Schematic Diagram - Pioneer TX-1080Z Service Manual

Fm/am digital synthesizer tuner
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1
2
3
p
5
TX-1080Z
mV ; Signal
voltage
at FM 400Hz
+75 Hz DEV.
R401
3.3%
SW1 ASSEMBLY
SW2 ASSEMBLY
5. SCHEMATIC DIAGRAM
|
i
TUNER
ASSEMBLY
{AW2Z1350)
|
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st
Q108, 109: BUFFER
+"2V
L105
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'
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ows.
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33k
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T102: SENSITIVITY,
R128
1C102: MPX IC
fe
7101: SENSITIVITY
;
MPX DISTORTION
330
O00p
Q102: FM MIXER
( SNO cntor | SP CONNECTOR
4P ANTENNA
Q101: FM RF AMP
ADJUSTMENT
ADJUSTMENT
Tee
at
HN
TERMINAL
aes a Sen
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CT
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AKA-O17
F301
7101
;
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1102
6)
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-
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=.
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FORM SHAPING
33
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ADJUSTMENT
i
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L107: TRACKING ADJUSTMENT
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100/10kHz
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v
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ON/OFF
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ome | TTT
TTT
1101
> LAI265S
Q112, 13
: OTCI43ES
Baers
| R205 1M 30] ae
ago
:
1€102
> AN7470P
Q114, 116,
R183
m7
1C103
: LM7001
On?
>: DTAIS3ES
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31
47k
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Pico ioe a
10104
: PDS5054
Q115,121
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vss
:
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Q101
=: 2SK241
|
any,
[2
=
th
Q112: }2/24 IND. DRIVER
Q102
: 28C2786
D101,102.:
~:ITT310
pet
ai
Q103,104 : eecceee
D103
> KVO71I4-2
Q114: TUNE IND. DRIVER
1C104: TUNER CONTROL
LZ, J\uS2
eu) es
ai
ibs
: 2SK246
D105~108,
Rig
uBERPoSETESSSeessrehesaesrysyess
FSezeu
MICSORAMEUTER
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J
Q107
: 2SCI740SLN
—s_0141, 113,
1 1 4 : 1SS131
ited
Z z 8
.
g
Q113
Q12
eae
Q108, 109
3
| |
aS
ai:
2sci740s
D10,501
: 'RD7.5ESB
isa'
é
|
113: FM MONO IND. DRIVER
+—+—t | | |
Q110
: 28A933S
DII2
: RD6.2ESB
C163
: ACH1023
+++
ttt |
=
aa
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Re eee
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Sees
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be
le
e s e
rer ts
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mm
:
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,
iT
:
1, RESISTORS
4. OTHERS:
5.
SWITCHES
SOOO
Od
6 OO)
A
indicated in Q, 1/8W, 1/4W, +5% tolerance unless otherwise
noted
=> ; Signal route.
sio1
: 1/713
S301
: AUTO / MANUAL
BEES
S401~404: ASG-7It
ki KO, Mi MQ, (F): 21%, (G)i £2%(K)i 210%. (M); t20% tolerance
© : Adjusting point.
sio2 : 2/14
_
$302 : FM MONO
S103
+ 3/15
$301,302 : ASG-711
2. CAPACITORS:
Tne A\ mark found on some component parts Indicates the Importance
$104 : 4/16
$401 : TUNING -
indicated in capacity (hF)/voltage
(V) unless otherwise
noted
of the safety factor of the part. Therefore, when replacing, be sure
S105
: 5/17
$402 : TUNING
+
:
6/18
$403 : MEMORY
b: pF. Indication without voltage is SOV except electroly.ic capacitor,
1 Use parts of Identical designation.
.
.
ess
Ae
ares
:
marked capacitors and resistors have parts numbers.
$107 : 7/19
$404 : BAND SEL
:
;
:
si08
: 8/20
Se VOLTAGE SURREN:
This is the basic schematic diagram. but the actual circult may vary due
= sig9g :_-9/21
S500 : CHANNEL STEP FM/AM
"J; DC voltage (V) at no input signal
to improvements In design.
sitio
: 10/22
50/9 kHz — 100/10kHz
D402 : AEL1009
Value in(
) is DC
voltage
at rated
power.
:
st:
1/23
oo
ee
mA i; DC
current
at no input
signal.
|
sie.
: 12/24
The underlined indicates the switch position.
cw

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