5K11
C78 22P
C162
47u/25V
R154
20K
3c 5e 1a 4d 2b
X10
JY-6351G-02-250
5 67
U2B
4580M
3 21
U10A
4580M
R3
4R7
R4 4R7
VR3 O10K
C5
470P
C101
22u/35V R37
11K0
LINE IN3
MIC 3
C117
47u/63V
R53
3K60
R69
6K81 1/4W
PH LED
C11
470P
R70
6K81 1/4W
C118
47u/63V
C27 47P
R38 11K0 R54
3K60
C102
22u/35V
R20
51K1
R18
51K1
C6
470P
2 1 3 4
X3 SMC-6.02
R112
5K11
R113
5K11
C73 22P
C72
22P
R94
10K0
R83
27R
C131
1000u/10V
3 21
U3A
4580M R93
10K0 R111
5K11
C71 22P
R119
5K11
C79 22P
C163
47u/25V
R155
20K
3c 5e 1a 4d 2b
X11
JY-6351G-02-250
5 67
U3B
4580M
3 21
U11A
4580M
R5
4R7
R6 4R7
VR4 O10K
C7
470P
C103
22u/35V R39
11K0
MIC 4
C119
47u/63V
R55
3K60
R71
6K81 1/4W
PH LED
C12
470P
R72
6K81 1/4W
C120
47u/63V
C28
47P
R40 11K0 R56
3K60
C104
22u/35V
R28
51K1
R26
51K1
C8
470P
2 1 3 4
X4 SMC-6.02
R115
5K11
R116
5K11
C76 22P
C75
22P
R96
10K0
R84
27R
C132
1000u/10V
3 21
U4A
4580M R95
10K0 R114
5K11
C74 22P R120
5K11
C80 22P
C164
47u/25V
R156
20K
3c 5e 1a 4d 2b
X12
JY-6351G-02-250
5 67
U4B
4580M
3 21
U12A
4580M
R7
4R7
R8 4R7
LINE IN4
NJM4580M
R137
1K3
5 67
U13B
NJM4580M
R149
62K
R173
20K
C177
47u/25V
C151
0.22u/50V
C150
0.22u/50V
C149
0.22u/50V
R165
6K8
1 2 3
SW5A
PS-22E85L
4 5 6
P
SW5B
PS-22E85L
LO CUT
3c 5e 1a 4d 2b
X21
JY-6351G-02-250
T
R
S
RN TN
INSERT5
5 67
U14B
NJM4580M
R150
62K
R142
1K3
R174
20K
C178
47u/25V
C154
0.22u/50V
C153
0.22u/50V
C152
0.22u/50V
R166
6K8
1 2 3
SW6A
PS-22E85L
4 5 6
P
SW6B
PS-22E85L
LO CUT
3c 5e 1a 4d 2b
X22
JY-6351G-02-250
T
R
S
RN TN
INSERT6
5 67
U15B
NJM4580M
R151
62K
R143
1K3
R175
20K
C179
47u/25V
C157
0.22u/50V
C156
0.22u/50V
C155
0.22u/50V
R167
6K8
1 2 3
SW7A
PS-22E85L
4 5 6
P
SW7B
PS-22E85L
LO CUT
3c 5e 1a 4d 2b
X23
JY-6351G-02-250
T
R
S
RN TN
INSERT7
5 67
U16B
NJM4580M
R152
62K
R144
1K3
R176
20K
C180
47u/25V
C160
0.22u/50V
C159
0.22u/50V
C158
0.22u/50V
R168
6K8
1 2 3
SW8A
PS-22E85L
4 5 6
P
SW8B
PS-22E85L
LO CUT
3c 5e 1a 4d 2b
X24
JY-6351G-02-250
T
R
S
RN TN
INSERT8
MIC GAIN=-10~-60dB
LINE IN GAIN=+10~-40dB
C182
47u/25V
C181
47u/25V
C183
47u/25V
C184
47u/25V
VR5 O10K
C13
470P C105
22u/35V
R41 11K0
LINE IN5
MIC 5 C121
47u/63V R57
3K60
R73 6K81 1/4W
PH LED
C20
470P
R74
6K81 1/4W
C122
47u/63V
C32
47P
R42
11K0 R58
3K60
C106
22u/35V
R21 51K1
R22
51K1
C21
470P
2 1 3 4
X5 SMC-6.02
R122
5K11
R123
5K11
C82 22P C81
22P
R98
10K0
R85
27R
C133
1000u/10V
3 21
U5A
4580M R97
10K0 R121
5K11
C89 22P R133
5K11
C90
22P
C165
47u/25V
R157
20K
3c 5e 1a 4d 2b
X17
JY-6351G-02-250
5 67
U5B
4580M
3 21
U13A 4580M
R13 4R7
R9
4R7
VR6 O10K
C14
470P
C107
22u/35V R43
11K0
LINE IN6
MIC 6
C123
47u/63V
R59
3K60
R75
6K81 1/4W
PH LED
C22
470P
R76
6K81 1/4W
C124
47u/63V
C29
47P
R44
11K0 R60
3K60
C108
22u/35V
R29
51K1
R30
51K1
C15
470P
2 1 3 4
X6 SMC-6.02
R125
5K11
R126
5K11
C84 22P
C83
22P
R100
10K0
R86 27R
C134
1000u/10V
3 21
U6A
4580M R99
10K0 R124
5K11
C91 22P
R134
5K11
C92 22P
C166
47u/25V
R158
20K
3c 5e 1a 4d 2b
X18
JY-6351G-02-250
5 67
U6B
4580M
3 21
U14A
4580M
R14
4R7
R10 4R7
VR7 O10K
C16
470P
C109
22u/35V R45
11K0
LINE IN7
MIC 7
C125
47u/63V
R61
3K60
R77
6K81 1/4W
PH LED
C23
470P
R78
6K81 1/4W
C126
47u/63V
C30 47P
R46 11K0 R62
3K60
C110
22u/35V
R24
51K1
R23
51K1
C17
470P
2 1 3 4
X7 SMC-6.02
R128
5K11
R129
5K11
C86 22P
C85
22P
R102
10K0
R87
27R
C135
1000u/10V
3 21
U7A
4580M R101
10K0 R127
5K11
C93 22P
R135
5K11
C94 22P
C167
47u/25V
R159
20K
3c 5e 1a 4d 2b
X19
JY-6351G-02-250
5 67
U7B
4580M
3 21
U15A
4580M
R15
4R7
R11 4R7
VR8 O10K
C18
470P
C111
22u/35V R47
11K0
MIC 8
C127
47u/63V
R63
3K60
R79
6K81 1/4W
PH LED
C24
470P
R80
6K81 1/4W
C128
47u/63V
C31
47P
R48 11K0 R64
3K60
C112
22u/35V
R32
51K1
R31
51K1
C19
470P
2 1 3 4
X8 SMC-6.02
R131
5K11
R132
5K11
C88 22P
C87
22P
R104
10K0
R88
27R
C136
1000u/10V
3 21
U8A
4580M R103
10K0 R130
5K11
C95 22P R136
5K11
C96 22P
C168
47u/25V
R160
20K
3c 5e 1a 4d 2b
X20
JY-6351G-02-250
5 67
U8B
4580M
3 21
U16A
4580M
R16
4R7
R12 4R7
LINE IN8
R141
1K3
84
U2C
84
U8C
84
U1C
84
U6C
C34 100n
C35 100n
+VCC
-VCC
C33 100n
C36
100n
84
U7C
C42 100n
C45 100n
C43 100n
C46 100n
C47 100n
C50 100n
84
U5C
84
U3C
84
U4C
C37 100n
C39 100n
C38 100n
C40 100n
C41 100n
C44 100n
84
U10C
84
U16C
84
U9C
84
U14C
C49 100n
C51 100n
C48 100n
C52
100n
84
U15C
C59 100n
C62 100n
C60 100n
C63 100n
C61 100n
C64 100n
84
U13C
84
U11C
84
U12C
C53 100n
C56 100n
C54 100n
C57 100n
C55 100n
C58 100n
RTN-CH1 RTN-CH2 RTN-CH3 RTN-CH4
RTN-CH5 RTN-CH6 RTN-CH7 RTN-CH8
1 2 3 4 5 6 7 8 9 10 11 12
CN1
2.0-12P
(TO AMX-220FXMN2)
RTN-CH1 RTN-CH2 RTN-CH3 RTN-CH4 RTN-CH5 RTN-CH6 RTN-CH7 RTN-CH8
+VCC -VCC GND PGND
(TO AMX-220FXPU1)
+VCC -VCC GND PGND
(TO AMX-220FXMN2)
AMX-220MKII/220FX MKII PU2
+VCC
+VCC
-VCC GND PGND
-VCC GND PGND
RTN-CH1 RTN-CH2 RTN-CH3
RTN-CH4
RTN-CH5 RTN-CH6 RTN-CH7 RTN-CH8
PH LED PH PWR
1 2 3 4 5 6 7 8
CN2
CN2.0-8P
1 2 3 4 5 6 7 8
CN3
CN2.0-8P
D1 10MM
PH LED
AMX-220MKII/220FX MKIIPU2.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
1-Sep-2004 WEN XIANG
AMX-220MKII/220FXMKII SCHEMATIC DIAGRAM
11of
AMX-220MKII/220FX MKIIPU2VER040828
A3
4. Schematic Diagram
--- 4 ---

12345678
A B C D
8
7654321
D
C B A
+VCC
-VCC
84
U1C
4580M
C33 100N
C37
100N
3c 5e 1a 4d 2b
X4
JY-6351G-02-250
T
R
S
RN TN
LINE IN 9
3c 5e 1a 4d 2b
X5
JY-6351G-02-250
T
R
S
RN TN
LEFT
RIGHT
3 21
U1A
4580M
R2
10K
C1
22P
C43
47u/25V
R4
10K
C2
22P
R1
10K
C17
100P
R3
10K
C18
100P
5 67
U1B
4580M
R6
10K
C3 22P
C44
47u/25V
R8
10K
C4
22P
R5
10K
C19
100P
R7
10K
C20
100P
R71
20K
R72
20K
3c 5e 1a 4d 2b
X6
JY-6351G-02-250
T
R
S
RN TN
3c 5e 1a 4d 2b
X7
JY-6351G-02-250
T
R
S
RN TN
3 21
U2A
4580M
R10
10K
C5 22P
C45
47u/25V
R12
10K
C6
22P
R9
10K
C21
100P
R11
10K
C22 100P
5 67
U2B
4580M
R14
10K
C7 22P
C46
47u/25V
R16
10K
C8
22P
R13
10K
C23 100P
R15
10K
C24
100P
R73
20K
R74
20K
TP7 TP8 TP9 TP10
3c 5e 1a 4d 2b
X18
JY-6351G-02-250
T
R
S
RN TN
3c 5e 1a 4d 2b
X19
JY-6351G-02-250
T
R
S
RN TN
3 21
U4A
4580M
R28
10K
C13 22P
C51
47u/25V
R30
10K
C14
22P
R27
10K
C29
100P
R29
10K
C30 100P
5 67
U4B
4580M
R32
10K
C15 22P
C52
47u/25V
R34
10K
C16
22P
R31
10K
C31 100P
R33
10K
C32
100P
R77
20K
R78
20K
TP11 TP12
LINE IN 10 LINE IN 11
LEFT(MONO)
RIGHT
LINE IN 12
LINE IN 15
LEFT(MONO)
RIGHT
LINE IN 16
3c 5e 1a 4d 2b
X8
JY-6351G-02-250
STEREO AUX
LEFT 1
3c 5e 1a 4d 2b
X9
JY-6351G-02-250
RIGHT 1
RETURN2
STEREO AUX
RETURN1
3c 5e 1a 4d 2b
X10
JY-6351G-02-250
3c 5e 1a 4d 2b
X11
JY-6351G-02-250
RIGHT 2
LEFT 2
(MONO / MASTER)
AUX-RTN1-L AUX-RTN1-R AUX-RTN2-L AUX-RTN2-R
3c 5e 1a
4d 2b
X12
JY-6351G-02-250
AUX SEND1
R43 120R
R44 120R
3c 5e 1a
4d 2b
X13
JY-6351G-02-250
AUX SEND2
R45
120R
R46
120R
T
R
S
RN TN
T
R
S
RN TN
AUX-SEND1 AUX-SEND2
3c 5e 1a
4d 2b
X14
JY-6351G-02-250
R48 120R
R47
120R CTRL ROOM OUT
3c 5e 1a
4d 2b
X15
JY-6351G-02-250
R50 120R
R49
120R
LEFT
RIGHT
CTRL-R-L CTRL-R-R
R81
1K
R82
1K
L(WHITE)
R(RED)
TAPE IN TAPE OUT
1 4 2 5
3
6
X3
SCP6873NS3232
2TK-IN-L 2TK-IN-R MAIN-R-2 MAIN-L-2
3 21
U6A
BA15218N
5 67
U6B
BA15218N
C64
22P
R24
10K
R53
120R
3c 5e 1a
4d 2b
X20
JY-6351G-02-250
R54
120R
PHONES
R52
120R
R51 120R
3 21
U5A
BA15218N
5 67
U5B
BA15218N
R23
10K
C63
22P
CTRL-R-L CTRL-R-R
R41
2K
SW4A
PS-22E85L
R42
2K
SW4B
PS-22E85L
R37
2K
SW2A
PS-22E85L
R38
2K
SW2B
PS-22E85L
R35
2K
SW1A
PS-22E85L
R36
2K
SW1B
PS-22E85L
84
U3C
4580M
84
U4C
4580M
84
U2C
4580M
(LEVEL +4dBu/-10dBv) (LEVEL +4dBu/-10dBv)
(LEVEL +4dBu/-10dBv) (LEVEL +4dBu/-10dBv)
(LEVEL +4dBu/-10dBv)
(LEVEL +4dBu/-10dBv)
PRE-CH9 PRE-CH10 PRE-CH11 PRE-CH12
PRE-CH15 PRE-CH16
C34 100N
C38 100N
C35 100N
C39
100N
C36 100N
C40 100N
84
U5C
BA15218N
84
U6C
BA15218N
R79
47R
R80
47R
C47
47u/25V
C48
47u/25V
C41 100N
C42 100N
+VCC
-VCC
1 2 3 4 5 6 7 8 9 10 11 12
CN2
2.0-12P
(TO AMX-220FXMN1)
1 2 3 4 5 6 7 8 9 10 11 12
CN1
2.0-12P
(TO AMX-220FXMN1)
AUX-RTN1-L AUX-RTN1-R AUX-RTN2-L AUX-RTN2-R AUX-SEND1 AUX-SEND2 CTRL-R-L CTRL-R-R 2TK-IN-L 2TK-IN-R
3c 5e 1a
4d 2b
X23
JY-6351G-02-250
T
R
S
RN TN MAIN R (UNBAL)
3c 5e 1a
4d 2b
X24
JY-6351G-02-250
T
R
S
RN TN MAIN L (UNBAL)
R64
120R
R63
120R
R66
120R
R65
120R
3c 5e 1a
4d 2b
X21
JY-6351G-02-250
T
R
S
RN TN
ALT-3 (LEFT)
3c 5e 1a
4d 2b
X22
JY-6351G-02-250
T
R
S
RN TN
ALT-4 (RIGHT)
R56
120R
R55
120R
R58
120R
R57
120R
(BALANCED)
2 1 3
X1
JY-5030-030G
2 1 3
X2
JY-5030-030G
MAIN OUT
RIGHT
LEFT
1 2 3
SW5A
PS-42E85L
4 5 6
P
SW5B
PS-42E85L
7 8 9
P
SW5C
PS-42E85L
10 11 12
P
SW5D
PS-42E85L
R59 120R
R60
120R
R83 5K1
R61
120R
R62
120R
R84 5K1
R67
120R
R68
120R
R85 5K1
R69
120R
R70
120R
R865K1
PRE-CH16 PRE-CH15 PRE-CH14 PRE-CH13
PRE-CH16 PRE-CH15
(TO AMX-220FXMN1)
1 2 3 4 5 6 7 8 9 10 11 12
CN3
2.0-12P
PRE-CH14 PRE-CH13 PRE-CH12 PRE-CH11 PRE-CH10 PRE-CH9
PRE-CH12 PRE-CH11 PRE-CH10
PRE-CH9
D1 1N4002 D2 1N4002
ZD1 1N5261
C53 47uF/100V
D4 1N4002 D3 1N4002
C54
47uF/100V
TR1
7815A
C57
2200uF/25V
PGND
C59 1000u/25V
D5 RLS4148
C58
2200uF/25V
C60 1000u/25V
D6 RLS4148
C61
100uF/100V
PGND
R87 390K
C56 47uF/100V
R88 10K
R89 10R R90
20K
C55
47uF/100V
TR3 TIP122
+VCC
-VCC
PH PWR
TR2 7915A
PHANTOM PWR
(47V 0.5W)
CN6 AC IN
SW9
CN2.5-2P-90
PGND R91
0R0
PHANTOM
SW10
CN2.5-2P-90
TR4 7805
PGND
+5V
C62 1000uF/16V
PGNDDGND
R92 0R0
3c 5e 1a 4d 2b
X16
JY-6351G-02-250
T
R
S
RN TN
3c 5e 1a 4d 2b
X17
JY-6351G-02-250
T
R
S
RN TN
3 21
U3A
4580M
R25
10K
C11 22P
C49
47u/25V
R19
10K
C9
22P
R17
10K
C25
100P
R18
10K
C26 100P
5 67
U3B
4580M
R26
10K
C12 22P
C50
47u/25V
R22
10K
C10
22P
R20
10K
C27 100P
R21
10K
C28
100P
R75
20K
R76
20K
TP5 TP6
LINE IN 13
LEFT(MONO)
RIGHT
LINE IN 14
R39
2K
SW3A
PS-22E85L
R40
2K
SW3B
PS-22E85L (LEVEL +4dBu/-10dBv)
(LEVEL +4dBu/-10dBv)
PRE-CH13 PRE-CH14
1 2 3 4 5 6 7 8 9 10 11 12
CN5
2.0-12P
(TO AMX-220FXMN1)
EFXRTN-L
EFXRTN-R
R93 R94
EFXRTN-R EFXRTN-L
3c 5e 1a
4d 2b
X25
JY-6351G-02-250
FOOTSWITCH
AMX-220MKII/220FX MKII PU1
+VCC
-VCC
+5V
GND
DGND
PGND
PH PWR
+VCC -VCC +5V GND DGND PGND
ALT3-L ALT4-R MAIN-R-2 MAIN-R-3 MAIN-L-2 MAIN-L-3 EFXRTN-L EFXRTN-R
FOOTSWITCH-1a
FOOTSWITCH-1a
ALT3-L ALT4-R MAIN-R-2 MAIN-R-3 MAIN-L-2 MAIN-L-3
+VCC
-VCC
GND
PGND
(TO AMX-220FXPU2)
1 2 3 4 5 6 7 8
CN4
2.0-8P
+VCC -VCC GND PGND
PH PWR PH PWR
C235 100P C68
47u/25V
TP25 TP24 TP23 TP26
C234 100P C67
47u/25V
C236 100P C71
47u/25V
C237 100P C72
47u/25V
C65
47u/25V
C66
47u/25V
C70
47u/25V
C69
47u/25V
R100
10K
R102 10K R103 10K
R101 10K
3 21
U8A 4580M
5 67
U8B
4580M
3 21
U9A 4580M
5 67
U9B 4580M
C77
22P
C79 22P
C78 22P
C80 22P
R159
12K
R162 12K
R160 6.8K R161 6.8K
84
U8C
4580M
84
U9C
4580M
C73 100N
C74
100N
C75 100N
C76 100N
C81
2200uF/25V
C82
2200uF/25V
AMX-220MKII/220FX MKIIPU1.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
1-Sep-2004 WEN XIANG
AMX-220MKII/220FX MKII SCHEMATIC DIAGRAM
11of
AMX-220MKII/220FX MKIIPU1VER040828
A3
--- 5 ---

12345678910 11 12
A B C D
12
1110987654321
D
C B A
R104
5K1
VR74
W50K
AUX-1
R281
47K
R245
4K7
C249
2.2u/50V R217
6K8
TR1
BR
TR2
BR
R317
1K5
+VCC
LD13
RED
R97
5K1
3 21
U9A
4580M
VR53A
10KD
PEAK
R301 68K
C137
22P
VR73
W50K
C209
47u/25V
R103
5K1
AUX-2
LEVEL
AUX-POST
R101
20K
R102
20K
LEFT-BUS
RIGHT-BUS
PAN
PGND
AUX-PRE
J1_1
POST (PRE)
21
3
SW2A
PS-42E85L
54
6
SW2B
PS-42E85L
87
9
SW2C
PS-42E85L
ALT-3 ALT-4
21
3
SW1A
PS-22E85L
54
6
SW1B
PS-22E85L
21
3
SW3A
PS-42E85L
54
6
SW3B
PS-42E85L
87
9
SW3C
PS-42E85L
11 10
12
SW3D
PS-42E85L
AFL-L AFL-R
R329
27K
R330
27K
AUX1 PRE/POST
SW2:MUTE/ALT3-4 SW3:SOLO,PFL
R37
10K
SOLO(PFL)
D1
BAS316
LOGIC
LD1 YEL
(SOLO)
R181
2K2
-VCC
(LOGIC=2.0V or 0.5V)
C206
47u/25V
R108
5K1
VR76
W50K
AUX-1
R282
47K
R246
4K7
C250
2.2u/50V R218
6K8
TR3
BR
TR4
BR
R318
1K5
+VCC
LD14
RED
R98
5K1
3 21
U10A
4580M
VR54A
10KD
PEAK
R302 68K
C138
22P
VR75
W50K
C210
47u/25V
R107
5K1
AUX-2
LEVEL
AUX-POST
R105
20K
R106
20K
LEFT-BUS
RIGHT-BUS
PAN
PGND
AUX-PRE
J2_1
POST (PRE)
21
3
SW5A
PS-42E85L
54
6
SW5B
PS-42E85L
87
9
SW5C
PS-42E85L
ALT-3 ALT-4
21
3
SW4A
PS-22E85L
54
6
SW4B
PS-22E85L
21
3
SW6A
PS-42E85L
54
6
SW6B
PS-42E85L
87
9
SW6C
PS-42E85L
11 10
12
SW6D
PS-42E85L
AFL-L AFL-R
R331
27K
R332
27K
AUX1 PRE/POST
SW5:MUTE/ALT3-4 SW6:SOLO,PFL
R38
10K
SOLO(PFL)
D2
BAS316
LOGIC
LD2 YEL
(SOLO)
R182
2K2
-VCC
(LOGIC=2.0V or 0.5V)
C207
47u/25V
R112
5K1
VR78
W50K
AUX-1
R283
47K
R247
4K7
C251
2.2u/50V R219
6K8
TR5
BR
TR6
BR
R319
1K5
+VCC
LD15
RED
R99
5K1
3 21
U11A
4580M
VR55A
10KD
PEAK
R303 68K
C139
22P
VR77
W50K
C211
47u/25V
R111
5K1
AUX-2
LEVEL
AUX-POST
R109
20K
R110
20K
LEFT-BUS
RIGHT-BUS
PAN
PGND
AUX-PRE
J3_1
POST (PRE)
21
3
SW8A
PS-42E85L
54
6
SW8B
PS-42E85L
87
9
SW8C
PS-42E85L
ALT-3 ALT-4
21
3
SW7A
PS-22E85L
54
6
SW7B
PS-22E85L
21
3
SW9A
PS-42E85L
54
6
SW9B
PS-42E85L
87
9
SW9C
PS-42E85L
11 10
12
SW9D
PS-42E85L
AFL-L AFL-R
R333
27K
R334
27K
AUX1 PRE/POST
SW8:MUTE/ALT3-4 SW9:SOLO,PFL
R39
10K
SOLO(PFL)
D3
BAS316
LOGIC
LD3 YEL
(SOLO)
R183
2K2
-VCC
(LOGIC=2.0V or 0.5V)
C208
47u/25V
R116
5K1
VR80
W50K
AUX-1
R284
47K
R248
4K7
C252
2.2u/50V R220
6K8
TR7
BR
TR8
BR
R320
1K5
+VCC
LD16
RED
R100
5K1
3 21
U12A
4580M
VR56A
10KD
PEAK
R304 68K
C140
22P
VR79
W50K
C212
47u/25V
R115
5K1
AUX-2
LEVEL
AUX-POST
R113
20K
R114
20K
LEFT-BUS
RIGHT-BUS
PAN
PGND
AUX-PRE
J4_1
POST (PRE)
21
3
SW11A
PS-42E85L
54
6
SW11B
PS-42E85L
87
9
SW11C
PS-42E85L
ALT-3 ALT-4
21
3
SW10A
PS-22E85L
54
6
SW10B
PS-22E85L
21
3
SW12A
PS-42E85L
54
6
SW12B
PS-42E85L
87
9
SW12C
PS-42E85L
11 10
12
SW12D
PS-42E85L
AFL-L AFL-R
R335
27K
R336
27K
AUX1 PRE/POST
SW11:MUTE/ALT3-4 SW12:SOLO,PFL
R40
10K
SOLO(PFL)
D4
BAS316
LOGIC
LD4
YEL
(SOLO)
R184
2K2
-VCC
(LOGIC=2.0V or 0.5V)
84
U3C
4580M
84
U6C
4580M
84
U2C
4580M
84
U5C
4580M
84
U8C
4580M
84
U11C
4580M
84
U12C
4580M
84
U9C
4580M
84
U1C
4580M
84
U4C
4580M
84
U7C
4580M
84
U10C
4580M
C81 100n
C84 100n
C82 100n
C85 100n
C83 100n
C86 100n
C87 100n
C90 100n
C88 100n
C91 100n
C89 100n
C92 100n
C93 100n
C96 100n
C94 100n
C97 100n
C95 100n
C98 100n
C99 100n
C102 100n
C100 100n
C103 100n
C101 100n
C104 100n
+VCC
-VCC
LOGIC LOGIC
LOGIC LOGIC
EQ HI (12K)
C17
6.8n VR17
B50K
R169 5K6
VR25
B50K
R165 5K6 LO (80Hz)
R33 10K
5 67
U9B
4580M
R193
1M
C29
22P
R85
3K9
VR9
B50K MID (FREQ=100Hz-8K)
C65
33n C69
33n
C5
6.8n
C205
47u/25V
C201
47u/25V
RTN-CH1 RTN-CH1
5 67
U1B
4580M
3 21
U1A
4580M
R26
10K R25
10K
C25
22P
C57
1.5n
R93
5K1
R1
3K
VR1B
500KC
VR1A
500KC
R13
6K2
C1 6.8n
R9 6K2
EQ HI (12K)
C18
6.8n VR18
B50K
R170 5K6
VR26
B50K
R166 5K6 LO (80Hz)
R34 10K
5 67
U10B
4580M
R194
1M
C30
22P
R86
3K9
VR10
B50K MID (FREQ=100Hz-8K)
C66
33n C70
33n
C6
6.8n
C202
47u/25V
RTN-CH2 RTN-CH2
5 67
U2B
4580M
3 21
U2A
4580M
R28
10K R27
10K
C26
22P
C58
1.5n
R94
5K1
R2
3K
VR2B
500KC
VR2A
500KC
R14
6K2
C2 6.8n
R10 6K2
EQ HI (12K)
C19
6.8n VR19
B50K
R171 5K6
VR27
B50K
R167 5K6 LO (80Hz)
R35 10K
5 67
U11B
4580M
R195
1M
C31
22P
R87
3K9
VR11
B50K MID (FREQ=100Hz-8K)
C67
33n C71
33n
C7
6.8n
C203
47u/25V
RTN-CH3 RTN-CH3
5 67
U3B
4580M
3 21
U3A
4580M
R30
10K R29
10K
C27
22P
C59
1.5n
R95
5K1
R3
3K
VR3B
500KC
VR3A
500KC
R15
6K2
C3 6.8n
R11 6K2
EQ HI (12K)
C20
6.8n VR20
B50K
R172 5K6
VR28
B50K
R168 5K6 LO (80Hz)
R36 10K
5 67
U12B
4580M
R196
1M
C32
22P
R88
3K9
VR12
B50K MID (FREQ=100Hz-8K)
C68
33n C72
33n
C8
6.8n
C204
47u/25V
RTN-CH4 RTN-CH4
5 67
U4B
4580M
3 21
U4A
4580M
R32
10K R31
10K
C28
22P
C60
1.5n
R96
5K1
R4
3K
VR4B
500KC
VR4A
500KC
R16
6K2
C4 6.8n
R12 6K2
R128
5K1
VR82
W50K
AUX-1
R285
47K
R257
4K7
C253
2.2u/50V R221
6K8
TR9
BR
TR10
BR
R321
1K5
+VCC
LD17
RED
R121
5K1
3 21
U13A
4580M
VR57A
10KD
PEAK
R305 68K
C141
22P
VR81
W50K
C221
47u/25V
R127
5K1
AUX-2
LEVEL
AUX-POST
R125
20K
R126
20K
LEFT-BUS
RIGHT-BUS
PAN
PGND
AUX-PRE
J5_1
POST (PRE)
21
3
SW33A
PS-42E85L
54
6
SW33B
PS-42E85L
87
9
SW33C
PS-42E85L
ALT-3 ALT-4
21
3
SW32A
PS-22E85L
54
6
SW32B
PS-22E85L
21
3
SW34A
PS-42E85L
54
6
SW34B
PS-42E85L
87
9
SW34C
PS-42E85L
11 10
12
SW34D
PS-42E85L
AFL-L AFL-R
R337
27K
R338
27K
AUX1 PRE/POST
SW33:MUTE/ALT3-4 SW34:SOLO,PFL
R53
10K
SOLO(PFL)
D5
BAS316
LOGIC
LD5
YEL
(SOLO)
R185
2K2
-VCC
(LOGIC=2.0V or 0.5V)
LOGIC
EQ HI (12K)
C21
6.8n VR21
B50K
R177 5K6
VR29
B50K
R173 5K6 LO (80Hz)
R43 10K
5 67
U13B
4580M
R197
1M
C37
22P
R89
3K9
VR13
B50K MID (FREQ=100Hz-8K)
C73
33n C77
33n
C13
6.8n
C217
47u/25V
C213
47u/25V
RTN-CH5 RTN-CH5
5 67
U5B
4580M
3 21
U5A
4580M
R42
10K R41
10K
C33
22P
C61
1.5n
R117
5K1
R5
3K
VR5B
500KC
VR5A
500KC
R21
6K2
C9 6.8n
R17 6K2
R132
5K1
VR84
W50K
AUX-1
R286
47K
R258
4K7
C254
2.2u/50V R222
6K8
TR11
BR
TR12
BR
R322
1K5
+VCC
LD18
RED
R122
5K1
3 21
U14A
4580M
VR58A
10KD
PEAK
R306 68K
C142
22P
VR83
W50K
C222
47u/25V
R131
5K1
AUX-2
LEVEL
AUX-POST
R129
20K
R130
20K
LEFT-BUS
RIGHT-BUS
PAN
PGND
AUX-PRE
J6_1
POST (PRE)
21
3
SW36A
PS-42E85L
54
6
SW36B
PS-42E85L
87
9
SW36C
PS-42E85L
ALT-3 ALT-4
21
3
SW35A
PS-22E85L
54
6
SW35B
PS-22E85L
21
3
SW37A
PS-42E85L
54
6
SW37B
PS-42E85L
87
9
SW37C
PS-42E85L
11 10
12
SW37D
PS-42E85L
AFL-L AFL-R
R339
27K
R340
27K
AUX1 PRE/POST
SW36:MUTE/ALT3-4 SW37:SOLO,PFL
R54
10K
SOLO(PFL)
D6
BAS316
LOGIC
LD6
YEL
(SOLO)
R186
2K2
-VCC
(LOGIC=2.0V or 0.5V)
LOGIC
EQ HI (12K)
C22
6.8n VR22
B50K
R178 5K6
VR30
B50K
R174 5K6 LO (80Hz)
R46 10K
5 67
U14B
4580M
R198
1M
C38
22P
R90
3K9
VR14
B50K MID (FREQ=100Hz-8K)
C74
33n C78
33n
C14
6.8n
C218
47u/25V
C214
47u/25V
RTN-CH6 RTN-CH6
5 67
U6B
4580M
3 21
U6A
4580M
R45
10K R44
10K
C34
22P
C62
1.5n
R118
5K1
R6
3K
VR6B
500KC
VR6A
500KC
R22
6K2
C10 6.8n
R18 6K2
R136
5K1
VR86
W50K
AUX-1
R287
47K
R259
4K7
C255
2.2u/50V R223
6K8
TR13
BR
TR14
BR
R323
1K5
+VCC
LD19
RED
R123
5K1
3 21
U15A
4580M
VR59A
10KD
PEAK
R307 68K
C143
22P
VR85
W50K
C223
47u/25V
R135
5K1
AUX-2
LEVEL
AUX-POST
R133
20K
R134
20K
LEFT-BUS
RIGHT-BUS
PAN
PGND
AUX-PRE
J7_1
POST (PRE)
21
3
SW39A
PS-42E85L
54
6
SW39B
PS-42E85L
87
9
SW39C
PS-42E85L
ALT-3 ALT-4
21
3
SW38A
PS-22E85L
54
6
SW38B
PS-22E85L
21
3
SW40A
PS-42E85L
54
6
SW40B
PS-42E85L
87
9
SW40C
PS-42E85L
11 10
12
SW40D
PS-42E85L
AFL-L AFL-R
R341
27K
R342
27K
AUX1 PRE/POST
SW39:MUTE/ALT3-4 SW40:SOLO,PFL
R55
10K
SOLO(PFL)
D7
BAS316
LOGIC
LD7
YEL
(SOLO)
R187
2K2
-VCC
(LOGIC=2.0V or 0.5V)
LOGIC
EQ HI (12K)
C23
6.8n VR23
B50K
R179 5K6
VR31
B50K
R175 5K6 LO (80Hz)
R51 10K
5 67
U15B
4580M
R199
1M
C39
22P
R91
3K9
VR15
B50K MID (FREQ=100Hz-8K)
C75
33n C79
33n
C15
6.8n
C219
47u/25V
C215
47u/25V
RTN-CH7 RTN-CH7
5 67
U7B
4580M
3 21
U7A
4580M
R48
10K R47
10K
C35
22P
C63
1.5n
R119
5K1
R7
3K
VR7B
500KC
VR7A
500KC
R23
6K2
C11 6.8n
R19 6K2
R140
5K1
VR88
W50K
AUX-1
R288
47K
R260
4K7
C256
2.2u/50V R224
6K8
TR15
BR
TR16
BR
R324
1K5
+VCC
LD20
RED
R124
5K1
3 21
U16A
4580M
VR60A
10KD
PEAK
R308 68K
C144
22P
VR87
W50K
C224
47u/25V
R139
5K1
AUX-2
LEVEL
AUX-POST
R137
20K
R138
20K
LEFT-BUS
RIGHT-BUS
PAN
PGND
AUX-PRE
J8_1
POST (PRE)
21
3
SW42A
PS-42E85L
54
6
SW42B
PS-42E85L
87
9
SW42C
PS-42E85L
ALT-3 ALT-4
21
3
SW41A
PS-22E85L
54
6
SW41B
PS-22E85L
21
3
SW43A
PS-42E85L
54
6
SW43B
PS-42E85L
87
9
SW43C
PS-42E85L
11 10
12
SW43D
PS-42E85L
AFL-L AFL-R
R343
27K
R344
27K
AUX1 PRE/POST
SW42:MUTE/ALT3-4 SW43:SOLO,PFL
R56
10K
SOLO(PFL)
D8
BAS316
LOGIC
LD8
YEL
(SOLO)
R188
2K2
-VCC
(LOGIC=2.0V or 0.5V)
LOGIC
EQ HI (12K)
C24
6.8n VR24
B50K
R180 5K6
VR32
B50K
R176 5K6 LO (80Hz)
R52 10K
5 67
U16B
4580M
R200
1M
C40
22P
R92
3K9
VR16
B50K MID (FREQ=100Hz-8K)
C76
33n C80
33n
C16
6.8n
C220
47u/25V
C216
47u/25V
RTN-CH8 RTN-CH8
5 67
U8B
4580M
3 21
U8A
4580M
R50
10K R49
10K
C36
22P
C64
1.5n
R120
5K1
R8
3K
VR8B
500KC
VR8A
500KC
R24
6K2
C12 6.8n
R20 6K2
84
U15C
4580M
84
U16C
4580M
84
U13C
4580M
84
U14C
4580M
C105 100n
C108 100n
C106 100n
C109 100n
C107 100n
C110 100n
C111 100n
C112 100n
R249 2K2 R250 2K2
VR61 W50K
R251 2K2 R252 2K2
VR62 W50K
R253 2K2 R254 2K2
VR63 W50K
R255 2K2 R256 2K2
VR64 W50K
R261 2K2 R262 2K2
VR65 W50K
R263 2K2 R264 2K2
VR66 W50K
R265 2K2 R266 2K2
VR67 W50K
R267 2K2 R268 2K2
VR68 W50K
1 2 3 4 5 6 7 8 9 10 11 12
CN1
2.0-12P
RTN-CH1 RTN-CH2 RTN-CH3 RTN-CH4 RTN-CH5 RTN-CH6 RTN-CH7 RTN-CH8
(TO AMX-220FXPU2)
AUX-2 AUX-1
ALT-4 ALT-3
RIGHT-BUS
LEFT-BUS LEFT-BUS
RIGHT-BUS +VCC ALT-3 ALT-4 -VCC AUX-1 AUX-2
AFL-L
SOLO(PFL) SOLO(PFL)
AFL-R
AFL-R
AFL-L (TO AMX-220FXMN1)
AMX-220MKII/220FX MKII MN2
11 10
12
SW33D
PS-42E85L
LD12
RED
-VCC
(MUTE/ALT3-4)
CH5
11 10
12
SW36D
PS-42E85L
LD11
RED CH6
11 10
12
SW39D
PS-42E85L
LD10
RED CH7
11 10
12
SW42D
PS-42E85L
LD9
RED CH8
TR17
HR
R57
120R 1/4W
R58 510R
+VCC
CR-A
11 10
12
SW2D
PS-42E85L
LD24
RED
(MUTE/ALT3-4)
CH1
11 10
12
SW5D
PS-42E85L
LD23
RED CH2
11 10
12
SW8D
PS-42E85L
LD22
RED CH3
11 10
12
SW11D
PS-42E85L
LD21
RED CH4
CR-A
CR-A
CR-A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CN2
2.0-16P
LOGIC LOGIC
+VCC -VCC GND PGND
(TO AMX-220FXPU2)
+VCC -VCC GND PGND
PH PWR PH PWR
1 2 3 4 5 6 7 8
CN3
CN2.0-8P
R60 5K1
R59 5K6
R62 5K1
R61 5K6
R64 5K1
R63 5K6
R66 5K1
R65 5K6
R68 5K1
R67 5K6
R70 5K1
R69 5K6
R72 5K1
R71 5K6
R74 5K1
R73 5K6
AMX-220MKII/220FX MKIIMN2.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
26-Oct-2004 WEN XIANG
AMX-220MKII/220FX MKII SCHEMATIC DIAGRAM
11of
AMX-220MKII/220FX MKIIMN2VER040828
A3
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12345678910 11 12
A B C D
12
1110987654321
D
C B A
PRE-CH16 PRE-CH15 PRE-CH14 PRE-CH13
PRE-CH16 PRE-CH15
(TO AMX-220FXPU1)
1 2 3 4 5 6 7 8 9 10 11 12
CN1
2.0-12P
2TK-IN-R 2TK-IN-L CTRL-R-R CTRL-R-L AUX-SEND2 AUX-SEND1 AUX-RTN2-R AUX-RTN2-L AUX-RTN1-R AUX-RTN1-L (TO AMX-220FXPU1)
1 2 3 4 5 6 7 8 9 10 11 12
CN7
2.0-12P
PRE-CH14 PRE-CH13 PRE-CH12 PRE-CH11 PRE-CH10 PRE-CH9
CTRL-R-R CTRL-R-L
2TK-IN-R
2TK-IN-L
AUX-SEND2 AUX-SEND1
AUX-RTN2-L AUX-RTN2-R AUX-RTN1-R AUX-RTN1-L
PRE-CH12 PRE-CH11 PRE-CH10
PRE-CH9
1 2 3 4 5 6 7 8 9 10 11 12
CN5
2.0-12P
(TO AMX-220FXPU1)
LD16
GR LD18
GR LD20
GR LD22
GR LD24
GR LD26
GR LD28
GR LD30
GR
R320
120R 1/4W -VCC
LD17 GR LD19
GR LD21
GR LD23
GR LD25
GR LD27
GR LD29
GR LD31
GR
-VCC
LEFT METER
(-30) (-20) (-10) (-7) (-4) (-2) (0) (+2)
3 21
U17A
4580M
R318 36K
R325
0R0
R323
100K C101
47u/25V
PGND
LD33 GR LD35
GR LD14
YEL LD5
RED
LD32
GR LD34
GR LD13
YEL LD4
RED
TR9
HR
+VCC
TR10
HR
R317
120R 1/4W
R322 510R
R321
510R
R122
10K
PGND
5 67
U17B
4580M
R319 36K
R326
0R0
R324
100K C102
47u/25V
PGND
L-METER R-METER
84
U17C
4580M
C103
100n
C124
100n
R343
47R
R344
47R
C81
47u/25V
C82
47u/25V
+VCC
-VCC
PGND
LD6
RED
LD36
GR
R75
4K7
R342
2K
PGND PGND
PH PWR
(+4) (+7) (+10) (+18)
PWR ON
PHANTOM
+VCC
R329
10K
R328
10K
PGNDPGND
CR-A
C239
47P C240
47P
3 21
U15A
4580M
R141
20K
C13
22P C44
47u/25V
5 67
U15B
4580M
R53
18K
C14
22P
R11
5K1
VR64B 10KD
CTRL ROOM
LEFT
CTRL-R-L
TR11
J112
R25
5K1
SW4A
PS-22E85L
SW5A
PS-22E85L
SW6A
PS-22E85L
MAIN MIX
ALT-3
2TK
R139
20K
R147
20K
R140
20K
R178
10K
R176
120R
R170
100K
R281
47K
R156
12K
R174
100K
LOGIC
R171 100K
R313
15K
R110
10K
+VCC
3 21
U14A
4580M
R214 220K
R314
15K
+VCC
R111
10K
C238 100n
D1
BAS316
R23
5K1
LD11
YEL
LD2
RED
21
3
SW12A
PS-42E85L PFL
SOLO
D2
BAS316
11 10
12
SW12D
PS-42E85L
R24
5K1
R146
20K C230
2.2u/50V
SW-FET
SW-FET
PFL-IN-L
L-METER
TR14
J112
SW-FET
3 21
U16A
4580M
R151
20K
C25
22P C71
47u/25V
5 67
U16B
4580M
R57
18K
C26
22P
R27
5K1
VR64A 10KD
CTRL ROOM
RIGHT
CTRL-R-R
TR12 J112
R26
5K1
SW4B
PS-22E85L
SW5B
PS-22E85L
SW6B
PS-22E85L
MAIN MIX
ALT-4
2TK
R149
20K
R150
20K
R148
20K
R179
10K
R177
120R
R175
100K
R280
47K
R163
12K
R173
100K
SW-FET
PFL-IN-R
R-METER
TR13
J112
SW-FET
TR15
J112
R172 100K
CTRL ROOM SOURCE
CTRL-R-L CTRL-R-R
LOGIC
SW-FET
SW-FET SW-FET SW-FET SW-FET
PFL-IN-R PFL-IN-L
MAIN-L-2
MAIN-R-2
ALT3-L ALT4-R
2TK TO CR-R 2TK TO CR-L
ACTIVE
5 67
U1B
4580M
3 21
U1A
4580M
R3 8K2
C1
22P
LEFT-BUS
RIGHT-BUS
C3
22P
R2 8K2
C35
47u/25V
C34
47u/25V
3 21
U2A
4580M
3 21
U3A
4580M
R52
18K
C7
22P
R5
5K1
VR1A 10KD
MAIN MIX
1
2
3
GND
7GND
8
VR2A 10KD
R51
18K
C6
22P
R6
5K1
C41 47u/25V C42 47u/25V
R89 10K
R88 10K
MAIN MIX
LEFT
RIGHT
MAIN-L-2 MAIN-R-2
(BALANCED)
5 67
U2B
4580M
C95
22P
C99
47u/25V
R9 5K1
R90 10K
R7
5K1
MAIN OUT
LEFT
RIGHT
MAIN-L-3
5 67
U3B
4580M
C96
22P
C100
47u/25V
R10 5K1
R91 10K
R8
5K1
MAIN-R-3
MAIN-R-2 MAIN-R-3
MAIN-L-3 MAIN-L-2
3 21
U4A
4580M
3 21
U5A
4580M
R4 18K
C2
22P
ALT-3 ALT-4
C4
22P
R1 18K
C37
47u/25V
C36
47u/25V
ALT 3-4
(ALT-3)
C97
47u/25V
ALT 3/4 OUT
C98
47u/25V
3 21
U6A
4580M
3 21
U7A
4580M
R82
15K
C5
22P
AUX-1 AUX-2
C18
22P
R83
15K
C57
47u/25V
C56
47u/25V
5 67
U6B
4580M
5 67
U7B
4580M
R85 57K6
C10 22P
R65 22K
VR4
W50K
AUX1 SEND
VR5
W50K
R84
57K6
C23 22P
R70 22K
C63
47u/25V
C64
47u/25V
R109 10K
R108 10K
AUX2 SEND
R49 8K2
R50
8K2
TP11
TP12
AUX-SEND1 AUX-SEND2
5 67
U4B
4580M
5 67
U5B
4580M
R81
47K
C9 22P
4
5
6
VR3B W50K
1
2
3
GND
7
GND
8
VR3A W50K
R80 47K
C8 22P
R47
12K
R48
12K
TP9
TP10
SW1A
PS-22E85L
SW1B
PS-22E85L
LEFT-BUS
R136
10K RIGHT-BUS
R135
10K (ALT3/4 TO MIX)
ALT3-L ALT4-R
AUX-SEND1 AUX-SEND2
R107 10K
R105
10K VR6B
W50K
VR6A
W50K 3
21
U10A
4580M
5 67
U10B
4580M
R307
56K
C191 22P
C65
47u/25V
R19
22K
R309
56K
C192
22P
C67
47u/25V
R20
22K
R22
22K
R21
22K
AUX RETURN 1
R312
22K
R311
22K
EFX TO AUX1
AUX-1 AUX-1
LEFT-BUS
RIGHT-BUS
R104
10K
R106
10K
VR7B
W50K
VR7A
W50K
3 21
U11A
4580M
5 67
U11B
4580M
R308
56K
C194
22P
C66
47u/25V R142
20K
R310
56K
C193
22P
C68
47u/25V R143
20K
AUX RETURN 2
LEFT-BUS RIGHT-BUS
AUX-RTN1-L
AUX-RTN1-R
AUX-RTN2-R AUX-RTN2-L SW2A
PS-22E85L
SW2B
PS-22E85L
AUX-RTN1-L AUX-RTN1-R AUX-RTN2-R AUX-RTN2-L
C93
47u/25V
R154
20K
3 21
U12A
4580M
R155
22K
C33
22P
C94
47u/25V R134
10K
R45
18K
C91
47u/25V R152
20K
5 67
U12B
4580M
R153
22K
C32
22P
C92
47u/25V
R133
10K
R44
18K
LEFT-BUS RIGHT-BUS
2TK TO MIX
C241
100P C242
100P
2TK-IN-L 2TK-IN-R
SW3A
PS-22E85L SW3B
PS-22E85L
2TK-IN-L 2TK-IN-R
2TK TO CR-L 2TK TO CR-R
84
U5C
4580M
84
U4C
4580M
84
U7C
4580M
84
U10C
4580M
84
U11C
4580M
84
U3C
4580M
84
U6C
4580M
84
U12C
4580M
C108 100n
C109 100n
C110 100n
C111 100n
C112 100n
C113 100n
C114 100n
C115 100n
C116 100n
C117 100n
C122 100n
C123 100n
C125 100n
C126 100n
C127 100n
C128 100n
+VCC
-VCC
R87 10K R86 10K
84
U2C
4580M
84
U1C
4580M
C104 100n
C105 100n
C106 100n
C107 100n
84
U15C
4580M
84
U14C
4580M
84
U13C
4580M
84
U16C
4580M
C129 100n
C130 100n
C131 100n
C132 100n
C133 100n
C134 100n
C135 100n
C136 100n
AMX-220MKII/220FX MKII MN1
C342
4.7uF/25V
3
5
7
RL1B RY-5W-K
4
6
8
RL1C RY-5W-K
EFXRTN-L EFXRTN-R
EFXRTN-L EFXRTN-R
AUX-SEND2
12 34 56 78 910 1112 1314 1516
CN6
HEADER 8X2 1
2 3 4
COM
EN2
SDB161PVB15FS
1 2 3 4
COM
EN1
SDB161PVB15FS
1 2
3 4
5 6
7 8
AR1 680R*4
1 2
3 4
5 6
7 8
AR2 680R*4
C344
4.7uF/25V
DGND
DGND
+5V
+5V
R429
220R
R430
220R
DGND
(MUTE)
C343
4.7uF/25V
LD54 RED
(MUTE) (MUTE)
1 2 4 8
12
RL1A
RY-5W-K
1
+5V
2 4
C335
100N
8
D13
RLS4148
+VCC
PEAK(FLICKER) MUTE(GLOW)
PRESETVARIATION
AUX-SEND2
1 2 3
SW7A
PS-22E85L
10K CHANGE TO 3K3
NetU49_1
NetTR16_C
NetLD54_2
NetC342_1 NetC344_1 NetR400_2
NetR408_2 NetC332_2 NetCN6_16
DSP
JP1
PGND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CN2 Z-DSP
GND +VCC -VCC NetC342_1 NetC344_1 NetTR16_C +5V NetCN6_16 NetU49_1 NetC343_1 PGND DGND NetLD54_2 NetC332_2 NetR408_2 NetR400_2
1 2 3 4 5 6 7 8 9 10 11 12
CN3
2.0-12P
(TO AMX-220FXPU1)
ALT3-L ALT4-R MAIN-R-2 MAIN-R-3 MAIN-L-2 MAIN-L-3
EFXRTN-R EFXRTN-L EFXRTN-L
EFXRTN-R
D8 RLS4148
D5 RLS4148
D7 RLS4148
D6 RLS4148
D3
RLS4148 D4
RLS4148
AMX-220FXMN1-1 AMX-220FXMN1-1.SCH
VR97A W50K VR97B
W50K
C243 47u/25V C244 47u/25V
+VCC
-VCC
+5V
+VCC -VCC +5V
GND
DGND
PGND
PH PWR
GND DGND PGND
FOOTSWITCH-1a
ALT3-L ALT4-R
FOOTSWITCH-1a
-30DB-L -20DB-L -10DB-L -7DB-L -4DB-L -2DB-L 0DB-L +2DB-L +4DB-L +7DB-L +10DB-L +18DB-L +18DB-R +10DB-R +7DB-R +4DB-R +2DB-R 0DB-R -2DB-R -4DB-R -7DB-R -10DB-R -20DB-R -30DB-R
NetU15_9 NetU15_11
NetU15_11
+18DB-R +10DB-R +7DB-R +4DB-R +2DB-R 0DB-R -2DB-R -4DB-R -7DB-R -10DB-R -20DB-R -30DB-R +VCC PGND NetU15_9
+18DB-L +10DB-L +7DB-L +4DB-L +2DB-L 0DB-L -2DB-L -4DB-L -7DB-L -10DB-L -20DB-L -30DB-L +VCC PGND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
CN8 CON17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
CN9 CON17
NetC343_1
NetU17_8 NetU17_4
NetU17_8 NetU17_4 NetU17_8
NetU17_4
AUX-2 AUX-1
ALT-4 ALT-3
RIGHT-BUS
LEFT-BUS LEFT-BUS
RIGHT-BUS +VCC ALT-3 ALT-4 -VCC AUX-1 AUX-2
AFL-L
SOLO(PFL) SOLO(PFL)
AFL-R
AFL-R
AFL-L (TO AMX-220FXMN2)
CR-A CR-A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
CN4
2.0-16P
LOGIC LOGIC
(ALT-4)
R63 22K R64 22K R224 22K
DGND
R223 22K
R352 22K R351 22K
R353 5K1
R354 5K1
R356
5K1
R355 5K1
5 67
U13B
4580M
R316
22K
C12 22P
C69
47u/25V
AFL-L
R144
20K
5
4 6
SW12B
PS-42E85L
5 67
U14B
4580M
R315 22K
C24 22P
C70
47u/25V
AFL-R
R145
20K
8
7 9
SW12C
PS-42E85L
SOLO(PFL)
PFL-IN-L PFL-IN-R
3 21
U13A
4580M
R137
6K2
C11
22P
C43
47u/25V
PFL-IN-R PFL-IN-L
R138
20K
SOLO(PFL)
AFL-L AFL-R
**SW12:SOLO MODE
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
WEN XIANG
AMX-220MKII/220FX MKII SCHEMATIC DIAGRAM
AMX-220MKII/220FX MKIIMN1VER040828
AMX-220MKII/220FX MKIIMN1.Sch
26-Oct-2004 21of
5 67
U9B 4580M
3 21
U8A 4580M
5 67
U8B 4580M
84
U9C
4580M
84
U8C
4580M
R434 10K
R435 10K R436 10K
C248 100n C249 100n
C250 100n C251 100n
C245 22P C246 22P C247 22P
R431 10K
R432 10K R433 10K
--- 7 ---

12345678910 11 12
A B C D
12
1110987654321
D
C B A
AMX-220MKII/220FX MKII MN1-1
EQ HI (12KHz)
VR33A
B50K
R243 6K8
VR45A
B50K
R241 6K8
LO(80Hz)
R277 47K
C45
47u/25V 5
67
U24B 4580M
R263
1M
C188
22P
R92
10K
VR37A
B50K
R221 22K MID-LO(500Hz)
R180
1K8
C161
12n(M)
R182
1K8 C221
47n(M)
C205
3.3n(M)
C177
1n(M)
C169
12n(M)
C47
47u/25V
R279 47K
R66
4K7
C229
2.2u/50V R245
6K8
TR2
BR
TR1
BR
R295 1K5
+VCC
LD1 RED
R12
5K1
3 21
U32A
4580M
VR49B
10KD
PEAK
R55 43K
C15 22P
C50
47u/25V
LEVEL
PGND
R95
10K
R96
10K
R13
5K1
5 67
U32B
4580M
VR49A 10KD
R54
43K
C16
22P
C49
47u/25V
LEVEL
R99
10K
R98 10K
R14
20K
R16
20K
LEFT-BUS
RIGHT-BUS
21
3
SW13A
PS-42E85L
54
6
SW13B
PS-42E85L
ALT-3 ALT-4
21
3
SW14A
PS-42E85L
54
6
SW14B
PS-42E85L
AFL-L AFL-R
R299
27K
R300
27K
R18
5K1
VR90
W50K
AUX-1
VR89
W50K
R17
5K1
AUX-2
AUX-POST
AUX-PRE
1 2 3
J1
POST (PRE)
87
9
SW13C
PS-42E85L
21
3
SW8A
PS-22E85L
54
6
SW8B
PS-22E85L
87
9
SW14C
PS-42E85L
AUX1 PRE/POST
R97
10K
SOLO(PFL)
11 10
12
SW14D
PS-42E85L
D9
BAS316
LOGIC
LD9
YEL (SOLO)
R291
2K2
-VCC
(LOGIC=2.0V or 0.5V)
SW13:MUTE/ALT3-4 SW14:SOLO,PFL
PRE-CH9 PRE-CH9
LOGIC
3 21
U24A
4580M
R233
200K
C185
22P
R212
220K
R187
1K8
VR41A
B50K
R184 1K8
HI-MID(3KHz)
R157
12K
C213
3.3n(M)
R261 1M
EQ HI (12KHz)
VR33B
B50K
R244 6K8
VR45B
B50K
R242 6K8
LO(80Hz)
R278 47K
C46
47u/25V
5 67
U25B
4580M
R264
1M
C189
22P
R93
10K
VR37B
B50K
R222 22K MID-LO(500Hz)
R181
1K8
C162
12n(M)
R183
1K8 C222
47n(M)
C206
3.3n(M)
C178
1n(M)
C170
12n(M)
C48
47u/25V
PRE-CH10 PRE-CH10
3 21
U25A
4580M
R234
200K
C186
22P
R213
220K
R188
1K8
VR41B
B50K
R185 1K8
HI-MID(3KHz)
R158
12K
C214
3.3n(M)
R262 1M
R67 2K7
VR69 W50K
R69 2K7
EQ HI (12KHz)
VR34A
B50K
R249 6K8
VR46A
B50K
R246 6K8
LO(80Hz)
R282 47K
C72
47u/25V 5
67
U26B
4580M
R268
1M
C190
22P
R94
10K
VR38A
B50K
R227 22K MID-LO(500Hz)
R190
1K8
C163
12n(M)
R193
1K8 C223
47n(M)
C207
3.3n(M)
C179
1n(M)
C171
12n(M)
C75
47u/25V
PRE-CH11 PRE-CH11
3 21
U26A
4580M
R235
200K
C187
22P
R215
220K
R189
1K8
VR42A
B50K
R186 1K8
HI-MID(3KHz)
R164
12K
C215
3.3n(M)
R265 1M
EQ HI (12KHz)
VR34B
B50K
R250 6K8
VR46B
B50K
R247 6K8
LO(80Hz)
R283 47K
C73
47u/25V
5 67
U27B 4580M
R269
1M
C197
22P
R112
10K
VR38B
B50K
R228 22K MID-LO(500Hz)
R191
1K8
C164
12n(M)
R194
1K8 C224
47n(M)
C208
3.3n(M)
C180
1n(M)
C172
12n(M)
C76
47u/25V
PRE-CH12 PRE-CH12
3 21
U27A
4580M
R236
200K
C195
22P
R216
220K
R198
1K8
VR42B
B50K
R196 1K8
HI-MID(3KHz)
R165
12K
C216
3.3n(M)
R266 1M
R285 47K
R71
4K7
C231
2.2u/50V R252
6K8
TR4
BR
TR3
BR
R296 1K5
+VCC
LD3 RED
R28
5K1
3 21
U33A
4580M
VR50B
10KD
PEAK
R56 43K
C17
22P
C51
47u/25V
LEVEL
PGND
R114
10K
R115
10K
R29
5K1
5 67
U33B
4580M
VR50A 10KD
R58
43K
C27 22P
C78
47u/25V
LEVEL
R120
10K
R118 10K
R15
20K
R32
20K
LEFT-BUS
RIGHT-BUS
21
3
SW15A
PS-42E85L
54
6
SW15B
PS-42E85L
ALT-3 ALT-4
21
3
SW16A
PS-42E85L
54
6
SW16B
PS-42E85L
AFL-L AFL-R
R301
27K
R302
27K
R35
5K1
VR92
W50K
AUX-1
VR91
W50K
R34
5K1
AUX-2
AUX-POST
AUX-PRE
J2
POST (PRE)
87
9
SW15C
PS-42E85L
21
3
SW9A
PS-22E85L
54
6
SW9B
PS-22E85L
87
9
SW16C
PS-42E85L
AUX1 PRE/POST
R117
10K
SOLO(PFL)
SW15:MUTE/ALT3-4 SW16:SOLO,PFL
11 10
12
SW16D
PS-42E85L
D10
BAS316
LOGIC
LD10
YEL (SOLO)
R292
2K2
-VCC
(LOGIC=2.0V or 0.5V)
LOGIC
R68 2K7
VR70 W50K
R73 2K7
EQ HI (12KHz)
VR35A
B50K
R251 6K8
VR47A
B50K
R248 6K8
LO(80Hz)
R284 47K
C74
47u/25V 5
67
U28B
4580M
R270
1M
C198
22P
R113
10K
VR39A
B50K
R229 22K MID-LO(500Hz)
R192
1K8
C165
12n(M)
R195
1K8 C225
47n(M)
C209
3.3n(M)
C181
1n(M)
C173
12n(M)
C77
47u/25V
PRE-CH13 PRE-CH13
3 21
U28A
4580M
R237
200K
C196
22P
R217
220K
R199
1K8
VR43A
B50K
R197 1K8
HI-MID(3KHz)
R166
12K
C217
3.3n(M)
R267 1M
EQ HI (12KHz)
VR35B
B50K
R255 6K8
VR47B
B50K
R253 6K8
LO(80Hz)
R286 47K
C83
47u/25V
5 67
U29B
4580M
R274
1M
C202
22P
R123
10K
VR39B
B50K
R230 22K MID-LO(500Hz)
R200
1K8
C166
12n(M)
R202
1K8 C226
47n(M)
C210
3.3n(M)
C182
1n(M)
C174
12n(M)
C86
47u/25V
PRE-CH14 PRE-CH14
3 21
U29A
4580M
R239
200K
C199
22P
R218
220K
R207
1K8
VR43B
B50K
R204 1K8
HI-MID(3KHz)
R169
12K
C218
3.3n(M)
R271 1M
R289 47K
R77 4K7
C233
2.2u/50V
R258
6K8
TR7
BR
TR5
BR
R298 1K5
+VCC
LD8 RED
R30
5K1
3 21
U34A
4580M
VR51B
10KD
PEAK
R60 43K
C28
22P
C80
47u/25V
LEVEL
PGND
R116
10K
R127
10K
R36
5K1
5 67
U34B
4580M
VR51A 10KD
R59
43K
C29 22P
C79
47u/25V
LEVEL
R121
10K
R119 10K
R31
20K
R33
20K
LEFT-BUS
RIGHT-BUS
21
3
SW17A
PS-42E85L
54
6
SW17B
PS-42E85L
ALT-3 ALT-4
21
3
SW18A
PS-42E85L
54
6
SW18B
PS-42E85L
AFL-L AFL-R
R303
27K
R304
27K
R43
5K1
VR94
W50K
AUX-1
VR93
W50K
R42
5K1
AUX-2
AUX-POST
AUX-PRE
J3
POST (PRE)
87
9
SW17C
PS-42E85L
21
3
SW10A
PS-22E85L
54
6
SW10B
PS-22E85L
87
9
SW18C
PS-42E85L
AUX1 PRE/POST
R130
10K
SOLO(PFL)
SW17:MUTE/ALT3-4 SW18:SOLO,PFL
11 10
12
SW18D
PS-42E85L
D11
BAS316
LOGIC
LD12
YEL (SOLO)
R293
2K2
-VCC
(LOGIC=2.0V or 0.5V)
LOGIC
EQ HI (12KHz)
VR36A
B50K
R256 6K8
VR52A
B50K
R254 6K8
LO(80Hz)
R287 47K
C84
47u/25V 5
67
U30B
4580M
R275
1M
C203
22P
R124
10K
VR40A
B50K
R231 22K MID-LO(500Hz)
R201
1K8
C167
12n(M)
R203
1K8 C227
47n(M)
C211
3.3n(M)
C183
1n(M)
C175
12n(M)
C87
47u/25V
PRE-CH15 PRE-CH15
3 21
U30A
4580M
R240
200K
C200
22P
R219
220K
R208
1K8
VR48A
B50K
R205 1K8
HI-MID(3KHz)
R168
12K
C219
3.3n(M)
R272 1M
EQ HI (12KHz)
VR36B
B50K
R260 6K8
VR52B
B50K
R259 6K8
LO(80Hz)
R288 47K
C85
47u/25V
5 67
U31B
4580M
R276
1M
C204
22P
R125
10K
VR40B
B50K
R232 22K MID-LO(500Hz)
R210
1K8
C168
12n(M)
R211
1K8 C228
47n(M)
C212
3.3n(M)
C184
1n(M)
C176
12n(M)
C88
47u/25V
PRE-CH16 PRE-CH16
3 21
U31A
4580M
R238
200K
C201
22P
R220
220K
R209
1K8
VR48B
B50K
R206 1K8
HI-MID(3KHz)
R167
12K
C220
3.3n(M)
R273 1M
R290
47K
R76
4K7
C2322.2u/50V R257
6K8
TR6
BR
TR8
BR
R297 1K5
+VCC
LD7 RED
R37
5K1
3 21
U35A
4580M
VR56B
10KD
PEAK
R62 43K
C30 22P
C90
47u/25V
LEVEL
PGND
R126
10K
R128
10K
R38
5K1
5 67
U35B
4580M
VR56A 10KD
R61
43K
C31 22P
C89
47u/25V
LEVEL
R132
10K
R131 10K
R39
20K
R40
20K
LEFT-BUS
RIGHT-BUS
21
3
SW19A
PS-42E85L
54
6
SW19B
PS-42E85L
ALT-3 ALT-4
21
3
SW20A
PS-42E85L
54
6
SW20B
PS-42E85L
AFL-L AFL-R
R305
27K
R306
27K
R46
5K1
VR96
W50K
AUX-1
VR95
W50K
R41
5K1
AUX-2
AUX-POST
AUX-PRE
J4
POST (PRE)
87
9
SW19C
PS-42E85L
21
3
SW11A
PS-22E85L
54
6
SW11B
PS-22E85L
87
9
SW20C
PS-42E85L
AUX1 PRE/POST
R129
10K
SOLO(PFL)
SW19:MUTE/ALT3-4 SW20:SOLO,PFL
11 10
12
SW20D
PS-42E85L
D12
BAS316
LOGIC
LD15
YEL (SOLO)
R294
2K2
-VCC
(LOGIC=2.0V or 0.5V)
LOGIC
R72 2K7
VR71 W50K
R74 2K7
R78 2K7
VR72 W50K
R79 2K7
11 10
12
SW13D
PS-42E85L
LD40
RED CH9/10
11 10
12
SW15D
PS-42E85L
LD39
RED CH11/12
11 10
12
SW17D
PS-42E85L
LD38
RED CH13/14
11 10
12
SW19D
PS-42E85L
LD37
RED CH/15/16
TR16
HR
R346
120R 1/4W
R345 510R
+VCC
CR-A
-VCC
84
U26C
4580M
84
U29C
4580M
84
U25C
4580M
84
U28C
4580M
84
U31C
4580M
84
U34C
4580M
84
U35C
4580M
84
U32C
4580M
84
U24C
4580M
84
U27C
4580M
84
U30C
4580M
84
U33C
4580M
C137 100n
C138 100n
C139 100n
C140 100n
C141 100n
C142 100n
C143 100n
C144 100n
C145 100n
C146 100n
C147 100n
C148 100n
C149 100n
C150 100n
C151 100n
C152 100n
C153 100n
C154 100n
C155 100n
C156 100n
C157 100n
C158 100n
C159 100n
C160 100n
+VCC
-VCC
R331 5K1
R330 5K6
R333 5K1
R332 5K6
R335 5K1
R334 5K6
R337 5K1
R336 5K6
R339 5K1
R338 5K6
R341 5K1
R340 5K6
R348 5K1
R347 5K6
R350 5K1
R349 5K6
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
WEN XIANG
AMX-220MKII/220FX MKII SCHEMATIC DIAGRAM
AMX-220MKII/220FX MKIIMN1VER040828
AMX-220MKII/220FX MKIIMN1-1.Sch
26-Oct-2004 22of
--- 8 ---

1234
A B C D
4
321
D
C B A
5
42
U2A
LM339
10
11 13
U2D
LM339
10
11 13
U1D
LM339
5
42
U1A
LM339
10
11 13
U3D
LM339
5
42
U3A LM339
R2 120R R3
470R R6
330R
R4 330R R7
470R
R5 470R
R1
33R
PGND
+VCC
312
U3E
LM339
312
U2E
LM339
C1 100n
C2
100n
312
U1E
LM339
NetU21_8 NetU21_4
NetU15_11 -30DB-L
-10DB-L -4DB-L 0DB-L +4DB-L +10DB-L
NetU21_8 NetU21_4 +VCC +10DB-L +4DB-L 0DB-L -4DB-L -10DB-L -30DB-L NetU15_11 PGND
1
6
7
U2B LM339
8
914
U2C LM339
8
914
U1C LM339
1
6
7
U1B LM339
8
914
U3C LM339
1
6
7
U3B LM339
-20DB-L -7DB-L -2DB-L +2DB-L +7DB-L +18DB-L
+18DB-L +7DB-L +2DB-L -2DB-L -7DB-L -20DB-L
R8 510R R9
620R R10
1K3 R11
2K R12
10K R13
82K
12VMETER
12VMETER.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
1-Sep-2004
12VMETER
11of
12VMETER VER040611
A4
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17
CN6 Z-LED
--- 9 ---

For AMX-220FX MKII only
--- 10 ---

PCB : 313123/2 Top Overlay
5. PCB Layout
--- 11 ---

AMX-220MKII/220FX MKIIPU1 Top Overlay
AMX-220MKII/220FX MKII PU1 TopLayer
--- 12 ---

AMX-220MKII/220FX MKII PU1Bottom Overlay
AMX-220MKII/220FX MKII PU1 Bottom Layer
--- 13 ---

AMX-220MKII/220FX MKII PU2 Top Overlay
AMX-220MKII/220FX MKII PU2 TOPLayer
--- 14 ---

AMX-220MKII/220FX MKII PU2 Bottom overlay
AMX-220MKII/220FX MKII PU2 Bottom Layer
--- 15 ---

AMX-220MKII/220FX MKII MN1 Top overlay
AMX-220MKII/220FX MKII MN1 TOP Layer
--- 16 ---

AMX-220MKII/220FXMKII MN1 Bottom Overlay
AMX-220MKII/220FX MKII MN1 Bottom Layer
--- 17 ---

AMX-220MKII/220FX MKII MN2 Top overlay
AMX-220MKII/220FX MKII MN2TOPLayer
--- 18 ---