What was found
UPON LANDING MASTER CAUTION ENG ILLUMINATED ALONG WITH ENGINE NR 1 REVERSER ON OVERHEAD. NR 1 ENGINE THRUST REVERSER WAS CYCLED SEVERAL TIMES BUT STILL ILLUMINATED. GROUNDED - YES. REPLACED M1766 NR 1 ENGINE AUTOTHROTTLE SWITCH PACK AMM 76-11-07, 11 EA C/B'S OPENED. ACCOMPLISHED SWITCH CHECK AND ADJUSTMENT AMM 76-11-07-400-802, 11 EA C/B'S RESET. A/T SWITCH PACK ASSY TESTS PASS AMM 76-11-07-400-802 (H). 2 EA. NOSE W/W PRESS PANELS REINSTALLED, LEAK TEST GOOD AMM 53-14-01. THRUST REVERSER NORMAL OPERATION TEST PASS AMM 78-31-00-700-801.