Tape Speed Adjustment
Procedure:
Mode: FWD playback
speed checker
L FM-30
digital frequency
test
tape
Ws-488
(3 k Hz,
0
dB)
counter
m
c
?Jl
0
I
LINE OUT
Specification:
1
Speed checker
1
Digital frequency counter
1
r~
-1-+1%
I
2,970-3,030Hz
I
Frequency difference between the beginning
and the end of the tape should be within 0.84%
(25Hz).
Adjustment Location:
Adjust by using a screwdriver. Turning in the
direction of clockwise, speed will be fast.
Adjustment resistor
motor
Record/Playback
Head Azimuth Adjustment
Procedure: Adjust both NOR and REV.
1.
Mode: playback
test tape
P-4-A 100
VTVM
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 1
dB.
L-CH
peak
\
/
position
peak
peak
3. Phase Check
Mode: playback
Test
tape
P-4-A100
(10kHz, -1OdB)
A
L-CH
oscilloscope
LINE
OUT
Adjustment Location:
-
Record/Playback head
-
FWD
REV
Adjustment screw
-8-
w
w
w
.
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3
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2
8
9
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2
9
8
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1
3
9
4
2
2
9
6
5
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8
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5
1
5
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3
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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