Sharp AQUOS LC-26D43U, Service Manual

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35
LC-26D43U
TROUBLESHOOTING TABLE
(Continued)
No video output from HDMI input (INPUT5)
No
Yes Yes
Is IC1502 (E
2
PROM) accessed with 12C when connecting
HDMI device and is DDC_12C_CLOCK/DATA data read
out?
Are signals fed from HDMI (SC1502) connector to input
terminals H_RX0±(pins 8 and 9),H_RX1±(pins 11 and
12),H_RX2±(pins 14 and 15) and H_RXC±(pins 5 and 6) of
IC1507 (TMDS_SW)?
Are signals fed from IC1507 (TMDS_SW) to input
terminals H_RX0±(pins B19 and A19),H_RX1±(pins A18
and B18),H_RX2±(pins D18 and C18) and H_RXC±(pins
C19 and D19) of IC8101?
Yes
Check IC1507 (TMDS_SW) and peripheral circuits.
For INPUT5,pin 21 is High.
Check LCD_CONTROL PWB.
Check IC1502 and peripheral circuits.
Are cables connected securely?
No
Yes
Are digital video (LVDS) signals sent from pins 37-42 and
45-48 of IC2602?
Check IC2602 and peripheral circuits.
No
Are digital video (COMOS) signal sent from IC8101
(DVODATA 0-23,DVOCLKO,DVODE,DVOHSYHC,
DVOVSYNC)?
Check IC8101 and peripheral circuits.
No
Check the setting of HDMI device.
When using an old HDMI transmission device,some video formats cannot be selected or no sound is heard. Since this model
conforms to the latest HDMI standard, the HDMI transmission device does not recognize the data of the latest version
correctly.It is necessary to upgrade its firmware. Download the latest firmware from the web site of each manufacturer,or
contact the customer service center of each manufacturer.