Mindray DC-68, Service Manual

Page: 275 / 281

Description of Self Test Items C-17
C.1.35
Z1201
Mini CW Board ID Test

Top test item
DSP FPGA and TRA FPGA communication self test (control interface)

Test content
The program reads the signal in the place to decide whether mini CW board is in the place. Then,
read CW board’s ID. SPI interface communication between TRA board and mini CW board works
well if it appears non-0 and non-F.

Analysis to test failure
The drive goes wrong if the test result appears Error .
Mini CW board is not in the place if the information “ Mini CW board is not in the place ” appears or
the circuit is not in the place.
The interconnection between mini CW board and TRA board goes wrong if the test fails.

Suggestion to failure test
Restart the device to perform the self test if the test result appears
Error.
It is necessary to restore
the device (OS+doppler) if Error re-appears.
It is recommended to replace mini CW board if the test result is FAIL .
C.1.36
Z1301
DSP FPGA and 4D&TEE Board
Interconnection Test

Top test item
PC module and DSP FPGA interconnection test

Test content
The program checks 4D probe is not plugged in, and then read the signal in the place to decide
whether 4D&TEE board is in the place, then read 4D&TEE board’s ID. The interconnection
between DSP FPGA and 4D&TEE board works well if it appears non-0 and non-F.

Analysis to test failure
The drive goes wrong if the test result appears Error .
Mini 4D&TEE board is not in the place if the information “4D&TEE board is not in the place”
appears or the circuit is not in the place.
The interconnection between DSP FPGA and 4D&TEE board goes wrong if the test fails.

Suggestion to failure test
Restart the device to perform the self test if the test result appears Error. It is necessary to restore
the device (OS+doppler) if Error re-appears.
It is recommended to replace 4D&TEE board if the test result is FAIL .
C.1.37
Z1302 4D&TEE Board Driver Circuit Test

Top test item
Communication test between DSP FPGA and 4D&TEE board

Test content
Set DA output sine signals of Sin+ drive circuit and Sin- drive circuit. After being magnified, AD
collects the signal to decide the frequency and the amplitude. Set output cosine signals of Cos+