Sony HTC-V5550 Service Manual page 43

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Pin No. Pin Name
40 BUS
41 BUS XHOLD
42,43 BUS
44 SHIMUKE
45 BUS
46 BUS XWRL
47 LO.BOOST
48 AUDIO MUTE
49 LOAD OUT
50 LOAD IN
51 INSW
52 OUTSW
53 MODEL1
54 MODEL2
55 TBLL
56 TBLR
57 to 59 ENC1 to ENC3
60,61 NCO
62 VCC
63 NCO
64 VSS
TE
L 13942296513
65 VMUTE
66 to 71 A6 to A1
72 UTOI
73 TEST LED
74 TEST1
75 TEST2
76 TEST3
77 DEVICE RESET
78 STANDBY
79 FL CS
80 FLBLK
81 to 88 D7 to D0
89 MIC CTRL
90 to 92 KEY1 to KEY3
93 NT/PAL
94 MUSIC VOL
95 KEY4
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96 AVSS
97 MODE. SW
98 VREF
.
99 AVCC
100 AMP. ON
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I/O
— Not used (open)
I Hold signal input terminal Not used (fixed at "H")
— Not used (open)
I Destination setting terminal "L": Chinese, "H": English
I Vertical synchronized signal input from the MPEG video/audio decoder (IC505) "L" active
— Not used (open)
O Low boost control signal output terminal Not used (open)
O Audio muting on/off control signal output terminal "L": muting on Not used (open)
O Loading motor drive signal output terminal Not used (open)
O Loading motor drive signal output terminal Not used (open)
I Disc detection (load in) switch input terminal Not used (fixed at "H")
I Disc detection (load out) switch input terminal Not used (fixed at "H")
I Destination setting terminal (fixed at "L")
I Destination setting terminal (fixed at "L")
O Table motor drive signal output terminal Not used (open)
O Table motor drive signal output terminal Not used (open)
I Disc tray address detection signal input terminal Not used (open)
— Not used (open)
— Power supply terminal (+5V)
— Not used (open)
— Ground terminal
O Video muting on/off control signal output terminal "L": muting on
O Address signal output for the external device Not used (open)
Former type: UART communication data output to the expansion (IC402)
O
New type: Not used (open)
O LED drive signal output for the self diagnosis indicator (D502) Normally: "L" (LED on)
Setting terminal for the test mode 1 (for VCD check)
I
Normally: fixed at "H" ("L": test mode)
Setting terminal for the test mode 2 (for SERVO check)
I
Normally: fixed at "H" ("L": test mode)
Setting terminal for the test mode 3 Normally: fixed at "H" ("L": test mode)
I
Not used (fixed at "H")
System reset signal output to the CXD2545Q (IC101), BA6392FP (IC102) and D/A converter
O
(IC509) "L": reset
O Standby on/off control signal output terminal Not used (open)
O Chip select signal output terminal Not used (open)
O Blank control signal output terminal Not used (open)
I/O Two-way data bus with the external device Not used (open)
O Mic control signal output terminal Not used
I Key input terminal Not used
Video system select switch (S501) input terminal "L": PAL, "H":
I
NTSC, Center voltage: AUTO
I Volume input terminal Not used
I Key input terminal Not used
— Ground terminal (for A/D conversion)
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I Mode switch input terminal Not used
I Reference voltage (+5V) input terminal (for A/D conversion)
i
— Power supply terminal (+5V) (for A/D conversion)
O Power amplifier on/off selection signal output terminal Not used (open)
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