Sony HCD-GT22 Service Manual page 67

Pin No. Pin Name
45
O-AUDIO-CLK
46
O-REC/PB
47 AVREF1
48
O-REC-MUTE
49
O-BIAS
50
AVREF0
51 AVSS
52
I-USB-MONI
53
I-SUFIX
54
I-MODEL
55 I-ENCD
56 I-KEY4
57
I-PROTECTOR
58
I-HP/MIC
59 I-VACS
60 I-TAPE-STAT
61 to 64
I-KEY0 to I-KEY3
65 I-JOG
66 I-VOL
67
I-STREAM
O-NJM3427FA2
68
-CS
O-NJM3427FA2
69
-RESET
O-S-LED1 to
70 to 75
O-S-LED6
76
O-SWR-LED
77 O-STBY-LED
78 I-REEL-A
79 I-REEL-B
80
I-RDS-CLK
81 I-SIRCS-IN
82
NC
83
I-WAKEUPKEY
O-NJM3427A-
84
DATA
85
O-MOTOR
O-NJM3427A2-
86
CLK
87
O-B-SOL
88
O-A-SOL
89
TOOL0
90
RESET
I/O
Serial data transfer clock signal output to the electrical volume and parametric equalizer (GT55)
O
Serial data transfer clock signal output to the electrical volume (GT22/GT44)
Deck-A/B selection and recording/playback selection signal output terminal
O
"L": deck-B and playback, "H": deck-A and recording
I Reference voltage (+3.3V) input terminal
O Recording muting on/off control signal output terminal "L": muting on
O Recording bias on/off control signal output terminal "H": bias on
I Reference voltage (+3.3V) input terminal
- Ground terminal
I USB power (VBUS) monitoring input terminal
I Setting terminal for the destination
I Setting terminal for model discrimination
I Disc table address sensor (rotary encoder) input terminal (A/D input)
I Front panel key input terminal (A/D input) (GT55)
I AC power detection signal input, and protect signal input terminal
I Headphone and microphone plug insert detection signal input terminal (A/D input)
I VACS signal input terminal (A/D input)
Deck-A/B cassette detection signal input from the tape mechanism deck block, and Recording-
I
proof detection signal input from the tape mechanism deck block (A/D input)
I Front panel key input terminal (A/D input)
I
Jog dial pulse input from the rotary encoder (multi jog) (A/D input)
I
Jog dial pulse input from the rotary encoder (VOLUME) (A/D input)
I Audio signal input for stream LED (A/D input)
O Chip select signal output to the fluorescent indicator tube driver
O System reset signal output to the fluorescent indicator tube driver "L": reset
O LED drive signal output of the stream indicator "H": LED on
O LED drive signal output of the SUBWOOFER indicator "H": LED on (GT44/GT55)
O LED drive signal output terminal for STANDBY indicator "H": LED on
I Deck-A tape reel rotating detection signal input from the tape mechanism deck block
I Deck-B tape reel rotating detection signal input from the tape mechanism deck block
I RDS data transfer clock signal input terminal Not used
I SIRCS signal input from the remote control receiver
- Not used
I Wake up signal input terminal
O Serial data output to the fluorescent indicator tube driver
O Capstan/reel motor drive signal output terminal "H": motor on
O Serial data transfer clock signal output to the fluorescent indicator tube driver
O Deck-B side trigger plunger drive signal output terminal "H": plunger on
O Deck-A side trigger plunger drive signal output terminal "H": plunger on
I Not used
System reset signal input from the reset signal generator "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
HCD-GT22/GT44/GT55
Description
67