Akai HX-R44

VH. ELECTRICAL ADJUSTMENT
7-1. QUICK REVERSE SENSITIVITY ADJUSTMENT
1c 2
Lc7800
Ic3
LC7800
Ici
LM6420H
TPIQ => VRI
SYSCON PCB T2060A5S0IA <— | INCREASE
Fig. 7-1 HX-R44 Quick Rev. Sens. Adjustment Point
REFERENCE
CLEAN POLE
DETECTION
TAPE GUIDE
Fig. 7-2
1)
Make
a
tapeless
cassette
pack
by
removing
the
tape
4)
If
the
Digital
voltmeter
reading
is
not
increase
to
from
the
white
colored
test
tape.
14V
DC
at
VR1
maximum.
Remove
the
Resister
R32
2)
Connect
a
Digital
Voltmeter
between
TP-1
and
(150
kohms)
from
the
system
control
P.C
Board,
Ground.
and
again
adjust
VR1
as
the
same
manner
in
item
3).
3) Using the tapeless cassette pack, adjust VRI so that
the
Digital
voltmeter
reads
14
V
+
0.5
V
DC
at
FWD
NOTE:
Clean
the
reference
pole
and
the
Detection
tape
play
mode.
guide
before
adjustment.
(Refer
to
Fig.
7-2)
Sn
———
SERVICE
MANUAL
HX-R44————————$—
ei
i_i_
11