Sharp LC-19D1E/S-BK/WH User Manual

LC-19D1E/S-BK/WH
4 – 5
No sound (1) (during the reception of DTV broadcasting)
No audio output during
DTV reception
Checklist :
1) Is the volume set to MIN or MUTE on the remote control ? • • • Set the desired volume.
2) Is ANT-CABLE disconnected or connected improperly ? • • • Connect it correctly as per the operation manual.
(AV-UNIT)
(DIGITAL-UNIT)
Is the audio signal (L/R)
input to pins (17) and (18)
of IC501 (AV-SW)?
NO
Is the DTV-A-_L/R signal
output from pins (7) and
(1) of IC4605 (OP-AMP)?
YES Check either pins (8) and
(9) of Connector SC4602
or pins (8) and (9) of
Connector P503, or
check peripheral circuits.
YES NO
Is the audio signal
(TERMINAL_L/R) output
from pins (34) and (33) of
IC501 (AV-SW)?
NO Check the power sup-
ply B9V pins (38) and
peripheral circuits.
Is the audio signal (LEFT/
RIGHT_P/M) output from
pins (25)(24) and (29)(28)
of IC4001 (DIGITAL-
PROCESSOR) ?
YES Are LEFT_P/M and the
RIGHT_P/M signal input
to pins (5)(6) (3)(2) of
IC4605 (AMP)? or check
peripheral circuits.
(MAIN-UNIT) YES NO
Is the audio signal
(LOUT2/ROUT2) output
form pins (25) and (23) of
IC302 (A-CODEC) prop-
erly?
NO Check pins (1) and (4)
of IC302 (A-CODEC),
pins (11) and (12) of
Connector SC1202,
audio-mute line (Q301/
Q302) or peripheral
circuits.
Is the serial digital signal
(TSOUT7) input to pin
(36) of IC4001(DIGITAL-
PROCESSOR)?
YES Check the power supply
3.3V pins (3-129) 2.5V
pins (151-212) and 1.2V
pins (8-204) of IC4001
(DIGITAL PROCES-
SOR). Or check periph-
eral circuits.
YES NO
Is the audio signal L-CH
output to pins (44-45)
and (40-41) of IC303
(POWER-AMP) and also
the audio signal R-CH
output to pins (20-21)
and (16-17) of IC303
(POWER-AMP) properly?
NO Check UR12V power
supply input pins (47)
and (14) of IC303
(POWER-AMP) or
peripheral circuits.
Is serial digital signal
(FED7) input to pin(12) of
IC4005(BUFFER)?
YES Check IC4405(BUFFER)
or peripheral circuit.
YES (AV-UNIT) NO
Is the audio signal of pins
(1),(2),(3) and (4) of P301
(SP-Connector) output
normally ?
NO Check SP- Connetor
(P301) and peripheral
circuits
Is the serial digital signal
(FED[7]) output from pin
(43) of IC202 (DVB-T)?
YES Check the connection
between pin (10) of
SC4601 and pin (10) of
P202, or check periph-
eral circuit
YES NO
Check SP-BOX (right and
left) and WIRE HAR-
NESS.
Is the IF(D1/D2) signal
output from pin (17)/(16)
of Tuner (TU201)?
YES Check IC202(DVB-T) or
peripheral circuit.
NO
Check the B5V/B5V
(CONT)/IF5V power sup-
ply pins (11)/(1)/(3) , SDA/
SCL signal pins (9)/(8) of
Tuner (TU201).
YES
Replace Tuner (TU201).

Sharp LC-19D1E/S-BK/WH Specifications

General

Brand	Sharp
Model	LC-19D1E/S-BK/WH
Category	LCD TV
Language	English