Read Sony STR-DE135 Service Manual online
– 27 –
Pin No.
Pin Name
I/O
Description
44
SYS-POWER
I
Power on/off switch (S240 I/
u) input terminal “L” is input when key pressing
45
TUNER MUTE
O
Muting control signal output to the FM/AM tuner pack “H”: muting on
46
RDS CLK IN
I
RDS serial clock signal input from the RDS decoder (IC1)
(Used for the AEP and UK models only)
(Used for the AEP and UK models only)
47
STOP
I
Power down detection signal input from the reset signal generator (IC950)
“L”: power down, normally: “H”
“L”: power down, normally: “H”
48
VSS
—
Ground terminal
49
SIRCS
I
Sircs remote control signal input from the remote control receiver (IC203)
50
MUTING LED
O
LED drive signal output of the MUTING indicator (D211) “L”: LED on
51
5.1 LED
O
LED drive signal output terminal “L”: LED on Not used (open)
52
VDD
—
Power supply terminal (+5V)
53
LOW BOOST
O
Control signal output of the BASS BOOST circuit and LED drive signal output of the BASS
BOOST indicator (D212) “H”: BASS BOOST on (LED on)
BOOST indicator (D212) “H”: BASS BOOST on (LED on)
54
FUNC. MUTE
O
Audio line muting on/off control signal output terminal “H”: muting on
55
IC. MUTE
O
Muting on/off control signal output terminal “H”: muting on Not used (open)
56
VERSION
I
Setting terminal for the version
57, 58
S2, S1
O
Not used (open)
59 to 61
LED1 to LED3
O
LED drive signal output terminal “H”: LED on Not used (open)
62 to 70
S15 to S7
O
Segment drive signal output to the fluorescent indicator tube (FL201)
71
VLOAD
—
Negative power supply terminal for the fluorescent indicator tube drive (–24V)
72 to 77
S6 to S1
O
Segment drive signal output to the fluorescent indicator tube (FL201)
78 to 80
DIG10 to DIG8
O
Digit drive signal output to the fluorescent indicator tube (FL201)
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