As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VERTICAL SPEED DIGITAL READOUT IS UNREADABLE. GROUNDED - YES. REMOVED AND REPLACED DFCS MODE CONTROL PANEL REF B737-900 AMM 22-11-34-400-801. OPS CHECK GOOD WITH NO FAULTS FOUND. ACCOMPLISHED DFCS MCP LRU REPLACEMENT TEST, GRP BITE 32, ALL TEST PASSED. ACCOMPLISHED DFCS LAND VERIFY TEST, GROUP BITE 49, ALL TEST PASSED REF AMM 22-11-00/201 AND AMM 22-11-34/501.