3-7. Error Code H1-05 failure detection procedure
Checking device. [IC351 : ADV7180]
Checking the reset waveform. (VIDEO DECODER)
Check item(3-7.1.). Checking the reset waveform :
Check the waveform.
Is the "TP13" waveform of the TP near the VIDEO DECODER
[IC351] correct (like the one shown in the diagram) when the
power is turned on?
VIDEO DECODER
IC351
TP13
Check the reset circuit between
CPU [IC151] and VIDEO DECODER
[IC351].
If there is no problem, the VIDEO
DECODER [IC351] is faulty.
Replace with a new device.
Recheck from check item (3-7.1.)
If it does not work, replace the
PCB.
NO
Examples of conî™°rmation waveform
Voltage scale : 1.0V/div
Time scale : 20ms/div
check item (3.1.) again after replacing [R3537/R3538] with a new
resistor.
If there is still a problem, the VIDEO DECODER [IC351] is faulty.
Replace with a new device.
Recheck from check item (3.1.)
If it does not work, replace the PCB.
YES
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
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