Sony MHC-NX1 Service Manual - Page 26

Pin No., Pin Name, Description, m - specs

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Pin No. Pin Name I/O Description 87 LED 5.1CH O LED drive signal output of the DVD 5.1CH indicator (D632) "H": LED on (Used for the STR-NX3 only) 88 LED GROOVE O LED drive signal output of the GROOVE indicator (D631) "H": LED on 89 BPF 1 I Spectrum analyzer drive (low frequency) signal input from the spectrum analyzer band-pass filter (IC401) (for 100 Hz) 90 BPF 2 I Spectrum analyzer drive (low and middle frequency) signal input from the spectrum analyzer band-pass filter (IC401) (for 400 Hz) 91 BPF 3 I Spectrum analyzer drive (middle and high frequency) signal input from the spectrum analyzer band-pass filter (IC401) (for 2 kHz) 92 BPF 4 I Spectrum analyzer drive (high frequency) signal input from the spectrum analyzer band-pass filter (IC401) (for 6 kHz) Key input terminal (A/D input) 93 KEY1 I S615 to S617, S619 to S624 (TUNER BAND, STEREO/MONO, TUNER MEMORY, GROOVE, + M, - m, ENTER, DVD 5.1CH, PRO LOGIC) keys input (S623 DVD 5.1CH, S624 PRO LOGIC keys: used for the STR-NX3 only) Key input terminal (A/D input) 94 KEY0 I S601 to S614 (I/1, DISPLAY, POWER SAVE/DEMO (STANDBY), VIDEO/DVD, MD, TAPE, CD, TUNER, DSB, DBFB, PLAY MODE, REPEAT, EDIT, FILE SELECT) keys input 95 MODEL-IN I Destination setting terminal 96 AVSS - Ground terminal (for A/D conversion) 97 SPEC-IN I Setting terminal for the version 98 VREF I Reference voltage (+5V) input terminal (for A/D conversion) 99 AVCC - Power supply terminal (+5V) (for A/D conversion) 100 POWER O Power on/off control signal output terminal "L": standby mode, "H": power on 25

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25
Pin No.
Pin Name
I/O
Description
87
LED 5.1CH
O
LED drive signal output of the DVD 5.1CH indicator (D632)
“H”: LED on
(Used for the STR-NX3 only)
88
LED GROOVE
O
LED drive signal output of the GROOVE indicator (D631)
“H”: LED on
89
BPF 1
I
Spectrum analyzer drive (low frequency) signal input from the spectrum analyzer band-pass filter
(IC401) (for 100 Hz)
90
BPF 2
I
Spectrum analyzer drive (low and middle frequency) signal input from the spectrum analyzer
band-pass filter (IC401) (for 400 Hz)
91
BPF 3
I
Spectrum analyzer drive (middle and high frequency) signal input from the spectrum analyzer
band-pass filter (IC401) (for 2 kHz)
92
BPF 4
I
Spectrum analyzer drive (high frequency) signal input from the spectrum analyzer band-pass filter
(IC401) (for 6 kHz)
93
KEY1
I
Key input terminal (A/D input)
S615 to S617, S619 to S624
(TUNER BAND, STEREO/MONO, TUNER MEMORY,
GROOVE, +
M
, –
m
, ENTER, DVD 5.1CH, PRO LOGIC) keys input
(S623 DVD 5.1CH, S624 PRO LOGIC keys: used for the STR-NX3 only)
94
KEY0
I
Key input terminal (A/D input)
S601 to S614 (I/
1
, DISPLAY, POWER SAVE/DEMO (STANDBY), VIDEO/DVD, MD, TAPE,
CD, TUNER, DSB, DBFB, PLAY MODE, REPEAT, EDIT, FILE SELECT) keys input
95
MODEL-IN
I
Destination setting terminal
96
AVSS
—
Ground terminal (for A/D conversion)
97
SPEC-IN
I
Setting terminal for the version
98
VREF
I
Reference voltage (+5V) input terminal (for A/D conversion)
99
AVCC
—
Power supply terminal (+5V) (for A/D conversion)
100
POWER
O
Power on/off control signal output terminal
“L”: standby mode, “H”: power on