Sharp LC-32A28L, Service Manual

Page: 41 / 118

2008-03-14
LC-32A28L, LC-42A48L
41
<External input HDMI2>No picture on the display (10)
↓
Does not the picture of the HDMI signal input to Input6(HDMI2) go out?
MINI AV_UNIT:
↓
↓
YES
↓ YES
<External input VGA>No picture on the display (12)
↓
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
<External input Input2&3(Component)>No picture on the display (13)
↓
Does not the picture of the component video signal input to Component go out?
TERMINAL_UNIT:
↓
MAIN_UNIT:
↓ YES
↓ YES
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN502) normal?
NO
Check the line between pin (41) of IC U409 and CN502.
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 (18, 17)/RX2
±
, (16, 15)/RX1
±
, (14,
13)/RX0
±
, (12, 11)/RXC
±
of IC U409?
Check the line between IC U409 and CN502.
NO
Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of
VGA (CN107)?
NO
Check the setting of an external input device that connects of
CN107.
Refer to “ The picture doesn't appear in all modes. ”
Is R/G/B/H/V signal sent to pin (52)/R, (50)/G, (48)/B, (47)/H, (46)/V
of IC U401?
NO
Check the line between IC U401 and CN107.
Is Component Y/Pb/Pr signal sent to pin (2)/Y, (4)/Pb, (6)/Pr of
AV1(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 Component Y/Pb/Pr signal sent to pin (54)/Y, (56)/Pb, (57)/Pr of
IC U401?
NO
Check the line between IC U401 and CN103.
Is Component Y/Pb/Pr signal sent to pin (2)/Y, (4)/Pb, (6)/Pr of
AV1(CN104) ? Check the setting of an external input device that connects of
CN104.
NO
Is Component Y/Pb/Pr signal sent to pin (59)/Y, (61)/Pb, (62)/Pr of
IC U401?
Check the line between IC U401 and CN104.
NO