Text preview for : Yamaha-MG24_14FX mix.pdf part of Yamaha MG24-14FX, MG32-14FX mixer
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MG24/14FX
MG32/14FX
CIRCUIT BOARD LAYOUT
MG32/14FX
INJK (INJK1) INJK (INJK2) INJK (INJK3) MASJK
PS DSP DSP PS
MAS 2/4
MAS 3/4
MAS 4/4
IN (IN1) IN (IN2) IN (IN3) MAS MAS 1/4
MG24/14FX
INJK (INJK1) INJK (INJK2) MASJK
PS DSP DSP PS
MAS 2/4
MAS 3/4
MAS 4/4
IN (IN1) IN (IN2) MAS 1/4
17
MG24/14FX
MG32/14FX
WIRING
MG32/14FX CN107
INJK CN108 CN110
CN101 CN101
(INJK1)
CN105 CN105
CN102 CN102
1ch
~
8ch
IN (IN1)
CN103 CN103
CN104 CN104
CN109 CN111
CN106
CN107
INJK CN108 CN110
CN101 CN101
(INJK2)
CN105 CN105
CN102 CN102
9ch
IN (IN2)
~
16ch
CN103 CN103
CN104 CN104
CN109 CN111
CN106
CN107
INJK CN108 CN110
CN101 CN101
(INJK3)
CN105 CN105
CN102 CN102
17ch
IN (IN3)
~
24ch
CN103 CN103
CN104 CN104
CN109 CN111
CN106
CN903
MASJK CN301 CN302
CN904
CN905
25ch
~
32ch CN101 CN101
DSP
CN201 CN501 CN503
CN103 CN301 CN601 CN101
PS CN104 CN401 CN701
CN105
CN501 CN702 MAS 1/4
CN102
CN601 CN801
CN101 CN100
CN902
CN701 CN502
Transformer AC-SW
Transformer
CN908 CN901 CN907
CN906
MAS 2/4 MAS 3/4 MAS 4/4
18
MG24/14FX
MG32/14FX
MG24/14FX INJK
CN107
CN108 CN110
CN101 CN101
(INJK1)
CN105 CN105
CN102 CN102
1ch
~ IN (IN1)
8ch
CN103 CN103
CN104 CN104
CN109 CN111
CN106
CN107
INJK CN108 CN110
CN101 CN101
(INJK2)
CN105 CN105
CN102 CN102
9ch
IN (IN2)
~
16ch
CN103 CN103
CN104 CN104
CN109 CN111
CN106
CN903
MASJK CN301 CN302
CN904
CN905
CN101 CN101
DSP
CN201 CN501 CN503
17ch
~
CN103 CN301 CN601 CN101
24ch
PS CN104 CN401 CN701
CN105
CN501 CN702 MAS 1/4
CN102
CN601 CN801
CN101 CN100
CN902
CN701 CN502
Transformer AC-SW
Transformer
CN908 CN901 CN907
CN906
MAS 2/4 MAS 3/4 MAS 4/4
19
MG24/14FX
MG32/14FX
1. Overview 2-1. Assembly of AC-INLET & POWER-SW
4
2
7 260:WA609600 250: (WA60980)
6
280:VV314800 190:WA782600
5
3
230:VP184000
3 3
915:WB071100
270: (WA61030)
2-3. Solder and cover with heat-shrink-tube (five places)
2-2. Detail of lead-wire treatment
Cover firmly to a root.
one turn
two turn
15mm ± 2mm
15mm ± 2mm
(This picture is state of before soldering.)
2-4. Set PS-HOLDER 2-5. Set to Panel
210:WA677500
20
MG24/14FX
MG32/14FX
3-1. Connect wire of circuit-board MAS1000 and IN1000 4-1. Connect wire of circuit-board MASJK1000 and INJK1000
90, 150:WB349900 80, 140:WB349800
420, 600:WB349700
430, 610:WB349600
4-2. Bend(forming) cable.
MG32/14FX : 6 places, MG24/14FX : 4 places
CN301(MAS) CN109(IN), CN108(IN) - CN109(IN),
CN302(MAS) - CN111(IN), CN110(IN) - CN111(IN)
These four cables in left side. These four cables in right side.
1
1
5-1. Set CABLE-CLAMP (two places)
X = 55mm ± 5mm 6-1. Assembly of TRANS and SILICON-STEEL-BOX
Y = 65mm ± 5mm
Bundle secondary wire of trans
905:VV104600
Bundle Cable
·WA609600
·(WA69740) Y
X
900:WA786300
20mm ± 5mm
21
MG24/14FX
MG32/14FX
6-2. Bundle secondary wire of trans and wire WA69740:PH-SAN-2P 7-1. Assembly of circuit-board PS1000 and HEAT-SINK with silicon grease.
heat-sink
830: (WA67590)
30mm ± 5mm 910:WB327900
905:VV104600
silicon grease
DB200,IC300,IC400,IC500,TR400,
IC200,IC201,IC202,IC203
7-2. Connect wire WA609600:VH-4P#18 - CN100
wire (WA69740) :PH-SAN-2P - CN105
primary wire of trans - CN101
secondary wire of trans - CN102 7-3. Connect wire (WA60930):PH-SAN-11P - CN103
Bundle secondary wire of trans wire (WA60950):PH-SAN-6P - CN104
and wire WA69740:PA-SAN-2P
Twist two rotation and insert to connector.
7-4. Bundle by CABLE-CLAMP 7-5. Set up
22
MG24/14FX
MG32/14FX
MG24/14FX DISASSEMBLY PROCEDURE
1. Side Pad (Time required: About 1 minute each)
1-1 Remove the four (4) screws marked [980]. Then,
remove the side pad L and flat washer. (Photo.1)
1-2 Remove the four (4) screws marked [1000]. Then,
remove the side pad R and flat washer. (Photo.2)
[1000] [1000]
[980]
[980]: Bind Head Tapping Screw-B [1000]: Bind Head Tapping Screw-B
4.0X20 MFZN2BL (VS205900) 4.0X20 MFZN2BL (VS205900)
Photo.1 Photo.2
2. Bottom Cover
(Time required: About 4 minutes)
2-1 Remove the fourteen (15) screws marked [930] and
the fifteen (15) screws marked [940]. Then, remove
the bottom cover. (Photo.3)
· Bottom view
[930] [940] [930] [940]
[930]
[930]
[940]
[930]
[930]
[930]
[930]: Bind Head Tapping Screw-S 3.0X6 MFZN2BL (VS205900)
[940]: Bind Head Tapping Screw-B 4.0X12 MFZN2BL (VR138400)
Photo.3
23
MG24/14FX
MG32/14FX
3. Side Cover
(Time required: About 6 minutes each)
3-1 Remove the bottom cover. (See procedure 2.)
3-2 Side Cover L:
3-2-1 Remove the side pad L. (See procedure 1.)
3-2-2 Remove the five (5) hex socket set screws marked
[700] and the two (2) screws marked [710]. Then,
remove the side cover L. (Photo.4, 5)
3-3 Side Cover R:
3-3-1 Remove the side pad R. (See procedure 1.)
3-3-2 Remove the five (5) hex socket set screws marked
[730] and the two (2) screws marked [740]. Then,
remove the side cover R. (Photo.6, 7)
[700]
[710]
[700]
[700]: Hex. Socket Set Screw [710]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (V9842300) 3.0X6 MFZN2BL (EP630210)
Photo.4 Photo.5
[730]
[740]
[730]
[730]: Hex. Socket Set Screw [740]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (V9842300) 3.0X6 MFZN2BL (EP630210)
Photo.6 Photo.7
24
MG24/14FX
MG32/14FX
4. Supports
4-1 When you work on the back of the top cover, set the
supports to the right and left sides to prevent the
circuit boards from being distorted. (Photo.8)
Supports
Photo.8
5. PS Circuit Board
(Time required: About 6 minutes)
5-1 Remove the bottom cover. (See procedure 2.)
5-2 Set the supports. (See procedure 4.)
5-3 Remove the four (4) screws marked [865]. Remove
the PS circuit board and the heat sink. (Photo.9)
5-4 Remove the five (5) screws marked [840] and the
nine (9) screws marked [850]. Then, remove the PS
circuit board from the heat sink. (Photo.11)
6. Power Transformer
(Time required: About 6 minutes)
6-1 Remove the bottom cover. (See procedure 2.)
6-2 Set the supports. (See procedure 4.)
6-3 Remove the heat sink. (See procedure 5-3.)
6-4 Remove the four (4) screws marked [880]. Then,
remove the power transformer with the silicon steel
plate box, silicon steel ring, trans spacer. (Photo.9)
6-5 Remove the bolt marked [A] and nut marked [B].
Then, remove the power transformer. (Photo.9, 10)
25
MG24/14FX
MG32/14FX
[880] [865]
[B]
[A]
[880]
[865]: Bind Head Tapping Screw-B
Photo.10
3.0X8 MFZN2BL (EP600190)
[880]: Bind Head Tapping Screw-B
3.0X8 MFZN2BL (EP600190)
Photo.9
[850] PS
[840]
[840]
[850]
[840]: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
[850]: Bind Head Tapping Screw-B 3.0X12 MFZN2BL (VQ074600)
Photo.11
7. DSP Circuit Board
(Time required: About 7 minutes)
7-1 Remove the bottom cover. (See procedure 2.)
7-2 Set the supports. (See procedure 4.)
7-3 Remove the heat sink. (See procedure 5-3.)
7-4 Remove the three (3) screws marked [800]. Remove
the shield case. (Photo.12)
7-5 Remove the four (4) screws marked [780]. Then,
remove the DSP circuit board from the DSP shield
base. (Photo.13)
26
MG24/14FX
MG32/14FX
8. DSP Shield Base
(Time required: About 7 minutes)
8-1 Remove the bottom cover. (See procedure 2.)
8-2 Set the supports. (See procedure 4.)
8-3 Remove the heat sink. (See procedure 5-3.)
8-4 Remove the trans base. (See procedure 6.)
8-5 Remove the six (6) screws marked [760]. Then,
remove the DSP shield base. (Photo.14)
At the time of DSP shield base attachment,
please tighten the screw of [760] after putting
the pin of the DSP sheet CN101 into CN503 of
MAS 1/4 sheet. (Photo. 14, 27, 28)
[800] [780]
DSP
[800]: Bind Head Tapping Screw-S [780]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (EP630210) 3.0X6 MFZN2BL (EP630210)
Photo.12 Photo.13
[760]
[760]: Bind Head Tapping Screw-S
3.0X8 MFZN2BL (EP600530)
Photo.14
27
MG24/14FX
MG32/14FX
9. Push Switch and AC-IN Connector
(Time required: About 6 minutes)
9-1 Remove the bottom cover. (See procedure 2.)
9-2 Set the supports. (See procedure 4.)
9-3 Remove the heat sink. (See procedure 5-3.)
9-4 Remove the trans base. (See procedure 6.)
9-5 Remove the two (2) screws marked [200]. (Photo.15, 16)
9-6 Remove the power switch escutcheon by bending the
claw of the power switch escutcheon. (Photo.15, 16)
9-7 Remove the power switch knob. Remove the two
(2) screws marked [240]. Then, remove the push
switch from the PS holder. (Photo.17)
10. Push Switch and AC-IN Connector
(Time required: About 5 minutes)
10-1 Remove the bottom cover. (See procedure 2.)
10-2 Set the supports. (See procedure 4.)
10-3 Remove the two (2) screws marked [220] and a
screw marked [310]. Remove the AC-IN connector.
(Photo.15, 16)
[310]
[200]
[200]
[220]
[200]: Bind Head Tapping Screw-B
3.0X12 MFZN2BL (VQ074600)
[310]: Bind Head Screw A4.0X8 MFZN2BL (VP156800)
[220]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (EP630210) Photo.16
Photo.15
[240]
[240]: Bind Head Tapping Screw-S 3.0X6 MFZN2BL (EP630210)
Photo.17
28
MG24/14FX
MG32/14FX
MASJK INJK 2 INJK 1
Photo.18
11. INJK Circuit Boards 1 and 2
11-1 Remove the bottom cover. (See procedure 2.)
11-2 Set the supports. (See procedure 4.)
11-3 INJK Circuit Board 1:
(Time required: About9 minutes)
11-3-1 Remove the side pad L. (See procedure 1.)
11-3-2 Remove the sixteen (16) screws marked [100A] and
the sixteen (16) hexagonal nuts and flat washer
marked [A]. Then, remove the INJK circuit board 1.
(Photo.18, 19)
11-4 INJK Circuit Board 2:
(Time required: About 10 minutes)
11-4-1 Remove the heat sink. (See procedure 5-3.)
11-4-2 Remove the sixteen (16) screws marked [100B] and
the sixteen (16) hexagonal nuts and flat washer
marked [B]. Then, remove the INJK circuit board 2.
(Photo.18, 20)
[100A] [100A] [100A] [100A] [100B] [100B] [100B] [100B]
[100]: Bonding Tapping Screw-B [100]: Bonding Tapping Screw-B
3.0X8 MFZN2BL (VN413300) 3.0X8 MFZN2BL (VN413300)
Photo.19 Photo.20
29
MG24/14FX
MG32/14FX
12. MASJK Circuit Board
(Time required: About 11 minutes)
12-1 Remove the bottom cover. (See procedure 2.)
12-2 Set the supports. (See procedure 4.)
12-3 Remove the heat sink. (See procedure 5-3.)
12-4 Remove the trans base. (See procedure 6.)
12-5 Remove the DSP shield base. (See procedure 8.)
12-6 Remove the eight (8) screws marked [160] and the
thirty-three (33) hexagonal nuts and flat washer
marked [C]. Then, remove the MASJK circuit board.
(Photo.18, 21)
At the time of DSP shield base attachment,
please tighten the screw of [760] after putting
the pin of the DSP sheet CN101 into CN503 of
MAS 1/4 sheet. (Photo. 14, 27, 28)
[160] [160] [160]
[160]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
Photo.21
13. IN Circuit Boards 1 and 2
13-1 Remove the bottom cover. (See procedure 2.)
13-2 Set the supports. (See procedure 4.)
13-3 IN Circuit Board 1:
(Time required: About 9 minutes)
13-3-1 Remove the side pad L. (See procedure 1.)
13-3-2 Remove the eight (8) fader knobs 1. (Photo.22)
13-3-3 Remove the three (3) screws marked [590A].
(Photo.23)
13-3-4 Twist the eighteen (18) hooks of the IN circuit board
1 to become straight. Then, remove the IN circuit
board 1.(Photo.24)
30
MG24/14FX
MG32/14FX
13-4 IN Circuit Board 2:
(Time required: About 10 minutes)
13-4-1 Remove the eight (8) fader knobs 2. (Photo.22)
13-4-2 Remove the heat sink. (See procedure 5-3.)
13-4-3 Remove the DSP shield base. (See procedure 8.)
13-4-3 Remove the three (3) screws marked [590B].
(Photo.23)
13-4-4 Twist the eighteen (18) hooks of the IN circuit board
2 to become straight. Then, remove the IN circuit
board 2.(Photo.24)
The push ON buttons, sleeve ON buttons, push
PFL buttons, volume knobs, and push HPF
buttons on the IN circuit boards 1 and 2 are not
components of the circuit board. When you
replace the IN circuit board, you should remove
the push ON buttons, sleeve ON buttons, push
PFL buttons, volume knobs, and push HPF
buttons from the old IN circuit boards 1 and 2,
and install them in the new circuit board.
(Photo.25)
Photo.22
IN 2 IN 1 IN 2 IN 1
Hooks
Hooks
[590B] [590A] Photo.24
[590]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (EP630210)
Photo.23 31
MG24/14FX
MG32/14FX
Photo.25
14. MAS 1/4 to 4/4 Circuit Boards
(Time required: About 15 minutes)
14-1 Remove the bottom cover. (See procedure 1.)
14-2 Set the supports. (See procedure 4.)
14-3 Remove the heat sink. (See procedure 5-3.)
14-4 Remove the DSP shield base. (See procedure 8.)
14-5 MAS 2/4: (Time required: About 7 minutes)
14-5-1 Remove the two (2) screws marked [390A] from the
control panel surface. Then, remove the MAS 2/4
circuit board. (Photo.26, 29)
14-6 MAS 3/4: (Time required: About 7 minutes)
14-6-1 Remove the two (2) screws marked [390B] from the
control panel surface. Then, remove the MAS 3/4
circuit board. (Photo.26, 29)
14-7 MAS 4/4: (Time required: About 7 minutes)
14-7-1 Remove the hexagonal nut and flat washer [D] from
the control panel surface.Then, remove the MAS 4/4
circuit board. (Photo.26, 29, 30)
14-8 MAS 1/4: (Time required: About 12 minutes)
14-8-1 Remove the side pad R. (See procedure 1.)
14-8-2 Remove the twelve (12) fader knobs and the two (2)
select knobs from the control panel surface.
(Photo.26)
14-8-3 Remove the MAS 2/4 circuit board.
(See procedure 14-5.)
14-8-4 Remove the MAS 3/4 circuit board.
(See procedure 14-6.)
14-8-5 Remove the MAS 4/4 circuit board.
(See procedure 14-7.)
14-8-6 Remove the four (4) screws marked [380]. (Photo.29)
14-8-7 Twist the twenty-four (24) hooks of the MAS 1/4
circuit board to become straight. Then, remove the
MAS 1/4, 3/4, and 4/4 circuit boards. (Photo.29)
32
MG24/14FX
MG32/14FX
The meter reflector, push ON buttons, sleeve ON
buttons, push PFL buttons, holder circuit board,
volume knobs, push HPF buttons, push TAP
buttons, and meter cover, push spacer on the
MAS 1/4 circuit board are not components of
the circuit board. When you replace the MAS 1/
4 circuit board, you should remove the meter
reflector, push ON buttons, sleeve ON buttons,
push PFL buttons, holder circuit board, volume
knobs, push HPF buttons, push TAP buttons, and
meter cover, push spacer from the old MAS 1/4
circuit board, and install in the new circuit board.
(Photo.30)
At the time of DSP shield base attachment,
please tighten the screw of [760] after putting
the pin of the DSP sheet CN101 into CN503 of
MAS 1/4 sheet. (Photo. 14, 27, 28)
[390A]
[390B]
[390]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
Photo.26
MAS 1/4
Photo.27
Photo.28
33
MG24/14FX
MG32/14FX
MAS 1/4 MAS 4/4 MAS 3/4 MAS 2/4
[380]
Hooks x24
Photo.29
MAS 3/4
MAS 4/4
MAS 1/4
Photo.30
34
MG24/14FX
MG32/14FX
MG32/14FX DISASSEMBLY PROCEDURE
1. Side Pad (Time required: About 1 minute each)
1-1 Remove the four (4) screws marked [980]. Then,
remove the side pad L and flat washer. (Photo.1)
1-2 Remove the four (4) screws marked [1000]. Then,
remove the side pad R and flat washer. (Photo.2)
[1000] [1000]
[980]
[980]: Bind Head Tapping Screw-B [1000]: Bind Head Tapping Screw-B
4.0X20 MFZN2BL (VS205900) 4.0X20 MFZN2BL (VS205900)
Photo.1 Photo.2
2. Bottom Cover
(Time required: About 4 minutes)
2-1 Remove the sixteen (17) screws marked [930] and
the fifteen (15) screws marked [940]. Then, remove
the bottom cover. (Photo.3)
· Bottom view
[930] [940] [930] [940]
[930]
[930]
[940]
[930]
[930]
[930]
[930]: Bind Head Tapping Screw-S 3.0X6 MFZN2BL (VS205900)
[940]: Bind Head Tapping Screw-B 4.0X12 MFZN2BL (VR138400)
Photo.3
35
MG24/14FX
MG32/14FX
3. Side Cover
(Time required: About 6 minutes each)
3-1 Remove the bottom cover. (See procedure 2.)
3-2 Side Cover L:
3-2-1 Remove the side pad L. (See procedure 1.)
3-2-2 Remove the five (5) hex socket set screws marked
[700] and the two (2) screws marked [710]. Then,
remove the side cover L. (Photo.4, 5)
3-3 Side Cover R:
3-3-1 Remove the side pad R. (See procedure 1.)
3-3-2 Remove the five (5) hex socket set screws marked
[730] and the two (2) screws marked [740]. Then,
remove the side cover R. (Photo.6, 7)
[700] [710]
[700]
[700]: Hex. Socket Set Screw [710]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (V9842300) 3.0X6 MFZN2BL (EP630210)
Photo.4 Photo.5
[730] [740]
[730]
[730]: Hex. Socket Set Screw [740]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (V9842300) 3.0X6 MFZN2BL (EP630210)
Photo.6 Photo.7
36
MG24/14FX
MG32/14FX
4. Supports
4-1 When you work on the back of the top cover, set the
supports to the right and left sides to prevent the
circuit boards from being distorted. (Photo.8)
Supports
Photo.8
5. PS Circuit Board
(Time required: About 6 minutes)
5-1 Remove the bottom cover. (See procedure 2.)
5-2 Set the supports. (See procedure 4.)
5-3 Remove the four (4) screws marked [865]. Remove
the PS circuit board and the heat sink. (Photo.9)
5-4 Remove the five (5) screws marked [840] and the
nine (9) screws marked [850]. Then, remove the PS
circuit board from the heat sink. (Photo.11)
6. Power Transformer
(Time required: About 6 minutes)
6-1 Remove the bottom cover. (See procedure 2.)
6-2 Set the supports. (See procedure 4.)
6-3 Remove the heat sink. (See procedure 5-3.)
6-4 Remove the four (4) screws marked [880]. Then,
remove the power transformer with the silicon steel
plate box, silicon steel ring, trans spacer. (Photo.9)
6-5 Remove the bolt marked [A] and nut marked [B].
Then, remove the power transformer. (Photo.9, 10)
37
MG24/14FX
MG32/14FX
[880] [865]
[B]
[A]
[880]
[865]: Bind Head Tapping Screw-B
Photo.10
3.0X8 MFZN2BL (EP600190)
[880]: Bind Head Tapping Screw-B
3.0X8 MFZN2BL (EP600190)
Photo.9
[850] PS
[840]
[840]
[850]
[840]: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)
[850]: Bind Head Tapping Screw-B 3.0X12 MFZN2BL (VQ074600)
Photo.11
7. DSP Circuit Board
(Time required: About 7 minutes)
7-1 Remove the bottom cover. (See procedure 2.)
7-2 Set the supports. (See procedure 4.)
7-3 Remove the heat sink. (See procedure 5-3.)
7-4 Remove the three (3) screws marked [800]. Remove
the shield case. (Photo.12)
7-5 Remove the four (4) screws marked [780]. Then,
remove the DSP circuit board from the DSP shield
base. (Photo.13)
38
MG24/14FX
MG32/14FX
8. DSP Shield Base
(Time required: About 7 minutes)
8-1 Remove the bottom cover. (See procedure 2.)
8-2 Set the supports. (See procedure 4.)
8-3 Remove the heat sink. (See procedure 5-3.)
8-4 Remove the trans base. (See procedure 6.)
8-5 Remove the six (6) screws marked [760]. Then,
remove the DSP shield base. (Photo.14)
At the time of DSP shield base attachment,
please tighten the screw of [760] after putting
the pin of the DSP sheet CN101 into CN503 of
MAS 1/4 sheet. (Photo. 14, 28, 39)
[800] [780]
DSP
[800]: Bind Head Tapping Screw-S [780]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (EP630210) 3.0X6 MFZN2BL (EP630210)
Photo.12 Photo.13
[760]
[760]: Bind Head Tapping Screw-S
3.0X8 MFZN2BL (EP600530)
Photo.14
39
MG24/14FX
MG32/14FX
9. Push Switch and AC-IN Connector
(Time required: About 6 minutes)
9-1 Remove the bottom cover. (See procedure 2.)
9-2 Set the supports. (See procedure 4.)
9-3 Remove the heat sink. (See procedure 5-3.)
9-4 Remove the trans base. (See procedure 6.)
9-5 Remove the two (2) screws marked [200]. (Photo.15, 16)
9-6 Remove the power switch escutcheon by bending the
claw of the power switch escutcheon. (Photo.15, 16)
9-7 Remove the power switch knob. Remove the two
(2) screws marked [240]. Then, remove the push
switch from the PS holder. (Photo.17)
10. Push Switch and AC-IN Connector
(Time required: About 5 minutes)
10-1 Remove the bottom cover. (See procedure 2.)
10-2 Set the supports. (See procedure 4.)
10-3 Remove the two (2) screws marked [220] a screw
marked [310]. Remove the AC-IN connector.
(Photo.15, 16)
[310]
[200]
[200]
[220]
[200]: Bind Head Tapping Screw-B
3.0X12 MFZN2BL (VQ074600)
[310]: Bind Head Screw A4.0X8 MFZN2BL (VP156800)
[220]: Bind Head Tapping Screw-S
3.0X6 MFZN2BL (EP630210) Photo.16
Photo.15
[240]
[240]: Bind Head Tapping Screw-S 3.0X6 MFZN2BL (EP630210)
Photo.17
40
MG24/14FX
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MASJK INJK 3 INJK 2 INJK 1
Photo.18
11. INJK Circuit Boards 1, 2 and 3
11-1 Remove the bottom cover. (See procedure 2.)
11-2 Set the supports. (See procedure 4.)
11-3 INJK Circuit Board 1:
(Time required: About9 minutes)
11-3-1 Remove the side pad L. (See procedure 1.)
11-3-2 Remove the sixteen (16) screws marked [100A] and
the sixteen (16) hexagonal nuts and flat washer
marked [A]. Then, remove the INJK circuit board 1.
(Photo.18, 19)
11-4 INJK Circuit Board 2:
(Time required: About 9 minutes)
11-4-1 Remove the heat sink. (See procedure 5-3.)
11-4-2 Remove the sixteen (16) screws marked [100B] and
the sixteen (16) hexagonal nuts and flat washer
marked [B]. Then, remove the INJK circuit board 2.
(Photo.18, 20)
11-5 INJK Circuit Board 2:
(Time required: About 10 minutes)
11-5-1 Remove the heat sink. (See procedure 5-3.)
11-5-2 Remove the sixteen (16) screws marked [100C] and
the sixteen (16) hexagonal nuts and flat washer
marked [C]. Then, remove the INJK circuit board 3.
(Photo.18, 21)
[100A] [100A] [100A] [100A] [100B] [100B] [100B] [100B]
[100]: Bonding Tapping Screw-B [100]: Bonding Tapping Screw-B
3.0X8 MFZN2BL (VN413300) 3.0X8 MFZN2BL (VN413300)
Photo.19 Photo.20
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[100C] [100C] [100C] [100C]
[100]: Bonding Tapping Screw-B
3.0X8 MFZN2BL (VN413300)
Photo.21
12. MASJK Circuit Board
(Time required: About 11 minutes)
12-1 Remove the bottom cover. (See procedure 2.)
12-2 Set the supports. (See procedure 4.)
12-3 Remove the heat sink. (See procedure 5-3.)
12-4 Remove the trans base. (See procedure 6.)
12-5 Remove the DSP shield base. (See procedure 8.)
12-6 Remove the eight (8) screws marked [160] and the
thirty-three (33) hexagonal nuts and flat washer
marked [D]. Then, remove the MASJK circuit board.
(Photo.18, 22)
At the time of DSP shield base attachment,
please tighten the screw of [760] after putting
the pin of the DSP sheet CN101 into CN503 of
MAS 1/4 sheet. (Photo. 14, 28, 39)
[160] [160] [160]
[160]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
Photo.22
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13. IN Circuit Boards 1, 2 and 3
13-1 Remove the bottom cover. (See procedure 2.)
13-2 Set the supports. (See procedure 4.)
13-3 IN Circuit Board 1:
(Time required: About 9 minutes)
13-3-1 Remove the side pad L. (See procedure 1.)
13-3-2 Remove the eight (8) fader knobs 1. (Photo.23)
13-3-3 Remove the three (3) screws marked [590A].
(Photo.24)
13-3-4 Twist the eighteen (18) hooks of the IN circuit board
1 to become straight. Then, remove the IN circuit
board 1.(Photo.25)
13-4 IN Circuit Board 2:
(Time required: About 9 minutes)
13-4-1 Remove the eight (8) fader knobs 2. (Photo.23)
13-4-2 Remove the three (3) screws marked [590B].
(Photo.24)
13-4-3 Twist the eighteen (18) hooks of the IN circuit board
2 to become straight. Then, remove the IN circuit
board 2.(Photo.25)
13-5 IN Circuit Board 3:
(Time required: About 10 minutes)
13-5-1 Remove the eight (8) fader knobs 3. (Photo.23)
13-5-2 Remove the heat sink. (See procedure 5-3.)
13-5-3 Remove the DSP shield base. (See procedure 8.)
13-5-4 Remove the three (3) screws marked [590C].
(Photo.24)
13-5-5 Twist the eighteen (18) hooks of the IN circuit board
2 to become straight. Then, remove the IN circuit
board 2.(Photo.25)
The push ON buttons, sleeve ON buttons, push
PFL buttons, volume knobs, and push HPF
buttons on the IN circuit boards 1, 2 and 3 are
not components of the circuit board. When you
replace the IN circuit board, you should remove
the push ON buttons, sleeve ON buttons, push
PFL buttons, volume knobs, and push HPF
buttons from the old IN circuit boards 1, 2 and 3,
and install them in the new circuit board.
(Photo.26)
Photo.23
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Hooks
IN 3 IN 2 IN 1 IN 3 IN 2
Hooks
IN 1
Hooks
[590C] [590B] [590A]
[590]: Bind Head Tapping Screw-S Photo.25
3.0X6 MFZN2BL (EP630210)
Photo.24
Photo.26
14. MAS 1/4 to 4/4 Circuit Boards
(Time required: About 15 minutes)
14-1 Remove the bottom cover. (See procedure 1.)
14-2 Set the supports. (See procedure 4.)
14-3 Remove the heat sink. (See procedure 5-3.)
14-4 Remove the DSP shield base. (See procedure 8.)
14-5 MAS 2/4: (Time required: About 7 minutes)
14-5-1 Remove the two (2) screws marked [390A] from the
control panel surface. Then, remove the MAS 2/4
circuit board. (Photo.27, 30)
14-6 MAS 3/4: (Time required: About 7 minutes)
14-6-1 Remove the two (2) screws marked [390B] from the
control panel surface. Then, remove the MAS 3/4
circuit board. (Photo.27, 30)
14-7 MAS 4/4: (Time required: About 7 minutes)
14-7-1 Remove the hexagonal nut and flat washer [E] from
the control panel surface.Then, remove the MAS 4/4
circuit board. (Photo.27, 30, 31)
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14-8 MAS 1/4: (Time required: About 12 minutes)
14-8-1 Remove the side pad R. (See procedure 1.)
14-8-2 Remove the twelve (12) fader knobs and the two (2)
select knobs from the control panel surface.
(Photo.27)
14-8-3 Remove the MAS 2/4 circuit board.
(See procedure 14-5.)
14-8-4 Remove the MAS 3/4 circuit board.
(See procedure 14-6.)
14-8-5 Remove the MAS 4/4 circuit board.
(See procedure 14-7.)
14-8-6 Remove the four (4) screws marked [380]. (Photo.29)
14-8-7 Twist the twenty-four (24) hooks of the MAS 1/4
circuit board to become straight. Then, remove the
MAS 1/4, 3/4, and 4/4 circuit boards. (Photo.30)
The meter reflector, push ON buttons, sleeve ON
buttons, push PFL buttons, holder circuit board,
volume knobs, push HPF buttons, push TAP
buttons, and meter cover, push spacer on the
MAS 1/4 circuit board are not components of
the circuit board. When you replace the MAS 1/
4 circuit board, you should remove the meter
reflector, push ON buttons, sleeve ON buttons,
push PFL buttons, holder circuit board, volume
knobs, push HPF buttons, push TAP buttons, and
meter cover, push spacer from the old MAS 1/4
circuit board, and install in the new circuit board.
(Photo. 31)
At the time of DSP shield base attachment,
please tighten the screw of [760] after putting
the pin of the DSP sheet CN101 into CN503 of
MAS 1/4 sheet. (Photo. 14, 28, 29)
[390A]
[390B]
[390]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
Photo.27
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MAS 1/4
Photo.28
Photo.29
MAS 1/4 MAS 4/4 MAS 3/4 MAS 2/4
[380]
Hooks x24
Photo.30
MAS 3/4
MAS 4/4
MAS 1/4
Photo.31
46
MIXING CONSOLE
CIRCUIT DIAGRAM
CONTENTS
BLOCK DIAGRAM
.................... 3
OVERALL CIRCUIT DIAGRAM
DSP .................................................................................. 4
IN .................................................................................. 5-9
INJK ............................................................................... 10
MAS 1/4 .................................................................... 11-18
MAS 2/4 ......................................................................... 18
MAS 3/4 ......................................................................... 14
MAS 4/4 ......................................................................... 18
MASJK .................................................................... 19, 20
PS ................................................................................... 21
Notation for Circuit Diagrams
1. How to identify inter-sheet connectors
ONLED to page 8: N7
The page number indicates the destination page.
Signal name
This indicates the location of the counter inter-sheet connector.
(The alphabet indicates horizontal direction and the number
indicates vertical direction)
Note: See parts list for details of circuit board component parts.
H G F E D C B A
BLOCK DIAGRAM & LEVEL DIAGRAM CN903, 301, 302 MG24/14FX
MG32/14FX
INJK
JK101, 201, 301, 401, 501,
MG24/14FX: [CH1-8] [CH9-16]
MG32/14FX: [CH1-8] [CH9-16] [CH17-24] IN CN106, 109,111 IC701, 702,
707 (8P)
CN401
(13P)
601, 701, 801
PHANTOM
BCH/SW IC103, 104, 203, 303, GROUP OUT 1-4
GROUP Fader
CH INPUT 304, 403, 503, IC105b, 205b, 305b, [+4dBu]
[-60dBu to -16dBu]
[-34dBu to +10dBu]
A IC101, 102, 201, 301, 302, 401, 501, 504, 603, 703,
502, 601, 701, 702, 801 (8P) 704, 803 (8P)
405b, 505b, 605b,
705b, 805b (8P) G. INSERT I/O
[0dBu] JK401-404
IC705, 706 (8P)
JK501, 502,
503, 504
1
MG24/14FX: CH1-16 B CH Fader CN701 (13P)
MG32/14FX: CH1-24 GAIN
[-60dBu~-16dBu]
[-34dBu~+10dBu] IC703, 704 (8P)
JK102, 202, 302, 402, 502,
CN702 (13P) CN501 (13P)
602, 702, 802 INSERT I/O IC105a, 205a, 305a,
[0dBu] 405a, 505a, 605a,
MG24/14FX: CH1-16
JK103, 203, 303, CN101, 705a, 805a (8P) IC802a IC803 ST OUT
403, 503, 603, 102, ST INSERT I/O (8P) (8P) [+4dBu]
MG32/14FX: CH1-24 103, IC801a
703, 803 [0dBu] L JK601
104 (8P)
CN101, 102,103, 104 (13P) JK505 ST Fader