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output with E80
tor B
nt output when EQ
DATA control
DATA control
STROBO control
'ontrol signal
903 (MN4051).
303 (MN4051).
303 (MN4051).
it with E70.
th E70 only.
Symbol
Function
Output
R42/SO
Communication data output with E70 only.
R43
IC56 (LC40668) control signa! output with E70.
For E80,
H: LED Rec off and L: LED Rec on.
R70
A/D conversion data bit 0 output.
R71
A/D conversion data bit 1 output.
R72
A/D conversion data bit 2 output.
R73
A/D conversion data bit 3 output.
R80
A/D conversion data bit 4 output.
R81
A/D conversion data bit 5 output.
R82
A/D conversion data bit 6 output.
R83
A/D conversion data bit 7 output.
R90
Input of MEMo
key, preset memory
1 ~6
key,
reverse key, and rec/source key.
R91
Input of EQ level down key, EQ plus key, and
spectrum analyzer/EQ key.
R92
+
Input of EQ level up key, flat key, and display mode
key.
i R93
RESET
TEST
_—_+__-
MCU reset.
Input to internal oscillator.
Not used in 1C51. Clock output to 1C51 with IC52
Grounding
1C300/1C400 (LC7522) electronic volume control data
output.
1€300/1C400 (LC7522) electronic volume contro! data
output.
Muting output at power ON/off.
H : Muting off,
L: Muting on.
Muting output to music signal.
H: Mutingon,
L: Muting off.
FL. meter's 63Hz grid output.
FL meter's 160Hz grid output.
FL meter's 400Hz grid output.
}_
FL meter's
1kHz grid output.
FL meter's 2.5kHz grid output.
FL meter's 6.3kHz grid output.
S410 s-
FL meter's 16kHz grid output.
e Microcomputer 1C54 (LC6528C—3189)
Function
L
OSC input.
Grounding.
MCU
reset.
2
3
4
5
6
7
8
9
5V power supply.
Remote control data output.
Remote control data input.
e Electronic volume contro! (1C300 and 1C400) (LC7522)
Remote control data clock output.
Power supply (for audio signal).
2(27)
Audio signal input.
Audio signa! input.
Band filter connections.
For IC test.
Power supply (for audio signal).
Power supply.
Data signal input from microcomputers (IC51, IC52).
Clock signal input from microcomputers (IC51, 1C52).
18
Vss
Grounding.
The pin numbers in parentheses are for the right cahnnel.
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