Sony STR-DA80ES Service Manual page 10

4-1. IC Pin Function Description
• DISPLAY BOARD IC105 MB90673PF-G-206-BND
(FLUORESCENT INDICATOR TUBE DRIVE CONTROLLER, KEY CONTROL)
Pin No. Pin Name I/O
1 MBUS (VZ) I
2 MBUS (MON) I
3 MBUS (STU) O
4 LED-V3 O
5 LED-V2 O
6 LED-V1 O
7 STANDBY O
8 DPC (SURR) O
9 DPC (EQ) O
10 DPC (INDEX) O
11 DVSS —
12 LED-CE O
13 LED-DAT/MD O
14 LED-TAPE O
15 LED-TV O
16 LED-LD O
17 LED-V3 O
18 LED-V2 O
19 LED-V1 O
20 RX (SIN) I
21 TX (SOUT) O
22 BUSY I
23 FL CLEAR O
24 FL DATA O
25 FL CLK O
26 LAT (OSD) O
27 SIRCS1 I
28 AVCC —
29 AVR+ I
30 AVR– I
31 GND —
32 AD KEY IN 1 I
33 AD KEY IN 2 I
34 DVSS —
35 AD KEY IN 3 I
36 AD KEY IN 4 I
37 AD KEY IN 5 I
38 AD VERSION I
39 VOL-UP I
40 VOL-DOWN I
SECTION 4
DIAGRAMS
Not used (fixed at "L")
Not used (fixed at "L")
Not used (open)
LED drive signal output terminal "H": LED on (for function VIDEO 3 indicator)
LED drive signal output terminal "H": LED on (for function VIDEO 2 indicator)
LED drive signal output terminal "H": LED on (for function VIDEO 1 indicator)
LED drive signal output terminal "H": LED on (for function STANDBY indicator)
LED drive signal output terminal "H": LED on (for function SUR indicator)
LED drive signal output terminal "H": LED on (for function EQ indicator)
LED drive signal output terminal "H": LED on (for function INDEX indicator)
Ground terminal
LED drive signal output terminal "H": LED on (for function CD indicator)
LED drive signal output terminal "H": LED on (for function DAT/MD indicator)
LED drive signal output terminal "H": LED on (for function TAPE indicator)
LED drive signal output terminal "H": LED on
(for function TV/DBS (STR-DA80ES) or TV (TA-V88ES/VA80ES) indicator)
LED drive signal output terminal "H": LED on (for function LD/DVD indicator)
LED drive signal output terminal "H": LED on (for function VIDEO 3 indicator)
LED drive signal output terminal "H": LED on (for function VIDEO 2 indicator)
LED drive signal output terminal "H": LED on (for function VIDEO 1 indicator)
Receive data input from the on screen display controller Not used (fixed at "L")
Transmit data output to the on screen display controller Not used (open)
Busy signal input from the on screen display controller Not used (fixed at "L")
"Display clear signal output to the fluorescent indicator tube driver (IC101, 102)"
Serial data output to the fluorescent indicator tube driver (IC102)
"Serial data transfer clock signal output to the fluorescent indicator tube driver (IC101, 102)"
"Serial data latch pulse signal output to the fluorescent indicator tube driver (IC101, 102)"
Sircs signal input from the remote control receiver (IC104)
Power supply terminal (+5V)
Reference voltage input terminal (+5V)
Reference voltage input terminal (+0V)
Ground terminal
Key input terminal (A/D input)
S132 to 134 (INPUT MODE, DIRECT PASS, BASS BOOST keys)
Key input terminal (A/D input)
S116 to 119 (FM/AM, SHIFT, PRESET TUNING +/– keys) (STR-DA80ES).
Not used (open) (TA-V88ES/VA80ES)
Ground terminal
Key input terminal (A/D input)
S109 to 114 (STR-DA80ES: EQUALIZER BAND, TUNING +/–, FM MODE, MEMORY,
DISPLAY keys) (TA-V88ES/VA80ES: EQUALIZER BAND, EQUALIZER ON/OFF, SOUND FIELD
STANDARD, SLEEP, DIMMER)
Key input terminal (A/D input)
S101 to 108 (EQUALIZER CH, DPC MODE, cursor ←/↓/↑/→, SET UP, OPEN/CLOSE keys)
Key input terminal (A/D input)
S129 to 131 (MODE, SOUND FIELD ON/OFF, GENRE keys)
Setting terminal for the destination (A/D input)
Motor drive signal input for the master volume
Motor drive signal input for the master volume
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Function