Figure 7-9. Replacing The Pmt Hvps; Pmt Voltage Adjustment - Thermo Scientific 42i Instruction Manual

PMT Voltage
Adjustment
Thermo Fisher Scientific
5. Remove the four screws securing the power supply to the bracket and
remove the power supply.
Input Box Assembly
Figure 7–9. Replacing the PMT HVPS
6. To install the power supply, follow the previous steps in reverse.
7. Recalibrate the instrument. Refer to the calibration procedures in the
"Calibration" chapter.
Use the following procedure to adjust the PMT voltage after switching
from standard to extended ranges or vice versa.
WARNING The service procedures in this manual are restricted to qualified
service representatives.
1. Select the NO, NO
"Operation" chapter.
Assembly Bracket
Input Box Screws (2)
Assembly Bracket Screws (2)
▲
, and NO ranges. Refer to "Range Menu" in the
2 x
Model 42i Trace Level Instruction Manual
Servicing

PMT Voltage Adjustment

HVPS
7-19