Dual AX440 Service Manual download pdf (Page 11)

PTONEER

ALIGN

M ENT

INSTRUCTION

Please

read these

instruction with

extreme

care before

attempting

alignment.

*

Test Equipment.

1)Standard

Signal Generator.

2) VTVM,

DC,

AC 3)

Oscilloscope.

"

Attention

on Alignment,

1) Signal

Generator lnput:

Always

use

the

minimum

generator

input that

provides

a satisfactory

output

indication.

2)

When

connecting

the

test

equipment to the

input, use a shielded

wire

that

is

as

short

as

possible.

ALIGNMENT

OF AM SECTION

*

VTVM

and oscilloscope

should be

connected in

parallel

at the

output.

Position

of Switch: SELECTOR

. .

.

AM

Volume

Control Setting: Fully counterclockwise

DIAL

CORD

STRINGING

Step

i nput

Dial

S etting

Output

Eq u iprnent

C on nections

Alrgnment

Eq

u i

pment

C on nections

F

req uency

Level

Adj

ust

Rema

rks

I

Sweep

generator

Antenna

terminal

dummy

455kH

z 5 0dB

Point

of no

interference

as

near as

535kHz

0sci lloscope

Itir

Tzos

T zot

Tzoa

Adjust

for maximum

sensitivity and

sVmmetrical

characteristics.

2

Signal

generator

to antenna

ter

minal

through

dummy

600kH

z 30dB

600k H z

T zas

Adjust

for

maximum

deflection.

3

1,400k H

z

1,400k H

z

CT

4

Repeat

steps 2 a"d i

severa'

times.

5

S

gnal generator

Antenna

terminal

dummy

600kH z

30d B

0scilloscope

(B

Ferrrte

Antenna

(Adj

usting

core)

Adjust

for

maximum

difldcction.

6

I,400k H

z

l.400k H z

CT zos

7

Repeat

steps 5 and 6

several

times

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 20 21

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