Sony HCD-GSX75 Service Manual page 50

HCD-GSX75
• IC701 MB90M407APF-G-126-BND Display Controller (DISPLAY Board)
Pin No. Pin Name
1 LED16/PIP16
2 to 6 FIP17 to FIP21
7 to 10 FIP22 to FIP25
11 VSS-IO
12 to 22 FIP26 - 36
23 VDD-FIP
24 to 41 FIP37 - 54
42 VSS-IO
43 to 47 FIP55 - 59
48 VKK
49 to 51 MD0 - 2
52,53 IC0, 1
54 SI0
55 SC0
56 SO0
57 SI1
58 P-V-LED-10
59 SO1
60 SDA(I2C)
61 SCL(I2C)
62 AVCC
63 AVSS
64, 65 PA0, 1
66 PA2
67 PA3
68 PA4
69 PA5
70 PA6
71 PA7
72 to 76 PB0 - 4
77 RSTX
78 PB5
79 PB6
80 PB7
81 VSS-CPU
82 X0
83 X1
84 VCC-CPU
85 LED0/PIP0
86 to 93 LED1 to 8/PIP1 to 8
94 to 100 LED9 -15/PIP9 -15
50
I/O
O Grid drive signal output to the fluorescent indicator tube (FL701)
O Grid drive signal output to the fluorescent indicator tube (FL701)
O Segment drive signal output to the fluorescent indicator tube (FL701)
– Ground
O Segment drive signal output to the fluorescent indicator tube (FL701)
– Power supply
O Segment drive signal output to the fluorescent indicator tube (FL701)
– Ground
O Segment drive signal output to the fluorescent indicator tube (FL701)
– Power supply (-30V) (for fluorescent indicator tube drive)
I Operation mode setting input
– Not used (open)
– Not used (open)
– Not used (open)
– Not used (open)
– Not used (open)
– LED drive signal output
I CD lid open/close detect switch signal input
I/O Communication bus with the system controller (IC801)
I/O Data communication clock input or output with the system controller (IC801)
– Power supply (analog)
– Ground (analog)
– Not used (open)
I Jog dial A signal input from the rotary encoder (RV752)
I Jog dial B signal input from the rotary encoder (RV752)
I Volume A signal input from the rotary encoder (RV751)
I Volume B signal input from the rotary encoder (RV751)
I L-ch level signal input Not used (open)
I R-ch level signal input Not used (open)
I Level signal input
I Reset signal input from the system controller (IC801)
I Key signal input from the function key
I Key signal input from the function key
I Key signal input from the function key
– Ground
I System clock input (4MHz)
O System clock output (4MHz)
– Power supply
O Not used (open)
O LED drive signal output
O Grid drive signal output to the fluorescent indicator tube (FL701)
Description