What was found
THE AIR COND DOORS LIGHT ILLUMINATED CLIMBING OUT AT 7.5 PSID. THE LIGHT WENT OUT AT 4.0 PSID. FOLLOWED QRH PROCEDURES, RETURNED TO MEMPHIS. RELEASED FOR SERVICE PER MEL/CDL: 52-04-04 CATEGORY: C EXPIRATION: 16APR04 MEL 52-04-04: AIR CONDITIONING DOOR CAUTION LIGHT INOP. VERIFY AND RECORD IN AML/EAML AIR CONDITIONING DOOR IS CLOSED AND LOCKED BY VISUAL INSPECTION PRIOR TO EACH DEPARTURE. VERIFIED DOORS CLOSED AND LOCKED PRIOR TO DEPARTURE. OK TO CONTINUE. MX REMOVED AND REPLACED LEFT AIR COND DOOR WARNING SWITCH P1- 1618. ALSO REPAIRED BROKEN WIRE AT TERMINAL STRIP S3-490. SYS OPS CHECK OK.