Sony HCD-ZX9 Service Manual page 69

• IC901 MB90M407PF-G-142-BNDE1 (SYSTEM CONTROL) (PANEL BOARD)
Pin No. Pin Name
1 to 4 G4 to G1
5 to 10 SEG-1 to SEG-6
11 VSS-IO
12 to 22 SEG-7 to SEG-17
23 VDD-FIP
24 to 41 SEG-18 to SEG-35
42 VSS-IO
43 SEG-36
44 TAPE A LED
45 SPK MODE LED
46 CD LED
47 GAME, REC LED
48 VKK
49 MD0
50 MD1/VDD-VFT
51 MD2
52 VOL 1, 2
53 VOL 3, 4
54 VOL 5, 6
55 VOL 7, 8
56 VOL 9, 10
57 VOL 11, TUNER BAND
58 TAPE B LED
59 LED SELECT
60 I2C DAT
61 I2C CLK
62 AVCC
63 AVSS
64 to 69 KEY 0 to KEY 5
70 to 73 BPF1-F01 to BPF3-F04
74 ALL-BAND
I/O
O Grid drive signal output to the fluorescent indicator tube
O Segment drive signal output to the fluorescent indicator tube
— Ground pin (for I/O port)
O Segment drive signal output to the fluorescent indicator tube
— Power supply pin (+3.3 V) (for fluorescent indicator tube)
O Segment drive signal output to the fluorescent indicator tube
— Ground pin (for I/O port)
O Segment drive signal output to the fluorescent indicator tube
Dynamic LED drive signal output of the TAPE A FWD PLAY indicator and TAPE
O
A REV PLAY indicator "H": LED on
O Dynamic LED drive signal output of the X-ROUND indicator "H": LED on
O Dynamic LED drive signal output of the CD PLAY PAUSE indicator "H": LED on
Dynamic LED drive signal output of the GAME indicator and REC PAUSE indicator
O
"H": LED on
— Power supply pin (–33 V) (for fluorescent indicator tube)
I Setting pin for the CPU operational mode
I Setting pin for the CPU operational mode
I Setting pin for the CPU operational mode
Dynamic LED drive signal output of the ILLUMINATION 1st indicator and 2nd
O
indicator "H": LED on
Dynamic LED drive signal output of the ILLUMINATION 3rd indicator and 4th
O
indicator "H": LED on
Dynamic LED drive signal output of the ILLUMINATION 5th indicator and 6th
O
indicator "H": LED on
Dynamic LED drive signal output of the ILLUMINATION 7th indicator and 8th
O
indicator "H": LED on
Dynamic LED drive signal output of the ILLUMINATION 9th indicator and 10th
O
indicator "H": LED on
Dynamic LED drive signal output of the ILLUMINATION 11th indicator and TUNER
O
BAND indicator "H": LED on
Dynamic LED drive signal output of the TAPE B FWD PLAY indicator and TAPE B
O
REV PLAY indicator "H": LED on
Dynamic LED drive select signal output
"L": LED line ILLUMINATION 1, 3, 5, 7, 9, 11, TAPE B REV PLAY, TAPE A REV
O PLAY, X-ROUND, CD PLAY PAUSE and GAME is selected.
"H": LED line ILLUMINATION 2, 4, 6, 8, 10, TUNER/BAND, REC PAUSE/START,
TAPE B FWD PLAY and TAPE A FWD PLAY is selected.
I/O Clock signal for IIC communication between master control IC and display control IC
I/O Data signal for IIC communication between master control IC and display control IC
— Power supply pin (+3.3 V) (for A/D conversion)
— Ground pin (for A/D conversion)
I Key signal input (A/D input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter
I
(A/D input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter
I
(A/D input)
Pin Description
HCD-ZX9
69