What was found
EICAS MESSAGE. LT ENGINE BLEED OFF AND BLEED LIGHT ILLUMINATED. REMOVED AND REPLACED TEMP SENSOR FAN MODULATING VALVE. IAW AMM 36-11-17 PG 401 TEST SATISFACTORY. CABIN ALT AND CABIN ALTITUDE LIGHTS ILLUMINATE EICAS MSG CABIN ALTITUDE WAS UNABLE TO RESTORE. CABIN PRESS USING MANUAL MODE. P/N 773284-6 S/N 900210. CABIN PRESS CONTROLLER BITE PERFORMED, IAW FIM 21-30-00/101 FIG 104 IT WAS FOUND CONTROLLER FAULT. REMOVED AND REPLACED THE 2 CABIN PRESS CONTROLLER, IAW AMM 21-31-02 P 401 OPERATIONALS CHECKS SATISFACTORY.P/N 2117388-6, S/N 10-1976 AND S/N 18-1346