Technics SX-PR270 M Service Manual page 20

Pcm digital ensemble
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TET
AS
5
6
7
8
14
CONTROL
PANEL
LEFT CIRCUIT
ITAL
ECORDER
TROL
CONNEC TOR
+5
WR
FWR
1C24
Transceiver
x
WR
All~ AID
AO vAIG
Icg
256Kbit
Pseudo
Static RAM
x20)
vRi
ee,
ai~a4
=| LED Driver
1c2,1C3
Dota
Bus
Dato
Bus
OBO
~ 087
Ls!
ADO
[RAO
~ RAID
Address
Bus
Generator
fe} m
RAO~RAID
RAO~
RAIS
Tone
WAVE
ROM
WAVE
ROM
C1 6Mbit)
C16Mbit)
OTO~
OTIS
RDO~ ROIS.
Data
Bus
RAO~
RAID
OTO~
OTIS
CONTROL PANEL
RIGHT CIRCUIT
LCD
CIRCUIT
RDO~RD4,ROB
~n010 |
WAVE
ROM
( 8M bit)
Power Switch
i
PCI
Fi
AC
IN
CIRCUIT
PAE
Primary
Circuit
LED
Driver
DOO~DOIO, DOI2, DOI4, DOIG
1C2~1C5
0018 ~ DO2I
Doto
Bus
FDCN
+5V
Switching
Regulator
+15V
Regulator
-I5V
Regulator
POWER
TRANSFORMER
+5V
=
re
|
1C27
-15A
=
Rectifier
+5V
ba)
Address
Bus
— DAO~ DAT
rer
Reyalutor
z
"
(C26
a
-
Re
rm
ee
eee
ts}
-5V
Sonne cs
eo
~50A
Regulator
Mrxoq] 8°? Ba
aver] Sh,
5 $8
ba
Power
ry
ter
Keeling 2e°
256K
256K
eee
ae
amplifier
Lc
l z
Dynamic RAM
Dynamic RAM
-5A
(Leh)
C027]
o
001~ 004
DO1~Da4
-
-
oa
(=)
0D4
~DD3
Dota
Bus
fi ~dD7
D1l~D3, C26
Memory
1C8-2, Qi3~QI6
5
Back-up Circuit
Power
Equalizing
Amplifier
Circuit
(Reh)
cll
ICI7
m
IC16
IC1B-1
§
Yl
=
~YT
Pp
<
yr
DATA
1ouT
2
fixing
|
_
2
1C9-2 ,QI1,Q12
L——-—-{~——-4J
RD
o
=
eS
[Se
aie
=
Pry
2
J
oO
>
oa
z
2
4
DBO~ 087
8
=
Ic18-2
ée
g
Kae
=
~MD7
e
7
AMPR|
2
© =
©
oo
~YT
ges
OUTSLO
= zo
~
OUTSL2
AUX
a
Lech
AUX
;
Amplifier
Reh
AUX
Amplifier
J
a
SNS
1C10-1,1C10-2,D4,06
Reset
MBES
Circuit
Headphones
Power
Indicator
a>
Tone signal
aaa Control signal
7
SPI
13cm
x 6cm,80
=
SP5
6.5¢em,8N
ae
SP3
16cm
,8N
[Td
SP4
16cm,
80
7
SP6
6.5cm,
8N
SP2
i3em
x 6em,80

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