3-2. Error Code H1-02 failure detection procedure
Checking device. (HDMI SW)
YES
YES
NO
Checking the reset waveform. (HDMI SW)
Check item(10).
Checking the reset waveform :
Check the waveform.
When the power is turned on, is the TP waveform correct (as
shown in the figure)?
U1024
115 pin
Check the reset circuit between
CPU [
U1013
] and HDMI SW
[
U1024
].
If there is no problem, the HDMI
SW [
U1024
] is faulty.
Replace with a new device.
NO
Examples of confirmation waveform
Voltage scale：1.0V/div
Time scale：20ms/div
Check item(11).
Checking the HDMI SW :
Remove the [
R1974/R1975
].
Is the waveform of "
I2C" the correct waveform?
HDMI SW [
U1024
] is faulty.
Replace with a new device.
Recheck from
check item (1).
If it does not work, replace the PCB.
83
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
