Yamaha pt 4 tuning scope service manual

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PORTABLE TUNING SCOPE

MODEL PT-4

OPERATION MANUAL

The Yamaha Tuning Scope Model PT-4 is a portable,
eesy-to-use instrument whereby you can ascertain

with your eyes the correct tuning of a musical instrument.
With this unit, tuning accuracy can be verified at a glance,
for any type of instrument.

Please reed this manual carefully,

to make lull use of the revolutionay precision

and convenience the tuning scope affords,

and to avoid abusing its power.

With proper care,

model PT-4 will afford long years of durable,

dependable service for precision tuning.

PARTS and CONTROLS

CENY Ad,
FINE cam Ad,
77 - CHROMATIC SELECTOR
ocnv: SELECTOR

CRT »
POWER Switch
STAND

MIC Jack

Sig Out 7h 7, ,
Cellbrllor 7, 7 iii
AC Com Jack - ¥_

l
[ I , ,_ Vertical Posvllm
i ' ' - Horizontal Position
' Focus

Fig. 1

,7, , _ Inlensdy
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