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STR-GX290/GX390
4-6. SCHEMATIC
DIAGRAM —DISPLAY Section—
1
2
3
4
=)
6
7
8
93
10
11
12
13
14
*
TS
16
17
18
9
20
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LB1493
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|
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adjustment for repair.
Voltage
and
waveforms
are dc
with
respect
to ground
under no-signal (detuned) conditions.
e
Voltages are taken with a VOM (input Impedance 10M 2).
Voltage
variations
may
be noted
due to normal
produc-
tion tolerances.
°
Signal path.
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All capacitors are in wF unless otherwise noted.
pF: uwuF
FUNCTION MUTE
| 24
capi
COTE
29
| | CNPIO4 ©
i
|
a e
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5
= ne
e RATUE
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2s aS
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specified.
[_STUNER-MUTE (| 19 |
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Spe
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A:
internal component.
4
|
18
:
1
,
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4
; nonflammable resistor.
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& SeLSBIOA
|
By mal der ot-
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ted
line with
mar
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ee
ERA
are critical for safety:
PF-0
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ns
|
Replace only with part
I
|_ PROTECTOR IN | 9. |
a,
|
number specified.
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STOP
5
7
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NO
1 -22:GX290
(G)
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Q
18
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