Read Sony HCD-GN1200D / MHC-GN1200D Service Manual online
HCD-GN1200D
79
PANEL BOARD IC900 MB90M407PF-G-150E1 (DISPLAY CONTROL, KEY CONTROL)
Pin No.
Pin Name
I/O
Desciption
1 to 8
G16 to G23
O
Grid drive signal output to the fl uorescent indicator tube
9,10
P35,P36
O
Segment drive signal output to the fl uorescent indicator tube
11
VSS-IO
–
Ground terminal (for I/O port)
12 to 22
P34 to P24
O
Segment drive signal output to the fl uorescent indicator tube
23
VDD-FIP
–
Power supply terminal (+3.3V) (for fl uorescent indicator tube)
24 to 41
P23 to P6
O
Segment drive signal output to the fl uorescent indicator tube
42
VSS-IO
–
Ground terminal (for I/O port)
43 to 47
P5 to P1
O
Segment drive signal output to the fl uorescent indicator tube
48
VKK
–
Power supply terminal (+33V) (for fl uorescent indicator tube)
49 to 51
MD0 to MD2
I
Setting terminal for the CPU operational mode
52
LED-VIDEO, MD (TV),
USB (VIDEO)
O
Dynamic LED drive signal output of the VIDEO, MD (TV) and USB (VIDEO) indicator (“H”:
LED on)
LED on)
53
LED-TAPE, TV/SAT
O
Dynamic LED drive signal output of the TAPE and TV/SAT indicator (“H”: LED on)
54
LED-CD/TUNER (DVD)
O
Dynamic LED drive signal output of the CD/DVD and TUNER indicator (“H”: LED on)
55
LED-VOL1,2
O
Dynamic LED drive signal output of the (VOL1) and (VOL2) indicator (“H”: LED on)
56
LED-VOL3,4
O
Dynamic LED drive signal output of the VOL3 1st and VOL4 indicator (“H”: LED on)
57
LED-VOL5,6
O
Dynamic LED drive signal output of the VOL5 3rd and VOL6 indicator (“H”: LED on)
58
LED-FF, FR
O
Dynamic LED drive signal output of the FF and FR indicator (“H”: LED on)
59
LED-USB ACCESS
(DUMMY),
O
Dynamic LED drive signal output of the USB ACCESS and USB (CD, SYNC) (“H”: LED on)
to USB (CD, SYNC)
to USB (CD, SYNC)
60
I2C-DATA
I/O
Clock signal for IIC communcation between Master Control controller and Display Control
controller
controller
61
I2C-CLOCK
I/O
Data signal for IIC communcation between Master Control controller and Display Control
controller
controller
62
AVCC
–
Power supply terminal (+3.3V) (for A/D conversion)
63
AVSS
–
Ground terminal (for A/D conversion)
64 to 66
KEY0 to KEY2
I
Key input terminal (A/D input)
67
ALL-BAND
I
Spectrum analyzer drive signal input from the spectrum analyzer band-pass fi lter (A/D input)
68 to 71
BPF4 to BPF1
I
Spectrum analyzer drive signal input from the spectrum analyzer band-pass fi lter (A/D input)
72
OPERATION DIAL
I
Jog dial pulse input from OPERATION DIAL encoder
73
VOLUME
I
Jog dial pulse input from the VOLUME encoder
74
NO USE
–
Not used (open)
75
LED-STOP, Pause
O
Dynamic LED drive signal output of the STOP and PAUSE indicator (“H”: LED on)
76
LED-to TAPE, REC
O
Dynamic LED drive signal output of the TAPE and REC indicator (“H”: LED on)
77
RESET
I
System reset signal input from the Master Control controller (“L”: reset)
78
LED-AMS +, AMS –
O
Dynamic LED drive signal output of AMS + and AMS – indicator (“H”: LED on)
79
LED - PLAY
O
Dynamic LED drive signal output of PLAY indicator (“H”: LED on)
80
LED Selector
O
Dynamic LED drive select signal output
81
VSS-CPU
–
Ground terminal (for CPU)
82
XO
O
System clock output (4 MHz)
83
XI
I
System clock input (4 MHz)
84
VCC-CPU
–
Power supply terminal (+3.3V) (for CPU)
85 to 100
G1 to 15
O
Grid drive signal output to the fl uorescent indicator tube
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