2-39
UX-G6/FS-G6
Main adjustment
1.Measuring instruments required for adjustment
(1) Low frequency oscillator
This oscillator should be capable of outputting
0dB (0.775V) at the 600W terminal at an
oscillation frequency of 50 - 20kHz.
(2) Attenuator (Impedance: 600 )
(3) Electronic voltmeter
(4) Standard tapes for measurement
VT712 (for measuring the tape speed and
wow flatter)
VT724 (Reference level) (1kHz)
TMT735 (for measuring the playing (playback)
frequency characteristics) (1kHz and 12.5kHz)
TMT6447 and TMT6448 (for music scanning)
VT705 (12.5kHz) (for adjusting the head
azimuth)
(5) Standard recording tape
AC-225 (TDK AD), AC-514 (TDK SA), or
equivalent (Be sure to use only the standard
recording (measurement) tapes specified by
this division).
(6) 600
resistors and so forth (for attenuator
matching)
(7) Distortion meter (band pass filter)
(8) Torque gauge (cassette)
For adjusting the torque related to CTG-N,
TW211,TW2121, TW2231 and TW2241
(9) Wow flatter meter
(10) Frequency counter
(11) M300 gauge (Gauge M300)
(12) Band pass filter
2.Setting of the respective switches and volume
knobs
Dolby NR switch : OFF
Reverse mode : ON
Power supply switch : ON
3.Arrangement of adjusting positions
VR671
Adjustment of
motor speed
Loading
mechanism
board
Test point CN641
LR
GND
VR614,VR624
Adjustment of recording
and playing sensitivity
Dolby board
Pin 8 of IC635
Confirmation
of dolby circuit
recording
Main board
VR621,VR611
Adjustment of
playing lavel
VR622,VR612
Adjustment of
playing equalizer
VR613,VR623
Adjustment of
recording and playing
frequency characteristics
L6351,TP631,TP632
Adjustment of
bias frequency
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