Yaesu FT-736R Manual

FT-736R

TECHNICAL

SUPPLEMENT

YAESU

MUSEN

CO.,

LTD.

c.P.0.

BOX

1500

TOKYO,

JAPAN

FT-736R

TECHNICAL

SUPPLEMENT

This

manual

intended

serve

supplement

the

FT-736R

Operating

Manual.

Detailed

information

regarding

functions,

installation,

interconnections

and

operation

has

been

provided

the

Operating

Manual,

and

not

reprinted

herein.

Therefore,

this

supplement

not

intended

serve

independent

reference,

but

used

conjunction

with

the

infor-

mation

provided

the

Operating

Manual.

Because

there

are

nearly

five

hundred

semiconductor

devices

the

FT-736R,

circuit

descrip-

tion

information

provided

the

form

numerous

block

diagrams.

hope

that

this

manner

providing

functional

information

proves

convenient

for

the

owner

and

technician

than

would

lengthy

verbal

description.

Those

readers

unfamiliar

with

the

basic

types

analog

and

digital

circuits

that

serve

the

building

blocks

the

FT-736R

are

encouraged

study

instructional

material,

such

that

provided

handbooks

amateur

radio

and

digital

circuit

design,

before

attempting

understand

the

design

the

FT-736R.

Each

block

the

block

diagrams

represents

one

such

basic

circuit,

while

the

Component

Applications

List

provides

additional

details

for

each

semiconductor.

General

information

integrated

circuits

and

their

applications

available

the

data

provided

the

manufac-

turers.

Specific

circuit

details

are

provided

the

schematic

diagrams

this

manual.

While

believe

the

technical

information

this

manual

correct,

Yaesu

assumes

liability

for

damage

that

may

occur

result

typographical

other

errors

that

may

present.

Your

cooperation

pointing

out

any

inconsistencies

the

technical

information

would

appreciated.

Yaesu

Musen

reserves

the

right

make

changes

the

circuitry

this

transceiver,

the

interest

technological

improvement,

without

obligation

notify

owners

modify

any

sets

produced

prior

the

modification.

CONTENTS

CIRCUIT

BOARD

ACCESS

UNIT

PARTS

LAYOUT-------

UNIT

CIRCUIT

DIAGRAM

UNIT

PARTS

LAYOUT

-----

UNIT

CIRCUIT

DIAGRAM

UNIT

PARTS

LAYOUT/CIRCUIT

DIAGRAM-:--

144MHz

MAIN

UNIT

PARTS

LAYOUT

----

144MHz

MAIN

UNIT

CIRCUIT

DIAGRAM

430MHz

UNIT

PARTS

LAYOUT

-------

430MHz

UNIT

CIRCUIT

DIAGRAM

----

430MHz

PLL

UNIT

PARTS

LAYOUT

430MHz

PLL

UNIT

CIRCUIT

DIAGRAM

CNTL

UNIT

PARTS

LAYOUT

-:--

CNTL

UNIT

CIRCUIT

DIAGRAM

DISPLAY,

REG

and

PROTECTOR

UNIT

PARTS

LAYOUT

DISPLAY

CIRCUIT

DIAGRAM

-ssrs+sesssessesseessessees

SW,

ENCODER

and

UNIT

PARTS

LAYOUT

CONNECTION

DIAGRAM

----

BLOCK

DIAGRAM

©»

SIGNAL

TRACING

(SSB

MODE)

SIGNAL

TRACING

(CW

MODE)

SIGNAL

TRACING

(FM

MODE)

----

SEMICONDUCTOR

CROSS-REFERENCE

EXPLODED

VIEW

50MHz

BAND

MODULE

(FEX-736-50)

OPTION

220MHz

BAND

MODULE

(FEX-736-220)

OPTION

1200MHz

BAND

MODULE

(FEX-736-1.2)

OPTION

LEVEL

DIAGRAM

(144MHz

RX)

-*--

LEVEL

DIAGRAM

(430MHz

RX)

LEVEL

DIAGRAM

(144MHz

TX)

LEVEL

DIAGRAM

(430MHz

TX)

ALIGNMENT

(Transmitter)

ALIGNMENT

(Receiver)

----

ALIGNMENT

(FEX-736-50)

ALIGNMENT

(FEX-736-220)

ALIGNMENT

(FEX-736-1.2)

PARTS

LIST

sstssassvessensvessssvssccsasssacunss

eueeng

pes

seneaabegsieaass

sovesa

sae

teep

putas

Gadey

Tor

nen

CIRCUIT

BOARD

ACCESS

TOP

COVER

The

following

units

(pcb's)

are

accessed

removing

the top

cover:

Unit

144

MHz

Main

Unit

144

430

MHz

Units

430

MHz

PLL

Unit

430

MHz

Unit

430

MHz

Front

End

Unit

Protector

Unit

remove

the

top

cover,

remove

the

eight

—

screws

each

marked

%&"

%")

Figure

1).

Then

lift

the

cover

off

slowly

not

stress

the

loudspeaker

wires.

Unplug

these

wires

from

J3016

the

Unit

before

pulling

the

cover

away.

UNIT

144MHz

UNIT

PROTECTOR

UNIT

“w¥4MHz

MAIN

UNIT

430MHz

FRONT

UNIT

430MHz

UNIT

430MHz

PLL

UNIT

430MHz

UNIT

Figure

CIRCUIT

BOARD

ACCESS

BOTTOM

COVER

Removing

the

bottom

cover

exposes

the

following

units:

Power

Supply

Unit

Reg

Unit

Optional

Band

Modules

Unit

remove

the

bottom

cover,

remove

the

twelve

screws

marked

3%"

and

marked

"©")

Figure

1).

FEX-736-1.2

FEX-736-50

POWER

SUPPLY

UNIT

Figure

TOT

FRONT PANEL

HINGE

When

the top

and

bottom

covers

have

been

removed,

the

front

can

slid

forward

and

folded

down

after

loosening

the

two

screws

either

side,

shown

Figure

This

provides

access

the

following

boards:

Control

Unit

Display

Unit

VR-A,

-B,

-C

and

-D

Units

SW-A,

-B

and

-C

Unit

Encoder

Unit

CNTL

UNIT

ROTARY

ENCODER

‘VR-D

UNIT

VR-B

UNIT

Sw-B

VR-A

ENCODER

SW-A

VRC

DISPLAY

UNIT

SW-C

Figure

Component

side

Component

side

UNIT

(reverse)

UNIT

PARTS

LAYOUT

New

uPC1037H(Q3003,3046)

uPC577H(Q3021)

LA6324M(Q9301,9401)

jar

GATE?

[SOURCE

CRAIN

MC145163SL(09801)

2SK125(03006)

3SK74L(03032,3036)

(CATHODE

‘ANODE

1/CATHODE

NOE

CATHODE

Marked

surface

Marked

Surtace

Marked

Surtace

2SC2619F

(FB)

(09802,9803)

1SS184(B3)

(09301,9401)

1SS226(C3)

(09302)

2SC2712GR(LG)

(Q9001,9003,9005)

FAIA4M(L33)

(Q9402,9403)

FA1F4N(L35)

(09002,9004)

13MHz

PLL

UNIT

SCAN

UNIT

©®

@®@®

D®@®D

Solder

side

(obverse)

Solder

side

(obverse)

SCAN

UNIT

(No.

94X

13MHz

PLL

UNIT

(No.

98x

OQ9@QG

@@®

®B

Solder

side

(obverse)

Solder

side

(obverse)

UNIT

PARTS

LAYOUT

ibs

ooor”

o=s(a

COLLECTOR

EMITTER

COLLECTOR

ie,

—

EMITTER

BASE-

GATE

2SA460B(03002,3044)

BA1A4M(Q3030)

2SK241GR

2SA733AP(03055)

BAIA4P

(Q3007,3008,3049)

2SC458C

03024-3027,3040,3041

03010-3013,3016-3018

(

3054,3056

)

3020,3022,3023,3028

BAIL4L

3029,3031,3033-3035

(03042-3045)

3037-3039

BN1A4P(03047,3048)

2SC535B

(Q3001,3005,3009,3019)

UNIT

VOLTAGE

CHART

(DC

VOLTS)

UNIT

VOLTAGE

CHART

(0c

voLTs)

side

(reverse)

“03

aoz

28C2619F

PLL

UNIT

F2892109

(Na98xx)

DHODOOS

OOO

Gbrede

BESES

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