Sony MDX-C8900R Service Manual page 66

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Pin No. Pin Name
31 TIR-IND
32 LCDINH
33 VSS
34 C
35 AD-ON
36 RE-IN0
37 RE-IN1
38 DVCC
39 DVSS
40 SD-IN
41 LCDANG
42 AVCC
43 AVRH
44 AVRL
45 AVSS
46 KEYIN0
47 KEYIN1
TE
L 13942296513
48 RC-IN0
49 VRSW
50 DSTSEL1
51 DSTSEL2
52 MTP
53
VSM
54 VCC
55 RAMBU
56 POWSEL
57 EQ-SEL
58 TESTIN
59 DOOR-IND
60 TIR-PLAY
61 SUB-SW1
62 SUB-SW0
63 VSS
64 VOLCE
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65 ATT
VOLSO/
66
SUBSO
.
VOLCKO/
67
SUBCKO
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I/O
O
LED drive signal output of the TIR indicator (LED701) "H": LED on
O
Blank indicate control signal output to the liquid crystal display driver (IC900) "L": no display
— Ground terminal
—
Connected to coupling capacitor for the power supply
A/D converter power control signal output When the KEYACK (pin &§) that controls reference
O voltage power for key A/D conversion input is active, "L" is output from this terminal to enable
the input
I
Dial pulse input of the rotary encoder (RE900)
(for VOLUME/BASS/TREBLE/BALANCE/FADER control)
I
— Power supply terminal (+5V) (for D/A converter)
—
Ground terminal (for D/A converter)
Station detector detect input from the FM/AM tuner unit (TU1)
I
Stop level for SEEK, BTM, etc. is determined SD is present at input of "H"
View field angle control signal is output when front panel is fully opened
O
"H": front panel is fully opened
—
Power supply terminal (+5V) (for A/D converter)
I Reference voltage (+5V) input terminal (for A/D converter)
I Reference voltage (0V) input terminal (for A/D converter)
—
Ground terminal (for A/D converter)
Key input terminal (A/D input) (LSW900, S900, LSW901 to LSW908) OFF, SEEK/AMS 0
I
= – + + ), MODE, SOURCE, SOUND, DSPL, SHIFT, 1, 2, 3 keys input
Key input terminal (A/D input) (LSW701, LSW909 to LSW918)
I
6, LIST, AF/TA, TIR, 10, 9, 8, 7, 6, 5, 4 keys input
I Rotary remote commander key input terminal (A/D input)
Power on/off control signal output for the RSC-164 (IC901), flash memory (IC902) and program
O
ROM (IC903) power supply "H": power on
I
Destination setting terminal (fixed at 1/4 voltage)
I Destination setting terminal (fixed at "L")
I Multi-path input from the RDS decoder (IC701)
I FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1) (A/D input)
—
Power supply terminal (+5V)
Internal RAM reset detection signal input from the RN5VD33AA (IC503)
I Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset
I Power select switch (SW500) input terminal "L": on (operation mode), "H": off (halt mode)
I
Not used (fixed at "H")
I Setting terminal for the test mode "L": test mode, Normally: fixed at "H"
LED drive signal output of the illumination LED (LED702, 703) "H": LED on
O
"H" is output to turn on LED when front panel is opened
O AM/TIR selection signal output to the IC704 "L": AM signal, "H": TIR signal
O
Sub woofer output cut-off frequency select signal output terminal
O
Sub woofer output cut-off frequency select signal output terminal
—
Ground terminal
O Chip enable signal output to the main electrical volume (IC400) "H": active
O Audio line muting on/off control signal output terminal "H": muting on
x ao
y
O Serial data output to the main electrical volume (IC400) and sub electrical volume (IC403)
i
Serial data transfer clock signal output to the main electrical volume (IC400) and sub electrical
O
volume (IC403)
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Function
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