Akai GX-F51

3. INPUT OUTPUT MODES OF EACH TERMINAL OF AUTO TUNING CPU (M58841-600P)
PIN
NAME
FUNCTION
NO.
TEST SIGNAL
OSC
1 FRQI
CD
L L H
2 FRQ II FREQUENCY CONTROL
®
L
H H
osc
1 kHz 7 kHz 13 kHz
42 OSC START L: OSC ON H: OSC OFF
®
L
H
L
H L H
35
MECHACON I
@ L L H
H
L L
36 MECHACON II
@
L
L
L
L
H
H
3
MECHACON III
NON
STOP
FF REW
REC/PLAY REC/PAUSE
OPERATION
®
H H
L
12
TAPE POSITION I
:j)
H
L
L
7
TAPE POSITION II
POSITION NORMAL Cr0
2
METAL
8
TEST START KEY Started by "L" input
11 MEMORY KEY
Memory
output by "L" input
15
REFERENCE KEY Reference output by "L" input
t'"-T"'"j
10
COUNTER PULSE
lJlf "T" means one full counts
16
TIMER
With "L" input, Tuning REC is feasible but with "H'', it is not feasible.
17
TUNING SAFE
With
"H" input, tuning is feasible, but with "L" input, tuning is not feasible.
If the "H" input enters during tuning, the tuning stops.
18
PB DETECT Judged by the trailing edge
25 DATA I (Ai)
32
DATA II (A2)
30
DATA III (A3)
"H" output is used as data output
28
DATA IV (A4)
26
DATA V
(As)
27
IND OUT The "H" synchronized with one of Data II
Vis output to light the tuning indicator.
29
Leh/Reh CHANGE
"H" output ➔ Leh. "L" output ➔ Reh.
41
TUNING TEST While testing ➔ "H" output. While test is off ➔ "L".
Latch of HA 12020 is selected
37
LATCH SELECT I
®
L H
L H
38
LATCH SELECT II
®
L L H
H
DATA 1 kHz Data
7
kHz Data 13 kHz Data
Bias,
I
A/D Data
39
Leh WRITE
Jl
Output pulse. Latch data at the edge of rise.
40 Reh WRITE
31
HOLD RESET
When
"H" output is being made, reset is OK. It is "H" while test is off.
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