GE HEALTHCARE
D
IRECTION 5305880-100, REVISION 3 LOGIQ™ 100 PRO SERVICE MANUAL
Page 7-4 Section 7-2 - Power On Diagnostics
7-2-1 DAVINCI Board Tests
When this test is selected the following screen will appear.
All Tests
This option is used to run all tests in the menu. Once all the tests are completed, press any key to
exit.
EPROM Checksum Test
The validity of the software residing in the EPROM on the DAVINCI Board is tested by performing
the Checksum test. The word Checksum of the program is computed and its one's compliment is
stored in the EPROM as the last word. In this test the contents of the memory are added word wise
and the computed sum is compared against zero. If the resulting sum is non-zero the test is
reported to have failed.
Read/Write Memory Test
The Read/Write memory on the DAVINCI Board is tested by filling the memory with test patterns
and reading them back and validating the read data. If any of the memory byte does not contain the
expected data it is declared as faulty.
Graphics Memory Test
The overlay or the graphics memory is tested in the same way as Read/Write memory.
Debug Port Test
Internal Loop Back Test - In this test the port is programmed for internal loop back mode so that a
byte transmitted can be received back.
Figure 7-2 DAVINCI Board Tests
1. ALL TESTS
2. EPROM CHECK SUM TEST
3. R/W MEMORY TEST
4. GRAPHICS MEMORY TEST
5. DEBUG PORT TEST
6. GRAPHICS TEST
7. FRAM TEST
8. FLASH MEMORY TEST
9. IMAGE MEMORY TEST
P. MAIN_MENU
DAVINCI BOARD TESTS
State: RELEASE - Document is released and under formal Change Control. Changes are subject to the ECR/ECO Process.
See the GEHC Myworkshop System to determine the status of this document.
Approved Document - 5305880-100TPH_r3.pdf Page 109 of 197
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