Welch Allyn Atlas Service Manual page 45

Section 3 - Troubleshooting
Press <DATE/TIME>
Get date/time menu
Verify date/time, set if necessary.
If date was significantly wrong, goto Date 1
Press <TREND> to return to idle screen
Press <DATE/TIME><LEAD SELECT>
Get Service Mode menu
Examine version/configuration data in lower half of menu,
and write it all down
Press <SELECT> to highlight Reset to factory defaults
Press <BP START/CANCEL> to reset configuration
Press <TREND> to return to idle screen
Press <DATE/TIME><TREND>
Get Advanced Configuration menu
Set language to your native tongue if necessary
We have just reset to factory defaults. Compare settings
to factory defaults appropriate for the country – in Operator
manual if not here too.
If not matching, goto NVRAM 1
Press <TREND> to return to idle screen
Compare version numbers from Test Setup 3 to table in
Service Guide
Press <DATE/TIME><LEAD SELECT>
Get Service Mode menu
Press <SELECT> to highlight CRT Test pattern
Note screen alignment
If misaligned, mechanical adjustment required on
disassembled unit
Press <TREND> to return to idle screen
If no display at all on CRT:
Check connections:
CRT to Yoke cable
CRT to Anode cable
CRT to Deflection board
Deflection board to Main board cable
Replace CRT
Replace Deflection board
Replace Main board
SERVICE MANUAL 6200-43E REV. A
3.4 Diagnostic Tests
Test Setup 2
Test Setup 3
Test Setup 4
CRT 1
CRT 2
WELCH ALLYN ATLAS MONITOR 19