Technics RS-B465 Service Manual

TERMINAL FUNCTION OF IC
e 1C901 (M50940-263SP): Microcomputer
Reference Voltage terminal
Mechanism select signal
(Not used, connected to GND)
Remote control select
(Not used, connected to GND)
Lch level display
Rch level display
Tie)
Division
iFTe)
Division
Bei AC POWER off detect signai
Rec enable signal
(“L”: rec, “H”: other)
| — | GND terminal
Reset signal (“L”: reset)
OF
<
a @
REF
1WAY/
REV
18.8
Dl); oO m|| > ae)
on
mi |< al] 8 iw) nN
N >
8
CH
Clock OSC terminal (4MHz)
Dire i?) <=
Not used, connected to GND)
Not used, open)
=~
6 KEY 2
KEY 1
x<
«| X< O!lo| ZISi=
C OUT
< 7) ” W@W] wl o NM]atlo
Key SW input
Reader tape det. signal
LTD System clock signal (Not used, open)
a wo
:
Zz x
Reverse rec inhibit
Rotation pulse det. signal
Line out mute signal
(“H”: ON, “L”: OFF)
REC AMP mute signal
(“H”: ON “L”: OFF)
BIAS OSC ON/OFF control
(“H”: ON “L”: OFF)
Rec mode signal
(“H”: Rec “L”: other)
Dolby NR mode select signal
(“L”: Dolby C, “H”: other)
Forward rec inhibit
Mechanism mode SW terminal
Cassette half det. SW teriminal
BY
= 4
Reference voltage terimal
(Negative voltage)
<
no]
=)
= 4
10) Brake solenoid hold control signal
Oo
at On
a/W)/O
” .e)
-
SOL
SOL
Brake solenoid trigger control signal
PLP @O) © | WO!]wW/]o!]w = oO, SO INIO! a] &
x= > rT ia]
Trigger solenoid control signal
Reel motor control
Cc
= in x ra
(_ [stop [Puay-FF| REW |
5 Dolby NR mode select signal [RMA | ok | ok | Hw
(“L”: Dolby B, “tH”: other) RMF L H L
MPX ON/OFF control signal
(“L”: ON, “H”: OFF)
Capstan motor control
(“H": ON, “L”: OFF)
16
44
Oo
ara
$
xD 0
=
Cue/rev mode control
is (“H”: cue/rev, “L”: other)
Q By
fe) I. segment control signal
Ppa fafalel a.
Remote control signal
19
ARM
mute
rec
mute
Key
signal
56
1G
(“L”:
key
on,
“H”
key
off)
§
§
FL
grid
control
signal
62
7G
NC
Synchro start signal
(“L”: start, “H”: stop)
Auto tape selector signal
Nor CrO, Metal
ATSC L H H
ATSM L L H
AV = Power supply terminal
ve (Positive voltage)
Vv + Power supply terminal
oe (Positive voltage)
Timer normal or abnormal select
signal
(Normal: “H”, Abnormal: “L”)
=
oO 4
Pe BS S|
po
Pl> fép) 4
| alal g
zio
— jl —
M INTERNAL CONNECTION OF FL
¢ Grid connection diagram
6G 76
100 O00
Wag0g p00 dopoo
M.stop
MPX
[B)
[C]
56
Rocoo cone soda llontn ontoo oto oot
pred —_=15._="K -§ 3 ko) fa!
GUNN WagO0” WOON |jOnwod thood cngad aoooD
= C25 I/GrO2||I/Normal W/Metal
4G
play <>
¢ Anode connection table
en ae ee) ee ees
es nnn
e Pin connection
eee ae bapa aaa
FU)FIN|N : NIN|N|NIN|NIN|N|NININ
emma evel el ele] bfeielelsleleleieelels
Note 1.) NPesvssesesseeses Nopin.
Z)PL PQ Fi
rary
ar
wo
N
Cc
bs
N
C
loz s|
= 12 =
M@ BLOCK
LINE tN
(L CH) q
MIC IN
(L CH}
R/P
HEAD
(Leh)
ERA:
HEA

Technics RS-B465 Specifications

General

Brand	Technics
Model	RS-B465
Category	Cassette Player
Language	English