Sharp LC-19S7E-BK Service Manual page 44

LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK
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
(CN1601) normal?
YES
Are EDID data pin (6)(SCL) of IC U1602 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), (16) of a HDMI
terminal(CN1601)?
YES
Is TMDS signal input into pin(RX_A2+, RX_A2-)/D2±_1,(RX_A1+,
RX_A1-)/D1±_1, (RX_A0+, RX_A0-)/D0±_1, (RX_AC+, RX_AC-
)/CLK±_1 of IC U1503?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the PC IN(ANALOG) video signal input to VGA(15pin-D-SUB terminal) go out?
TERMINAL_UNIT:
Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of
VGA (CN1401)?
MAIN_UNIT:
Is R/G/B/H/V signal sent to pin (RIN1)/R, (GIN1)/G, (BIN1)/B,
(HSYNC1)/H, (VSYNC1)/V of IC U4201?
Refer to "The picture doesn't appear in all modes."
<External input HDMI2>No picture on the display (7)
↓
↓
↓YES
<External input VGA>No picture on the display (8)
↓
↓
↓YES
↓YES
NO
Check the line between pin 35 of IC U1503 and CN1601.
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 U1602?
Check CN1601, IC U1602 and peripheral circuits.
NO Check the line between IC U1503 and CN1601.
NO
Check the setting of an external input device that connects of
CN1401.
NO
Check the line between IC U4201and CN1401.
44
↓
↓NO