Yamaha MR1642 Service Manual - Page 10

MR842/MR1242/MR1642

MR842/MR1242/MR1642

MCIRCUIT

BOARDS

F40

•MR

-A

&

MR

-Al

Circuit

Boards

GROUP.

1

-8

[CUEI

PAN

3-4

TAPE

AUX3

AUX2

AUX1

LOW

MID

MID

FREQ.

HIGH

CLIP

GAIN

PAD

TAPE

C

SW106

PAN

I

I

I

I

I

I

I

GROUP

TAPE

4

3

2

1

I

I

I

I

1

SW104

SW103

LEVEL

VR

AUX

3

I

re

I

I

I I

I

I

I I

0

R139

U)

K

C128

40

it

AUX

2

0

u)

C129

I

K

•••

I

I

`

,

2

I

Tut

Ar

TI

I

I

II

I

I

I I

I

I

AUX1

0

LOW

to

er

ao

.e4

tV

T

*co

U

Mo

N

tX

MID

l

ts

/

00

I

T

U

I

U

I

N.

N

N

0

to

z)

T

Imi.r

1 I I I

1

1

c..)

U

I

I

1 1

U

T

MID

FREQ.

to

HIGH

gr.

L

1C101

1

T

T

•

w

ip

U

T.

0161.

I

it

C104

ti

C

;

C165

R111

R113

D101

120

CII

1

ao

0

RI61

R103

GAIN

r

C

C106

IO7

)102

14

/01

6

IN

1108

R10

Q101

C103

C102

C101

\

/

PAD

-

TAPE

-

t

SW

SW101

102

I

•MR

-B

Circuit

Board

a

anv00

arviCia

0

sa

a

IseD

PA

soil

VO2SAt

1

-

040

S000

SO411

vo?sAr

roaJ

-41-..

1

,

011

V02SAS

Oa

C

4

•_/

"

'

1

0

1OF-

-if—

0

0

0001

VO

A

rse3

Pattern

side

(•:'q—;,11TD

Notes)

•

Circuit

Board:

MR

-A

(NX806650)

Circuit

Board:

MR

-Al

(NX807630)

IC

IC

101-103:

2.

Transistor

Q

101-102:

Q

103:

Q

104:

3.

LED

D

101:

4.

Rotary

VR

VR

101:

VR

102, 104,

105:

VR

103:

VR

106-108:

VR

109:

5.

Slide

VR

VR

110:

6.

Push

Switch

SW

101:

SW

103:

SW

106:

NJM4558DV

(IG001390)

OP

AMP.

2SA970

BL

(1A097010)

2SC1313

(1X802930)

2SA726

(1X802920)

103HD

el)

2

RED

(IX802980)

CLIP

-05C10K

(HX801960)

V16L4

N15KC

GAIN

-B50kc.c.

(HX801970)

V16L4

N15KC

HI,

MID,

LO

-15C100Kx2

(HX802010)

V16L4

N15KCG3-1

MID

IFREQ

-15A25K

(HX801980)

V16L4

N15KC

AUX1,

2,

3

-15A25Kx2

(HX802000)

V16L4

N15KCG3-1

PAN

RS60Y11G4023-

(HX802030)

10KA-PJ

Fader

SPUE20AE08-PJ

(KX801930)

TAPE,

PAD

SPUE30AE24-PJ

(KX801920)

TAPE,

1-2,

3-4

KPB122-SNAL

(KX800750)

CUE

A

circuit

board

Al

circuit

board

MR842

Ch,

1

-Ch.

7

Ch.

8

MR1242

Ch,

1

-Ch.

11

Ch.12

MR1642

Ch,

1

-Ch.

15

Ch.16

"

The

Al

circuit

board

is

essentially

the

same

as

a

A

circuit

board.

The

diff

f

Al

circui

oar

t

b

d

from

are

A

Connector

d

T2.

assembly

Ti

an

(A

h

A

Ass'y

T

1

T

20)

C

0

—

T

.

P

)

c7).

erence

o

Notes)

•

Circuit

Board:

MR

-B

(NX806660)

1.

Diode

Bridge

2.

Ceramic

Cap.

C

901:

C

921,

92:2:

3.

Ele

trolytic

Cap.

C

902:

C

923-926:

Components

side

(Safi)

PBL405

(IX802950)

2W06

(1X802960)

2960)

4700pF

DC500V

(HX802090)

4700pF

DC250V

(HX802080)

1000

μF

100V

(FL299100)

3300

μF

35V

(FL259330)

12

13

Yamaha MR1642 Service Manual - Page 10

Mcircuit, Boards

Page 10 highlights