Read Sony TA-P9000ES Service Manual online
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4-9.
IC PIN FUNCTION DESCRIPTION
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CONTROL BOARD IC801 TMP87C846N-4D22 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
C6DBUP
O
Relay drive signal output for the +6 dB gain control (for CENTER input signal)
“H”: +6 dB on
“H”: +6 dB on
2
C12DBUP
O
Relay drive signal output for the +12 dB gain control (for CENTER input signal)
“H”: +12 dB on
“H”: +12 dB on
3
R6DBUP
O
Relay drive signal output for the +6 dB gain control (for REAR input signal) “H”: +6 dB on
4
R12DBUP
O
Relay drive signal output for the +12 dB gain control (for REAR input signal) “H”: +12 dB on
5
MAINRY
O
Relay drive signal output for the power on/off control “L”: standby mode, “H”: power on
6
OUTDRY
O
Relay drive signal output for the INPUT 1 or 2 signal “L”: INPUT 2, “H”: INPUT 1
7
OUTCRY
O
Relay drive signal output for the output protect “L”: protect, “H”: releasing of protect
8
OUTBRY
O
Relay drive signal output for the BYPASS 2ch input signal “H”: BYPASS 2ch on
9
OUTARY
O
Relay drive signal output for the BYPASS 5.1ch input signal “H”: BYPASS 5.1ch on
10
STANDBY LED
O
LED drive signal output of the STANDBY LED (D809) “L”: LED on
11
INPUT-1 LED
O
LED drive signal output of the input 1 LED (D810) “L”: LED on
12
INPUT-2 LED
O
LED drive signal output of the input 2 LED (D811) “L”: LED on
13
BP-5.1CH LED
O
LED drive signal output of the BYPASS 5.1ch input LED (D812) “L”: LED on
14
BP-2CH LED
O
LED drive signal output of the BYPASS 2ch input LED (D813) “L”: LED on
15
MUTE LED
O
LED drive signal output of the MUTING LED (LED on S802) “L”: LED on
16
VOL LED
O
LED drive signal output of the master volume LED (D815) “L”: LED on
17
TEST
I
Test input terminal (fixed at “L”)
18
RESET
I
System reset signal input from the reset signal generator (IC805) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
19
XIN
I
Main system clock input terminal (8 MHz)
20
XOUT
O
Main system clock output terminal (8 MHz)
21
VSS
—
Ground terminal
22
VAREF
I
Reference voltage (+5V) input terminal
23
SW4
I
INPUT SELECTOR switch (S801) input terminal “H”: input 1
24
SW3
I
INPUT SELECTOR switch (S801) input terminal “H”: input 2
25
SW2
I
INPUT SELECTOR switch (S801) input terminal “H”: BYPASS 5.1ch input
26
SW1
I
INPUT SELECTOR switch (S801) input terminal “H”: BYPASS 2ch input
27
MUTE
I
MUTING switch (S802) input terminal “L” is input when key pressing
28
W. GAIN
I
WOOFER LEVEL up switch (S805) input terminal “L” is input when key pressing
29
R. GAIN
I
REAR L/R LEVEL up switch (S804) input terminal “L” is input when key pressing
30
C. GAIN
I
CENTER LEVEL up switch (S803) input terminal “L” is input when key pressing
31
W12DBUP
O
Relay drive signal output for the +12 dB gain control (for WOOFER input signal)
“H”: +12 dB on
“H”: +12 dB on
32
W6DBUP
O
Relay drive signal output for the +6 dB gain control (for WOOFER input signal)
“H”: +6 dB on
“H”: +6 dB on
33
A-1 IN
I
Sircs remote control signal input for the S-LINK control A1
34
A-1 OUT
O
Sircs remote control signal output for the S-LINK control A1
35
—
I
Not used (fixed at “L”)
36
SIRCS
I
Remote control signal input from the remote control receiver (IC804)
37
VOL+
O
Motor drive signal output to the volume motor drive (IC803) (volume up direction)
38
VOL–
O
Motor drive signal output to the volume motor drive (IC803) (volume down direction)
39
STOP IN
I
Trigger input terminal
40
RCL
O
Serial clock signal output to the EEPROM (IC802)
41
RDT
I/O
Two-way data bus with the EEPROM (IC802)
42
VDD
—
Power supply terminal (+5V)
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