Akai Hexacomp C2M User manual

SERVICE MANUAL 1
C2M
SPECIFICATIONS
MULTI-BAND COMPRESSOR
MODEL HEXACOMP C2M
Functions: ......................... Effect On/Off
Connectors: ...................... INPUT (Input impedance: 300k ohms or more/Effect On, True Bypass/Effect Off)
OUTPUT (Output impedance: 1k ohms or less/Effect On,True Bypass/Effect Off)
DC IN (9 Volts)
Controls:............................ INPUT
OUTPUT
COMPRESSION x 6
MIX LEVEL x 6
Footswitch (Effect On/Off)
Indicators: ......................... LED x 7 (Effect ON, compression x 6)
Power requirements: ........ 9V DC/80mA 9V Alkaline battery, AC adaptor MP-9 (optional)
Dimensions: ...................... 134 (W) x 175 (D) x 77 (H) mm
Weight:............................... 1,350g
Accessories: ..................... Operator’s Manual, Battery (9V)
Options: ............................. AC adaptor MP-9
• Specifications are subject to change without notice.
OUTPUT INPUT
ON
OUTPUT
INPUT
COMPRESSION
MIX LEVEL
DC IN
DC 9V
LOW HIGH
LOW HIGH
10
9
8
7
6
5
4
3
2
1
0
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9

SERVICE MANUAL
2
##
##
#SAFETY INSTRUCTIONS ##
##
#INFORMATIONS
1. Parts identified by the }symbol are critical for safety.
Replace them only with the parts number specified.
2. In addition to safety, other parts and assemblies are
specified for conformance with such regulations as those
applying to spurious radiation.
These must also be replaced only with the specified
replacements.
Examples : Noise blocking capacitors, noise blocking filters,
etc.
3. Use specified internal wiring. Note especially :
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
4. Use specified insulating materials for hazardous live parts.
Note especially :
1) Insulation Tape
2) PVC tubing
3) Spacers (insulating barriers)
4) Insulation sheets for transistors
5) Plastic screws for fixing micro switches
5. When replacing AC primary side components (trans-
formers, power cords, noise blocking capacitors, etc.), wrap
the ends of the wires securely around the terminals before
soldering.
6. Make sure that wires do not contact heat producing parts
(heat sinks, oxide metal film resistors, fusible resistors,
etc.).
7. Check that replaced wires do not contact sharp edged or
pointed parts.
8. Also check areas surrounding repaired locations.
9. Make sure that foreign objects (screws, solder droplets,
etc.) do not remain inside the set.
SAFETY CHECK AFTER SERVICING
After servicing, make measurements of leakage-current or
resistance in order to determine that exposed parts are
acceptably insulated from the supply circuit.The leakage-
current measurement should be done between accessible
metal parts (such as chassis, ground terminal, microphone
jacks,signal input/output connectors,etc.) and the earthground
through a resistor of 1500 ohms paralleled with a 0.15 µF
capacitor, under the unit’s normal working conditions.
The leakage-current should be less than 0.5 mA rms AC.The
resistance measurement should be done between accessible
exposed metal parts and power cord plug prongs with the
power switch (if included) “ON”. The resistance should be
more than 2.2 M ohms.
SYMBOLS FOR PRIMARY DESTINATION
Unit destinations are indicated with letters as shown below.
Symbols Principal Destinations
A U.S.A
B England
E Europe
J Japan
VGermany
X1 Japan
X4 Universal Area

3
C2M BLOCK DIADRAM

REVISION
APPROVED CHECKED APPROVED DESIGNED
1st EDITION
A2File No.12345678
A
B
C
D
E
F
G
H
1234567891011
A
B
C
D
E
F
G
H
AKAI professional M. I. Corp.
C14
0.047
R42
1M
R210
4.7K
R211
47K
2
4
3
1
J1
HTJ-064-13H
2
4
3
1
J2
HTJ-064-13H 2
31
8 4
IC2A
NJM4558L
2
31
8 4
IC3A
NJM4558L
2
31
8 4
IC4A
NJM4558L
2
31
8 4
IC5A
NJM4558L
2
31
8 4
IC6A
NJM4558L
7
6
5IC6B
NJM4558L
7
6
5IC3B
NJM4558L
7
6
5IC4B
NJM4558L
7
6
5IC5B
NJM4558L
7
6
5
IC2B
NJM4558L
C26
0.047
C25
0.047
C24
0.047
C57
0.027
C53
1500p
C39
0.01
R67
18K
R72
1K
R57
2.7K
R12
10K
R11
10K
R10
10K
C27
0.047
C28
0.047
C29
0.047
C21
0.047
R70
7.5K
R69
1.1K
R74
430
C22
0.047
C23
0.047
C18
0.047
C19
0.047
C20
0.047
C15
0.01
C16
0.01
C17
0.01
C34
0.12
C32
0.022
R55
47K
R66
6.8K
R40
100K
R59
15K
R68
16K
R56
2.4K
R3
10K
R2
10K
R7
10K
R8
10K
R9
10K
R4
10K
R5
10K
R6
10K
R13
10K
R14
10K
R15
10K
C55
4700p C54
680p
C36
0.062 C38
0.01
C33
0.022 C52
3300p
R85
2.2K
R86
2.2K
R24
10K
R98
150K
R92
180
C208
10/16
1 3
2
VR50
100K(B)
1 3 5
2
VR58
50K(B)
1 3 5
2
VR59
50K(B)
1 3 5
2
VR60
50K(B)
1 3
2
VR51
100K(B)
13 5
2
VR52
50K(B)
13 5
2
VR53
50K(B)
13 5
2
VR54
50K(B)
1 3 5
2
VR61
50K(B)
13 5
2
VR55
50K(B)
1 3 5
2
VR62
50K(B)
13 5
2
VR56
50K(B)
1 3 5
2
VR63
50K(B)
13 5
2
VR57
50K(B)
TR14
2SC3330 TR23
2SC3330
TR22
2SC3330
TR24
2SC3330
R39
10K
R33
10K
R51
1M R52 1M
R65
30K R38
10K
C51
0.01
C48
0.01 D19
1SS133
D16
1SS133
C6
10/50
2
3
1
84
IC50A
NJM4558L
76
5
IC50B
NJM4558L
R41
1K
R208
47K
C200
1/50
R22
10K
R97
150K
R84
2.2K
R83
2.2K R91
180
R20210K
R20310K
R20410K
R20610K
R20510K
R201 10K
R200
20K
TR5
2SC3330 TR6
2SC3330
TR13
2SC3330
TR15
2SC3330
R32
10K
R23
10K R99 1M R100 1M
R62
30K R31
10K
C47
0.01
C42
0.01 D15
1SS133
D9 1SS133
C3
10/50
+9V
R81
2.2K R82
2.2K R21 10K
R96
150K
R90
180
R19
10K
R95
150K
R80
2.2K
R79
2.2K R89
180 +9V
R77
2.2K R78
2.2K R18 10K
R94
150K
R88
180
R16
10K
R93
150K
R76
2.2K
R75
2.2K R87
180 +9V
TR3
2SC3330 TR4
2SC3330
TR10
2SC3330
TR12
2SC3330
R29
10K
R20
10K R44 1M R46 1M
R61
30K R28
10K
C45
0.01
C41
0.01 D13
1SS133
D6
1SS133
C2
10/50
TR11
2SC3330 TR20
2SC3330
TR19
2SC3330
TR21
2SC3330
R37
10K
R30
10K R49 1M
R50
1M
R64
30K R36
10K
C50
0.01
C46
0.01 D18
1SS133
D14
1SS133
C5
10/50
TR1
2SC3330 TR2
2SC3330
TR7
2SC3330
TR9
2SC3330
R26
10K
R17
10K R43 1M R45 1M
R60
30K R25
10K
C43
0.01
C40
0.01 D11
1SS133
D3
1SS133
C1
10/50
TR8
2SC3330 TR17
2SC3330
TR16
2SC3330
TR18
2SC3330
R35
10K
R27
10K R47
1M
R48
1M
R63
30K R34
10K
C49
0.01
C44
0.01 D17
1SS133
D12
1SS133
C4
10/50
D52
L-934SRD-G(RED)
D53
L-934SRD-G(RED) D54
L-934SRD-G(RED)
D55
L-934SRD-G(RED) D56
L-934SRD-G(RED)
D51
L-934SRD-G(RED)
D50
L-934SRD-G(RED)
2 3
1
8 4
IC53A
NJM4558L
2 3
1
8 4
IC54A
NJM4558L
2 3
1
8 4
IC52A
NJM4558L
76
5
IC54B
NJM4558L
76
5
IC53B
NJM4558L
76
5
IC52B
NJM4558L
R213
2.7K R214 2.7K R215 2.7K R216 2.7K R217 2.7K R218 2.7K
2 31
8 4
IC58A
NJM4558L
2 31
8 4
IC59A
NJM4558L
2 31
8 4
IC60A
NJM4558L
7
6 5
IC58B
NJM4558L
7
6 5
IC59B
NJM4558L
7
6 5
IC60B
NJM4558L
D58
1SS133
+9V-B
2
31
8 4
IC1A
NJM2904L
2
3
1
J3
HTJ-020-05A R53
47K
R54
47K
C31
47/25
C30
100/25
R207
10K
D57
1SS133
R104
330
R58
2.7K
R73
5.6K
R71
910
C37
0.062
C58
0.012
R1
10K
+9V
C203
10/16 C204 10/16 C205 10/16 C206 10/16 C207 10/16
D20
1N4002
7
6
5
IC1B
NJM2904L
R212
2.7K
76
5
23
4
1 8
RL1
RY-9WK 1TR
SB-285 02-02N
D1
1SS133
+9V-B
+9V
+9V-B
C211
0.1
1
14
2
13
3
12
4
11
5
10
6
9
7 8
15 16
GNDVcc
IC7
NJM13700D
1
14
2
13
3
12
4
11
5
10
6
9
7 8
15 16
GNDVcc
IC8
NJM13700D
1
14
2
13
3
12
4
11
5
10
6
9
7 8
15 16
GNDVcc
IC9
NJM13700D
+
-
160Hz LP
5KHz HP
160-350Hz BP
350-900Hz BP
900-2.2KHz BP
2.2K-5KHz BP
R105
330
R106
330
R103
330
R102
330
R101
330
R209
100K
C201
10/16
D59
1SS133
1 2 3 4 5 6
P2
S6B-PH-K
1 2 3 4 5 6
P4
S6B-PH-K
1 2 3 4 5 6
W2
WIRE ASSY L8015(1)
1 2 3 4 5 6
W4
WIRE ASSY L8015(3)
+9V
+9V-B
Band-1 out Band-2 out Band-3 out Band-4 out Band-5 out Band-6 out
Band 1-out Band 2-out Band 3-out Band 4-out Band 5-out Band 6-out
Led 1 Led 2 Led 3 Led 4 Led 5 Led 6
Dc 1
Dc 2 Dc 3 Dc 4 Dc 5 Dc 6
Band-1 in Band-2 in Band-3 in Band-4 in Band-5 in Band-6 in
Band 1-in Band 2-in Band 3-in Band 4-in Band 5-in Band 6-in
Led 1 Led 2 Led 3 Led 4 Led 5 Led 6
Band 1-in
Band 2-in
Band 3-in
Band 4-in
Band 5-in
Band 6-in
Band-1 in Band-2 in Band-3 in Band-4 in Band-5 in Band-6 in
Band-1 out Band-2 out Band-3 out Band-4 out Band-5 out Band-6 out
Dc 2
Dc 3
Dc 4
Dc 5
Dc 1
Band 1-out
Band 6-out
Band 2-out
Band 3-out
Band 4-out
Band 5-out
Comp1
Comp2
Comp3
Comp4
Comp5
Comp6
Comp1 Comp2 Comp3 Comp4 Comp5 Comp6
C13
0.0022
C12
0.0022
C11
0.0022
C10
0.0022
C9
0.0022
C8
0.0022
1
2
P5
S2B-PH-K
+9V
+9V
+9V +9V
+9V
+9V
2
31
8 4
IC51A
NJM4558L
D60
HZS6A2
+9V-B
R107
1M
1 2 3 4 5 6
W3
WIRE ASSY L8015(1)
1 2 3 4 5 6
P3
S6B-PH-K
C202
0.01
C60
1/50
C210
10/16
C56
0.15/50
C35
0.33/50
C59
10/50
2000/12/8
I.SAKUMA
R108
1K
Dc 6
PC(#)C2M
SCHEMATIC DIAGRAM
No.L8015001
1
2
L8015A501B
L8015A501A
PC OPERATION
PC MAIN
W901
WIRE ASSY MS-2-120
-UL LEADWIRE
NOTE : UNLESS OTHERWISE SPECIFIED
ALL RESISTORS IN OHMS 1/6W
ALL CAPACITORS IN uF. P=pF
ALL ERECTROLYTIC CAPACITORS IN uF/WV
1 2 3 4 5 6 7 8
P1
S8B-PH-K
1 2 3 4 5 6 7 8
W1
WIRE ASSY L8015(2)
WIRE ASSY L8015(4)
2000/12/8
H.TSUZUKI
C2M
SCHEMATIC DIAGRAM
DC IN
INPUT
OUTPUT
OUTPUT
INPUT

5

6

SERVICE MANUAL 7
PARTS LIST
HOW TO USE THIS PARTS LIST
1. This Parts List lists those parts which are considered necessary for repairs.
2. Parts not shown in the Parts List will not in principle be supplied.
3. How to read the Parts List.
WARNING
}}
}}
}INDICATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY, REPLACE SAFETY CRITICAL
COMPONENTS ONLY WITH MANUFACTURER'S RECOMMENDED PARTS.
AVERTISSEMENT
}}
}}
}IL INDIQUE LES COMPOSANTS CRITIQUES DE SÉCURITÉ. POUR MAINTENIR LE DEGRÉ DE SÉCURITÉDE
L'APPAREIL, NE REMPLACER QUE DES PIÉCES RECOMMANDEES PAR LÉ FABRICANT.
ATTENTION
1. When placing an order for parts, be sure to list the Part No., Model No. and the description of each part.
Otherwise, the non-delivery of the part or the delivery of a wrong part may result.
2. Please make sure that Part No. is correct when ordering.
If not, a part different from the one you ordered may be delivered.
3. Since the parts shown in Parts List or Preliminary Service Manual may have been the subject of changes,
please use this Parts List for all future reference.
1. PC MAIN BOARD BLK
Ref. No. Part No. Description
D5 ED-431276C D SCHOT 1S30-J T05
D110 ED-431276C D SCHOT 1S30-J T05
:
:
IC5 EI-811073J ICTRC-6593
IC10 EI-811068J IC HD74HC157FP
Service parts classification
These reference symbols correspond with component
symbols in the Schematic Diagrams.
2. FINAL ASSEMBLY BLK
Ref. No. Part No. Description
1. SA-349332 FOOT
2. ZS-344754C ST PAN30x06STL CMT
:
:
44. SP-417333J COVER TOP
45. ZS-418385J BT BID30X06STL BNI EATRH LOCK
46-A }EW-380905J AC CORD 250S KP300 KS16A
H B J [J]
46-B }EW-368420J1 AC CORD 200SKP30KS B AC [A]
46-C }EW-410608J AC CORD 250 KP4819D KS31A B E
[E,V]
Symbols for primary destination
[A] U.S.A. [J] Japan
[B] England [V] Germany
[E] Europe [x1] Japan
[X4] Universal Area
Safety critical component
This number corresponds with the individual parts index number
in the figure.

SERVICE MANUAL
8
1. PC BOARD BLK
The PC Board Block may contain several PC Boards.They appear
under its block name without their individual part number.If one of
thePCBoardisrequired,youneedtoorderthewholePCBoardblock.
The individual PC Board is not available separately.
Ref. No Part No. Description
1 BA-L8015A020A PC(#) C2M BLK C2M
(#) PC MAIN BLK
(#) PC OPERATION BLK
2. PC MAIN BLK
Ref. No. Part No. Description
IC1 EI-428013J IC NJM2904L
IC2 EI-403306J IC NJM4558L
IC3 EI-403306J IC NJM4558L
IC4 EI-403306J IC NJM4558L
IC5 EI-403306J IC NJM4558L
IC6 EI-403306J IC NJM4558L
IC7 EI-812090J IC NJM13700D
IC8 EI-812090J IC NJM13700D
IC9 EI-812090J IC NJM13700D
J1 EJ-812069J PHONE J HTJ-064-13H 6.3
J2 EJ-812069J PHONE J HTJ-064-13H 6.3
J3 }EJ-812072J SOCKET DC HTJ-020-05A 1P
RL1 EQ-820421X RELAY SIG RY-9WK 1TR 9V
W901 EW-820443X WIRE ASSY MS-2-120-UL LEADWIRE
3. PC OPERATION BLK
Ref. No. Part No. Description
100 SE-820494X SPACER LED L=7.0
D50 ED-812087J D LED L-934SRD-G RED
D51 ED-812087J D LED L-934SRD-G RED
D52 ED-812087J D LED L-934SRD-G RED
D53 ED-812087J D LED L-934SRD-G RED
D54 ED-812087J D LED L-934SRD-G RED
D55 ED-812087J D LED L-934SRD-G RED
D56 ED-812087J D LED L-934SRD-G RED
IC50 EI-403306J IC NJM4558L
IC51 EI-403306J IC NJM4558L
IC52 EI-403306J IC NJM4558L
IC53 EI-403306J IC NJM4558L
IC54 EI-403306J IC NJM4558L
IC58 EI-403306J IC NJM4558L
IC59 EI-403306J IC NJM4558L
IC60 EI-403306J IC NJM4558L
VR50 EV-820415X VR ROTARY RK09L1141F20B15 B104
VR51 EV-820415X VR ROTARY RK09L1141F20B15 B104
VR52 EV-820416X VRSLIDE RS2511110615B54 B503S
VR53 EV-820416X VRSLIDE RS2511110615B54 B503S
VR54 EV-820416X VRSLIDE RS2511110615B54 B503S
VR55 EV-820416X VRSLIDE RS2511110615B54 B503S
VR56 EV-820416X VRSLIDE RS2511110615B54 B503S
VR57 EV-820416X VRSLIDE RS2511110615B54 B503S
VR58 EV-820416X VRSLIDE RS2511110615B54 B503S
VR59 EV-820416X VRSLIDE RS2511110615B54 B503S
VR60 EV-820416X VRSLIDE RS2511110615B54 B503S
VR61 EV-820416X VRSLIDE RS2511110615B54 B503S
VR62 EV-820416X VRSLIDE RS2511110615B54 B503S
VR63 EV-820416X VRSLIDE RS2511110615B54 B503S
4. FINAL ASSEMBLY BLK
Ref. No. Part No. Description
1 SP-820402X PANEL TOP C2M
2 ZW-384700J1 PROP 2 F.SCREW L=10
3 ZS-355511 BID30X06STL BNI
4 ZS-418385J BT BID30X06STL BNI EARTH LOCK
5 SM-820407X MASK SLIDE
6 SH-820406X HANDLE
7 ZS-379405 BID30X06STL CMT
8 ZW-820401X PROP 6 M.SCREW L=20
9 ES-812047J SW PUSH SB-285(METAL) 02-02N
10 ZW-812439J SW120STL CMT
11 ZW-812440J PW122X160X050STL NI3
12 SC-820409X HOLDER BATTERY
13 ZS-820455X BT CTS30X06STL BNI
14 SP-820404X COVER BOTTOM C2M
15 SA-820495X FOOT K13W
16 ZS-820564X ST PAN30X10 STL BZN C080
17 SC-820412X COVER BATTRY
18 SE-820411X CUSHION BATTERY
19 ZS-820413X SCREW COSMETIC
20 ZW-820480X SLIT W25X060X050PSL
21 SK-820458X CAP(BLACK) 2.8X10X1.5
22 SK-820408X KNOB VOLUME

SERVICE MANUAL 9
FINAL ASSEMBLY BLK C2M
6
21
22
4
1
11
10
9
12
13 8
4
18
17 19
4
14
15
16
4
20
7
3
2
7
5
7

SERVICE MANUAL
10
1-3, Hiranuma 1-Chome, Nishi-Ku, Yokohama, Japan
SERVICE SECT. PHONE : [phone] FAX : [phone]
Printed Date : Feb 15, 2001
Printed in Japan
ABBREVIATIONS FORTHE SERVICE MANUAL
ABBREVIATION EXPLANATION ABBREVIATION EXPLANATION
MINI MINImum
MIX MIXer
MOD MODulation / MODulator
M.WHEEL Modulation WHEEL
OSC OSCillator
PLD Programmable Logic Device
RAM Random Access Memory
RD ReaD
REG REGulator
RESO RESOnance
RL ReLay
ROM Read Only Memory
SCSI Small Computer System Interface
S/H Sample and Hold
SIMM Single Inline Memory Module
SMPTE Society of Motion Picture & Television
Engineers
SW SWitch
THRU THRoUgh
TRANS TRANSpose
U Upper
VA Voltage Analog
VCA Voltage Controlled Amplifier
VCF Voltage Controlled Filter
VR Variable Resistor
VREF REFerence Voltage
WR WRite
AMP (Amp) AMPlifier
BBD Backet Brigade Diode
BCD Binary Code Decimal
B.DOWN Brake DOWN
B.UP Back UP
CE Chip Enable
CH CHannel
COMP COMParator
CONT CONTrol
CV Control Voltage
D/A Digital to Analogue
DIR DIRectory
DMA Direct Memory Access
DSP Digital Signal Processor
EG Envelope Generator
EXT EXTernal
FREQ FREQuency
HPF High Pass Filter
INH INHibit
INT INTerrupt
INV INVerter
LLower
LAN Local Area Network
LFO Low Frequency Oscillator
MAX MAXimum
MEMO MEMOry
MIDI Musical Instrument Digital Interface