Technics SJ-HD501 Servise Manual page 49

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