Read Sharp LC-42LE320E Service Manual online
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
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<External input HDMI1,2,3>No picture on the display (8)
↓
Does not the picture of the HDMI signal input to HDMI1 go out?
MINI AV_UNIT:
↓
↓
YES
↓NO
YES
YES
↓YES
Does not the picture of the HDMI signal input to HDMI2 go out?
MINI AV_UNIT:
↓
↓
YES
↓NO
YES
YES
↓
YES
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN502) normal?
(CN502) normal?
NO
Check the line between pin (50) of IC U501 and CN502.
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 U503 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), pin (16) of a HDMI
terminal(CN502)?
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?
IC U503?
Check CN502, IC U503 and peripheral circuits.
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?
56)/RX2-0±, (54, 53)/RX2-C± of IC U501?
Check the line between IC U501 and CN502.
NO
Is TMDS signal output from pin(17, 18)/ 2±,(20, 21)/ 1±, (23, 24)/ 0±,
(26, 27)/ C± of IC U501?
(26, 27)/ C± of IC U501?
Check IC U501 and peripheral circuits.
NO
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN501) normal?
(CN501) normal?
NO
Check the line between pin (64) of IC U501 and CN501.
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 U502 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), pin (16) of a HDMI
terminal(CN502)?
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 U502?
IC U502?
Check CN502, IC U503 and peripheral circuits.
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?
7)/RX1-0±, (5, 4)/RX1-C± of IC U501?
Check the line between IC U501 and CN501.
NO
Is TMDS signal output from pin(17, 18)/ 2±,(20, 21)/ 1±, (23, 24)/ 0±,
(26, 27)/ C± of IC U501?
(26, 27)/ C± of IC U501?
Check IC U501 and peripheral circuits.
NO
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