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Thermo Scientific
Service
Service must be performed by qualified service personnel only!
De-energize all potential sources of energy to this unit and lockout/tagout their
controls.
Remove Software Lockout
1. Press the Advance and Infinity keys at the same time and hold them for about six
seconds. The word "Fcty" (factory) will appear in the bottom display. If numbers in the
bottom display begin to scroll up or down, the keys have not been pressed
simultaneously. Try again.
Lock
Factory
Press
(6 sec)
Figure 13-1 Displays
2. Press the Up Arrow until "LoC" (lock) appears in the upper display. The word "Fcty"
will remain in the lower display (Figure 13-1).
3. Press the Advance key to scroll through the menus as follows:
Lower display
LoC.o
LoC.P
PAS.E
Upper display
1
1
1
Service |
Chapter 13
Keystrokes
Change to 3 = unlocked
No changes required
No changes required
Model 3907 & 3948 | 13-1
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