Pioneer SX-2300 Service Manual page 19

10. iC INFORMATION
PDG013 (MICROCOMPUTER)
Terminal Terminal
Condition
No. name
1 ——e
2 WAKE UP
POWER ON
SxX-2300/KUC
NOT USED
This terminal outputs "CLOCK" for control signals directed to
1C201(TC9164N) and IC103(LM7001P).
This terminal outputs "DATA" for control signals directed to
1C201(TC9164N) and IC103(LM7001P).
When the terminal voltage remains low for more than 60 ns,
H this terminal enters the backup mode. : .
When the terminal voltage becomes high, this terminal returns
to its original mode.
L (When this terminal is low, it does not receive key input.)
L
When the output of IC102(AN7470P) pin 9 in the tuner unit is
low, this terminal causes the FL display stereo indicator to go
on.
When the output of IC101(LA1265S) pin 8 in the tuner unit is
low,this terminal causes the FL display tuner indicator to go
on.
fj
3 REMOTE IN| I | Set to L.
4 CLOCK 10)
5 DATA ce)
TUNER
6 STEREO I | INPUT PORT
TUNER
7 STOP I | INPUT PORT
8 KEY |
| MATRIX 0
15 OUTPUT
27 FUNCTION
IC STROBE
Detects the tact switch position.
While a control
signal(DATA) is
transmitted to
1C103(LM7001)
Immediately after
1C201(TC9164N)
the FM "MONO"
SEGMENT
| GRID
57 VFDP
When the
is operating
transmitting DATA to
When the system is in
SIMULATED STEREO
=
NOT USED
Low while DATA is not transmitted.
Detects the tact switch position.
NOT USED
ire
aie nee At high after trasmitting a control
| | signal to FUNCTION IC201(TC9164N)
Set the FM MODE switch to MONO.
When the ON/OFF switch of the SIMULATED STEREO is
turned on.
NOT USED
H
H
OV
S
im
29
This is a SEGMENT control terminal for the FL display.