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DA-U630
DISASSEMBLY
screws should be avoided,
(1) First, remove the 4 set screws of the top cover. Then,
screws are removed,
SEMBLY TO UPRIGHT POSITION
top cover.
Unscrew screw
(1) shown in Fig. 1.
The
board
can
be set upright, by slowly sliding the
whole board to the right and raising it.
*
REMOVAL OF PANEL-ASSY (FRONT)
Following
the
instructions
given
in 1-({1), take
off
the top cover.
The front panel will come off when the two set screws
are removed from the bottom side.
SETTING
OF
BOARD
PA-89
(PRE
AMP
AND
EQUALISNTION ) TO UPRIGHT POSITION.
Following the instructions given in 1-(1), remove the
top cover.
Remove
the screw provided behind the SW at the left
end
of the
upper-side
board
and take off the jack
from
the
board.
Now,
the board
can
be set upright,
t
VOLUME
Top view of front panel
Fig. 1
SETTING
OF BOARD
PMA—14
(POWER
AMP AND
POWER SUPPLY) TO UPRIGHT POSITION
b.
Unscrew
the screws
descrided
in ''4-a" and set board
DA-89 to an upright position,
c.
Unscrew
the
six
screws (1) shown
in Fig. 2. Now,
board
PMA-14
can
be raised to an upright position.
Black lead wire with lig terminal
Onc
oe
| co
male
Ae
®,
"Dee
_
—
Fig. 2
ADJUSTMENT
ADJUSTMENT
OF
LEVEL
METER
OFFSET
VOLTAGE.
1.
Following
the disassembly
instructions
give in "2",
set the
level
indicator
board
to an upright
position,
2.
Adjustment is to be performed at "'no-signal"'.
3.
Connect
a
DC
voltmeter
between
the
earth
and
Terminal No. 5 of 1C481 and !C581.
4.
By turning VR481
and VR581
respectivly, adjust for
minimum voltage.
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