Technics SJ-HD501

Pin
No.
Mark I/O
Division
Function
67 TEST
KEY IN
I Test signal input terminal
(“L”:Unit key mode) (Open)
68 SRV
LOAD
I Test signal input terminal
(“L”:Using for servo
primary values EEPROM)
69 VCC 3V I Power supply terminal
(+3V)
70 VCC 5V I Power supply terminal
(+5V)
71
SELADDA
I AD/DA converter select
signal input terminal (Open)
72 SLOCK O Spindle lock test signal
output terminal (Not used,
open)
73 TLOCK O Tracking lock signal output
terminal (“H”:lock) (Not
used, open)
74 FLOCK O Focus lock test signal
output terminal (“H”:lock)
(Not used, open)
75 ERROR O Servo error test signal
output terminal (Not used,
open)
76 BUSY O Servo busy test signal
output terminal (Not used,
open)
77
SBPRETRY
O Signal management retry
test signal output terminal
(Not used, open)
78
SRVRETRY
O Servo retry test signal
output terminal (Not used,
open)
79
ARDSKIP
O Address skip test signal
output terminal (Not used,
open)
80 SPMWE O SPM take in test signal
output terminal (Not used,
open)
16.5. IC72 (MNV4400-T8T) : 4M DRAM
49