Akai AP-M7

Pin No. | Symbol Description
11 D3 Main Motor Speed 33/45 output,
“L” at 33-1/3 rpm
“H” at 45 rpm
12 EO Speed 33-1/3 rpm
13 El Speed 45 rpm
14 E2 Size 30 cm
15 E3 Size 17 cm lEpiDA LED |i -
‘tput. ts at “L”
16 FO Start rive outpt lights a
17 Fl Repeat
18 F2 Arm Up
19 F3 Arm Down
20 TEST
Connected to ground
21 VSS
5 Go . © Set the timing of the next action after the
2 Arm Up Timer Preset (UPL) output Tone Arm starts to rise.
23
Gl
Arm
Up
Timer
Preset
(UPH)
output
°
pedal
to
ground
to
set
the
timing
to
.9 sec.
24 G2 Forward Key signal input
25 G3 Reverse Key signal input
26 HO Speed Key signal input. .
“L” as each key is depressed.
27 Hl Repeat Key signal input
28 H2 Cue (UP/DOWN) Key signal input
29 H3 Start/Cut Key signal input
30
10
Size
Sensor
17
cm
(SIZE
1)
input
:
.
s
“L” when Size Sensor is ON, otherwise “H”’.
31 I Size Sensor 30 cm (SIZE 2) input
32 12 Open/Close (Dust Cover SW) input,
“L” when SW is open. (DUST COVER is open)
“H” when SW is closed. (DUST COVER is closed)
33 AO Arm Sensor 17 cm (SENS 1)
“H” while the Tone Arm is located between the Lead-in and the Lead-out position for
17 cm record. Otherwise “L”.
34 Al Arm Sensor 30 cm (SENS 2)
“H” while the Tone Arm located between the Lead-in and the Lead-out position for
30cm record. Otherwise “L’”.
35 A2 Arm Rest SW
“H” while Tone Arm is in Rest (Stand-by) position.
“L” while Tone Arm is out.of Rest position.
36 A3 Auto/Manual SW 7
“H” at Auto mode, “L” at Manual mode
37 BO Plunger High Drive Preset, Set the timing while Plunger is driven by the high voltage.
Connected to ground to set the timing to 1.6 seconds.
38 Bl Arm Motor FAST/SLOW.
“” at Fast mode when FWD/REV button is depressed for more than 0.5 sec.
“L” at SLOW mode when FWD/REV button is depressed for less than 0.5 sec.
39
B2
Tracking
Sensor
Preset
(DOWN
L)
Set
the
timing
to
turn
on
the
Tracking
Sensor.
A
F
B2
is
connected
to
+5V,
B3
is
connected
to
ground
40 B3 Tracking Sensor Préset (DOWN H) to set the timing to 1.9 sec.
41 VDD Power Supply Terminal (+ 5V)
42 EX’tal | Crystal OSC input (400 kHz) ~
‘SERVICE MANUAL AP-M7/S: