Alesis MultiMix 16 Firewire User manual

Confidential Alesis Service Manual 8-31-0170-A
ALESIS
MultiMix FireWire
16
(XF7)
Service Manual
P/N: 8-31-0170-A
The information in this document contains privileged and confidential information.
It is intended only for the use of those authorized by Alesis. If you are not the
authorized, intended recipient, you are hereby notified that any review,
dissemination, distribution or duplication of this document is strictly prohibited. If
you are not authorized, please contact Alesis and destroy all copies of this
document. You may contact Alesis at [email protected] or at
[email protected].
Copyright Alesis, LLC
ATTENTION!
THIS DOCUMENT CONTAINS SENSITIVE
PROPRIETARY INFORMATION.
ALL RECIPIENTS MUST HAVE A CURRENT
NON-DISCLOSURE AGREEMENT ON FILE
WITH ALESIS, LLC.
DO NOT MAKE ILLEGAL
COPIES OF THIS DOCUMENT

Confidential Alesis Service Manual 8-31-0170-A
Preface
This document is intended to assist the service technician in the operation,
maintenance and repair of the Alesis device. Together with the User Reference
Manual, this document provides a complete description of the functionality and
serviceability of the Device. Any comments or suggestions you may have
pertaining to the document are welcome and encouraged.
READ THIS!
In addition to any purchase price that Alesis may charge as consideration for Alesis selling or
otherwise transferring this service manual (“Manual”) to you, if you are not a service and repair
facility (“Service Center”) authorized by Alesis in writing to be an authorized Service Center,
Alesis sells or transfers the Manual to you on the following terms and conditions:
Only Service Centers authorized by Alesis in writing are authorized to perform service and repairs
covered by an Alesis warranty (if any), and transfer of the Manual to you does not authorize you
to be an authorized Service Center. Therefore, if you perform, or if the Manual is used to
perform, any service or repairs on any Alesis product or part thereof, any and all
warranties of Alesis as to that product and any service contract with Alesis for that
product shall be voided and shall no longer apply for such product, even if your services
or repairs were done in accordance with the Manual.
All service or repairs done by you or with reference to the Manual shall be solely your
responsibility, and Alesis shall have no liability for any such repairs or service work. All such
service or repairs are performed at the sole risk of the person performing the service or
repairs. You agree that all such work will be performed in a competent, professional and safe
manner at all times and to indemnify and fully hold Alesis and its successors and assigns
harmless in the event of any failure to so perform.
Your purchase of the Manual shall be for your own ultimate use and shall not be for purposes of
resale or other transfer.
As the owner of the copyright to the Manual, Alesis does not give you the right to copy the
Manual, and you agree not to copy the Manual without the written authorization of Alesis. Alesis
has no obligation to provide to you any correction of, or supplement to, the Manual, or any new or
superseding version thereof.
Alesis shall have the right to refuse to sell or otherwise transfer repair parts or materials to you in
its sole discretion. You shall not use, sell or otherwise transfer spare or replacement parts
supplied by Alesis to you (i) to repair or be used in products manufactured for or by third parties
or (ii) to any third parties for any purpose.
You shall not make any warranties or guarantees with respect to the products of Alesis or the use
thereof on behalf of Alesis or in your own name.
The foregoing describes the entire understanding related to sale or transfer of the Manual to you,
and no other terms shall apply unless in a writing signed by an authorized representative of
Alesis.
All Trademarks are property of their respective companies.

Confidential Alesis Service Manual 8-31-0170-A
Warnings
TO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE, DO NOT EXPOSE
THIS PRODUCT TO WATER OR MOISTURE.
The arrowhead symbol on a lightning flash inside a triangle is
intended to alert the user to the presence of un-insulated
"dangerous voltage" within the enclosed product which may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point inside a triangle is intended to alert the user
to the presence of important operating, maintenance and servicing
instructions in the literature which accompanies the product.
REPAIR BY ANY PERSON OR ENTITY OTHER THAN AN AUTHORIZED
ALESIS SERVICE CENTER WILL VOID THE ALESIS WARRANTY.
PROVISION OF THIS MANUAL DOES NOT AUTHORIZE THE RECIPIENT TO
COMPETE WITH ANY ALESIS DISTRIBUTOR OR AUTHORIZED REPAIR
SERVICE CENTER IN THE PROVISION OF REPAIR SERVICES OR TO BE
OR MAKE REPAIRS AS AN AUTHORIZED SERVICE CENTER.
ALL REPAIRS DONE BY ANY ENTITY OTHER THAN AN AUTHORIZED
ALESIS SERVICE CENTER SHALL BE SOLELY THE RESPONSIBILITY OF
THAT ENTITY, AND ALESIS SHALL HAVE NO LIABILITY TO THAT ENTITY
OR TO ANY OTHER PARTY FOR ANY REPAIRS BY THAT ENTITY.
Regarding the Power Supply Fuse
CAUTION: The product under service may employ the use of a
replaceable fuse. Danger of fire or electrocution if fuse is
incorrectly replaced. Replace with only the same type or
equivalent type recommended by the equipment manufacturer.
Regarding the Internal Battery
CAUTION: The product under service may employ the use of a
internal battery. Danger of explosion if battery is incorrectly
replaced. Replace only with the same or equivalent type
recommended by the manufacturer. Dispose of used batteries
according to the manufacturer's instruction.

Confidential Alesis Service Manual 8-31-0170-A
Safety Instructions
Carefully read the applicable items of the operating instructions and these safety
suggestions before using this product. Use extra care to follow the warnings
written on the product itself and in the operating instructions. Keep the operating
instructions and safety suggestions for reference in the future.
1. Power Source. The product should only be connected to a power supply which is described
either in the operating instructions or in markings on the product.
2. Power Cord Protection. AC power supply cords should be placed such that no one is likely to
step on the cords and such that nothing will be placed on or against them.
3. Periods of Non-use. If the product is not used for any significant period of time, the product's
AC power supply cord should be unplugged from the AC outlet.
4. Foreign Objects and Liquids. Take care not to allow liquids to spill or objects to fall into any
openings of the product.
5. Water or Moisture. The product should not be used near any water or in moisture.
6. Heat. Do not place the product near heat sources such as stoves, heat registers, radiators or
other heat producing equipment.
7. Ventilation. When installing the product, make sure that the product has adequate
ventilation. Improperly ventilating the product may cause overheating, which may damage the
product.
8. Mounting. The product should only be used with a rack which the manufacturer
recommends. The combination of the product and rack should be moved carefully. Quick
movements, excessive force or uneven surfaces may overturn the combination which may
damage the product and rack combination.
9. Cleaning. The product should only be cleaned as the manufacturer recommends.
10. Service. The user should only attempt the limited service or upkeep specifically described in
the operating instructions for the user. For any other service required, the product should be
taken to an authorized service center as described in the operating instructions.
11. Damage to the Product. Qualified service personnel should service the unit in certain
situations including without limitation when:
a. Liquid has spilled or objects have fallen into the product,
b. The product is exposed to water or excessive moisture,
c. The AC power supply plug or cord is damaged,
d. The product shows an inappropriate change in performance or does not operate
normally, or
e. The enclosure of the product has been damaged.

Confidential Alesis Service Manual 8-31-0170-A
ALESIS
MultiMix FireWire
16
(XF7)
SCHEMATIC
AND
PCB
FILES

8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
MAIN_FADER_R
MAIN_FADER_L
CH/L
CH/R
ALT3/4_FADER
L/CH
R/CH
SOLO
PFL
TO:MICON/DSP PCB
USB L
USB R
OUT L
OUT R
AG
1
3
3
1
R
ON
OFF
ON
1
1
2
3
3
2
2
3
2
3
AUX B
AUX B
1
3
3
1
2TK L-IN
XF7/XF7OUT1.SCH PP
XF7 OUTPUT CIRCUIT DIAGRAM
YH HORNG ELECTRONIC CO., LTD.
A2
2 3Thursday, February 16, 2006
Title
Size Document Number Rev
Date: Sheet of
L
1
1
2
2
OFF
2
2
V-15
V+15
V+15
V-15
V+15
+15V
V-15
V-15
V-15 V+15
+15V
V-15
V+15
-15V
V-15
V-15
V+15
V+15
V-15
V-15
V+15
V-15
V+15
V-15
V+15
V-15
V+15
V-15
V-15 V+15
V-15 V+15
V+5
V-15
V+15
V+15
V-15
V+15
-15V
V-15
V-15
V-15 V+15
V+5
V-15
V+15
C39
100n
C17 20P
R19 5K1
-
+
IC47A
NJM4580L
2
3
4
1
-
+
IC47B
NJM4580L
6
5
8
7
S
R
T
TS
RS
J25
CTRL_R_OUT
R108 120
C70
100n
-
+
IC5B
NJM4580E
6
5
8
7
C64
100n
C245
47/25V
R389
62K
C246
47/25V
C40 10P
R58 33K
R441
10K R23
10K
C19 20P
R20 5K1
R21
120
R46
5K1
R68
120
VR48
50KW
C277
10uF/25V
R136 10
TE3
HEADER_6P
1
3
4
5
6
2
R155
470
C117
100n
R156 470
C116
100n
C126
100n
C225 47P
C49
100n
R391
62K
-
+
IC5A
NJM4580E
2
3
4
1
R96 33K
C38 10P
R440
10K
R4
120
S
R
T
TS
RS
J5
PHONES_OUT
R69 120
R270
100
Q9
BC857B
C269
100n
VR48
50KW
S
R
T
TS
RS
J19
CTRL_L_OUT
R65
30K
C248
47/25v
R66
5K1
R67 15K
C33 20P
R530 7K5
C427
47/25V R527
5K1
C218 20P
R528 27K
C424
47/25V
C421
47/25V
R470
10K
C428
47/25V R523
5K1
C221 20P
R522 27K
C227 47P
R531 7K5
C50
100n
C220
100n
C213
100n
LED7
RED
LED6
Y
LED10
Y
LED11
G
-
+
IC4B
NJM4580E
6
5
8
7
S
R
T
TS
RS
J3
AUX_SEND_A
R51
20K
-
+
IC45A
NJM4580E
2
3
4
1
R471
10K
-
+
IC43A
NJM4580E
2
3
4
1
-
+
IC43B
NJM4580E
6
5
8
7
-
+
IC45B
NJM4580E
6
5
8
7
SW24
2TKtoC_ROOM
C18
100n
VR66
10KD
VR66
10KD
C219
100n
C226
100n
R17
2K2
R34
2K2
R15 120
S
R
T
TS
RS
J4
ALT3_OUT
S
R
T
TS
RS
J9
ALT4_OUT
R32 120
R16 120
R33 120
SW34
ALT to MIX
R472
12K
R473
12K
SW13
MIXtoC_ROOM
R449
22K R448
22K
SW23
SOLO MODE
SW14
ALTtoC_ROOM
R486
15K
R447
22K
R444
22K
C217 20P
R519 33K
C423
47/25V
C209 20P
R526 33K
C422
47/25V
R468
15K
-
+
IC41A
NJM4580E
2
3
4
1
-
+
IC41B
NJM4580E
6
5
8
7
R518
20K
R517
20K
C216
100n
C210
100n
C528 47P
-
+
IC40B
NJM4580E
6
5
8
7
C206 100n
-
+
IC40A
NJM4580E
2
3
4
1
R516 8K2
C418
47/25V
R502
20K
C207
100n
C199
100n
R512
10k
R513
220K
R515
15k
R514
10k
R499
15k
R524
100K
R493 12K
R491 12K
R494 51K
R409
51K
IC30 LM339DR
1 2 3 4 5 6 7 8
9 10 11 12 13 14
OUT1
OUT2
VCC 2IN- 2IN+ 1IN- 1IN+ 3IN-
3IN+
4IN-
4IN+
GND
OUT4
OUT3
R316 620%1 R354 470%1
R355 220%1
LED12
G
LED16
G
LED14
G
LED18
G
IC36 LM339DR
1 2 3 4 5 6 7 8
9 10 11 12 13 14
OUT1
OUT2
VCC 2IN- 2IN+ 1IN- 1IN+ 3IN-
3IN+
4IN-
4IN+
GND
OUT4
OUT3
R353 430%1
R352 470%1
LED17
G
LED20
G
LED19
G
LED21
G
-
+
IC35A
NJM4580E
2
3
4
1
C189
100n
-
+
IC35B
NJM4580E
6
5
8
7
D11
1N4148
R392
100K
R351
3K6
C184
100n
D10
1N4148 C393
47/25V
D9
1N4148
R390
3K6
C392
47/25V
D12
1N4148
R388
100K
Q19
BC857B
R294 8K2%1
R295 7K5%1R318 910%1 R317 1K3%1
LED9
RED
LED8
Y
LED15
Y
TE5
CON7P20
1
2
3
4
5
6
7
R27
120
R29
120
R488 100K
R489
47K
R497 47K
R495 100K
R498 22K
C196 20P
R496 22K
C415
47/25V
C416
47/25V
C205
100n
C197
100n
C417
2.2UF/50V
R501
20K
-
+
IC38A
NJM4580E
2
3
4
1
-
+
IC38B
NJM4580E
6
5
8
7
C198 20P
C146 20P
C148
100N
C147 20P
C150
100N
R305
10K
R330
10K
C18
100P
S
FET2
BF513
S
FET3
BF513
S
FET1
BF513
S
FET4
BF513
C307
47/25V
C310
47/25V
C13
100P
R432 10K
-
+
IC56A
NJM4558D
2
3
4
1
C564
100N
R418
1K8
R410
3K
C566 20P
-
+
IC56B
NJM4558D
6
5
8
7
C565
100N
R782 10K
R426
1K8
C5
0.01uF
R319 10K
-
+
IC29A
NJM4580E
2
3
4
1
R325 10K
-
+
IC29B
NJM4580E
6
5
8
7
RCA1
2TK R-IN
C563 20P
R781
3K
R590
1k
R591
1k
TE4
HEADER_6P
1
3
4
5
6
2
S
R
T
TS
RS
J8
AUX_SEND_B
R30
120
R31
120
C264
47/25V
C375
47/25V
R289
5K1
C162
100n
C263
47/25V
C394
47/25V
C161
100n
VR39
50KW
VR39
50KW
R147
56K
R290
5K1
C160 100P
R312 10K
-
+
IC28A
NJM4580E
2
3
4
1
R100
56K
R313
5K1 R314 10K
C163 100P
-
+
IC28B
NJM4580E
6
5
8
7R315
5K1
R271
820
Q20
BC857B
R395
100
R394
100
C191
100n
R293
820
R393
330K
Q18
BC857B
C190
100n
C276
22uF/16V
C124
330P
C123
330P
C275
22uF/16V
R152
6K04
R153
6K04
R186
1K%1
R185 14K7
C223
100n
C215
100n
R187
7K32
R188
7K32
R227
14K7
R184
1K%1
C129
330P
R264
1K
R266 3K9
R189
7K32
R190
7K32
R230
14K7
R231
1K%1
C130
330P
R228
1K%1
R229 14K7
R224
1K
R226
3K9
C125
1000P
C122 330P
C128
100n
C348
22uF/16V
R265
8K2
R267
120
C127
1000P
C131 330P
C350
22uF/16V
R225
8K2 R223
120
IC29 LM339DR
1 2 3 4 5 6 7 8
9 10 11 12 13 14
OUT1
OUT2
VCC 2IN- 2IN+ 1IN- 1IN+ 3IN-
3IN+
4IN-
4IN+
GND
OUT4
OUT3
IC23 LM339DR
1 2 3 4 5 6 7 8
9 10 11 12 13 14
OUT1
OUT2
VCC 2IN- 2IN+ 1IN- 1IN+ 3IN-
3IN+
4IN-
4IN+
GND
OUT4
OUT3
+
-
IC17B
TL084
6
5
11
7
+
-
IC17A
TL084
2
3
4
1
+
-
IC17D
TL084
13
12
14
+
-
IC17C
TL084
9
10
8
VR21
ENCODER/SW
1
2 3
4
5
IC14
AL1101
1
2
3
4
5
67
8
9
10
11 12 13
14
15
16
INL+
INL-
AG
REF+
REF-
VDDG
FRMT
WC
DOUT
DG AG VA
MID
INR-
INR+
C106
100n
R134
470
R154
470
C115
100n
IC15
AL1201
1
2
3
4
5
6
7
8
9
10
11 12 13
14
15
16
OUTL-
OUTL+
AG
REF+
REF-
VD
DIN
FRMT
WC
DEM
DG AG VA
MID
OUTR+
OUTR-
C265
22uF/16V
R135 47
+
-
IC16C
LM339
8
9
14
+
-
IC16A
LM339
6
7
3
1
+
-
IC16D
LM339
10
11
13
+
-
IC16B
LM339
4
5
12
2
C203 20P
R506 10K
C420
47/25V
-
+
IC39A
NJM4580E
2
3
4
1
C202 100n
R507
10K
R492
20K
R505
20K
R503
10K
C200 20P
R504 10K
-
+
IC39B
NJM4580E
6
5
8
7
C419
47/25V
C201 100n
R151
10K
R150 10K
C306
10uF/35V
R180
6K8
R183
680
R181
56
LED3
GRN
R179
2K7
R182
2K7
LED2
RED
VR65
10KD
LED13
G
-
+
IC44B
NJM4580E
6
5
8
7
-
+
IC44A
NJM4580E
2
3
4
1
C222 47P
R525 7K5
C425
47/25V
R467
5K1
C224 47P
C426
47/25V
VR65
10KD
R529 7K5
RCA1
2T_OUT
C413
47/25V
R443
10K
-
+
IC37A
NJM4580E
2
3
4
1
-
+
IC37B
NJM4580E
6
5
8
7
C194
100n
C192
100n
C195 20P
R466 27K
R445
5K1
C193 20P
R446 27K
C407
47/25V
S
R
T
TS
RS
J6
AUX_RETURN_B R26
10K%1
R25
10K%1
R47
10K%1 R59 10K%1
C30 20P
-
+
IC2A
NJM4580E
2
3
4
1
R48
10K%1
R442
10K
C23
20P
S
R
T
TS
RS
J7
AUX_RETURN_B
C21
100P
C43
100n
C24
100P
C29
100P
R49
10K%1
C27
20P
C28
100P
R28
10K%1 R60 10K%1
C31 20P
-
+
IC2B
NJM4580E
6
5
8
7
C44
100n
S
R
T
TS
RS
J24
MAIN_OUT_RCH
R105 120
R83 120
R84 120
R104 120
S
R
T
TS
RS
J18
MAIN_OUT_LCH R18
6K2
R35
6K2
SW33
2TK MIX
R469
8K2 R487
8K2
-
+
IC3A
NJM4580E
2
3
4
1
-
+
IC3B
NJM4580E
6
5
8
7
R50
30K
C47
100n
R62 8K2
C46 20P
R61 15K
R52
5K1
R12
120
R13
120
R500
5K1
D21
1N4148
-
+
IC4A
NJM4580E
2
3
4
1
C247
47/25V
C232
47/25V
R14
20K
R53 8K2
C51 20P
C48 20P
C266
47/25V
R45
10K
R44
5K1
C20
100n
R106
120
BUS R
BUS L
AUX A
AUX B
BUS R
BUS L
ALT 3
ALT 4
SOLO L BUS
SOLO R BUS
PFL BUS
I LIMITOR
E SW

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 8
Channel 7
Channel 6
Channel 5
MIC3
MIC2
MIC1
R534 R546
C230
J12
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
C258C243
R165
IC12B
C286
R56
SW3
R139
C120
C285
R79
R198
R238
VR15
C339
VR24
R240
R239
C311
R164
R197
R199
VR7
C340
C146
C353
IC20B
C378
R274
C138
VR59
3
R476
R325
C137
C386
IC20A
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 7
LINE 6
LINE 5
D7
D3
R533
R532
R543
R540
R542
R539
C229
C228
C236
C234C2
C1
R541
R538
J11
J10
C254
C251
R39
R37
R38
R36
C235
C233
R78
R73
R76
R71
C54
C52
C55
C53
C75
C71
D1
Q23
Q21
Q3
Q1
R75
R70
D24
D22 R560
R558
C77
C73
R561
R559
D25
D23
R111
R110
Q4
Q2VR2
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
R157C281
C278 SW2
SW1
R55
R54
C242
C241
C255
C252
C282
C279
R159
IC10B
C119
C118R138
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 C377
C376
R362
R356
R363
R358
Q12
Q10
VR58
VR57
C135
C133
IC19A
IC18A
C385
C384
R475
R322
R319
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
R98C41
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
R258C368
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
C344C345
C343
C270
C268
13
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
R281C366
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
C357C361
C356
C269
C267
13
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
13
VR63
R425 R345
R424
R483 R342
C178
R343
IC33A
C176
VR55
R430
CH FADER
C403
VR62
VR61
R337
R332R479
C174
C170
R338
R333
C401
C399
R414
VR54
VR53
R335
R340R417
R409
R408
R416
R339
R334
C173
C169
IC32A
IC31A
VR63
R482 R382
R383
IC33B
C177
VR55
CH FADER
C410
VR62
VR61
R379
R376R478
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
MIC5
MIC6
MIC7
MIC8
R754
R751
R748
R745
R743
R742
R741
R740
R755
R752
R749
R746
C484
C483
C482
C481
R621
R618
R616
R614
C439
C437
C435
C433
C444
C443
C442
C441
D2
D36
D34
D32
D30
R762
R760
R758
R756
C507
C505
C502
C499
R612 R763
R761
R759
R757
D37
D35
D33
D31 C452
C450
C448
C446
C451
C449
C447
C445
Q36
Q34
Q32
Q30
Q50
Q46
C460
C459
C458
C457
R779
R777
R775
R773
D48
D46
D44
D42
R770
R768
R766
R764
R771
R769
R767
R765
D49
D47
D45
D43
R627
R626
R624VR3
VR70
VR69
VR68
VR67
Q35
Q33
Q31R613
R623
R617
R620
R753
R750
R747
R744
R595
R594
R593
R592
C432
C431
C430
C429
C491
C489
C487
C485
R622
R619
R607
R615
R599
R598
R597
R596
C506
C503
C500
C487
J29
J28
J27
J26
C456
C455
C454
C453 R778
R776
R774
C518
C515
C512
C509
R638
R636
R634
R632
SW38
SW37
SW36
SW35
R603
R602
R600
R601
C496
C495
C494
C493
C508
C504
C501
C498
C516
C514
C510
R162
R639
R637
R635
R633
R631
R630
R629
R628
C520
IC11B
C464
C463
C462
C461
C519
C517
C513
C511
R611
R606
R604
C312
R662
R660
R658
R656
R654
R651
R648
R645
C328
C528
C526
C524
C522
VR74
VR73
VR72
VR71
C527
C525
C523
C521
R643
R642
R641
R653
R650
R647
R644
VR78
VR77
VR76
VR75
VR82
VR81
VR80
VR79
R655
R652
R649
R646
C544
C542
C540
C538
R640
R674
R673
R675
R672
C535
C533
C531
C529
C543
C541
C539
C537
R661
R659
R657
R667
R666
R665
R664
C548
C547
C546
C545
C476
C475
C473
C472
C552
C551
C550
C549
C471
C470
C474
C469
VR98
VR97
VR96
VR95
R739
R738
R737
R736
R474
R690
R688
R686
R684
C556
C555
C554
C553
IC55A
IC54A
IC53A
IC52A
C480
C479
C478
C477
R302
R299
R682
R680
R678
R676
R702
R699
R696
R693
R683
R681
R679
R677R707
R706
R705
R704
R703
R700
R697
R694
LED41
LED40
LED39
LED38
Q44
Q42
Q40
Q38
Q37
Q39
Q41
Q43
LED45
LED44
LED43
LED42
R715
R713
R711
R709
R735
R734
R733
R732
R722
R721
R718
R716
C468
C467
C466
C465
R731
R729
R726
R724
R730
R728
R727
R725
VR94
VR93
VR92
VR91
SW39
SW40
SW41
SW42
SW46
SW45
SW44
SW43
R708
R710
R712
R714
VR86
VR85
VR84
VR83
R701
R698
R693
R692 VR90
VR89
VR88
VR87
SW50
SW49
SW48
SW47
D39
D38
R723
R720
R719
R717
C560
C559
C558
C557
SW12
C486
C488
C490
C492
C434
C436
C438
C440
R610
R608
R605
Q52
IC48A
IC49A
IC50A
IC51A
Q29
Q51
Q49
Q47
Q45
R772 R671
R670
C536
C534
C532
C530
R669
R668
R663
D41
D40
R691
R689
R685
R687
Q48
R625
LINE 1
LINE 2
LINE 3
LINE 4
Channal 4
Channel 3
Channel 2
Channel 1
R608
SW47
SW48
SW49
SW50
SW43
SW44
SW45
SW46
R91
C61
R587
R588
R589
LINE 10
LINE 12
LINE 14
LINE 16
LINE 9
LINE 11
LINE 13
LINE 15
GND
GND
DG
9-40-0320
COAX SPDIF
LINE_IN_CH_11
LINE_IN_CH_13
LINE_IN_CH_15
LINE_IN_CH_12
LINE_IN_CH_14
LINE_IN_CH_16
MIC/LINE_IN_CH2
MIC/LINE_IN_CH3
MIC/LINE_IN_CH4
MIC/LINE_IN_CH5
MIC/LINE_IN_CH6
MIC/LINE_IN_CH7
MIC/LINE_IN_CH8
D60
D61
D62
D64
D65
D66
D51
D52
D53
D54
D55
D56
D57
D58
1
3
HI
MID
LOW
2
1
BAL
3
1
2
3
1
3
2
1
2
1
1
3
C
A
C
A
2
1
3
2
1
XF7/XF7IN1.SCH PP
XF7 INPUT1 CIRCUIT DIAGRAM
YH HORNG ELECTRONIC CO., LTD.
A2
1 3Thursday, February 16, 2006
Title
Size Document Number Rev
Date: Sheet of
3
2
3
BAL
1 3
3
1
1
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
+48
V-15
C249
47/25V
R107
56K
VR30
503KG
R288
5K1
R109
56K
R291
5K1
C141
100n
Q17
BC847C
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
7LED4
G
LED29
RED
R457
47K
R374
47K
R405
27K
D16
1N4148
R465
2K7
R407
27K
LED33
MUTE/ALT3/4
R436
27K
LED37
Y
R557
2K49I
R556
2K491
R573
3K92I
C287
47/25V
R572
3K92I
C110
100n
R166
20K R241
6K8%1
R200
910%1
R435
22K
C313
183J
VR8
50KB
C314
183J
VR16
50KB
R202
560
VR34
10KW
R306
4K7
R242
6K8%1
R201
910%1
VR25
50KB
R433
22K
C329
333J
C341
333J
R243
10K
R586
6K8
3
1
2
MIC4
C330
123J
R275
1M
C140
20P
C379
100/10V
C167
20P
R305
10K
R406
5K1 R456
5K1
TE1
CON8P20
1
2
3
4
5
6
7
8
C398
2.2/50V
C244
.22/50V
R168
1K3
C288
.22/50V
C261
.22/50V
SW4
LPF
C121
100n
C289
47/25V
-
+
IC13B
NJM4580E
6
5
8
7
R84
20K
R57
6K8
R42
10K%1
R167
2K2
SW28
MUTE/ALT3/4
SW18
SOLO/PFL
SW18
SOLO/PFL
R372
10K
D8
1N4148
D4
1N4148
Q8
BC847B
Q7
BC847B
SW28
MUTE/ALT3/4
SW8
AUX A POST/PRE
S
R
T
TS
RS
J13
LINE 8
VR38
10KW
R346
4K7
R437
27K
SW32
MUTE/ALT3/4
R435
5K1
R387
4K7
VR47
10KW
R350
1K5
R348
1K5
R464
5K1
SW12
AUX A POST/PRE
SW32
MUTE/ALT3/4
SW22
SOLO/PFL
SW22
SOLO/PFL
C139
100n
LED5
+48V
R328
3K9
R1
1K5
R2
1K5
LED1
LED
R780
100
C56
220PF
C562
0.1UF
PTE7
CON2P20
2
1
VR52
10KAC
VR43
10KW
C387
100/10V
VR52
10KAC
R329
4K7
VR60
10KD
R375
6K8
LED25
RED
R371
47K
R537
18KI
R536
18KI
R535
6K81
R549
6K81
R548
4.7I
R547
4.7I
C240
47/50V
C231
47/50V
C59
680P
R86
1K3%1
C4
330P
C58
680P
C239
10/25V
R88
1K3%1
C260
10/25V
R43
10K%1
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
C86
100n
D29
BAV-21-TFK
R7
10K
C85
100n
R89
4.7
R565
825I
C262
1000UF/6V
VR4
5KAC
Q28
2SA1316GR
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
C354
47/25V
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
C147
100n
C342
123J
TE2
CON16P20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
R485
4K7
R477
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
TE6
CON16P20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
R149
20K
R85 510%1
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
-
+
IC27B
NJM4580M
6
5
8
7
-
+
IC9B
NJM4580M
6
5
8
7
S
R
T
TS
RS
J17
ST_LCH
S
R
T
TS
RS
J23
ST_RCH
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
D59
P6SMB11CAT3
D63
P6SMB11CAT3
D28
BAV-21-TFK
R113
510%1
C84
330p
R564
825I
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_9
LINE_IN_CH_10
MIC/LINE_IN_CH1
MIC/LINE_IN_CH2
MIC/LINE_IN_CH3
MIC/LINE_IN_CH4
MIC/LONE_IN_CH5
MIC/LINE_IN_CH6
MIC/LINE_IN_CH7
MIC/LINE_IN_CH8
MIC/LINE_IN_CH1
LINE_IN_CH_9
LINE_IN_CH_10
LINE_IN_CH_11
LINE_IN_CH_12
LINE_IN_CH_13
LINE_IN_CH_14
LINE_IN_CH_15
LINE_IN_CH_16
+48V
+15V
-15V
A+5V
D+5V

8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
For Development ONLY
bcdef gp M_LED1123 a5
6
7 8
9
10 4
XA\XAXMICON PP
MICON_DSP for XA SERIES
A3
3 3Tuesday, September 16, 2003
Title
Size Document Number Rev
Date: Sheet of
M_C3
220uf/16V
M_R1547
M_IC1
87C52
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
40
41
42
43
44
17
28
39
37
36
35
34
33
32
31
30
18
19
20
21
22
23
24
25
26
27
29
38
P1.5
P1.6
P1.7
RST
P3.0/RXD
NC1
P3.1/TXD
P3.2
P3.3
P3.4
P3.5
WR
RD
XTAL2
XTAL1
VSS
P1.0
P1.1
P1.2
P1.3
P1.4
NC2
NC3
NC4
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
PSEN
ALE
EA
VCC
M_IC2
AL3201
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 DAC_OUT
INT/EXT
XTAL1
XTAL2
P0/DATA
P1/CLK
P2
P3
WORDCLK
BITCLK
SYSCLK
RESET
GND
3V_BYPASS
VCC
ADC_IN
M_TE1
CON6P
1
3
4
5
6
2
M_R15
100n
M_R5
100n
M_R14 47
M_R4 47
M_R2 470
M_R3 470
M_TE2
1
3
4
5
6
2
M_R1 100
M_C2
100n
M_R13220
M_R10 220
M_R12220
M_R9 220
M_R8 220
M_R7 220
M_M1
12MHz
M_TE3
CON6P
1
3
4
5
6
2
M_C1 100n
M_R6 220
M_R11 220
M_Q1
BC857B
M_Q2
BC857B
M_R16 100
M_R17 100

DG
GND
AG
AG
-15V
DG
+12V D+5V A+5V +15V
GND
DG
ON/OFFGND
+Vin
Feedback
Output
PIC4
ON/OFFGND
+Vin
Feedback
Output
PIC3
GND
LM7805_+5V
PIC5A
+3.3V +48V
PIC2
GND
LM7815_+15V
PIC1
DG