LC50/58/65U35T
6 – 11
No video (5)
No video at UHF/VHF and digital broadcast signal reception
Is the specified TV signal selected on the input select menu
screen?
Are there the IF signal at input pins(P6/P7)(TUN_IFN/P) of
IC3303(CPU)?
NO
Check the IF signal line between IC3303 and TU1105, and their
peripheral circuits.
YES
Check the Tuner I2C lines.
TU1105:pin(10)(TUN_SCL), pin(11)(TUN_SDA)
IC3303:pin(E18), pin(F18)
Is the T-CON PWB connected?
V_LOCKN pin(26) of SC3802 become Low if there is no prob-
lem in the connection.
NO
Check the T-CON PWB and harness.
Check IC3303 and SC3802 and their peripheral circuits in Main
PWB.
YES
Are the V-By-One HS signal input to the pin of SC3802?
V_V/-(23/24pin), V_V/-(20/21pin),
V_V/-(17/18pin),
V_V/-(14/15pin), V_V/-(11/12pin),
V_V/-(8/9pin), etc
NO
Check IC3303 and its peripheral circuits.(IC3501/IC3502/IC3503,
etc.)
YES
Check the panel module and harness.
Содержание LC-50U35T
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