![background image](http://html.mh-extra.com/html/sony/hcd-r500/hcd-r500_service-manual_420833022.webp)
— 66 —
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
I
I
I
—
I
I
I
I
I
I
I
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
—
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Description
Input from CXD2508A SENS
Input from CXD2508A FOK. OK: H, Others: L
Input from CXD2508A COUNT
Ground
Input from CD mechanism pick up switch. Up: L, Others: H
Input from CD mechanism pick down switch. Down: L, Others: H
Input from CD mechanism disc count switch. Count: L, Others: H
Input from CD mechanism turn table switch. ON: L, OFF: H
Input from CD mechanism tray open switch. Open: L, Others: H
Input from CD mechanism tray close switch. Open: L, Others: H
AMS signal input. During program: H, Interval between programs: L
Serial mute (tuner) output (Not used)
Input from destination select mode switch. ON: H, OFF: L
FLD segment signal output P1. ON: H, OFF: L
FLD segment signal output P2. ON: H, OFF: L
FLD segment signal output P3. ON: H, OFF: L
FLD segment signal output P4. ON: H, OFF: L
FLD segment signal output P5. ON: H, OFF: L
FLD segment signal output P6. ON: H, OFF: L
FLD segment signal output P7. ON: H, OFF: L
FLD segment signal output P8. ON: H, OFF: L
FLD segment signal output P9. ON: H, OFF: L
FLD segment signal output P10. ON: H, OFF: L
FLD segment signal output P11. ON: H, OFF: L
FLD segment signal output P12. ON: H, OFF: L
FLD segment signal output P13. ON: H, OFF: L
FLD segment signal output P14. ON: H, OFF: L
FLD segment signal output P15. ON: H, OFF: L
(–) negative power supply
FLD segment signal output P16. ON: H, OFF: L
FLD segment signal output P17. ON: H, OFF: L
FLD segment signal output P18. ON: H, OFF: L
FLD segment signal output P19. ON: H, OFF: L
FLD segment signal output P20. ON: H, OFF: L
FLD segment signal output P21. ON: H, OFF: L
FLD grid signal output 15. ON: H, OFF: L
FLD grid signal output 14. ON: H, OFF: L
FLD grid signal output 13. ON: H, OFF: L
FLD grid signal output 12. ON: H, OFF: L
FLD grid signal output 11. ON: H, OFF: L
FLD grid signal output 10. ON: H, OFF: L
FLD grid signal output 9. ON: H, OFF: L
FLD grid signal output 8. ON: H, OFF: L
FLD grid signal output 7. ON: H, OFF: L
FLD grid signal output 6. ON: H, OFF: L
FLD grid signal output 5. ON: H, OFF: L
FLD grid signal output 4. ON: H, OFF: L
FLD grid signal output 3. ON: H, OFF: L
FLD grid signal output 2. ON: H, OFF: L
FLD grid signal output 1. ON: H, OFF: L
Pin Name
SENS
FOK
COUNT
VSS
PIC UP
PIC DOWN
DISC COUNT SW
TURN TABLE SW
TRAY OPEN SW
TRAY CLOSE SW
VSS
SERI MUTE
(TUNER)
MODE SW IN
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
–V LOAD
P16
P17
P18
P19
P20
P21
G15
G14
G13
G12
G11
G10
G9
G8
G7
G6
G5
G4
G3
G2
G1