Calibrator
Access Procedure
87
Access Procedure
The access procedures supplied here are for those who must replace a defective
module only. Fluke Calibration does not recommend that the user repair the
boards to the component level.
WCaution
To avoid damage to the Product, do not touch the circuit
boards. Subtle long-term stability problems can result.
Use the procedures in this section to remove:
• Analog modules: Voltage (A8), Current (A7), DDS (A6), and Synthesized
Impedance (A5)
• Rear-panel module (main CPU (A9), transformer and ac line input
components)
• Filter PCA (A12)
• Encoder/Display (A2)
• Keypad
Analog Modules
To remove the Voltage (A8), Current (A7), DDS (A6), or Synthesized Impedance
(A5) modules, see Figure 26:
1. Remove the Phillips screws from the top cover including two from rear, four
from sides, and six from bottom.
2. Remove the top cover.
3. Remove the eight Phillips screws from the guard box cover. The locations of
the analog modules are printed on the guard box cover.
4. Use the finger pull on the left-rear of the cover to lift off the guard box cover.
5. For the Impedance (A5) module, remove the bottom cover. See steps 3-4 of
the Rear-Panel Assemblies section. With the bottom side up, unclasp the
cable clamp and detach the red and black wire connectors.
6. For the Voltage (A8) module, with top side up, disconnect the three multi-wire
connectors at top of the board and remove the wires from the plastic wire
guide.
7. With the top side up, release the board edge locks on the analog module to
be removed.
8. Lift the board out of its socket in the Motherboard. Put the board shield side
down.
9. To remove the shield, remove the Phillips screw at the center of the shield
and then pull the sides of the shield away from the board.
10. To install the shield, first align one set of tabs and then push the other side
into position.
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