Sharp LC-22LE320 Service Manual page 99

Does not the picture of the HDMI signal input to HDMI1 go out?
MINI AV_UNIT:
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN502) normal?
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)?
Is TMDS signal input into pin(63, 62)/RX2-2±,(60, 59)/RX2-1±, (57,
56)/RX2-0±, (54, 53)/RX2-C± of IC U501?
Is TMDS signal output from pin(17, 18)/ 2±,(20, 21)/ 1±, (23, 24)/ 0±,
(26, 27)/ C± of IC U501?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the HDMI signal input to HDMI2 go out?
MINI AV_UNIT:
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN501) normal?
Are EDID data pin (6)(SCL) of IC U502 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), pin (16) of a HDMI
terminal(CN502)?
Is TMDS signal input into pin(14, 13)/RX1-2±,(11, 10)/RX1-1±, (8,
7)/RX1-0±, (5, 4)/RX1-C± of IC U501?
Is TMDS signal output from pin(17, 18)/ 2±,(20, 21)/ 1±, (23, 24)/ 0±,
(26, 27)/ C± of IC U501?
Refer to "The picture doesn't appear in all modes."
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
<External input HDMI1,2,3>No picture on the display (8)
↓
↓
YES
YES
YES
↓YES
↓
YES
YES
YES
↓
YES
2008-03-14
NO
Check the line between pin (50) of IC U501 and CN502.
Check the connection and setup with the external HDMI devices.
NO
Is access possible in the re-writing or exchange of EDID data of
IC U503?
Check CN502, IC U503 and peripheral circuits.
NO
Check the line between IC U501 and CN502.
NO
Check IC U501 and peripheral circuits.
NO
Check the line between pin (64) of IC U501 and CN501.
Check the connection and setup with the external HDMI devices.
NO
Is access possible in the re-writing or exchange of EDID data of
IC U502?
Check CN502, IC U503 and peripheral circuits.
NO Check the line between IC U501 and CN501.
NO
Check IC U501 and peripheral circuits.
99
↓
↓NO
↓
↓NO