Technics RS-TR575 Service Manual

RS・TR575
Pin
No．
Mark
1O
Division
Func量lon
Check poin量
※Disc巾tion
53
RPT1
1
Deck l reel puIse det．input
（take up side）
TRANSISTOR
Q703
coIlector
Changes within theO←・
5V range each time the
5V
。一rLrL takeup「eel・ndecklis
through apProximately
30degrees．
54
RPS1
1
Deck l reel pulse det．input
（supply side）
TRANSISTOR
Q704
coector
51∫Uエ SuppIyreel。ndeckl
Fast FF／REW mode is disabIed unless both
signals53and54are active，
55
RPT2
1
Deck2reel pulse det．input
（take up side）
TRANSISTOR
Q705
coector
5V。∫しrL Takeup「eel・ndeck2
56
RPS2
匪
Deck2reel pulse det．input
（supply side）
TRANSISTOR
Q706
coector
5ざ皿 Supp監yreel。ndeck2
Fast FFREW mode is disabled unless both
signals55and56are active．
57
VDD
一
Microcomputer terminal
Connector
CN3⑳pin
＋5V，Backup
58
・VP
一
FL meter pudown voltage
input terminaI
Connector
CN3⑬pin
一20V
59
AVss
一
GND terminal（A／D）
Connector
CN3⑩pin
OV
60
VREF
聾
Reference power supPly
（＋5V）（A／D）
Connector
CN3⑱pin
CN1⑧pin
CN2⑨pin
Can be checked at pin70f connector CN8010r
at pin90f CN802．
61
KEY1
1
Key switch input
lC701⑪pin
DECK1：
When no key is pressed：5V
When Stop key is pressedl O．4V
When Power key is pressed：OV
When any other key is pressed：O to5V
62
KEY2
1
Key swltch input
lC701⑫pin
DECK2：
When no key is pressedl5V
When Stop key is pressed：0．4V
When any other key is pressed：O to5V
63
MODEL2
1
Model selector switch
IC701⑬pin
Approx．5V
64
ADI D1
1
Deck l Mechanism swltch
（FINH，CrO2，Metal，
OPEN／CLOSE）input
Connector
CN1③pin
No tape loaded：ApProx．4．1V
Normal tape with tab：Approx．2．3V
Chrome tape with tab：Approx．3．5V
Metal tape with tab＝Approx．3．5V
一36一

Technics RS-TR575 Specifications

General

Brand	Technics
Model	RS-TR575
Category	Cassette Player
Language	English