HP 750 - Manual (Page 145)

Troubleshooting C4705-90000 8-27
7. Carriage
The purpose of this test is to checkthe internal circuits of the carriage PCA.
Perform the carriage test as follows:
1 In the Service Tests submenu, scroll to 7 Carriage" and press Enter.
SERVICE TESTS
7 Carriage
2 The following messages, in the order listed, are displayed on the frontĆpanel as each
circuit is tested.
1 Testing CPROC COMM"
2 Testing SCONDOR"
3 Testing ATOD Converters"
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 carriage fails the test, try replacing one of the following components:
1 Carriage assembly ' page 6Ć34.
2 Main PCA ' page 6Ć9.
3 Trailing cable ' page 6Ć36.
Only replace one component at a time and perform the Carriage" test again before
replacing another component. Using this procedure you will be able to determine
exactly which component failed.