Sony HCD-GN1300D Service Manual page 73

54 STBY RELAY
55 STK-MUTE
56 PROTECTOR
57 NO-USE
58 ST-TUNED
59 MTK-KRMOD
60 ST-CE
61 ST-DOUT
62 VCC
63 ST-DIN
64 VSS
65 ST-CLK
66 MTK POWER MONITOR
67 NO-USE
68 OVER VOLTAGE DETECT
69 VACS IN
POWER ILLUM & METER
70
INPUT
71 NO-USE
72 AD POWER CONTROL
73 REC BIAS
74 POWER KEY
75 REC MUTE
76 FAN CONTROL
77 MIC STATUS
VIDEO-OUT-SW
78
79 CAPM-CNT2
80 B-TRIG
81 B-SHUT
B-HALF
82
83 TC-RELAY
84 METER_CTRL4
85 METER_CTRL3
86 METER_CTRL2
87 METER_CTRL1
88 METER SW
89 AD-KEY-1
90 AD-KEY-0
91 AD-KEY-2
92 VIDEO-MUTE
93 DEST-IN
94 OPERATION DIAL
95 MASTER VOLUME
96 Avss
97 STBY LED
98 VREF
99 AVCC
METER BACKGROUND
100
LED
O Main power on/off control signal output. ("H":power on)
O Power amplifi er and sub woofer amplifi er on/off control signal output. ("H": amplifi er on)
I Speaker protect detection signal input from speaker protect circuit. ("H":protector on)
I Unused port (Pull to GND)
I "TUNED" input signal from Tuner pack.
I Karaoke mode detection input.
O PLL chip enable signal output to the TUNER unit.
I PLL serial data output from the tuner unit.
– Power supply terminal. (+3.3V)
O PLL serial data input to the tuner unit
– Ground terminal.
O PLL serial data transfer clock signal output to the tuner unit.
I Micom monitoring the MTK power supply pin.(A/D input)
I Unused port (pull to GND)
I Over-voltage protection detection input terminal.(A/D input)
I Spectrum analyzer drive signal input from Audio IC signal. (A/D input)
I Audio signal level for Meter level and power illum detect (A/D input).
I Unused port (Pull to GND)
O Micom AD pull up supply control
O Recording bias on/off control signal output. ("H": bias on)
I Power key press detection signal. (interrupt input)
O Recording muting on/off control signal output. ("H":muting on)
O Fan on/off control port.
O Mic status output to DVD motherboard.
Composite video output switching output control. ("L": DVD VIDEO output/ "H":
O
VIDEOVIDEO input)
O Capstan motor drive signal output.
O Deck side trigger plunger drive signal output. ("H":plunger on)
I Shut off detection signal input from deck A side reel pulse detector. (A/D input)
Deck B cassette detection, forward side recording tab detection and reverse side recording
I
tab detection signal input terminal. (A/D input)
O Recording/playback selection signal output. ("H":recording "L":playback)
O Meter motor control port
O Meter motor control port
O Meter motor control port
O Meter motor control port
I Meter position switch (Initial & End Position) for calibration purpose.
I Key input terminal for AD key line 1.
I Key input terminal for AD key line 0.
I Key input terminal for AD key line 2.
O Video muting on/off control signal output. ("L": muting on)
I Destination setting terminal. (A/D input)
I Jog dial pulse input from OPERATION DIAL encoder (A/D input)
I Jog dial pulse input from the VOLUME encoder. (A/D input)
I Ground terminal.(for A/D conversion)
O LED drive signal output of POWER indicator.
I A/D Converter reference voltage input terminal.(+3.3V)
– Power supply terminal. (+3.3V) (for A/D conversion)
O LED drive signal output of Meter backlight LED
HCD-GN1300D
73