Technics RS-TR575 - IC TERMINAL FUNCTIONS

RS・TR575
■TERMINAL FUNCTION OF IC
●IC701（M38123M4101F》＝MICROCOMPUTER
＊To checkthe conteハts of the item※in the IC terminal tabIe，set the unit to the state
described in theMotorControl PCB Checking Methodon page31．
Pin
No．
Mark
1O
Division
Function
Check poin量
※Disc巾量ion
1
ADI D2
1
Deck2Mechanism switch
（FINH，CrO2，Metal，
OPEN，CLOSE）input
Connector
CN2③pin
No tape Ioad：ApProx．4．1V
Normal tape with tab：Approx．OV
CrO2tape with tab：Approx．1．1V
Metal tapewith tab：Approx．1，7V
2
ADDIC
1
Common input on Deck l
with analog IC switch
lC703⑬pln
The waveform changes with the meter input
signal．
3
ADD2C
1
Common input on Deck2
with analog IC switch
lC703③pin
4
KEY3
1
Key switch input
IC701④pin
An analog value from O to5V appears when an
input key for power，synchro・start，XI IX2，NR，
reverse，modification or test mode is pressed．
十5V without any key inputs and OV with the
power key ON．
5
SEL・B
0
Select output B with the
analog IC swltch
IC703⑨pin
門『H 2ms Constantpulseoutput．
1コ㎜
6
POWER
0
Power control output ON：
H，OFF：L
Connector
CN3⑬pin
Power ON：H（＝5V）
Power OFF＝L（＝OV）
7
SEL−A
110
Select output A with the
anaIog IC switch
lC703⑩pin
へ
ト』輔 4ms
ll皿， Constantpulseoutput・
8
MSP
1
TPS signal det．input ON：
L，OFF：H
Connector
CN3B⑧pin
TPS mode
No program：H（＝5V）
Programs：L（ニOV）
9
一 一
Not used
一
一
10
DMT
O
Lineout mutesignal output
ON＝L，OFF：H
Connector
CN3⑭pin
L（＝OV）when sound is belng produced in the
play or REC mode andH（＝2．5〜5V）when no
sound is produced ln the stop of FFlREW mode．
11
ECS
O
E2PROM chip select signaI
ON：H，OFFL
Connector
CN704①pin
CN704⑤pin
論 （ex…F・r↑REVPLAY
5」」㎜ゴr一艦，d、、modeischanged）
12
ECLK
O
E2PROM serial clock output
ON：L，OFF＝H
Connector
CN704②pin
CN704④pin
5」」旧llllL 鵠潔，ε鵯e搬．
13
EDAT
110
E2PROM serial data
input／output
Connector
CN704③pin
（ex＿For⇔REV PLAY
5」」旧IllL 朧f謡h辮s、n
response to ll above。
14
PBADJ
O
Playback adj．output ON＝
H，OFF：L
Connector
CN3⑦pin
Used for adjustment at factory but in the
finished product． Remains atL（＝OV）。
15
OSC
O
Audio signal for adjustment
output
Connector
CN3⑥pin
Generated signals at approx．400Hz，10kHz and
3kHz（square wave（H and L，O and5V）in REC
mode during adlustment of ATC）。
16
STB
O
Strobe（bad）output for the
DA converter（IC151）
Connector
CN3⑪pin
Used to Ioad output for the DA converter（IC151）．
17
REMOTE
1
Remocon signal input ON：
H，OFF：L
Z701
①pin
H and L pulse waveform appears on the input of
a remOte COntrd Signal，
一34一