Sony HCD-W550 Service Manual page 16

Pin No. Pin Name
51 LED 17
52 LED 16
53 LED 15
54 IIC-TEMP
55 IIC DATA
56 IIC CLK
57 XRST
58 XLAT
59 FOCUS SW
60 TBL L
61 TBL R
62 TRAY LED
63 LOAD OUT
64 LOAD IN
65 LED 14
66 LED 13
67 LED 12
68 LED 11
69 LED 10
70 LED 9
71 Vss
72 LED 8
73 LED 7
74 SENS
75 DISC SENS
76 T-SENS
77 UPSW
78 ENC3
79 ENC2
80 ENC1
81 OUT OPEN
82 CAP M H/N
83 A TRG
84 B TRG
85 TRG LOW
86 CAP M ON/OFF
87 PB A/B
88 EQ H/N
89 BIAS
90 REC MUTE
91 NR ON/OFF
92 R/P PASS
93 LM-ON/OFF
94 A PLAY SW
95 B PLAY SW
96 TC RELAY
97 A HALF
98 POWER
99 NC
100 NC
I/O
O LED control.
O LED control.
O LED control.
— Not used.
I/O Communciation data.
I/O Comunicaton clock.
O CD reset.
O CD latch.
O Focus switch.
O Table-L.
O Table-R.
— Not used.
O Load out.
I Load in.
O LED control.
O LED control.
O LED control.
O LED control.
O LED control.
O LED control.
— Ground.
O LED control.
O LED control.
I BD status input.
I Disc sensor.
I Table sensor.
— Not used.
I Encoder input for CDM38.
I Encoder input for CDM38.
I Encoder input for CDM38.
I Encoder input for CDM38.
O Capstan motor H/N selection.
O Mechanism timing output control.
O Mechanism timing output control.
O Mechanism timing output control.
O Capstan motor ON/OFF switch.
O Playback A/B selection.
O Equalizer H/L selection.
O Bias ON/OFF.
O REC mute.
O NR ON/OFF.
I/O REC/PB/PASS select.
O TC mute.
I Mechanism PLAY switch.
I Mechanism PLAY switch.
O Head selection.
I Cassette half detection.
— Not used.
— Not used.
— Not used.
— 41 —
Description