Sharp LC-26SH330, Service Manual

Page: 53 / 223

2008-03-14
LC-26SH330, LC-32SH330, LC-42SH330
53
<External input HDMI1>No picture on the display (7)
↓
Does not the picture of the HDMI signal input to HDMI1 go out?
MINI AV_UNIT:
↓
↓
YES
↓ NO
YES
↓ YES
Is the HOT_PLUG detection function of pin (19) of a HDMI
terminal (CN502) normal?
NO
Check the line between pin (AN16) of IC U401 and CN502.
Refer to
“
The picture doesn't appear in all modes.
”
Check the connection and setup with the external HDMI
Are EDID data pin (6)(SCL) of IC U503 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), pin (16) of a HDMI
terminal(CN502)?
NO
Is access possible in the re-writing or exchange of EDID data of
IC U503?
Check CN502, IC U503 and peripheral circuits.
Is TMDS signal input into pin(AP15, AT15)/RX2-2
±
,(AR14,
AU14)/RX2-1
±
, (AP13, AT13)/RX2-0
±
, (AR12, AU12)/RX2-C
±
of
IC U401?
Check the line between IC U401 and CN502. NO