Replaceable Parts; Introduction; Chapter Organization; Reading The Tables - Agilent Technologies 668xA Service Manual

Replaceable Parts

INTRODUCTION

Chapter Organization

This section lists the replaceable electrical and mechanical parts for the Agilent 668xA series power supplies. (Component
location diagrams are located in Chapter 6.) The lists consist of tables organized by assemblies as follows:
Main chassis *
A1 Front Panel EBoard
A2 GPIB Board
A3 FET Board
A4 AC Input Board
A5 DC Rail Board
A6 Bias Board
A7 Snubber Board
A8 Fast Sense Board
A9 Down Programming/Slow Sense Board
A10 Control Board
* The locations of circuit board assemblies and chassis-mounted components are shown in Fig 3-20.

Reading the Tables

Each table lists electrical components alphabetically by reference designator and provides the Agilent part number followed
by the part description. Mechanical parts are placed after the electrical parts and listed alphabetically by part description.
Unless otherwise specified, a listed part is used in all models of the series. Model-specific parts are tabulated by model
number under the reference designator. The reference designators are defined in Table 5-1. Abbreviations used in parts
descriptions are explained in Table 5-2.
A assembly
B blower (fan)
C capacitor
CR thyristor/SCR
D diode
DSP display (LCD)
F fuse
assy assembly
bd board
blvl belleville
gnd ground
lg long
Assembly
Table 5-1. Part Reference Designators
J jack
K relay
L inductor
P plug
Q transistor
R resistor
RT thermal resistor
Table 5-2. Part Description Abbreviations
M metric
mch machine
mm millimeter
mtg mounting
PCB pc board
Table 5-3
Table 5-4
Table 5-6
Table 5-7
Table 5-8
Table 5-9
Table 5-9
Table 5-11
Table 5-9
Table 5-9
Table 5-10
SW
T
TB
U
VR
W
Y
sq square
submin subminiature
thk thick
thrd thread
w/ with
See
switch
transformer
terminal block
integrated circuit
voltage regulator
cable or jumper
crystal oscillator
w/o without
xfmr transformer
xtal crystal
Replaceable Parts 89
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