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MOOEL DT45P
PLAYBACK ADJUSTMENT
Proceed with the playback adjustments after having finished the mechanical adjustments.
3. RECORD/PLAYBACK ADJUSTMENT
Step
Item
!nput
terminaU
signal
Test tape
Output
terminal/
test point
Adjustment
point
Miu$tment for
Remarks
1
Dolby
Confirmation
AUX 1
5 k H z
Connect the
VTVM to
TP3 (Lch),
TP4 (Rch) and
T P s ( G N D }
Adjust the input so that the output voltage
between TP3, TP4 and TPS at the Dolby
out position bec-omes 316 mV.
Set to the Dolby B position.
Decrease the input voltage to the level 40dB
lower than the above level and check to
ensure that the point of the 5 kHz output
voltage is 9-1 1 dB higher than the point of
100 Hz output voltage.
Set to the Dolby C position.
Decrease the input voltage to the level 30dB
lower than the output voltage and check to
ensure that the point of 5 kHz output volt-
a g e i s 1 0 - 1 1 . 5 d B h i g h e r t h a n t h e p o i n t t o
100 Hz output voltage.
2
Playback
Level
Adjustment
4OO Hz,
200mVb/m
( T C C - 1 3 0 )
Connect the
VTVM to
T P 6 ( L c h ) ,
T P 7 ( R c h l a n d
T P s ( G N D I .
V R l 0 0 ( L c h )
V R 2 0 0 ( R c h )
1 8 0 m V
3
Playback
Frequency
Characteristic
Confirmation
12O tts + 3180 1rs
Frequency
characteristic
check tape
( M T T . 2 1 6 U )
Connect
the
Frequency
counter to
R E C O U T o f
recerver.
Should be
w i t h i n
specif ication
Step
Item
Input
terminal/
signal
Test tape
Output
terminaU
test point
Adiustment
point
Adjustment for
Remarks
1
Bias
Frequency
Characteristic
Adjustment
Load the cas-
sette tape and
set for recording.
Connect the
frequency
counter to
TP8 and
T P 9 ( L c h )
o r T P l 0
and TPI 1
( R c h ) .
os501
( B I A S O S C )
1 0 5 k H z
Check the bias
frequency
with the beat
cancel switch
set to each
position.
F l : 1 0 0 -
1 0 3 k H z
F l l l : 1 0 7 -
1 1 0 k H z
2
Bias Level
Adjustment
A U X 1
333H2/
1 0 k H z
300mV
Connect the
VTVM and
distortion
meter to
TP8 and
TP9 (Lch)
o r T P l 0
and TPl 1
( R c h ) .
M e t a l : V R 5 0 1
V R 5 0 1 ( L c h l
V R 6 0 1 ( R c h )
Special:
V R 5 O 2
N o r m a l :
VR5O3
M e t a l : 5 0 m V
S p e c i a l : 3 0 m V
N o r m a l : S O m \
Temporary
adjustment
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