HP 5890 SERIES II Service Manual page 175

THE TEMPERATURE SENSOR (SMALL CERAMIC BEAD) IS VERY FRAGILE AND
MUST BE HANDLED CAREFULLY.
19. Insert the new sensor through the opening in the rear of the oven.
20. Position the new sensor cartridge at the same location as the original and secure it by tighten-
ing the retainer clamp.
WHEN DISCONNECTING A PLUG, PULL ON
THE PLUG NOT ON ITS WIRES. PULLING ON
THE WIRES MAY CAUSE BREAKAGE.
21. Disconnect connector P7 from its receptacle on
the main PCB by pulling it straight off. (Heated
zones corresponding to sensor lead locations
are labeled to the right of the P7 connector re-
ceptacle on the main PCB.)
22. Use the lance release tip of an AMP pin extrac-
tion/lance reset tool (8710- 1542) to remove the
appropriate pins from connector P7. (The tool
features a lance release tip and a lance reset
tip. The lance release tip is used to depress
the pin locking lance to extract the pin from a
connector. The lance reset tip positions a lock-
ing lance to its proper height to ensure reten-
tion of the pin in the connector.)
LANCE
RELEASE
TIP
LOCKING
LANCE
CAVITY
BACK OF
HOUSING
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TOOL STOP
INSERT TIP
HERE
(BACK OF
CAVITY)
CONTACT
(TYPICAL)
SVC 5- 13
1 2 OVEN
3 4 DETA
5 6 DETB
7 8 INJA
9 10 INJB
11 12 AUX
13 14 FAN+-
P 7
Q6
EXTRACTION
LANCE RESET
TOOL
DASH NUMBER
LANCE
MARKED HERE
RESET TIP
P7
C10
C9
Q3
TOOL
STOP
LANCE
RELEASE
TIP