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TD-W717TNevs
|
TD-W718BKaeeevcuut
@ Mechanism Adjstment
OdBs = 0.775V
Adjustment and Confirmation
Standad value
Adjust point
Test tape :VTT704_
'| 1. Connect an electronic voltmeter to the
(12.5kHz)
LINE OUT terminals.
2. Play back the VTT704 (12.5kHz) test tape.
3. Adjust the head angle with the screw
(FWD
and REV) until the reading of the
electronic voltmeter becomes maximum
for both channels (phase difference must
be "0".)
4. Repeat the adjustment in FWD and REV
modes as well as for the decks A and B.
5. Confirm that difference level between
deck A and deck B within 2dB.
Normal speed:
Deck (Al :
Adjust VR701 (deck [A]) and VR703 (deck
[B}) for normal speed at 3000Hz.
5. Adjust for high speed
deck for play mode
and shortcircuit
between H. SPEED
TP and GND.
After adjustment
of normal
speed,
3.Do not do anything}
adjust VR702 (deck [A] ) and VR704
while H. SPEED
(deck
) for high speed at 6000Hz.
and TP GND are
shortcircuited.
Test tape:
VTT-712 (8kHz)
6. Difference in FWD and REV frequencies
must be less than 48Hz.
less than 0.17%
_
|_|
Connect a wow and flutter meter to LINE
OUT terminals. Play back the VTT712
test
tape. Check to see if the reading of the meter
is less than 0.17% (WRMS).
Test tape:
VTT-712 (3kHz)
Employ a torque testing cassette tape
(TW2111[FWD] / TW2121[REV}] for the
checking, or remove the cassette cover and
use a torque gauge.
Torque gauge
TWe2111(FWD)
TW2121(REV)
Measure the torque in the fast forward mode
in the same manner as in the above.
Test cassette : TW2231 (FWD),
TW2241 (REV)
TW2241(REV)
Checking
fast forward/
rewind torque
(No. 4358) 19
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