HP 5890 SERIES II Service Manual page 184

22. Use the lance release tip of an AMP pin extrac-
tion/lance reset tool (8710- 1542) to remove the
appropriate pins (from the old harness) from
connector P8. (The tool features a lance re-
lease tip and a lance reset tip. The lance re-
lease tip is used to depress the pin locking
lance to extract the pin from a connector. The
lance reset tip positions a locking lance to its
proper height to ensure retention of the pin in
the connector.)
23. Prepare the pins corresponding to the replace-
ment stepper motor by adjusting their locking
lances using the lance reset portion of the tool.
24. Insert the pins for the replacement stepper mo-
tor into their appropriate locations in the plug,
making sure the locking lance on each pin
seats into its hole through the side of the plug.
25. Gently pull on the wire to ensure that the pin is
locked in the connector.
TAPER
LANCE
RESET
TIP
RECEPTACLE
BOX (TYPICAL)
26. Insert the plug in its receptacle (P8) on the main PCB. (The plug is keyed and can only be in-
serted one way.)
27. Replace the panels removed at the beginning of this procedure.
28. Connect any gas supplies disconnected in step 4 of this procedure.
29, Restore power to the instrument.
SMALL PARTICLES OF DEBRIS MAY BE BLOWN OUT OF THE OVEN WHEN THE
`
FLAP IS OPEN. USE PROPER EYE PROTECTION WHEN OBSERVING THE OVEN
FLAPS THROUGH THE BACK PANEL.
TO PREVENT POSSIBLE BURNS, AVOID COMING IN CONTACT WITH THE HOT
`
AIR VENTED FROM THE OVEN.
30. Observe the oven flaps through the back panel. The oven flap motor should close the flap as-
sembly completely.
31. Enter an oven temperature setting of 20_C. The oven flap assembly should now open fully.
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EXTRACTION
LANCE RESET
LANCE
RESET TIP
LANCE
RELEASE
LOCKING
LOCKING
LANCE
CAVITY
LOCKING
LANCE
SVC 5- 22
TOOL
DASH NUMBER
MARKED HERE
TOOL STOP
TIP
LANCE
CAVITY
CONTACT
BACK OF
(TYPICAL)
HOUSING
CONTACT
(TYPICAL)
BACK OF
HOUSING
TOOL
STOP
LANCE
RELEASE
TIP
INSERT TIP
HERE
(BACK OF
CAVITY)
LOCKING
LANCE