Akai GX-2800D-SS User Manual

a
1.
FROM
STOP
TO
FORWARD
PLAYBACK
2)
From
Reverse
to
Forward
Play
:
4.
TR107
emi
When
the
FWD
Button
is
depressed
or
the
sensing
When
the
FWD
Button
is
depressed,
T
107
emitter
tape
passes
the
sensing
pole,
TRI11
is
turned
is
grounded,
and
TR107
passes
RL104
and
is
turned
off
and
TRI10
is
turned.
on.
Becaiise
TRI11.
48
on.
TR107
is
maintained
at
“on”
by
RL104
con-
turned
off,
RL10S
and
RL106
as
well
as
RLI
tact point Play-1.
The Pinch Roller Plunger and Brake Plunger cur-
rent passes Play-3 and is turned on. The voltage
passes Play-4 and is divided by means of Rla (350Q)
and R2a (602). About 55V (60V 60Hz) is supplied
to the Take-up Motor and about 30V (35V 60Hz)
to the Supply Motor. At 7-1/2 ips, 110V is applied
to the Main Motor and at 3-3/4 ips, 85V is applied
to the Main Motor.
are turned off. When RL106 is momentarily
turned off, C102 passes R103 and VR1O1 and
discharge commences. C102 discharge current
flows to the base of TR101 and TR102 and they
are turned on. When this occurs, RL101 is turned
on and the Brake Plunger as well as the Pinch
Roller Plunger are tufned off. At this time, the
capstan motor begins forward revolutions. (While
; RL101 is “on”, because increased torque is
At Forward Playback, TR110 is turned on, and applied to the capstan motor, high voltage is
TRI111 is turned off. C101 of T.D. Circuit passes applied.)
R101 and is charged. When discharge of C102 is completed, TR101
and TR102 is also turned off and voltage is
2. 2-CHANNEL AUTOMATIC REVERSE supplied to the Pinch Roller Plunger as well as
PLAYBACK to the Brake Plunger and Forward Playback is
1) From Forward to Reverse Playback effected. Charge of C101 is begun. (If Shut-off
When the Reverse Button is depressed or when Switch is at “on” position, this operation will
the sensing tape passes the sensing pole, TR110 not take place.)
is turned off and TR1il1 is turned on. Conse-
quently, RL105, RL106, and RLi of Switch 3. FAST FORWARD
P.C. Board is turned on. When RL106 is mo- When the Fast Forward Button is depressed, cur-
aie! fights ee C101 ca a ae and _ rent flows to RL102 and RL103. At the same time,
an. iscnarge egins. ASC. arge cur- TR105 d TR106 : intai d t “se ” F
rent flows to the base of TR101 and TR102 Chere sp memiained ay, OB enan kat
and they are turned on. When this occurs, RL101 Motor and about 12V to the Supply Motor
ip tured on, and Brake Plunger as well ae Pinch When Fast Forward is effected from Forward Play-
Roller Plunger is turned off. At this time, the back. DR113.is activated and cuts off TR107
capstan motor begins reverse revolutions. (While — When Fast Forward is effected from Reverse Play-
Forward operates. 100V is applied to the Take-up
REID
1
is
“on”,
Recalls
increased
FOPAUE
is
back,
D114
is
activated-and
cuts
off
TR111.
ap
puee
to
the
.capstan
motor,
high
voltage
is
When
Fast
Forward
is
effected
from
Rewind,
TR105
applied.)
remains “on”,
TR106 operates
and
RL103
is
turn-
When discharge of C101 is completed, TR101
and TR102 are turned off. RL101 is also turned
off and voltage is supplied to the Pinch Roller 4. REWIND
Plunger as well as to the Brake Piunger and play- ;
back is effected. When the Rewind Button is depressed, TR105 is
turned on. TR105 is maintained at ‘“‘on” by means
of RL102. 100V is: applied to the Supply Motor
and about 11V to the Take-up Motor.
When Rewind is effected from Forward Playback,
D112 is activated and cuts off TR107.
When Rewind is effected from Reverse Playback,
D108 is activated and cuts off TRi11.
When Rewind is effected from Fast Forward, D104
is activated and cuts off TR10B.
ed on.
24

Akai GX-2800D-SS Specifications

General

Brand	Akai
Model	GX-2800D-SS
Category	Tape Deck
Language	English