Akai GX-77 Service Manual

FwO : H (+10V)
REV: L (OV)
TIMER SW
PLAY O+10V
A
FWO=eREV swi-2
=
Lad
v
+10V
1c 1 @)
OIRECTION
ne | ict @9(REV)
vss (+10V) ed @ewo)
Fig. 21
3. EXPLANATION OF EACH CIRCUIT
1)
Circuit
to
Prevent
Tape
Sagging
When
Power
is
ON
and
in
the
meantime,
the
right
and
left
reel
motors
+14V
>
REV,
FWD
PLG
>
C5,C6
>
D19,
D18
>
are
energized
to
prevent
the
tape
from
sagging
R56,
R58
+
TR22,
24
runs
the
charging
current,
(Brake
is
also
mechanically
on
the
reel
table).
SL902
REV PLUNGER
HIGH VOLTAGE
LOW VOLTAGE
Fig. 22
21

Akai GX-77 Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	3 3/4 ips, 7 1/2 ips
Wow and Flutter	0.03% (19 cm/s)
Heads	3
Motors	3
Dimensions	440 x 244 x 358mm
Inputs	Line input (RCA)
Outputs	Line, Headphones