HP 5890 SERIES II Service Manual page 292

When disconnecting a plug, pull on the plug not on its wires. Pulling on the wires may
cause breakage.
8. Disconnect connector
P10 from its receptacle
on the main PCB by
squeezing its ribbed
sides while pulling the
plug straight out of the
receptacle.
9. Disconnect connectors
J26 and J27 from their
respective receptacles
on the AC power sup-
ply PCB. (Remove
each one by squeezing
its ribbed sides while si-
multaneously pulling it
out of the receptacle.)
10. Remove the screw and
lock washer securing
the ground strap to the
transformer bracket.
SCREW, INSULATOR
BUSHING
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CONNECTOR P10
CONNECTOR J27
CONNECTOR J26
SVC 11- 6
GROUND STRAP