Pioneer RT-707 - Playback and Record Head Fine Adjustment

10.2 PLAYBACK HEAD ADJUSTMENT
10.3 RECORD HEAD ADJUSTMENT
e Connect a voltmeter (millivoltmeter) to the
LINE OUTPUT terminals (Fig. 32).
e Run the angle standard signal 15kHz of test
tape
STD-154
at
19cm/s.
@
After
the
playback
head
has
been
adjusted,
ap-
ply a 1kHz signal to the LINE INPUT terminals.
@ Simultaneous record/play on test tape STD-502
(Fig. 32).
@
FWD
PLAY
(REV
PLAY)
1.
38
Adjust screw @ (REV PLAY... ® ) of Fig.
31 for maximum output level at both the L
and R channels. The difference in the L and R
channels output does not require attention
unless it is too large.
. When the output difference is excessive, loosen
screws @, @ (REV PLAY... ®, @ ) and
determine the optimum position while turning
the head within the horizontal plane (left,
right).
. Adjust screws @, @, and @ of Fig. 30 for
maximum R channel output level at the volt-
meter (millivoltmeter) connected to the LINE
OUTPUT terminals.
.
Next,
apply
a
15kHz
signal,
set
to
the
simul-
taneous
record/play
mode
and
fine
adjust
screw
@
of
Fig.
30
for
maximum
L
and
R
channel
output.
. Confirm that the output does not change even
when the front of the head is pushed lightly
with your finger while the tape is running.
. When there is a difference in the L and R chan-
nel output, loosen screws @, @ of Fig. 30
and determine the optimum position while
turning the head in the horizontal plane (left,
right).
Millivoltmeter
Fig. 32