What was found
WINDOW HEAT L SIDE INOP LIGHT ON. ASSOCIATED MTNC MSG 30-220 22. FAILED MAT TEST. LT NR 2 SIDE WINDOW. TRIED CONTROLLER, NO HELP. MESSAGE SHOWED HEATER CIRCUIT OPEN OR SHORTED. SLAVED IN NEW 2L SLIDING WINDOW. WINDOW HEAT TEST IN MAT PASSES. STARTED REMOVING SLIDING WINDOW 2L IAW MM. COMPLETED THRU STEP 2D.(3) PG 402. CONTINUED REMOVAL AND INSTALLATION OF 2L WINDOW IAW AMM. REQUIRES CONTINUATION TO COMPLETION FOR ACCOMPLISHMENT. COMPLETED 2L SLIDING WINDOW INSTALLATION IAW MM.