Technics SJ-HD501, Руководство по обслуживанию

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Pin
No.
Mark I/O
Division
Function
21 RST I Reset signal input terminal
(“L”:Reset)
22 UNIT
TEST I Test signal input terminal
(Open)
23 CS2 I Test signal input terminal
(Open)
24 SCTSY I Micro computer interrupt
signal input terminal
(SUBQ/ADIP simultaneous
signal)
25 MDISY I Micro computer interrupt
signal input terminal (MD
simultaneous signal)
26 PANEL
REQ
I Panel I/F request signal
input terminal
27
~29
LED
OUT1
~LED
OUT3
O Drive signal output
terminal to LED DRIVE
(“H”:LED ON)
30 TEST02 O Test signal output terminal
(Not used, open)
31
VDD2(3V)
I Power supply terminal
(+3V)
32 OSC1 I Crystal oscillator input
terminal (f=10MHz)
33 OSC2 O Crystal oscillator output
terminal (f=10MHz)
34
VSS
— GND terminal
35 XI I Not used, connected to
GND
36 XO O Not used, open
37 VSS — GND terminal
38 TEST03 O Test signal output terminal
(Not used, open)
39 EEPCS O EEPROM chip select signal
output terminal (Not used,
open)
40 EEPCK O EEPROM clock signal
output terminal (Not used,
open)
41 EEPDATA I/O EEPROM data in/output
terminal (Connected to
GND through resistor)
42 TEST04 O Test signal output terminal
(Not used, open)
43 TEST05
44 CFSYNC I ATRACK management
frame simultaneous signal
input terminal
47