Sony STR-DE725 Service Manual page 37

IC102 MB90553PF-G-131-BND (DISPLAY BOARD)
Pin No. Pin Name I/O
1 LED V1
2 LED V2
3 LED V3
LED-DVD/LD
4
5 LED-TV/DBS
6 LED-TAPE
7 LED-MD/DAT
8 LED-CD
9 LED-TUNER
10 LED-PHONO
VSS
11
12 —
13 —
14 LED SUR
15 LED EQ
16 LED INDEX
17 —
18 —
19 SOT0
20 SIN0
21 FL CLK
FL DATA
22
23 VCC
24 FL LAT
25 FL CLEAR
26 SIRCS IN
27 C
28 —
29 —
—
30
31 —
32 —
33 —
34 AVCC
35 AVRH
36 AVRL
37 AVSS
38 AD KEY IN 1
39 AD KEY IN 2
40 AD KEY IN 3
AD KEY IN 4
41
42 VSS
43 AD KEY IN 5
44 AD KEY IN 6
45 AD VERSION
46 AD MODEL
47 STOP
—
48
49 MD 0
50 MD 1
O VIDEO 1 VISUAL display data output to LED
O VIDEO 2 AUDIO display data output to LED
O VIDEO 3 VISUAL display data output to LED
O DVD/LD AUDIO display data output to LED
O DVD/LD VISUAL display data output to LED
O TV/DBS AUDIO display data output to LED
O TV/DBS VISUAL display data output to LED
O TAPE display data output to LED
O MD/DAT display data output to LED
O CD display data output to LED
— Ground (Connected to Ground)
— Not used. (Connected to Ground)
— Not used. (Connected to Ground)
O CURSOR MODE SURROUND display data output to LED
O CURSOR MODE EQUIPMENT display data output to LED
O CURSOR MODE INDEX display data output to LED
— Not used. (Connected to Ground)
— Not used. (Connected to Ground)
O UART data output to rewrite flash memory
I UART data intput to rewrite flash memory
O Clock output to flourescent display tube
O Data output to flourescent display tube
— Power supply +5 V
O Fluorescent latch
O Fluorescent clear
I SIRCS input
— External power regulator capacitor 0.1µ is connected to this terminal.
— Not used (Connected to Ground)
— Not used (Connected to Ground)
— Not used (Connected to Ground)
— Not used (Connected to Ground)
— Not used (Connected to Ground)
— Not used (Connected to Ground)
— Analog power supply +5 V
— AVRH (Connected to power supply +5 V)
— SVRL (Connected to Ground)
— Ground (Connected to Ground)
I Key input 1
I Key input 2
I Key input 3
I Key input 4
— Ground (Connected to Ground)
I Key input 5
I Key input 6
I Version input
I Model input
I Stop input
— Not used (Connected to Ground)
I MD 0 (To MD0 of MB90574)
I MD 1 (Connected to power supply +5 V)
Description
— 59 —