Sharp LC-32SV502B, Service Manual

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LC-32SV502B/LC-42SV502B/LC-42SV602B/LC-46SV602B/LC-46SV502L
45
<External input HDMI1 >No picture on the display (8)
↓
Does not the picture of the HDMI signal input to HDMI3 go out?
MINI AV_UNIT:
↓
↓ NO
YES
↓ YES
↓ YES
<External input HDMI1 >No picture on the display (9)
↓
Does not the picture of the HDMI signal input to HDMI4 go out?
MINI AV_UNIT:
↓
↓ NO
YES
↓ YES
↓ YES
<External input VGA>No picture on the display (10)
↓
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, (13)/H, (14)/V of
VGA (CN103)?
NO
Check the setting of an external input device that connects of
CN103.
Refer to “ The picture doesn't appear in all modes. ”
Is R/G/B/H/V signal sent to pin (AM15)/R, (AK15)/G, (AK13)/B,
(AL13)/H, (AM13)/V of IC U401?
NO
Check the line between IC U401 and CN103.
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN504) normal?
NO
Check the line between pin (41) of IC U502 and CN504.
Refer to “ The picture doesn't appear in all modes. ”
Check the connection and setup with the external HDMI devices.
Is TMDS signal input into pin ((13,14)/( RR2X0), (15,16)/( RR2X1),
(17,18)/( RR2X2), (11,12)/( RR2XC)) of IC U501?
Check the line between IC U501 and CN504.
NO
Is TMDS signal output from pin ((56/57/58/59/60/61/62/63)/(RX1) of
IC U502?
Check IC U502 and peripheral circuits.
NO
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN501) normal?
NO
Check the line between pin (45) of IC U502 and CN501.
Refer to “ The picture doesn't appear in all modes. ”
Check the connection and setup with the external HDMI devices.
Is TMDS signal input into pin ((21,22)/( RR3X0), (23,24)/( RR3X1),
(25,26)/( RR1X2), (19,20)/( RR1XC)) of IC U502?
Check the line between IC U502 and CN501.
NO
Is TMDS signal output from pin ((56/57/58/59/60/61/62/63)/(RX1) of
IC U502?
Check IC U502 and peripheral circuits.
NO