Sharp LC-19SH7E/RU, Service Manual, Page: 95 / 267

2008-03-14
LC-19SH7E/RU, LC-26SH7E/RU, LC-32SH7E/RU, LC-42SH7E/RU
95
<External input HDMI3>No picture on the display (10)
↓
Does not the picture of the HDMI signal input to HDMI3 go out?
MINI AV_UNIT:
↓
↓
YES
↓ NO
YES
↓ YES
<External input VGA>No picture on the display (11)
↓
Does not the picture of the PC IN(ANALOG) video signal input to VGA(15pin-D-SUB terminal) go out?
TERMINAL_UNIT:
↓
MAIN_UNIT:
↓ YES
↓ YES
Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of
VGA (CN554)?
NO
Check the setting of an external input device that connects of
CN554.
Refer to
“
The picture doesn't appear in all modes.
”
Is R/G/B/H/V signal sent to pin (AE20)/R, (AE19)/G, (AD19)/B,
(AC18)/H, (AB18)/V of IC U400?
NO
Check the line between IC U400 and CN554.
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN701) normal?
NO
Check the line between pin (AB5) of IC U400 and CN701.
Refer to
“
The picture doesn't appear in all modes.
”
Check the connection and setup with the external HDMI devices.
Are EDID data pin (6)(SCL) of IC U700 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), (16) of a HDMI
terminal(CN701)?
NO
Is access possible in the re-writing or exchange of EDID data of
IC U700?
Check CN701, IC U700 and peripheral circuits.
Is TMDS signal input into pin(AF18, AE18)/RX2
±
, (AF17,
AE17)/RX1
±
, (AF16, AE16)/RX0
±
, (AF15, AE15)/RXC
±
of IC U400?
Check the line between IC U400 and CN701.
NO