HP 750 - Manual (Page 143)

Troubleshooting C4705-90000 8-25
5. Main PCA
The purpose of this test is to do an extended functionality check of the internal circuits of the
main PCA which are not involved with any other board.
Perform the main PCA test as follows:
1 In the Service Tests submenu, scroll to 5 Main PCA" and press Enter.
SERVICE TESTS
5 Main PCA
2 The following messages, in the order listed, are displayed on the frontĆpanel as each
component of the main PCA is tested.
1 Testing ROM"
2 Testing PS SIMM" (only if the Postscript SIMM is installed)
3 Testing DRAM"
4 Testing SWATH RAM"
5 Testing RAM SIMM"
6 Testing SIBIS SHUFFLER"
7 Testing EEROM"
3 If the test passes, the Pass Test / Press Enter" message is displayed on the frontĆpanel.
4 If the test fails, an Error Code is displayed on the frontĆpanel.
If the Main PCA fails the test:
1 Save the EEROM values (to be used in the new Main PCA) ' page 8Ć54.
2 Replace the main PCA ' page 6Ć9.
3 Save the EEROM values in the new Main PCA ' page 8Ć54.