Ac Module - HP 9020 Service Manual

Ac Module
Assembly Access
4-59
WARNING
AFTER REPLACING THE AC MODULE, PERFORM CONTINUITY
TEST BETWEEN POWER CORD GROUND AND METAL CHASSIS.
RECORD RESULTS ON REPAIR ORDER.
1. UNPLUG COMPUTER POWER CORD FROM AC OUTLET.
2. Remove front and rear covers as previously described.
3. Disconnect power supply cable and safety ground cable from ac module (Figure 4-61).
SAFETY GROUND CABLE #2 POZIDRIV SCREW
POWER SUPPLY CABLE
AC MODULE
Figure 4-61. Releasing Ac Module
CAUTION
DO NOT LIFT AC MODULE UNTIL RIBBON CABLES HAVE BEEN
DISCONNECTED FROM 110 BACKPLANE AS DESCRIBED IN THE
NEXT TWO STEPS.