Brother International HL 1850 Service Manual - Page 253

Appendix

4.

Main

PCB

Circuit

Diagram,

HL

-1850/1870N

(3/6)

PCI

2

ant

mse.x

,

"

Pu99,.

4.42,X

11

Punt

PXEC

0437,(

./

92141741

parrta

Ptir

,

>81

0.9

Pap.,

122

oz,ix

P+oucE

^a

psolAK

P141,5*..

NOM<

P.i9X

24,959X`'

91.224K

15

P.99,‹

2.24t,

n

SS

171

3

0

ro

PH:1b

Sse

7

18

195

4.911•C

9122A,

cpasery.,..

.22

131

VOJJ

1®

rta

QTiiil

Rffel,<

.

‘"

.99.

099931

QC,

QA

aQ

cycl

Cri:f

QG

av

&CI

Qa

cto

acr

9

, 0

at,

acr

-

24.12.5.

EGO

199

au

O

IOW

moo

to,

4290

Wee

-

99212:994,

AO.

..KFOET

6

r

omiel

oo

.

a.

olnk.

Curatsi

049.94

Co..21

(..71

(494.1

amtei

99.121

CAW.

amtlel

Dap.

amosi

CurAtl.

9499,521

C9991.,

04

949

)91

9494.1

9499(21I

C494.2I

0474(231

9494(291

CATA(251

CarAtael

0494.71

cprafa,

Cara(291

.94,91

9494.9

D

I

MIA

,APP

-8

LIT

,

F?

cT_

p

'0

77

r

>9

23

t.

:,z

,

,,..

,,,__,,

et:WU

',I.°

'Oa'

""

xtr

,

“

'L

7-

,

,T

P

'

,,

no.

'Cif;

f'

....

..

,

:,

,

E,P

`.:¢as

'IL.

,,

E

1145

99

,

Fi75

21

2

6

-

';5

7

.:r.8

2.49

11

.99.294

MP,

0,4

PC,04.2c

la

Pee

I

7

7

,

cz,

,

,(ru.E.

GE

CE12

-.

9)

1:1

7

'f

>Tom

"',.(1ei

tax.

9204.994.

-"

M.%

-

')92,94914.9

6:13460..

910

93.9?

..40

3iIMS.A1

393.42.3

,

23

/oat.,

.15)

ta+t

S47

mm027

XAfisl

:La.)

uNtto

/oat:,

A9293

.53

941137

era,.

-

",,i3

,

1atUeeks6

:.

utlate

.9

riP/Plo

9S)

48

oa

9.3

)299929..91.99..,

44,

-

er

-

re

)Mrille,.4.9EPaptinv

)

coex,..coastiao

ASIC

D

I

Ivlivl

CODE

LJ8453001

NAME

B512078CIR

(316)

2

3

5

5

a I

5

A

-

4

Brother International HL 1850 Service Manual - Page 253

et:WU, B512078CIR

Page 253 highlights