Tape Speed Adjustment
DECK A DECK B
Procedure :
r
Perform high speed adjustment before normal speed adjustment.
Mode : Playback
+
–
MD OUT
set
frequency counter
test tape
WS-48B
(3kHz, – 0dB)
Speed
Deck
Adjustment
Frequency counter
*High
A
RV652
5,970 to 6,030Hz
B
RV652
Normal
A
RV651
2,940 to 3,090Hz
B
RV651
*
Continus to press HIGH SPEED DUBBING switch (S507) in
playback mode : High speed palyback.
Frequency difference between the begining and the end of the tape
should be within ± 3%.
Frequency difference between deck A and deck B the biginning
of the tape should be within 1.5%.
Adjustment Location : AUDIO board.
(see page 12)
Playback Level Adjustment DECK A DECK B
Procedure :
Mode : Playback
set
MD OUT
+
–
test tape
P-4-L300
(315kHz, –10dB)
Level meter
Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301 (L-
CH) and RV401 (R-CH) so that adjustment within adjustment level
as follows.
Adjustment Level :
MD OUT level : – 3.5 ± 0.5dB (0.489 to 0.546V)
Level Difference between Channels : within 0.5dB
Confirm the OUT PUT level does not change in playback mode while
changing the mode from playback to stop several times.
Adjustment Location : AUDIO board.
(see page 12)
L-CH
peak
R-CH
peak
L-CH
peak
R-CH
peak
Screw
position
output
level
within
1 dB
within
1 dB
screw angle
2. Turn the adjustment screw for the maximum output levels. If
these levels do not match,turn the adjustment screw until both
of output levels match together within 1dB.
3. Playback Mode
MD OUT
screen patten
V
H
set
test tape
P-4-A100
(10kHz, – 10dB)
Oscilloscope
R-CH
in phase
45˚
90˚
135˚
180˚
wrong
L-CH
Change the review playback mode and repeat the steps 1 to 3.
After the adjustment, lock the adjustment screw with suit
able locking compound.
– record/playback head (Deck A and B)
Dack B
forward
reverse
Adjustment Screw
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