Sony STR-DE845 Service Manual page 54

• DIGITAL BOARD IC102 MB90553ABPF-G-169-BND (DISPLAY CONTROLLER)
Pin No. Pin Name
1
2
3
4
5
6 VOLUME
7 MUTING
8
9 VOLUP
10 VOLDOWN
11
12 5V CHECK
13 POWER RY
14 to 17
SIRCS IN
18
19
20
21 FL CLK
FL DATA
22
23
24 FL LAT
25 FL CLEAR
26 OSD CLK
27
28 OSD DOUT
29 to 33
34
35
36
37
AD KEY IN 1
38
39 AD KEY IN 2
AD KEY IN 3
40
AD KEY IN 4
41
42
43 AD KEY IN 5
AD KEY IN 6
44
AD KEY IN 7
45
RDS SIGNAL
46
47
48
49
50
51
52
54
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I/O
EQ O
EQUALIZER indicator (D123) drive signal output terminal "L": on
SUR O
SURROUND indicator (D122) drive signal output terminal "L": on
LEVEL O LEVEL indicator (D119) drive signal output terminal "L": on
NAME O
NAME indicator (D151) drive signal output terminal "L": on
SETUP O
SET UP indicator (D152) drive signal output terminal "L": on
O
VOLUME indicator drive signal output terminal "L": on Not used (open)
O MUTING indicator (D101) drive signal output terminal "L": on
JOG O
JOG indicator (D124) drive signal output terminal "L": on
O
Motor drive signal (volume up direction) output to the volume motor drive (IC105)
O Motor drive signal (volume down direction) output to the volume motor drive (IC105)
VSS —
Ground terminal
O
Power check terminal
O
Power relay drive signal output terminal
NC — Not used (fixed at "L")
I
SIRCS input from the remote control receiver (IC101)
SOT0 O
Serial data output to the system controller (IC1201) (rewrite flash memory)
SIN0 I
Serial data input from the system controller (IC1201) (rewrite flash memory)
O Clock signal output to the fluorescent display tube
O
Serial data output to the fluorescent display tube
VCC —
Power supply terminal (+5V)
O Latch signal output to the FL display driver (IC103)
O
Clear signal output to the FL display driver (IC103)
O
OSD clock signal output to the select switch (IC2004) (used for STR-DE945 only)
C —
External power regulator capacitor is connected to this terminal
O OSD serial data output to the select switch (IC2004) (used for STR-DE945 only)
NC —
Not used (fixed at "L")
AVCC —
Power supply terminal (+5V) (analog system)
AVRH —
Connected to power supply
AVRL — Connected to ground
AVSS —
Ground terminal (analog system)
I
Key input terminal (A/D input) (S111 to 118)
I Key input terminal (A/D input) (S121 to 125)
I
Key input terminal (A/D input) (S131 to 137)
I
Key input terminal (A/D input) (S141 to 149)
VSS —
Ground terminal
I Key input terminal (A/D input) (S151 to 157)
I
Key input terminal (A/D input) (S161 to 165)
I
Key input terminal Not used (fixed at "L")
I
RDS control signal input terminal Not used (fixed at "L")
STOP I Stop signal input from the power control (IC1206)
NC —
Not used (fixed at "L")
MD0 I
MD 0 signal input from the system controller (IC1201)
MD1 I MD 1 signal input terminal (fixed at "H" in this set)
MD2 I
MD 2 signal input from the system controller (IC1201)
HSTX I
Hardware standby signal input to the power control (IC1206)
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Description
"H": on