Sharp LC-32GD8EE Service Manual page 49

Troubleshooting Table (continued)
TROUBLESHOOTING TABLE
<During external connection>
SCART1:
No picture appears on EXT1-connected
monitor during the tuner reception.
Checklist:
1) Are input terminal on back of TV and "INPUT SOURCE" button
"INPUT SOURCE" appropriately.
2) Is the Signal Type (item) in MENU-Option-Input Select set to the same as that of the external device? ··· Set it to "CVBS", "Y/C" or "RGB".
3) Is ANT-CABLE disconnected or connected improperly? ··· Connect it correctly as per the operation manual.
4) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of EXT1-3. When sent by component, etc., that
signal is not sent to the monitor.
5) When the monitor picture is not sent and is not displayed on the monitor, refer to "No picture" for each terminal.
6) The video output from EXT1 is not the monitor output (output of the picture now watching). The picture of the last selected TV channel is always sent to
EXT1. (Specification)
Check SCART1,
Is video signal
YES external
sent to pin (19) of
connection or input
SCART1 (J1101)?
setting.
NO
Is video signal (V-
Check SCART1
OUT1) sent from
YES
(J1101) and
pin (2) of IC1102
peripheral circuits.
(SW)?
NO
Check IC1102
Is video signal (V-
YES (SW), Connector
OUT1) sent from
(P1101, SC2702)
pin (195) of
and peripheral
IC3002 (VCT)?
circuits.
NO
Is video signal Check power
(CVBS) sent to pin YES supply of IC1102
(191) of IC3002 (SW), Connector
(VCT)? (P1101, SC2702)
and peripheral
NO
Is video signal Check
(CVBS) sent from CONNECTOR
YES
pin (17) of IC201 (P201, SC2705) and
(IF-DEMOD)? peripheral circuits.
NO
Check IC201,
Is video signal (IF)
FL201 (SAW-FIL),
YES
sent from pin (8) of
Q202 and
tuner (TU201)?
peripheral circuits.
NO
Check 5/5 (CONT) V power supply pins (7)
and (1), I2C line pins (5) and (4) of tuner
(TU201) and peripheral circuits.
No picture on the monitor (2)
SCART2:
No picture from EXT1 appears on EXT2-
connected monitor.
Note: Normally, if the screen during display is
sent to EXT2, no picture is sent to EXT2.
on the remote control set up correctly? ··· See the operation manual and set
Check SCART2,
Is video signal
YES external
sent to pin (40) of
connection or input
SCART2 (J1101)?
setting.
NO
Is video signal (V-
Check SCART2
OUT2) sent from
YES
(J1101) and
pin (2) of IC1101
peripheral circuits.
(SW)?
NO
Check IC1101
Is video signal (V-
YES (SW), Connector
OUT2) sent from
(P1102, SC2703)
pin (194) of
and peripheral
IC3002 (VCT)?
circuits.
NO
Is video signal Check power
(VIN1) from EXT1 YES supply of IC1101
sent to pin (190) of (SW), Connector
IC3002 (VCT)? (P1102, SC2703)
and peripheral
NO
Check whether Check SCART1,
video signal is sent IC2702 (SW),
YES
to pin (20) of CONNECTOR
SCART1. (SC2702, P1101)
and peripheral
NO
circuits.
Check SCART1,
external
connection or input
setting.
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49
LC-32/37GD8E/RU
LC-32/37BT8E/RU
LC-32/37GD8E/RU
LC-32/37BT8E/RU
(Continued)
SCART2:
No picture from EXT3 appears on EXT2-
connected monitor.
Check SCART2,
Is video signal
YES external
sent to pin (40) of
connection or input
SCART2 (J1101)?
setting.
NO
Is video signal (V-
Check SCART2
OUT2) sent from
YES
(J1101) and
pin (2) of IC1101
peripheral circuits.
(SW)?
NO
Check IC1101
Is video signal (V-
YES (SW), Connector
OUT2) sent from
(P1102, SC2703)
pin (194) of
and peripheral
IC3002 (VCT)?
circuits.
NO
Is video signal Check power
(VIN7) from EXT3 YES supply of IC1101
sent to pin (184) of (SW), Connector
IC3002 (VCT)? (P1102, SC2703)
and peripheral
NO
Is video signal Check pin (184) of
(IN3YV) sent to pin IC3002 (VCT),
YES
(2) of IC1201 CONNECTOR
(SW)? (SC2703, P1102)
and peripheral
NO
circuits.
Is video signal Check pin (1)
(CVBS) sent from (IN3SW) of IC1201
YES
pin (1) of A/V- (SW), power
TERMINAL supply and
(J1201)? (EXT3) peripheral circuits.
NO
Check A/V-
TERMINAL
(J1201), external
connection or input
setting.
LC-26GA5E
LC-32GA5E