85RF Fluke Electronics, 85RF Datasheet - Page 73

• Manufacturer Part Number: 85RF
• Description: PROBE HIGH FREQ 500MHZ
• Manufacturer: Fluke Electronics
• Type: High Frequencyr

Specifications of 85RF

• Impedance: 10M Ohm
• Voltage - Max: 30VRMS, 200VDC
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Ratings: -
• Current Rating: -
• Color: -
• Termination: -
• Wire Insulation Material: -
• Cable Length: -
• Other names: 532457

To disassemble the microcomputer pcb, use the following procedure:
1.
2.
To assemble the microcomputer LCD, refer to Figure 4-2. Beginning with
item 3, assemble items 3 through 7 (in ascending numerical order). Be sure
to follow the handling precautions for items 4, 5, and 7.
4-9.
Use the following procedure to replace the backup fuse (F2):
1.
2.
3.
4-10. Cleaning
Clean the front panel and case with a damp cloth and mild detergent. Do not
use abrasives, solvents, or alcohol.
Turn the main pcb face down and remove the two small screws at the
top of the pcb to free the microcomputer pcb.
Refer to Figure 4-2. Beginning with item 7, remove items 7 through 3
(leave item 2 attached to item 1). Be sure to observe the handling
precautions for items 7, 5, and 4.
Remove the top cover by following the precautions given previously for
the calibration and backup fuse access.
Use a flat-tipped screwdriver to pry the fuse out of its fuse holder. Pry
the fuse from the side as indicated in Figure 4-1.
Replace the defective backup fuse with a 3A/600V type BBS-3 (Fluke
PN 475004). Refer to section 2-4 for information about replacing fuse
F1 (2A/250V; American style: fast acting type AGX2 1/4 x 1”, Fluke
PN 376582; European style: 5 x 20 mm, Fluke PN 460972).
To avoid electrical shock, remove test leads and any
input signals before cleaning.
Backup Fuse Replacement
Warning
General Information
Maintenance
4-11
4