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TAPE
DECK
ADJUSTMENTS
.
Measuring
:
Adjust
Adjust
ex
Sp
re
HEAD
AZIMUTH
(a)
HEAD AZIMUTH
AC-voltmeter
EAKER TER
AL
SCREW
Max.
(FWD
/ REVERSE)
(b) MOTOR SPEED
MTT-111
FREQUENCY
CN303
(1 &2)
SPEAKER TERMINAL
VR302
3,000 H
(NORMAL)
(3,000 Hz)
COUNTER
'
"OPEN"
TCW-211
FREQUENCY
CN303 (1 &2
(c) MOTOR
SPEED
Q
SPEAKER TERMINAL
VR301
3,000 Hz
:
(
J
)
(HIGH )
(1,500 Hz)
COUNTER
SHORT
a.
HEAD REPLACEMENT AND AZIMUTH ADJUSTMENT
VTT738 etc.
(10 kHz)
(a) Head replacement
(1) After replacement, demagnetize the heads by using
E. & R/P HEAD
a degausser.
:
(2) Be sure to clean the heads before attempting to
make any adjustments.
(3)
Be sure both channels (1 and 2) are the same level
(Using a dual-channel oscilloscope).
RED
YELLOW
BLACK
RANGE
BLUE
WHITE
(b) Head
azimuth
(1)
Load a test tape (VTT-738, etc.: 10 kHz) for azimuth
;
adjustment.
(2)
Press the Forward PLAY button (normal playback).
(3) Use a flat-tip ( - ) screwdriver to turn the screw for
normal azimuth adjustment so that the left and right
outputs are maximized at the same phase during
normal playback.
(4) Press the Reverse mode button.
(5)
Play the tape in the reverse mode.
(8) Use a flat-to- ( - ) screwdriver to turn the screw for
a]
reverse azimuth adjustment so that the left and right
REVERSE a
outputs are maximized at the same phase during
NORMAL
reverse playback.
(7)
Press the STOP button.
® After making the adjustment, secure the azimuth
:
adjustment screw by applying screw lock (TB-1401B).
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