As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCP ALTITUDE WINDOW HAS BURNED IN SEGMENTS. GROUNDED - YES. RMVD AND INSTALLED NEW MCP REF B737-900 AMM 22-11-34. ACCOMPLISHED MCP PNL INSTALL TEST AMM 22-11-34-740-801. ACCOMPLISHED LLM TESTS DFCS LRU REPLACEMENT TEST FOR MCP AMM 22-11-34/501. LAND VERIFY 22-11-00/201. ALL TESTS PASSED.