Sony HCD-H551 Service Manual page 39

Pin Name
Pin No.
41 AUB IN
42 AUB OUT
43
FOCUS SW
44 SQ-CLK
45
SQ-DATA
46 X-LAT
47 TEST
48 VAREF
49
VA
SS
50 V
SS
51
V
DD
52 SPEC
53
DESTINATION
54 DISC SENS
55
TC RELAY
56 A-SHUT
57
B-SHUT
58 B-HALF
59
A-HALF
60 220-A-PLAY
61
220-B-PLAY
62 62427 LAT
63
K-CON-LAT
64 VOL LAT (AV)
65
REAR SP RELAY B
66 FRONT SP RELAY C
67
POWER ON
68 CD POWER
69
PROLOG LAT
70 MUTE
71
COM CLK
72 COM DIN
73
COM DATA
74 K CON ON
75
LIDDED LED
76 PROLOG ON
77 DBFB-HIGH
78 URG STB STDBY
79
URG STB ON
80 TC A
I/O
I
Audio bus in/output. (Not used) (Open)
O
O
Focus switching signal output.
O
Subcode Q data read clock output.
I
Subcode Q data input.
O
Latch signal digital signal processor.
I
Test land.
I
Analog reference voltage input.
–
Ground
–
+5V
–
I
Destination detection setting input.
I
I
Not used. (Connected to ground)
O REC/PB select signal output.
I
I
I
Control signal input from deck.
I
I
I
PLL latch output.
O
Not used. (Open)
O
Latch signal for electrical volume. (Not used) (Open)
O
O
Not used. (Open)
O
Power on signal output.
O
CD power control signal output.
O
Not used. (Open)
O
Mute signal for AMP.
O
PLL clock output.
O
PLL data input.
I
PLL data output.
O
Not used. (Open)
O
Disc No. LED drive signal output. (Not used) (Open)
O
PRO LOGIC control output. (Not used) (Open)
O
O DBFB switching signal output.
Not used. (Pull-down)
I
Not used (Open)
O
Deck A, B select output.
O
— 69 —
Function