867B,863
Service Manual
3-4
Note
Modern electronic components are sensitive to static voltages under 100V.
You can develop a charge of 2,000V by walking across a vinyl tile floor or
a charge of 5,000 to 15,000V when polyester clothing moves on your body.
Since 30,000 to 40,000V must be generated before you will feel a shock,
you will not notice these lower voltage static problems that are so harmful
to electronic components. Protection circuits used with these components
can only reduce, not eliminate, susceptibility to ESD. You can cause
degraded performance or failure by touching a sensitive assembly or by
simply exposing the component to the electric field surrounding a charged
object. Component failure from ESD may not occur until two hours to six
months after the initial damage.
Cleaning
3-4.
Warning
To avoid electrical shock or damage to the GMM, never allow
water inside the case. To avoid damaging the GMM’s housing,
never apply solvents.
Wipe the GMM with a cloth that is lightly dampened with water or a mild detergent. Do
not use aromatic hydrocarbons, chlorinated solvents, or methanol-based fluids when you
wipe the GMM.
Disassembly
3-5.
Refer to Figure 3-1 throughout this procedure.
1.
Set the GMM selector to OFF. Be sure to leave the selector in this position
throughout the disassembly and reassembly procedure. Note that you do not need to
remove the bail and battery pack to disassemble the GMM.
Note
The low energy fuse (440 mA) can be replaced by removing the battery pack
only.
2.
Remove the six (torqued) screws attaching the case halves. Detach the case halves.
3.
Remove the two screws securing the shield. Then pry the shield loose from two
stanchions at the top of the circuit board.
4.
Gently pull up on the shield tab and rotate the entire shield away from the circuit
board.
5.
Remove the three screws securing the circuit board to the front half of the GMM.
6.
Dislodge the circuit board by pushing in on the Volts-Ohms input connector from the
lower right front of the GMM. See Detail A.
7.
Lift the entire circuit board up approximately one inch, dislodging the slotted Battery
Eliminator connection (Detail B.)
8.
Rotate the circuit board 180 degrees.
Summary of Contents for 863
Page 49: ...Maintenance Disassembly 3 3 5 OFF 1 6 Places 4 5 5 3 3 2 os5f eps Figure 3 1 Disassembly ...
Page 50: ...867B 863 Service Manual 3 6 os6f eps Figure 3 1 Disassembly cont ...
Page 52: ...867B 863 Service Manual 3 8 5 1 6 2 3 4 os30f eps Figure 3 2 Reassembly ...
Page 96: ...6 1 Chapter 6 Schematic Diagrams Title Page 6 1 A1 Main PCA Assembly 6 3 ...
Page 98: ...867B 863 Service Manual 6 4 FLUKE 867 1001 Sheet 2 of 5 Figure 6 1 A1 Main PCA cont ...
Page 99: ...Schematic Diagrams 6 6 5 FLUKE 867 1001 Sheet 3 of 5 Figure 6 1 A1 Main PCA cont ...
Page 100: ...867B 863 Service Manual 6 6 FLUKE 867 1001 Sheet 4 of 5 Figure 6 1 A1 Main PCA cont ...
Page 101: ...Schematic Diagrams 6 6 7 FLUKE 867 1001 Sheet 5 of 5 Figure 6 1 A1 Main PCA cont ...