Sony HCD-MD5, Service Manual, Page: 68 / 101

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42 ENCORDE2 I Disc tray address detect encoder input 2
43 AFADJ I Not used (Fixed at “H”).
44 TBL-SENSE I Table address detect sensor input
45 DSC-SENSE I Disc present/absent sensor input.
46 OUTSW I Disc tray open completion input.
47 PWMSW I Not used (Connected to ground).
48 TBL-L O
49 TBL-R O
Table rotation output
50 LD IN O
51 LD OUT O
Disc tray loading signal output
52 — I
53 — I
54 — I
55 — I
Not used (Connected to ground).
56 — I
57 — I
58 — I
59 — I
60 RESET I System reset input
61 BUSCLK I
62 BUSCLK I/O
Y-BUS clock
63 BUSBSY I/O Y-BUS busy
64 SCOR I Subcode sync S0, S1 detect input
65 — I
Not used (Connected to ground)
66 — I
67 — I Not used (Connected to ground).
68 VDD — Power supply (+5V)
69 OSCO —
70 OSCI I
Main system clock oscillation crystal connection (5 MHz)
71 IC — Directly connected to VSS.
72 — — Not used (Open).
73 ADJ I Test mode input.
74 AVDD — A/D converter analog power supply. Connected to VDD.
75 AVREF0 I Reference voltage input of the A/D converter
76 KEY0 I 3.3k pull-up (Key data A/D input 0)
77 KEY1 I 3.3k pull-up (Key data A/D input 1)
78 KEY2 I 3.3k pull-up (Key data A/D input 2)
79 KEY3 I 3.3k pull-up (Key data A/D input 3)
80 BDPWR O BD power supply ON/OFF output
Pin No. Pin Name I/O Function
Absent
Present
Open completion
NOT
NOT NOT
S0, S1
ADJ mode
NORMAL
ON
OFF