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98770 Troubleshooting
4-7
7. Install the 502 board. Do not connect the cable.
a. Pass - Power supply up. Alpha present. convergence close but colors separated. no
b. Fail - Replace the 502 board.
c. Test run (repeat Step 7).
8. Connect the cable on the 502 board.
a. Pass - Power supply up. Normal display. convergence close to normal.
b. Fail - Double check the cable. Replace the 502 board.
c. Test run (repeat Step 8).
9. Install the 511 board.
a. Pass - Power supply up. No change in display.
b. Fail - Replace the 511 board.
c. Test run (repeat Step 9).
10. Install the A32 board.
a. Pass - Power supply up. No change in display.
b. Fail - Replace the A32 board.
c. Test run (repeat Step 10).
11. Install the 98775-66501 board
(if
present).
a. Pass - Power supply up. No change in display.
b. Fail - Replace the 98775-66501 board.
c. Test run (repeat Step 11).
12. Connect the video cable. Assure that the cable keys mate
(if
98775-66501 present).
a. Pass - Power supply up. No change in display.
b. Fail - Replace the cable or the 98775-66501 board.
c. Test run (repeat Step 12).
13. Do complete diagnostics and alignment.
Return to preliminary checks.
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