Function Of At600 Terminals - Akai AT-S61 Service Manual

Fm am quartz synthesizer tuner / dc stereo integrated amplifier
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2. FUNCTION OF AT600 TERMINALS
No.
Terminal Description
Function
H = Muting OFF
:
NOUNS
L = Muting ON
H = FM
2
iM
L = MW(AM) or LW
H = MW(AM)
;
MY
L = FMorLW
H = LW
:
chad
L = FMorMW
5
LED DATA
Light up the LED of MANUAL, AUTO, RANDOM
(1) EXCEPT JAPAN
K1 SIGNAL becomes ''H"' when MONO KEY is depressed, and K1
SIGNAL becomes "L" when AUTO KEY is depressed.
ne
K2 SIGNAL is always '"*L'"'.
(2) JAPAN MODEL
K1 SIGNAL is reversed every time MODE KEY is depressed ("'H"' at
MONO), and K2 SIGNAL is reversed every time CAL TONE KEY is
depressed (""H" when CAL TONE is ON).
7
K2 SIGNAL
When K2 SIGNAL is "'H'', CAL is displayed on FREQUENCY DIS-
PLAY, and all tuning modes are released.
Therefore, any input other
than the inputs by CAL TONE KEY and MODE KEY are not mode.
'9
a
10
b
a
11
c
f
b
12
d
(ay
Frequency Display Segment Data
13
e
of q
14
f
d
15
g
16
8
T6
17
TS
TIMING CONTROL
18
T4
Display Digit Select
19
T3
| Key Matrix
20
T2
Led Select
22
Tl
21
GND
23
KI
24
K2
KEY Input
25
K3
Input... ACTIVE LOW
26
K4
a
vee
Connect a OSC Coil.
29
CK
CAL TONE Signal Japan Model only)
30
TEST
31
RESET
ACTIVE LOW - Reset
32
INT
Interrupt Signal
33
POF
Power OFF manage.
34
PLL LOAD
PLL Load Signal
35
KD
Lock SW input. (Refer to KEY Matrix)
36
NC
37
AUTO STOP
L = AUTOSTOP
38
D
39
Cc
PLL Frequency Data
40
B
41
A
42
VDD
Power terminal +5V
10

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