Technics RS-TR575 Service Manual

RS・TR575
Pin
No．
Mark
1O
Division
Func竜ion
Check poin量
※Discription
18
POF
1
Power Qff det．input ON：
H，OFF＝L
Connector
CN3⑫pin
5v Rectified waveform at
both50and60Hz
o （clamping at5V）
The microprocessor goes into standby mode
when this signal is removed，
19
RESET
1
Reset input ON：L，
OFF：H
lC701⑲pln
一
Usuay H（ニ5V）but L
A few tens fOr a period Of a few to a
1
〆
few tens of
miiseconds is first
plugged in when the
player．
20
SDAT
O
Serial data output for DA
converter（IC151）serial−
Parael converter（IC152）
ON：HOFF：L
，
Connector
CN3⑩pin
51」欄 器outputin「esponse
21
SCLK
0
Serial clock output for DA
converter（IC151）1seria卜
Parallel converter（IC152）
ON：H，OFF：L
Connector
CN3⑨pin
A fewμs Afewms pulse slgnal is emitted
5v鵠 。nlywhenam。de
。」欄 Change・CCUrS．
22
XlN
1
Microcomputer cbck OSC
terminal
Z702①pin
terminaI
㎜ 繍lato「wavefo「mat
23
XOUT
O
Microcomputer clock OSC
terminaI
Z702③pin
terminal
㎜ 繍lato「wavefo「mat
24
GND
一
Microcomputer GND
lC701⑭pin
OV
25
MしAT2
O
Latch output（Deck2）for
mechanismcontrolON＝H，，
OFF：L
Connector
CN2⑦pin
Serial data is sent to：IC801，IC802量and the
mechanism driver IC．
Select the Deck2data from this serial data and
Ioad it into IC802．
26
MLAT1
0
Latch output（Deck1）for
mechanism control ON：H，
OFF：L
Connector
CN1⑥pin
Select the Deck l data from the serial data and
Ioad it into IC801．
27
MDAT
0
Serial data output for
mechanism control ON＝H，
OFF：L
Connector
CN1⑤pin
CN2⑥pin
Serial data used tocontrol the mechanism driver
via IC801and IC802．
28
MCLK
0
Serial clock output for
mechanism control ON＝H，
OFF＝L
Connector
CN1④pin
CN2⑤pin
Emitted only when mechanism mode changes．
29
〜45
P1
〜
P17
0
FL meter segment output
ON：H，OFF：L
FL701
⑫〜⑳pin
0．5ms
＋5V
O
−20V
About Ab・ut4ms
46
〜52
1G
〜
7G
0
FL meter glid output ON：
H，OFF：L
FL701
⑤〜⑪pin
＋5V
O
−20V−
H
一
for O〜8pulses of dura塾ion
approx．0．5ms each。
一35一

Technics RS-TR575 Specifications

General

Brand	Technics
Model	RS-TR575
Category	Cassette Player
Language	English