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Sharp LC-26AF3 M/H/X

Sharp LC-26AF3 M/H/X
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LC-26AF3 M/H/X
LC-32AF3 M/H/X
LC-37AF3 M/H/X
36
TROUBLE SHOOTING TABLE (Continued)
No sound (1) (during the reception of TV broadcasting)
No audio output during UHF/VHF reception
Confirmation of the settings:
1) Is the volume set to MIN or MUTE on the remote control? Ā„Ā„Ā„ Set the desired volume.
2) Are headphones connected to HEADPHONE (J1203)? Ā„Ā„Ā„ Disconnect them.
3) Is the ANT-cable disconnected or connected improperly? Ā„Ā„Ā„ See the operation manual and connect it correctly.
NO
Are the audio signals (L/R) sent from pins (28) and (27) of
IC2501 (MSP)?
NO
YES
Is the audio signal output of
pins (7) and (1) of IC2504
normal?
Check IC2504 or peripheral
circuits.
NO
YES
YES
Is the audio signal output of
pin (4) of IC3900/IC3901
(AUDIO-AMP) normal?
Check IC3900/IC3901
(AUDIO-AMP) or peripheral
circuits.
NO
Is the audio signal output of pins
(1) and (4) of P3900 (AUDIO-
CONNECTOR) normal?
YES
Check the left and right SP-
BOX and wire harnesses.
Check P3900 (AUDIO-
CONNECTOR) and
peripheral circuits.
YES
NO
Is the audio signal (S-OUT)
sent from pin (12) of IC1104
(IF-DEMOD)?
Check Q2500 (AMP) and
peripheral circuits.
YES
Is the IF signal (ANA_IN1+)
sent to pin (67) of IC2501
(MSP)?
Check that +5 V and +8 V is
supplied respectively to pin
(65) and pin (39) of IC2501,
or check peripheral circuits.
YES
NO
NO
Is the IF signal sent from pin
(11) of TUNER (TU1100)?
Check SF1101 and
peripheral circuits.
Check that 33 V and 5 V is supplied respectively to pin (9) and pin
(7) of TUNER (TU1100), or check their peripheral components.
No monitor sound (2) (sound from EXT terminal to external devices during the reception of TV broadcasting)
ī˜€ī˜ ī˜ƒī˜„ī˜…ī˜†ī˜ ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜‰ī˜Šī˜ī˜‹ ī˜Œī˜ī˜Žī˜ ī˜‡ī˜ī˜Šī˜‹ī˜†ī˜‘ī˜ƒī˜’ī˜“ ī˜€ī˜ ī˜ƒī˜„ī˜…ī˜†ī˜ ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜‰ī˜Šī˜ī˜‹ ī˜Œī˜ī˜Žī˜” ī˜‡ī˜ī˜Šī˜‹ī˜†ī˜‘ī˜ƒī˜’ī˜“ ī˜€ī˜ ī˜ƒī˜„ī˜…ī˜†ī˜ ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜‰ī˜Šī˜ī˜‹ ī˜Œī˜ī˜Žī˜• ī˜‡ī˜ī˜Šī˜‹ī˜†ī˜‘ī˜ƒī˜’ī˜“
ī˜–ī˜— ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜˜ī˜–ī˜€ī˜ī˜™ī˜šī˜›ī˜œī˜™ī˜ī˜žī˜Žī˜Ÿ ī˜ī˜‰ ī˜ˆī˜†ī˜‘ī˜— ī˜˜ī˜• ī˜Ÿ ī˜ƒī˜‘ī˜… ī˜˜ī˜•!ī˜Ÿ
ī˜ī˜‰ ī˜–"ī˜”#$ī˜ ī˜˜%&'ī˜Ÿ ī˜‘ī˜ī˜Šī˜‹ī˜ƒī˜’(
ī˜–ī˜— ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜˜ī˜–ī˜€ī˜”ī˜™ī˜šī˜›ī˜œī˜™ī˜ī˜žī˜Žī˜Ÿ ī˜ī˜‰ ī˜ˆī˜†ī˜‘ī˜— ī˜˜ī˜•)ī˜Ÿ ī˜ƒī˜‘ī˜… ī˜˜ī˜•ī˜•ī˜Ÿ
ī˜ī˜‰ ī˜–"ī˜”#$ī˜ ī˜˜%&'ī˜Ÿ ī˜‘ī˜ī˜Šī˜‹ī˜ƒī˜’(
ī˜–ī˜— ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜˜ī˜–ī˜€ī˜”ī˜™ī˜šī˜›ī˜œī˜™ī˜ī˜žī˜Žī˜Ÿ ī˜ī˜‰ ī˜ˆī˜†ī˜‘ī˜— ī˜˜ī˜•)ī˜Ÿ ī˜ƒī˜‘ī˜… ī˜˜ī˜•ī˜•ī˜Ÿ
ī˜ī˜‰ ī˜–"ī˜”#$ī˜ ī˜˜%&'ī˜Ÿ ī˜‘ī˜ī˜Šī˜‹ī˜ƒī˜’(
YES YES YES
ī˜–ī˜— *ī˜ž+ī˜–ī˜ ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜—ī˜†,ī˜‘ī˜ƒī˜’ ī˜˜ī˜–ī˜€ī˜ī˜™ī˜šī˜›ī˜œī˜™ī˜ī˜žī˜Žī˜Ÿ ī˜—ī˜„ī˜ˆī˜ˆī˜’ī˜†ī˜ī˜…
ī˜‡ī˜ ī˜ˆī˜†ī˜‘ī˜— ī˜˜ī˜•ī˜Ÿ ī˜ƒī˜‘ī˜… ī˜˜ī˜ī˜Ÿ ī˜ī˜‰ ī˜Œī˜ī˜Žī˜ ī˜˜&"ī˜ī˜”$ī˜ī˜Ÿ(
ī˜–ī˜— *ī˜ž+ī˜–ī˜ ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜—ī˜†,ī˜‘ī˜ƒī˜’ ī˜˜ī˜–ī˜€ī˜”ī˜™ī˜šī˜›ī˜œī˜™ī˜ī˜žī˜Žī˜Ÿ ī˜—ī˜„ī˜ˆī˜ˆī˜’ī˜†ī˜ī˜…
ī˜‡ī˜ ī˜ˆī˜†ī˜‘ī˜— ī˜˜ī˜•ī˜Ÿ ī˜ƒī˜‘ī˜… ī˜˜ī˜ī˜Ÿ ī˜ī˜‰ ī˜Œī˜ī˜Žī˜” ī˜˜&"ī˜ī˜”$$ī˜Ÿ(
ī˜–ī˜— *ī˜ž+ī˜–ī˜ ī˜ī˜„ī˜‡ī˜ˆī˜„ī˜‡ ī˜—ī˜†,ī˜‘ī˜ƒī˜’ ī˜˜ī˜–ī˜€ī˜•ī˜™ī˜šī˜›ī˜œī˜™ī˜ī˜žī˜Žī˜Ÿ ī˜—ī˜„ī˜ˆī˜ˆī˜’ī˜†ī˜ī˜…
ī˜‡ī˜ ī˜ˆī˜†ī˜‘ī˜— ī˜˜)ī˜Ÿ ī˜ƒī˜‘ī˜… ī˜˜ī˜•ī˜Ÿ ī˜ī˜‰ ī˜Œī˜ī˜Žī˜• ī˜˜-ī˜ī˜”$ī˜ī˜Ÿ(
NO NO NO
".ī˜/0 &ī˜ī˜™%ī˜„ī˜‡ī˜ /ī˜†ī˜Š/ī˜„ī˜†ī˜‡ī˜— 1ī˜ī˜”$ī˜•ī˜›1ī˜ī˜”$) ī˜ƒī˜‘ī˜…
&ī˜ī˜™%ī˜žī˜Žī˜Œī˜™ī˜šī˜–ī˜€ī˜Œ ī˜˜ī˜ˆī˜†ī˜‘ !) ī˜ī˜‰ ī˜–"ī˜ī˜”$ī˜•ī˜Ÿī˜“
1ī˜ī˜”$ī˜•ī˜›)
&ī˜ī˜™%ī˜žī˜Žī˜Œ
1ī˜ī˜”$$ī˜›ī˜
&ī˜”ī˜™%ī˜žī˜Žī˜Œ
1ī˜ī˜”$!ī˜›
*ī˜™%ī˜žī˜Žī˜Œ
".ī˜/0 &ī˜”ī˜™%ī˜„ī˜‡ī˜ /ī˜†ī˜Š/ī˜„ī˜†ī˜‡ī˜— 1ī˜ī˜”$$ī˜›1ī˜ī˜”$ī˜ ī˜ƒī˜‘ī˜…
&ī˜”ī˜™%ī˜žī˜Žī˜Œī˜™ī˜šī˜–ī˜€ī˜Œ ī˜˜ī˜ˆī˜†ī˜‘ !! ī˜ī˜‰ ī˜–"ī˜ī˜”$ī˜•ī˜Ÿī˜“
".ī˜/0 *ī˜™%ī˜„ī˜‡ī˜ /ī˜†ī˜Š/ī˜„ī˜†ī˜‡ī˜— 1ī˜ī˜”$!ī˜›1ī˜ī˜”$ ī˜ƒī˜‘ī˜… *ī˜™
%ī˜žī˜Žī˜Œī˜™ī˜šī˜–ī˜€ī˜Œ ī˜˜ī˜ˆī˜†ī˜‘ ī˜” ī˜ī˜‰ ī˜–"ī˜ī˜”$ī˜•ī˜Ÿī˜“

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