66
YES
YES
YES
(20) Check xtal oscillator.
Is there 28.6363MHz oscillation of X7201?
(21) Check RESET.
Is RESET waveform conrmed at IC721 (97pin)? (If reference
waveform, proceed to "YES".)
HDMI output circuitry is defective (IC721 and surrounding circuitry).
Replace the IC721.
(22) Check control signal(I2C).
Is waveform conrmed at Test point (SDA/SCL). (If not continued
to " L", proceed to "YES".)
The X7201 or IC721 is defective.
Replace the new parts.
The RESET pattern or IC721 is defective.
Replace the new parts.
The SDATA/SCL line pattern is defective.
NO
NO
NO
YES
(19) Check power supply.
Are 1.8V or 3.3V supplied to IC721 (each power supply pin)?
The power supply circuitry is defective.
NO
(*1) Abnormal sample of HDMI connector : The internal terminal has bent.
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