Check item(21). Check the power supply voltage.
:
Does the power supply voltage of the GUI [U1026]
indicate the appropriate voltage (1.8V, 3.3V)?
The test points are as follows.
U1026
L1046
L1043
1.8V
3.3V
Check item(22). Check the power supply voltage.
:
Check the power supply components [U1069,
Q1063] on the substrate and peripheral pattern.
If there is no problem, remove the GUI [U1026]
from the substrate and measure the voltage at
the test point of check item (21).
Is the voltage correct (1.8 V or 3.3 V)?
Check the power supply voltage.
Checking device. [U1026 : ADV8003]
Go to next page.
3-4. Error Code H1-06 failure detection procedure
NO
The GUI [U1026] is faulty.
Replace with a new device.
Recheck from check item (1).
If it does not work, replace the PCB.
The power supply circuit is faulty.
Replace the PCB.
NOYES
YES
Check item(23). Checking the reset :
Check the CPU.
Is the waveform of the TP near the GUI [U1026] correct (like the one
shown in the diagram) when the power is turned on?
U1026
RESET
Checking the reset waveform.
10ms
10ms 10ms
Example of the waveform to be checked
Voltage scale：1.0V/div
Time scale：20ms/div
Recheck from check item (1).
If it does not work, replace the PCB.
Check the reset circuit between CPU [U1018] and GUI [U1026].
If there is no problem, the GUI [U1026] is faulty.
Replace with a new device.
NOYES
96
Caution in
servicing
Electrical Mechanical Repair Information Updating
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