Tape Speed Adjustment
Procedure:
Mode: FWD playback
speed checker
L FM-30
digital frequency
test tape
Ws-488
(3 k Hz, 0 dB)
counter
0
I
LINE OUT
Specification:
Speed checker
Digital frequency counter
-1-+1%
2,970-3,030Hz
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 R E V
Adjustment screw
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