ML248xx, ML249xA MM PN: 13000-00164 Rev. K 6-1
Chapter 6 — Removal and Replacement
Procedures
6-1 Introduction
Anritsu strongly recommends that power meter repair be performed by qualified technical personnel only. The
preferred power meter service policy is the replacement of major sub assemblies or complete unit exchange
program.
Always verify the need for a component replacement using the troubleshooting guidelines presented in
Chapter 5. Repair or replacement in the field to a level beyond the subassemblies listed in this chapter is not
recommended. Refer to Section 1-9 in Chapter 1 for a list of replaceable parts mentioned in this chapter.
Contact your nearest Anritsu Customer Service or Sales Center for price and availability information.
6-2 Power Meter Disassembly
This procedure provides instructions for disassembling the complete power meter unit to its main sub
assemblies. When a repair requires an assembly to be replaced, use part or all of the procedure to replace the
defective part.
Tools Required
• Phillips screwdriver
• Slotted screwdriver
• 3/16 nut driver
• 5/16 nut driver
• 9/16 deep socket
Measurement PCB Removal (ML2487/8A)
1. Remove the AC power cord.
2. Remove the six captive screws from the underside of the unit and remove the top cover. Ensure that the
front and rear panels remain firmly in place during this operation.
3. Remove the six screws and washers that mount the measurement PCB to its support standoffs. See
Figure 6-1.
Caution
The procedures in this chapter should be performed by qualified technical personnel only. These
procedures may require access to internal components, and care should be taken to avoid contact
with potentially hazardous voltages or damage from static electricity.
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