1 - Introduction to the DA-78HR
water. Do not use abrasive cleaners or solve1.nts4. su6chT hree-core power cord
as alcohol or thinner.
In order to maintain the best possible audio quality,
Avoid subjecting the DA-78HR to jolts, sthudde DenA -78HR is supplied with a 3-core (grounded)
shocks, etc. power cord. DA-78HR should be used with a
grounded power cord, connected to a suitable electri-
NOTE
? IMPORTANT
cal ground, at all times. If it is not, there is a possibil-
If you have to return the unit for service or repair, use
ity that the audio quality will suffer.
the original packing materials if possible. If the unit is
to be transported to a recording location, etc., use a
1.4.7 Powering the DA-78HR off and on
suitable transport case with sufficient shock
When powering the DA-78HR off and on, always
protection.
wait for five seconds or more between powering the
TASCAM does not accept responsibility for damage
unit off and turning it on again. If the power is
resulting from neacciglectde ontr .
switched too quickly, the precision power supply
may not provide the power of the proper quality
1.4.4 Installing the DA-78HR
required for recording.
The DA-78HR may be installed in a standard 19?
If power is inadvertently switched off an on quickly,
rack, occupying 3U of space. Since the DA-78HR is
and the power supply does not respond properly,
quite heavy (around between 7 and 8 kg - about
switch the unit off again, wait for five or more sec-
16 lb.), your rack should be strong and stable to take
onds, and switch it on again.
the weight of the DA-78HR.
The DA-78HR should be mounted with the f1r.on4.t 8 Condensation
panel vertical.
If you use the DA-78HR in a warm place after mov-
ing it from a cold place (for instance, recording on
location), or if there has been a sudden change in
temperature, condensation may occur within the tape
mechanism, with a risk of possible damage to the
unit.
If condensation does occur, you will not be able to
operate the DA-78HR controls, and you will see the
following message on thE DEe diWs (pE DlayE W ).
If you see the above message, leave the DA-78HR
switched on for one or two hours, then switch it off
and on again before starting recording.
1.4.5 Electrical considerations
If you are going to use the DA-78HR in a location
Make sure that your local power supply matches the
where you think condensation is likely to occur,
voltage requirements marked on the rear panel of the
move the DA-78HR into the warmer location about
DA-78HR.
one or two hours before recording is due to start, and
If you are in any doubt concerning the lleocaavle p it sowerw itched on. Turn the DA-78HR off and then
supply, consult an electrician.on again before starting recording.
Avoid extreme voltage fluctuations. If necessary, use
an input voltage regulator to smooth the1 p.o5weRreco supm-mended tapes
plied to the DA-78HR.
Do not open the unit to clean inside, orT htoe pDAe-r78HforRm is designed for use with Hi8 video
any internal adjustments. You should not caasttesetmtpet as.n Yyo u cannot use any other kind of tape with
cleaning or other maintenance proceduresth weh DicAh- 7ar8He R.
not described in this manual.
Always use new tapes, or tapes in the best possible
You may need to clean the heads occasioncaolnldyitio. Thne , in order to achieve the best possible results
procedure for doing this, and for checkiwnhge nt rapeec oerrdrionrg . Tapes which have been over-used
rates, etc., is given in 11.1, ?Head and twill nransoptor gti ve such good results as new tapes.
cleaning?.
TASCAM DA-78HR 9 |
ACEC
