Replacing A Fuse On The Analog Pcb - Thermo Scientific Ion Trap Series Hardware Manual

Replacing a Fuse on the Analog PCB

Thermo Scientific
3. Replace the analog PCB.
a. Position the new analog PCB so that the six nuts will fit through the board.
b. Use four of the six nuts to reattach the analog PCB to the cover. The last two nuts are
attached after the digital PCB cover is installed.
c. Reinstall the digital PCB and reconnect the digital PCB cable to the analog PCB.
d. Reconnect all the remaining cables to the analog PCB.
4. Restore the mass spectrometer for operation.
a. Replace the covers.
b. Restart the system.
5. Run Tune Diagnostics to verify that your system is operational.
To replace a fuse on the analog PCB, you will need:
• Analog PCB (PN 119590-0021)
• Nut driver, 5.5 mm
• Screwdriver, Phillips #2
1. Prepare the mass spectrometer for maintenance.
a. Prepare a clean work area by covering the area with lint-free cloth.
b. Shut down and vent the mass spectrometer
WARNING - ELECTRICAL SHOCK HAZARD. Unplug the mass spectrometer before
proceeding.
c. Remove the the covers, as described in
2. Locate and replace the defective fuse with a fuse of the same type, voltage, and current
rating, as indicated in
Table 4. Component and Current Rating
Component
Analog PCB
3. Restore the mass spectrometer for operation.
a. Replace the covers.
b. Restart the system.
c. Run Tune diagnostics to verify that your system is operational.
"Removing the Covers"
Table 4.
Fuse Circuit
F1 Ion Source
Heater
Replacing a Fuse on the Analog PCB
("Shutting Down" on page
on page
Type/Voltage/Current
Part Number
Rating
2 A, very fast 76339-0008
microfuse, 125 V
Ion Trap Series Hardware Manual
2
Maintenance
16).
24.
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