Technics RS-X501 - System Block Diagrams; Main, Audio, and Control Circuit Block Diagrams

Function
VNR B “ON/OFF” select
pd
(“ON”:
,
“OFF”:
“H”)
i9
eidecode
select
signal
ne R circuit
f golby N
OFF”
select
signal
of
Nt
supply
circuit
(“ON”:
9%,
“OFF”:
“H”)
L
a
J data signal to FL display
of
F” select signal of
‘0 FADE” display (“ON”:
s
“OFF”:
“H”)
ol!
f ot ysed,
ic
select
det.
signal
(““H”:
W
ciGNAL,
“L”:
ON
SIGNAL)
y0
“ye
rec.
inh.
switch
select
vai
of
deck
1
(“ON”:
“L”,
“H”)
d, open)
rec. inh. switch select
of deck 1 (“ON”: od ae
“H")
open)
Bonal for FL display
Power supply
Voc)
Bignal of deck 2
reset terminal of
0
Division
X22 Mechanism motor speed
select signal of deck 2 (X1”:
(P2 (7)) “H”, “x2”: “L”)
SOL2 Mechanism plunger
(P2 (6))
“ON/OFF” select signal of
MOTOR2
5 N
deck 2 (“ON”: “H”, “OFF”: “L”)
Mechanism motor “ON/OFF”
select signal of deck 2 (“ON”:
“H”, “OFF”: “L”)
(P2 (5)
Mechanism mode “ON/OFF”
select signal of deck 1 (“ON”:
“LR, “OFF”: “H”)
MODE1
(P2 (4))
HALF1
(P2 (3))
X21
(P2 (2))
SOL1
(P2 (1))
MOTOR1
(P2 (0))
Cassette half detection switch
terminal of deck 1 (“ON”: “L”,
“OFF”: “H”)
Mechanism motor speed
select signal of deck 1 (“X1” 1:
“H", XO": HL")
Mechanism plunger
“ON/OFF” select signal of
deck 1 (“ON”: “H”, “OFF”: “L”)
Mechanism motor “ON/OFF”
select signal of deck 1 (“ON”:
“H”, “OFF”: “L”)
0
Division
Rec level control signal
Lch level signal
Rch level signal
Reset terminal (“RESET”: “H”)
Test terminal
Clock OSC terminal (4MHz)
Power supply terminal
Grid signal for FL display
Not used, open
o|] =| 2
Hm | mi| @
o
8) all
Mi BLOCK DIAGRAM
4N7384-8
ELECTRIC VOLUME
s
DECK 1
PLAYBACK HEAD §
M52/8L
AN7351K
IC 2112
REC/ PLAYBACK AMP
05,7,9,11,13
(Q6 ,8,10,12,14)
Switching
(tape select
high speed)
( indicates pin No. g4o1, 403
of right channel
VR3(VR4)
PLAYBACK GAIN
ADJ.(DECK 1)
(9402, 404)
TEAO6ES
i a)
DOLBY NR (B/C)
MPX
Control
lain lin ce
0908, 909
Switching
(8/C/OFF)
VRT(VR8)
OVERALL
GAIN ADJ.
Music Selector
ETE. osic
MUSIC SELECTOR
j
a
a902 | “745
Switch 48,
(RP select)
—___________ 4px
9903 e 42; 72
(Len)
03104)
Switching
(Play /on)
DECK2
R/P HEAD = 3
(Len
" $953
(ATS/CrO2)
L
4
UPCIZ97CA
DOLY HXPRO] |
DECK2
ERASE x
HEAD
!
Ssamt2
l
s976
(aTss aie
'
0505 PREC
Ea :
°
$725-1 °
(POWER)
on
QRESET
‘
M
PWIN
i)
vr i 10
(REC LEVEL) —Shvein
~e
PWM
focus
!
$971 (MODE) 60)
$972 (HALF) o pHooe!
O———+0 HALF I
DN6SSIA
HALL IC
eco
36
Oo : REEL!
4
DECK! i ar I
0916, 917 I
Solenoid _
socenoinfY x 1
ss '
0920, 921 \
Motor
control