Check item(33). Check the SPI communication line :
Check the CPU.
Is the "SPI" waveform of the TP near the DSP [U1073] correct (like
the one shown in the diagram) when the power is turned on?
U1073
3 pin CLK
4 pin MOSI
6 pin CS
5 pin MISO
Check item(34). Check the SPI communication line :
Check DSP [U1073] and CPU [U1018] patterns as well as soldering.
If there is no problem, go to the next step.
Check the SPI communication line.
The DSP [U1073] is faulty.
Replace with a new device.
YES
*The diagram shows an example.
(Signal patterns vary depending on the
timing.)
Points for checking waveforms
- Crest value (3.3 V normally)
- Signal change
- CLOCK frequency (about 6 MHz)
Voltage scale：2.0V/div
Time scale：2us/div
NOYES
Recheck from check item (1).
If it does not work, replace the PCB.
101
Caution in
servicing
Electrical Mechanical Repair Information Updating
To Next Page
Loading...
Need help?
General
