Maintenance and Troubleshooting | 5-23
Example:
If replacing Lamp 1, and the filter location with the highest lamp pulse
current-control value is Filter 3, the PMT signal for Filter 3 is displayed
by pressing F6 1 3.
If either the Measure or Reference PMT signal becomes equal to or
greater than 10.000 V at any time during lamp alignment, decrease
the PMT level (CFGF1 4 to view PmtLvl screen) in one-volt incre-
ments until it reaches a stable level. Allow the signals to stabilize and
continue.
13. Slightly loosen the Lamp Clamping Screw. Loosen the Lamp Retaining
Screw and rotate the Lamp Retaining Bracket 90 degrees.
14. Slowly rotate the new lamp to obtain the maximum signal from the
Measure PMT. Since the User Interface is updated at one-second inter-
vals, use slow, small movements, pausing each turn to view the new
value.
Because the Automatic Lamp Control (Alc Enable function) is turned
Off, the displayed signal may not be perfectly steady.
15. Loosen the Locking Screw between the two lamps.
16. To obtain the maximum signal from the Measure PMT, adjust the Lamp
Adjusting Screw for the lamp being replaced.
17. To replace the second lamp repeat Steps 9–16.
18. Tighten the Locking Screw located between the two source lamps.
19. Return the Lamp Retaining Bracket to its original position and tighten
the Lamp Retaining Screw. Tighten the Lamp Clamping Screw to se-
cure the lamps. Do not overtighten these screws; the springs should
not be collapsed.
NOTE
!
CAUTION
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