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I
E.45P
I
MODEL DT.45P
ADJUSTMENT PROCEDURE FOR DT-45P
Before adjustment
.
C o n n e c t w i t h t h e r e c e i v e r D A - R 4 5 P b y u s i n g t h e s i g n a l c a b l e .
.
M a k e s u r e t o c a r r y o u t t h e s t e p s 1 t o 3 o f , , l . M e c h a n i s m a d j u s t m e n t , .
before adlustment, or the test tape and others may get damaged.
o To prevent each measurement error due to magnetization or
dirt, be sure to
carry out head-erase and headcleaning.
Switch settings
sln,tTcH
P O S I T I O N
B E A T C A N C E L
F t l
T A P E S E L E C T O R
n o r m a l
D O L B Y N R
o u l
1 . M E C H A N I C A L A D J U S T M E N T
Step
Item
Test tape
tools used
Output terminal
test point
Adjustment
point
Adjustment for
Remarks
1
Head guide
Tape gtride
adjustment
Head gauge
M-300
Head f ixing screw
G u i d e f i x i n g s c r e w
Each guide
should be in
place.
2
Each Torque
Confirmation
Cassette
torgue
meter
F F , R E W
85-'l 80s/cm
Take up
40 t 709/cm
For take up
torque, read
the central
v a l u e o f t h e
m e l e r p o t n t e r
def lection
d u r i n g p l a y .
3
Tape Travel
Confirmation
M i r r o r
cassette
The tape
s h o u l d r u n
s m o o t h l y .
Check both
forward and
reverse side.
4
Head azimuth
Adjustment
Connect VTVM and
the oscilloscooe to
R E C O U T o f t h e
recetver
H e a d A z i m u t h
Adjustment screw
Adjust so
that the
output levels
o f L a n d R
channels are
in the same
phase at
m a x r m u m .
Adjust on
both forward
and reverse
sides.
Reverse the
test tape for
measurement
on the reverse
s i d e .
Recheck the
steps 1 to 3
after the
a z i m u t h
adjustment.
5
Tape Speed/
Wow Flutter
Confirmation
3 k H z , - 1 0 d 8
( T C C - 1 1 2 )
Connect the
Frequency counter
t o R E C O U T o f
recelver.
301 0!60H2
less than 0.23%
6
Leader tape
Detect Level
Adjustment
A D l 2 0
Connect VTVM to
TPI (+) andTP2
( - ) .
V R 9 O l
At leader tape:
m o r e t h a n 3 . 5 V
At magneticbody
l e s s t h a n 1 . 5 V
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