KS-FX925R
1-19
1.Tape position
2.Head azimuth ajust
and check
3.Tape speed
WOW & Flutter
4.Playback frequency
responce
Internal
v.resistor
Tape speed
2940~3090Hz
WOW & Flutter
less than 0.35%
(RMS)
Speaker output
1kHZ/10kHz
:0 3dB
1kHZ/63Hz
:-4 2dB
Tape position NG
OK
Head
Head
Tape guide
Tape
45
Azimuth
screw A
Azimuth
screw B
Item
Adjustment and check method
Adjust
Spec
PHASE
0
a)
b)
c)
Playback at FWD side, use the mirror tape and
adjuste azimuth screw A and B, check the tape
position at tape guide position of the head.
Playback at REV side, use the mirror tape and
adjuste azimuth screw A and B, check the tape
position at tape guide position of the head.
Playback at FWD and REV both side, check the
tape position at tape guide position at the head.
a)
*
b)
*
c)
d)
Playback at FWD side, adjuste azimuth screw A
to make peak position of Lch /Rch.
Oscilloscope wave forme standard is 45 digrees.
Playback at REV side, adjuste azimuth screw B to
make peak position of Lch/Rch.
Oscilloscope wave forme standard si 45 digrees.
Chech the level difference of FWD side and REV
side less than 3dB by VTVM.
After operation check, Lch/Rch azimuth output
level difference is less than 1 dB at adjustment
level.
a)
b)
Check the frequency counter and wow flutter
meter are 2940~3090Hz(FWD/REV), less than
0.35%(RMS).
If tape speed is not clear the specification, adjust
the v.resistor inside of motor.
a)
b)
Playback the test tape(VT724:1kHz), spreaker
output set to 2V by set volume.
Playback the test tape(VT739), check level differe
to 0 3dB at 1kHz/10kHz, -4dB 2dB at
1kHz/63Hz.
10kHz level is not clear the specification, readjust
the head azimuth.
