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"
787_RST
" waveform cor-
rect (as shown in the figure)?
IC720
788_RST
Check the reset circuit between
CPU [
IC751
] and HDMI SW [
IC701
].
If there is no problem, the HDMI
SW [
IC701
] 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 [
R7147/R7149
].
Is the waveform of "
I2C
" the correct waveform?
HDMI SW [
IC701
] is faulty.
Replace with a new device.
Recheck from
check item (1).
If it does not work, replace the PCB.
82
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating
Содержание AVR-S730H
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