As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VERTICAL SPEED WINDOW ON MCP HAS MARKS ON IT WHEN IT SHOULD BE BLANKED. GROUNDED - YES. REMOVED AND REPLACED DFCS MODE CONTROL PANEL PER B737-900 AMM 22-11-34, PERFORMED INSTALLATION TEST, NO FAULTS NOTED. PERFORMED LAND VERIFY PER AMM 22-11-00 TEST GROUP 49 NO FAULTS NOTED, PERFORMED DFCS LRU TEST FOR MODE CONTROL PANEL PER AMM 22-11-34 TEST GROUP 32 NO FAULTS NOTED. THIS CLEARS MEL 22-16I.