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AL-E77BK
m@ 1C901
(MB88401M-304K)
Pin Functions
UP/DOWN
PULSE
COUNT
REST
MUTING
Ko
2SA733A
KEY
Ki
SEARCH
flashing
MATRIX
IN
Kz —~>
K3
X'tal
a
=
X'tal
=
no
4
RESET
=
a
I
40 j-<— Tracking end switching
Record size/
39}+— presence detection
Gap between tunes
REST
REPEAT
5Vv
AWW
~s)
Fig. 2
o0o00--0
-
1-4 (No. 2896)
PORT TYPE
COMMENT
Synchro input pin
Synchro output pin
UP signal input pin
H <— UP
DOWN
signal input pin
H — DOWN
PLAY
signal output pin
L «+ PLAY
L signal output pin
Lee
R signal output pin
L«-R
UP/DOWN
signal output pin
L + UP
PULSE COUNT input
LL.
REST signal input pin (approx. 10 msec cycle)
H « REST
MUTING output pin
KEY MATRIX
INPUT
(during
tonearm
movement)
H «— MUTING
ON
(When any
key is
pressed.)
_
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