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Chapter 3 Replacing Assemblies
Introduction
3-2 Assembly-Level Service Guide
3
Introduction
This chapter contains the instructions for removing major assemblies in
the HP 53131A/132A/181A. To install an assembly, reverse the removal
instructions.
This chapter provides the following disassembly and reassembly
procedures:
WARNING HAZARDOUS VOLTAGES ARE ON THE POWER SUPPLY
ASSEMBLY. UNPLUG THE INSTRUMENT, THEN WAIT AT
LEAST SIX MINUTES FOR THE CAPACITORS ON THE POWER
SUPPLY ASSEMBLY TO DISCHARGE BEFORE WORKING ON
THIS INSTRUMENT.
CAUTION Do not replace assemblies with the instrument turned on. Damage to
components can occur.
Refer to Chapter 5, “Replaceable Parts,” for the part number of the
assemblies.
• To Remove the Cover page 3-4
• To Remove the Front Bezel page 3-6
• To Remove A1 Motherboard Assembly page 3-9
• To Remove the A2 Display Board, Keypads, and Window page 3-11
• To Remove A3 1.5/3.0/5.0/12.4 GHz Channel Assembly
(Option 015/030/050/124)
page 3-13
• To Remove A4 AC Power Supply Assembly page 3-15
• To Remove A5 DC Power Input Assembly (Option 002) page 3-17
• To Remove A6 High Stability Timebase Assembly
(Options 001, 010, and 012)
page 3-19
• To Remove the Rear Terminals (Option 060) page 3-21