Step 1 Check the AC line for proper voltage. Does the AC line have proper voltage? | Go to step 3. | Go to step 2. |
Step 2 Use an electrical outlet that has proper voltage. Does the problem remain? | Go to step 3. | The problem is solved. |
Step 3 Check the power cord for damage, and replace if necessary. Does the problem remain? | Go to step 4. | The problem is solved. |
Step 4 Check the cable on the LVPS and on the JLVPS connector on the controller board for proper connection. Is the cable properly connected at both ends? | Go to step 6. | Go to step 5. |
Step 5 Reconnect the cable. Does the problem remain? | Go to step 6. | The problem is solved. |
Step 6 Check the cable for continuity. Does the cable have continuity? | Go to step 8. | Go to step 7. |
Step 7 Replace the cable. Does the problem remain? | Go to step 8. | The problem is solved. |
Step 8 Measure the values of pin 4, 6, 8, and 11 to 26 of the JLVPS connector on the controller board. See Controller board connectors. Are the values approximately correct? | Go to step 10. | Go to step 9. |
Step 9 Replace the LVPS. See LVPS removal. Does the problem remain? | Go to step 10. | The problem is solved. |
Step 10 Replace the controller board. See Controller board removal. Does the problem remain? | Contact the next level of support. | The problem is solved. |