Technics SJ-HD501 Servise Manual page 47

Pin Mark I/O
No. Division
21 RST I
22 UNIT I
TEST
23 CS2 I
24 SCTSY I
25 MDISY I
26 PANEL I
REQ
27 LED O
OUT1
~29
~LED
OUT3
30 TEST02 O
31 V DD 2(3V) I
32 OSC1 I
33 OSC2 O
34 —
V SS
35 XI I
36 XO O
37 VSS —
38 TEST03 O
39 EEPCS O
40 EEPCK O
41 EEPDATA I/O
42 TEST04 O
43 TEST05
44 CFSYNC I
Function
Reset signal input terminal
("L":Reset)
Test signal input terminal
(Open)
Test signal input terminal
(Open)
Micro computer interrupt
signal input terminal
(SUBQ/ADIP simultaneous
signal)
Micro computer interrupt
signal input terminal (MD
simultaneous signal)
Panel I/F request signal
input terminal
Drive signal output
terminal to LED DRIVE
("H":LED ON)
Test signal output terminal
(Not used, open)
Power supply terminal
(+3V)
Crystal oscillator input
terminal (f=10MHz)
Crystal oscillator output
terminal (f=10MHz)
GND terminal
Not used, connected to
GND
Not used, open
GND terminal
Test signal output terminal
(Not used, open)
EEPROM chip select signal
output terminal (Not used,
open)
EEPROM clock signal
output terminal (Not used,
open)
EEPROM data in/output
terminal (Connected to
GND through resistor)
Test signal output terminal
(Not used, open)
ATRACK management
frame simultaneous signal
input terminal
47