Sharp AQUOS LC-42SB45U, Service Manual

Page: 38 / 110

LC-42SB45U
38
↓ YES
<External input HDMI1 input 4 >No picture on the display (7)
↓
Does not the picture of the HDMI signal input to HDMI1 go out?
MINI AV_UNIT:
↓
↓
YES
↓ NO
YES
↓ YES
<External input HDMI2 input 5 >No picture on the display (8)
↓
Does not the picture of the HDMI signal input to HDMI2 go out?
MINI AV_UNIT:
↓
↓
YES
↓ NO
YES
↓ YES
<External input HDMI3 input 6 >No picture on the display (9)
↓
Does not the picture of the HDMI signal input to HDMI3 go out?
Refer to
“
The picture doesn't appear in all modes.
”
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN702) normal?
NO
Check the line between pin (AE1) of IC U400 and CN702.
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 U708 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), pin (16) of a HDMI
terminal(CN702)?
NO
Is access possible in the re-writing or exchange of EDID data of
IC U708?
Check CN702, IC U708 and peripheral circuits.
Is TMDS signal input into pin (AF7, AE7)/RX2
±
, (AF6, AE6)/RX1
±
,
(AF5, AE5)/RX0
±
, (AF4, AE4)/RXC
±
of IC U400?
Check the line between IC U400 and CN702.
NO
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN700) normal?
NO
Check the line between pin (B20) of IC U400 and CN700.
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 U701 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), (16) of a HDMI
terminal(CN700)?
NO
Is access possible in the re-writing or exchange of EDID data of
IC U701?
Check CN700, IC U701 and peripheral circuits.
Is TMDS signal input into pin (AF11, AE11)/RX2
±
, (AF10,
AE10)/RX1
±
, (AF9, AE9)/RX0
±
, (AF8, AE8)/RXC
±
of IC U400?
Check the line between IC U400 and CN700. NO