Sharp LC-26SH330, Service Manual

Page: 80 / 223

LC-26SH330, LC-32SH330, LC-42SH330
80
Does not the picture of the HDMI signal input to HDMI3 go out?
MINI AV_UNIT:
↓
↓
YES
↓ NO
YES
YES
↓
YES
<External input VGA>No picture on the display (9)
↓
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
NO
Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V
of VGA (CN101)?
NO
Check the setting of an external input device that connects of
CN101.
Refer to
“
The picture doesn't appear in all modes.
”
Is R/G/B/H/V signal sent to pin (AT25)/R, (AU24)/G, (AT23)/B,
(AR22)/H, (AU22)/V of IC U401?
NO
Check the line between IC U401 and CN101.
Is the HOT_PLUG detection function of pin (19) of a HDMI
terminal (CN506) normal?
Check the line between pin (35) of IC U501 and CN506.
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 U504 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), pin (16) of a HDMI
terminal (CN506)? NO Is access possible in the re-writing or exchange of EDID data
of IC U504?
Check CN506, IC U504 and peripheral circuits.
Is TMDS signal input into pin(48, 47)/RX3-2
±
,(45, 44)/RX3-1
±
,
(42, 41)/RX3-0
±
, (39, 38)/RX3-C
±
of IC U501?
Check the line between IC U501 and CN506.
NO
Is TMDS signal output from pin(17, 18)/ 2
±
,(20, 21)/ 1
±
, (23, 24)/
0
±
, (26, 27)/ C
±
of IC U501?
Check IC U501 and peripheral circuits.
NO