As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCP N1 BUTTON DOES NOT ILLUMINATE. ACFT GROUNDED. CONFIRMED N1 BUTTON LIGHT DOES NOT ILLUMINATE WHEN PRESSED. ACCOMPLISHED ALT DEACTIVATION IAW CHAPTER 5, TABLE 3, ITEM 1. REMOVED AND REPLACED MODE CONTROL PANEL IAW AMM 22-11-34-401. ACCOMPLISHED OPS TESTS, OPS TESTED NORMAL. ACCOMPLISHED LAND VERIFY TEST 49. ALL REQUIRED TESTS PASSED.