Technics SJ-HD501

Pin
No.
Mark I/O
Division
Function
1 DACRST O DAC reset signal output
terminal to IC4 (“L”:Reset)
2 DEO O DE emphasis signal output
terminal to IC4(“L”:DE
emphases)
3 MUTE — AD-DA mute output
terminal (Not used, open)
4 AD RST O Reset signal output
terminal
5
NRFSTBY
O Standby control signal
output terminal
(“L”:Standby)
6 PC O Transistor drive signal
output terminal (“H”:Power
ON)
7 MSP
RST
O MSP reset signal output
terminal (“L”:Reset)
8 LOAD1 O Loading motor drive 1
output terminal
9 LOAD0 O Loading motor drive 0
output terminal
10 NEFMON O Magnetic head current
output terminal
11 TEST01 O Test signal output terminal
(Not used, open)
12 TVSW I Traverse innermost
detection switch signal
input terminal
13 DISC IN I Disc detection switch
signal input terminal
14
REFLECT
I Reflection rate switch
signal input terminal
15 LOAD
SW0
(OPEN)
I Loading mechanism
position det. Switch 0
signal input terminal
16 LOAD
SW1
(TRG)
I Loading mechanism
position det. Switch 1
signal input terminal
17 LOAD
SW2
(PLAY/REC)
I Loading mechanism
position det. Switch 2
signal input terminal.
18 LOAD
SW3
(PLAY)
I Loading mechanism
position det. Switch 3
signal input terminal
19
PROTECT
I Erase prevention switch
signal input terminal
20 MMOD — Connected to GND
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