Akai GX-2800D-SS

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286945( Q@.R.)
Fig. 33 4-CHANNEL REPEAT CIRCUIT
Forward Play
Repeat
(sensing tape passed reverse
sensing pole)
Stop the Forward Play
(sensing tape passed forward
sensing pole)
Fanos Pre t07 [RT [Ra [RG | TRe TRS | TRO | TR
OFF OFF | ON | OFF | ON | OFF
OFF | ON | OFF
ON
Saeeeedee
Chart 2
5. 4-CHANNEL REPEAT CIRCUIT
(See Figs. 33 and Chart 2)
When the Stereo Selector is set to 4-channel posi-
. tion, Syscon Board and are opened. When
during Forward Playback, the sensing tape passes
the reverse sensing pole, TR6 is turned off and TR7
is turned on. At this time, TR4 is “on” and TRS
is turned off. Further, because TR8 is “‘off’ and
TRY “on”, is grounded and at the same time,
TR107 is turned off. TR105 is turned on and because
it passes RL102 is held at “on”. Consequently,
Rewind mode is attained and the tape begins to
rewind,
When the sensing tape passes the Forward sensing
pole, D1 is grounded, TR1 is turned on, TR2 is
turned off, and TR3 is turned on. Thus, TR4 which —
has been on up to now is turned off and TRS is
turned from off to on. Because TRS is on, the unit
Operates in the same was as if the Forward Button
had been depressed (TR107 is turned on, and TR105
is turned off. Consequently, Forward Play com-
mences.). Because sensing tape is affixed at both
ends, repeat mode is continuous (Play-Rewind-Play).
Rewind and Stop can be effected by depressing the
Rewind Button during Repeat Mode. When the Re-
wind Button is depressed, TR6 is turned on and
TR7 is turned off. For this reason, TR4 is maintained
at “on”. Although Pin D1 is grounded, and TR1 is
turned on, TR2 off, and TR3 on, because TR4 is
held at “on”, and TRS is turned off, the machine
will not enter Forward Play.
25