Download Print this page

Diagrams; 3-1. Ic Pin Function Description - Sony TA-EX660 Service Manual

Integrated stereo amplifier

Advertisement

3-1. IC PIN FUNCTION DESCRIPTION

• PANEL BOARD IC101 MB89193A-157 (SYSTEM CONTROLLER)
Pin No.
Pin Name
1
MIC-IN
2
STANBY
3
K-PON
4
KEY0
5
VSS
6
RST
7
XIN
8
XOUT
9
VSS
10
AUB-OUT
11
AUB-IN
12
SIRCS-IN
13
VOL-UP
14
VOL-DOWN
–20dB MUTE
15
16
DIRECT
17
DBFB LEVEL
18
MUTE
19
KEY1
20
DBFB ON/OFF
21
OPEN
22
VSS
23
VCC
ANALOG/
24
DIGITAL
25
FUNCA
26
FUNCB
27
FUNCC
28
VCC
*1
FUNCA
Terminal
Function
(pin @∞)
TAPE
"H"
VIDEO 2
"L"
VIDEO 1
"H"
MD
"L"
CD
"L"
TUNER
"H"
SECTION 3

DIAGRAMS

I / O
Plug in detection signal input of the MIX MIC jack (J201)
I
Insert the microphone plug with the jack when "H"
O
Power on/off control signal output terminal
O
Control signal output to the KARAOKE PON circuit
I
Key input terminal (A/D input)
Ground terminal
Power on reset signal input from the reset signal generator (IC103)
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I
System clock input terminal (4 MHz)
O
System clock output terminal (4 MHz)
Ground terminal
O
Output terminal of the audio bus signal
I
Input terminal of the audio bus signal
I
Sircs signal input from the remote control receiver (IC102)
Motor control signal output to the volume up/down motor driver IC (IC104)
O
"H": volume up
Motor control signal output to the volume up/down motor driver IC (IC104)
O
"H": volume down
O
Control signal output of the –20 dB mute
O
Control signal output to the SOURCE DIRECT circuit
O
DBFB level select signal output terminal
O
Control signal output of the line mute
Key input terminal (A/D input)
I
–20 dB MUTING, SOURCE DIRECT, KARAOKE PON, DBFB keys (S104 to S107) and rotary
encoder (S110) for the FUNCTION
O
Control signal output to the DBFB circuit
Not used (open)
Ground terminal
Power supply terminal (+5V)
Digital/analog recording mode select input (ANALOG/DIGITAL select switch (S901) input) of
I
the AUX/VIDEO 2 IN terminal
(TA-EX77 only)
O
O
Function select signal output terminal
O
Power supply terminal (+5V)
FUNCB
FUNCC
(pin @§)
(pin @¶)
"H"
"H"
"H"
"H"
"L"
"H"
"L"
"H"
"H"
"L"
"L"
"L"
Function
"H": power on, "L": standby mode
POWER key (S101) input
"H": –20 dB mute on
"H" : DBFB LOW, "L": DBFB HIGH
"H": line mute on
"H": DBFB off, "L": DBFB on
"H": analog recording mode, "L": digital recording mode
*1
– 9 –
"H": KARAOKE PON on
"L": reset
"H": SOURCE DIRECT on

Advertisement

loading

This manual is also suitable for:

Ta-ex770