Sony HCD-ED2 Service Manual page 31

Pin Name
Pin No.
45 FRECSW
/
RRECSW
46 PLAYSW
/
TAPEIN
47 AMS
48 AREF
49 AGND
50 GND
51 VDD
52 OPEN
53 CLOSE
54 POWER
55 MUTE-A
56 SEG35
57 SEG34
58 SEG33
59 SEG32
60 SEG31
61 SEG30
62 SEG29
63 SEG28
64 SEG27
65 SEG26
66 SEG25
67 SEG24
68 SEG23
69 SEG22
70 SEG21
71 SEG20
72 SEG19
73 SEG18
74 SEG17
75 SEG16
76 SEG15
77 SEG14
78 SEG13
79 SEG12
80 SEG11
81 SEG10
I/O
I Tape forward/reverse record sw input
1.7V (2k4) = frecsw on & rrecsw on
2.25V (3k9) = frecsw on & rrecsw off
2.89V (6k8) = frecsw off & rrecsw on
5V = frecsw off & rrecsw off
I Tape play/tape in sw input
1.7V (2k4) = play sw on & tape in sw on
2.25V (3k9) = Play sw on & tape in sw off
2.89V (6k8) = Play sw off & tape in sw on
5V = play sw off & tape in sw off
I Tape music search input (HI = music)
I A/D convert refrence input (+5v)
I A/D convert Input GND input
I GND
I +5V
O CD loading open motor on
O CD loading close motor on
O System power output
O Audio mute cuntrol output
O
O
O
O
O
O
O
O
O
O
O
O
O LCD segment output
O
O
O
O
O
O
O
O
O
O
O
O
O
Function
31