Advertisement
TD-MXG9BK
Adjustment Procedures(Cassette
Deck)
1
2.
Measuring instruments
.
Audio frequency signal generator ( Cdbs output at the 600 ohm output terminal from 50Hz to 20KHz)
Electronic: voltmeter
Frequency counter
Wow & Flutter meter
Distortion Meter with band pass filter
Attenuator (600 ohm impedance)
A resistor with 6000
Standard Tape
oo
vir703L
= 10d
vir
vires
= Ades
Twavinrwaras_|
= [Cd
eer revere play torque mensaring |
heat
P=
aed
ora nied grave oneeng
Adjustment
and repairing
the mechanism
value
Deck A
1. Refer to figure 1.
1. Connect an electronic voitmeter to the VCR REC
See
wr
:
OUT to playback VTT-703L.
;
2. When the specified characteristic cannot be
2. Adjust screw @ so that the indication of the
obtained because of head wear, excessive
voltmeter becomes maximum when PLAY (B) is
magnetization, etc. replace the head
pressed.
assembly and adjust the head azimuth.
3. Adjust screw ® so thatthe indication of the
Also, perform the electric adjustment.
voltmeter becomes maximum
when PLAY («@) is-
3. When there is the difference of more than
-
3~4 dB between left and right output
pressed,
Deck B
levels, replace the head assembly to avoid
4, Adjust screw © so that the indication of the
complaints.
voltmeter becomes maximum when PLAY (i)
is pressed.
5. Adjust screw @so that the indication of the
voltmeter becomes maximum when PLAY (<@}
is pressed.
6. After making the adjustment,apply screw lock to
prevent screws ® ,®@ , Q and © coming loose.
OdBs = 0.775V
Head
Maximum
azimuth
Playback
=/1. Measure the torque in the playback mode by. | 26~67
|When the standard torque cannot be obtained,
torque
the torqu meter.
g-cm
replace the FRarm assembly or motor.
Fast forward
|1. Measure the torque in the fast forward mode | 80~ 200
|When the standard torque cannot be
torque
by the torqu meter
7
g-cm
obtained,replace the FR arm assembly or motor.
Rewind
1, Measure the torque in the rewind mode by
80~ 200
{When the standard torque cannot be
torque.
the torqu meter.
_
g-em
obtained, replace the FRarm assembly or motor.
Wow
i. Connect the wow & flutter meter to the
Laas
th
As a complaint may occur if the wow & flutter
rm a
DOLBY TP(figure 3) and play back VIT-712.
esstan
| fluctuates by 0.1% even though it is allowed
;
utter
2. Its reading should be within 0.2% (WTD).
0.2%
_|in the standard, repairing is required.
@
®
Deck A
Figure 1
(No.20437}1-9
Advertisement
