Alesis MultiMix 12 FireWire, Service Manual, Page: 7 / 51

8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
GAIN
CH FADER
PAN
1
2
3
1
2
3
AUX B LEVEL
AUX A LEVEL
MONO INPUT
(1-4)CHANNELS
STEREO INPUT
AUX B LEVEL
AUX A LEVEL
POST
PRE
PFL
POST
Channel 4
Channel 3
Channel 2
Channel 1
MIC3
MIC2
MIC1
R534 R546
C230
J12
VR3
R545
C3
R544
C238
R81 C56
C79
C237 R40
C257 R41
R83 C57
Q5
Q25
R80
C259
3
2
1
R554
R84
R555
C82
C80
Q26
Q6
R112
D26
R562 R563
D27
C81
R571
C109
IC12A
R570
C284
R163
C258 C243
R165
IC12B
C286
R56
SW3
R139
C120
C285
R79
C312
R198
R238
C328
VR15
C339
VR24
R240
R239
C311
R164
R197
R199
VR7
C340
C146
C353
IC20B
R274
C138
VR59
3
R476
R325
C137
C386
IC20A
R302
C166
R304
VR51
VR51
SW27
R454
LED24
R403
R404
R402
SW17
SW17
D15
R367
Q14
R368
Q15
C397
R370
VR33
VR42
R326
R303
LED32
R369
R455
R366
SW7
SW27
LINE 3
LINE 2
LINE 1
D7
D3
R533
R532
R543
R540
R542
R539
C229
C228
C236
C234 C2
C1
R541
R538
J11
J10
C254
C251
R39
R37
R38
R36
C235
C233
R78
R73
R76
R71
C54
C52
C55
C53
C75
C71
D2
D1
Q23
Q21
Q3
Q1
R75
R70
D24
D22 R560
R558
C77
C73
R561
R559
D25
D23
R111
R110
Q4
Q2
VR2
VR1
C256
C253
R552
R550
R79
R74
R553
R551
D6
D5
C78
C74
C76
C72
Q24
Q22
R569
R567
C108
C107
IC10A
IC11A
R568
R566
R160
R157
C281
C278
SW2
SW1
R55
R54
C242
C241
C255
C252
C282
C279
R162
R159
IC11B
IC10B
C119
C118 R138
R137
C283
C280
R74
R72
C310
C308
VR6
VR5
C309
C307
R195
R192 C326
C324 R161
R158
R194
R191
VR14
VR13
VR23
VR22
R235
R232
R196
R193
C338
C336
C325
C323
C337
C335
R237
R234
R236
R233
C352
C351
C145
C144
IC19B
IC18B
C136
C134
R273
R272
C376
R362
R356
R363
R358
Q12
Q10
VR58
VR57
C135
C133
IC19A
IC18A
C385
C384
R475
R474
R322
R319
R299
R296
R301
R298 C165
C164
LED23
LED22
C396
C395
R365
R360
VR50
VR49
R400
R397
R452
R450
SW26
SW25
VR50
VR49
SW15
SW16
R401
R398
R399
R396
SW16
SW15
D14
D13
R361
R357
R323
R320
R300
R297
SW5
SW6
LED31
LED30
R453
R451
R364
R359
SW26
SW25
VR32
VR31
VR41
VR40
Q13
Q11
AUX A RETURN
Y
(5-12)CHANNELS
J16
J15
J14
J21
J20
J22
C42
R99 R127
C99
IC8B C97
C271
R146
R128
C100
R98 C41
L/CH
R/CH
VR11
VR10
VR9
VR28
VR19
C300
C299
R175
C333
R216 R257
3 1
2
R283
R256
R217
C156
R282
C301
C367
R258 C368
C346
C179
C404
IC26B
C296
C292
C295
C291
R211
R170
C332
C331
R252
R207
R212
R206
R173
R171
R279
R277
C153
C150
IC25B
IC24B
C402
C400
C175
C171
R144
R142
R251
R246
VR27
VR26
VR18
VR17
R280
R247 C297
C293
C381
C358
R253
R248
C363
C344 C345
C343
C270
C268
1 3
2
C114
C112
IC7B
IC6B
R122
R117
R95
R92
C94
C89
C36
C34
C37
C35
R94
C93
C90
R123
R118
C66
R97
C95
IC8A C98
C272
R145
R126
C65
VR11
VR10
VR9
VR28
VR19
C298
C319
R174
C320
R215 R213
3 1
2
R254
R255
R214
C154
R344
C364
C382
R281 C366
C365
C155
IC26A
C294
C290
C317
C315
R210
R205
C318
C316
R208
R203
R209
R204
R172
R169
R309
R308
C151
C148
IC25A
IC24A
C152
C149
R143
R141
R250
R245
VR27
VR26
VR18
VR17
R249
R244 C360
C355
C359
C380
R278
R276
C362
C357 C361
C356
C269
C267
1 3
2
C113
C111
IC7A
IC6A
R120
R116
R93
R90
C91
C87
C62
C60
C63
C92
C88
R121
R115
R125
R124
C96
R119
R114
C390
C389
C388
1 3
VR63
R425 R345
R424
R483 R342
C178
R343
IC33A
C176
VR55
R430
CH FADER
C403
VR62
VR61
R337
R332 R479
C174
C170
R338
R333
C401
C399
R414
VR54
VR53
R335
R340
R417
R409
R408
R416
R339
R334
C173
C169
IC32A
IC31A
VR63
R482 R382
R383
IC33B
C177
VR55
CH FADER
C410
VR62
VR61
R379
R376 R478
C186
C185
R380
R377
C409
C408 VR54
VR53
C172
C168
IC32B
IC31B R431
R481
R422
R423
R415
R480
C187
SW31
R462 R427
R429
R428
SW21
LED28
R463
D19
LED36
R384
R341
VR46
VR37
2
2
SW11
SW31
SW21
R419
R411
SW30
SW29
R460
R458
R421
R413
R420
R412
SW20
SW19
LED27
LED26
R461
R459
SW20
SW19
R381
R378
VR45
VR44
VR35
VR36
R336
R331
LED35
LED34
SW30
SW29
D18
D17
SW10
SW9
POWER
R574
R575
R579
R581
R583
R578
R580
R582
C327
R310
R576
R587
R588
R589
C61
R91
C377
C378
AG
AG
GND
DGND
GND
LINE 5
LINE 7
LINE 9
LINE 11
LINE 6
LINE 8
LINE 10
LINE 12
9-40-0320
Coax SPDIF
MIC/LINE_IN_CH2
MIC/LINE_IN_CH3
MIC/LINE_IN_CH4
LINE_IN_CH_8
LINE_IN_CH_10
LINE_IN_CH_12
LINE_IN_CH_7
LINE_IN_CH_9
LINE_IN_CH_11
D31
D32
D33
D35
D36
D37
1
3
HI
MID
LOW
2
BAL
3
1
2
3
1
3
2
1
2
1
1
3
C
A
C
A
1
3
1
3
1
3
3
2
1
XF6/XF6IN1.SCH PP
XF6 INPUT1 CIRCUIT DIAGRAM
YH HORNG ELECTRONIC CO., LTD.
A2
1 3 Thursday, February 16, 2006
Title
Size Document Number Rev
Date: Sheet of
3
2
2
BAL
1
1
+48V
V-15V
B+
V+15
+15V
B-
V+15
V+15
V-15
V-15
V+15V
V-15
V+15
V+15
V-15
-15v
V-15
V-15
V-15
V+15
V-15
V-15
Q17
BC847C
C249
47/25V
R107
56K
VR30
503KG
R288
5K1
R109
56K
R291
5K1
C141
100n
Q16
BC847C
C142
100n
VR30
503KG
C374
47/25V
R287
5K1
C132 20P
R263 10K
C250
47/25V
C349
47/25V
R292
5K1
C143
20P
R268
10K
-
+
IC22A
NJM4558D
2
3
4
1
-
+
IC22B
NJM4558D
6
5
8
7
LED4
G
R407
27K
D16
1N4148
LED33
MUTE/ALT3/4
R457
47K
R374
47K
R436
27K
R465
2K7
LED29
RED
R405
27K
LED37
Y
R557
2K49I
R556
2K49I
C287
47/25V
R572
3K92I
R573
3K92I
D30
P6SMB11CAT3
D34
P6SMB11CAT3
C110
100n
R166
20K
C314
183J
R201
910%1
R241
6K8%1
C313
183J
VR16
50KB
R242
6K8%1
VR8
50KB
R200
910%1
R202
560
VR34
10KW
R306
4K7
VR25
50KB
R435
22K
C341
333J
R243
10K
R433
22K
C329
333J
R780
100
C56
220PF
C562
0.1UF
PTE7
CON2P20
2
1
R586
6K8
3
1
2
MIC4
C330
123J
C140
20P
R275
1M
C379
100/10V
R305 10K
C167
20P
R406 5K1
R456
5K1
C398
2.2/50V
C244
.22/50V
R168
1K3
C288
.22/50V
C261
.22/50V
C289
47/25V
R84
20K
R57
6K8
-
+
IC13B
NJM4580E
6
5
8
7
SW4
LPF
C121
100n
R167
2K2
R42
10K%1
Q7
BC847B
SW18
SOLO/PFL
SW18
SOLO/PFL
R372
10K
SW28
MUTE/ALT3/4
SW8
AUX A POST/PRE
D8
1N4148
D4
1N4148
Q8
BC847B
S
R
T
TS
RS
J13 LINE 4
SW28
MUTE/ALT3/4
VR38
10KW
VR47
10KW
R346
4K7
R387
4K7
R435
5K1
R437
27K
SW32
MUTE/ALT3/4
R350
1K5
R348
1K5
R464
5K1
SW32
MUTE/ALT3/4
SW22
SOLO/PFL
SW22
SOLO/PFL
SW12
AUX A POST/PRE
C139
100n
LED5
+48V
R328
3K9
R1
1K5
R2
1K5
LED1
LED
VR52
10KAC
R329
4K7
VR52
10KAC
VR43
10KW
VR60
10KD
C387
100/10V
LED25
RED
R375
6K8
R371
47K
R537
18KI
R536
18KI
R549
6K8I
R547
4.7I
R535
6K8I
R548
4.7I
C231
47/50V
R86
1K3%1
R88
1K3%1
C59
680P
C58
680P
C240
47/50V
C4
330P
R43
10K%1
C260
10/25V
C239
10/25V
Q27
2SA1316GR
C83
330p
R307
1K5
R373
4K7
R101
10K%1
R130
30K%1
C68
100P
R176
2K2
C322
123J
R260
6K8%1
C383
47/25V
C103
100n
-
+
IC27A
NJM4580M
2
3
4
1
C321
183J
R220
910%1
R219
560
R259
6K8%1
C369
123J
C371
333J
R284
10K
R311
1M
C157
20P
R218
910%1
VR20
50KB
VR12
50KB
VR29
50KB
C370
333J
C302
183J
-
+
IC9A
NJM4580M
2
3
4
1
C101
20P
R131
30K%1
C67
100P
R129
10K%1
C102
20P
C274
47/25V
R148
20K
C158
100n
C391
220/4V
R140
62K
C262
1000UF/6V
VR4
5KAC
R89
4.7
C86
100n
D29
BAV-21-TFK
Q28
2SA1316GR
R7
10K
C85
100n
R565
825I
C354
47/25V
S
R
T
TS
RS
J1
AUX_A_L/CH
-
+
IC1A
NJM4580M
2
3
4
1
R24 10K%1
C22 20P
C11
100P
R6
10K%1
C7
20P
R5
10K%1
R9
10K%1
-
+
IC1B
NJM4580M
6
5
8
7
C25
100n
S
R
T
TS
RS
J2
AUX_A_R/CH
C8
100P
R8
10K
C6
100P
C10
100P
C12
20P
R10
10K%1
C13 20P
R11 10K%1
C9
100n
C342
123J
C147
100n
R477
4K7
R485
4K7
R584
270K
R585
270K
R577
270K
-
+
IC13A
NJM4580M
2
3
4
1
-
+
IC21B
NJM4580M
6
5
8
7
-
+
IC21A
NJM4580M
2
3
4
1
C32
100P
C305
123J
R102
10K%1
VR56
10KAC
VR12
50KB
VR20
50KB
VR29
50KB
R85
510%1
R149
20K
C104
100n
C334
123J
C183
100n
R438
1.5K
VR56
10KAC
R439
1.5K
C45
100P
R103
10K%1
R132
30K%1
R261
6K8%1
R262
10K
C303
183J
C304
183J
R177
910%1
R222
910%1
R285
6K8%1
C273
47/25V
R133
30K%1
C69
20P
C105
20P
C347
333J
C372
47/25V
C373
333J
R286
1M
C159
20P
C406
220/4V
S
R
T
TS
RS
J23
ST_RCH
S
R
T
TS
RS
J17
ST_LCH
-
+
IC27B
NJM4580M
6
5
8
7
-
+
IC9B
NJM4580M
6
5
8
7
VR64
10KD
R347
4K7
C180
100n
-
+
IC34A
NJM4580M
2
3
4
1
C405
220/4V
C182
20P
R349
10K
R178
2K2
R221
560
VR64
10KD
-
+
IC34B
NJM4580M
6
5
8
7
R484
4K7
R385
4K7
C181
100n
C411
220/4V
C188
20P
R388
10K
D20 1N4148
R113
510%1
D28
BAV-21-TFK
C84
330p
R564
825I
TE2
CON16P20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TE6
CON16P20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TE1
CON8P20
1
2
3
4
5
6
7
8
BUS R
BUS L
BUS R
BUS L
AUX A
AUX B
ALT4 BUS
ALT3 BUS
SOLO L BUS
SOLO R BUS
PFL BUS
BUS R
BUS L
AUX A
AUX B
ALT4 BUS
ALT3 BUS
SOLO L BUS
SOLO R BUS
PFL BUS
E SW
I LIMITOR
LINE_IN_CH_5
LINE_IN_CH_6
MIC/LINE_IN_CH1
MIC/LINE_IN_CH2
MIC/LINE_IN_CH3
MIC/LINE_IN_CH4
LINE_IN_CH5
LINE_IN_CH6
LINE_IN_CH7
LINE_IN_CH8
LINE_IN_CH_9
LINE+IN_CH_10
LINE_IN_CH11
LINE_IN_CH_12
+48V
+15V
-15V
A+5V
D+5V
MIC/LINE_IN_CH_1