YES
Checking the reset waveform. (HDMI Switcher2)
Check item(29).
Checking the reset waveform :
Check the waveform.
Is the "
TP19
" waveform of the TP near the HDMI Switcher2 (
IC381
)
correct (like the one shown in the diagram) when the power is
turned on?
IC381
TP19
Check the reset circuit between
CPU (
IC151
) and HDMI Switcher2
(
IC381
).
If there is no problem, the HDMI
Switcher2 (
IC381
) is faulty.
Replace with a new device.
Recheck from
check item (4)
.
If it does not work, replace the
PCB.
NO
Examples of confirmation waveform
Recheck from
check item (4).
If it does not work, replace the PCB.
Replace (
R3812/R3814
) with new resistors and check the I2C
communication again.
Check item (26)
If the result is not OK, the HDMI Switcher2 (
IC381
)
is faulty.
Replace with a new device.
106
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
