Sony HCD-MD515 - Component For Dhcmd515, Руководство по обслуживанию, Страница: 61 / 110

– 97 –
Pin No. Pin Name I/O Function
49 LDON O Laser diode ON signal output terminal “H”:laser diode ON
50 MOD O
51 LDIN O Loading-in signal output terminal Not used (open)
52 LDOUT O Loading-out signal output terminal Not used (open)
53 LD-LOW O Loading motor voltage control signal output to the loading motor driver Not used (open)
54 PROTECT I PROTECT switch (S683) detect signal input terminal “H”: protect
55 REFLECT I
REFLECT switch (S682) detect signal input terminal “L”: high reflection rate disc, “H”: low reflec-
tion rate disc
56 PACK-IN I MD PACK IN switch detect signal input terminal Not used (fixed at “H”)
57 PACK-OUT I PACK OUT switch detect signal input terminal Not used (fixed at “H”)
58 CHUCK-IN I CHUCKING IN switch detect signal input terminal Not used (fixed at “H”)
59 LIMIT-IN I LIMIT-IN switch (S681) detect signal input terminal The optical pick-up is inner position when “L”
60 REC. P I REC POSITION switch detect signal input terminal Not used (fixed at “H”)
61 PB. P I PB POSITION switch detect signal input terminal Not used (fixed at “L”)
62 +3.3V — Power supply terminal (+3.3V)
63 — Not used (fixed at “L”)
64 GND — Ground terminal
65 to 72 — Not used (fixed at “L”)
73 HEAD SW UP I Over write head up switch (S6) detect signal input terminal “L”:active
74 HEAD SW DOWN I Over write head down switch (S7) detect signal input terminal “L”:active
75 HEAD UP O Over write head UP/DOWN motor (M905) control signal output terminal *1
76 HEAD DOWN O Over write head UP/DOWN motor (M905) control signal output terminal *1
77, 78 — Not used (fixed at “L”)
79 SDA I/O Two-way data bus for the EEPROM (IC171)
80 SCL O Clock signal output to the EEPROM (IC171)
81 I Not used (fixed at “L”)
82 I Not used (fixed at “H”)
83 MODE I
Input terminal for setting MD single or changer mode “L”:single mode, “H”:changer mode (fixed
at “H” in this set)
84, 85 I Not used (fixed at “L”)
86 REC/PB O REC/PB status control signal output terminal Not used (pull down)
87 DOUTXMUTE O Mute control signal output terminal Not used (pull down)
88 to 90 I Not used (fixed at “L”)
91 KEY0 — Key signal input terminal Not used (fixed at “H”)
92 KEY1 — Key signal input terminal Not used (fixed at “H”)
93 KEY2 — Key signal input terminal Not used (fixed at “H”)
94, 95 I Not used (fixed at “L”)
96 AVSS — Ground terminal
97 I Not used (fixed at “L”)
Laser modulation select signal output
Playback power: “L”, Stop: “H”,
Recording power:
0.5 sec
2 sec