Agilent Technologies 6683A, 6684A Reading the Tables, Assembly See, Part Reference Designators

5

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:

	Assembly	See
Main chassis *		Table 5-3
A1	Front Panel EBoard	Table 5-4
LED Board		Table 5-5
A2	GPIB Board	Table 5-6
A3	FET Board	Table 5-7
A4 AC Input Board		Table 5-8
A5	DC Rail Board	Table 5-9
A6	Bias Board	Table 5-9
A7	Snubber Board	Table 5-11
A8	Fast Sense Board	Table 5-9
A9	Down Programming/Slow Sense Board	Table 5-9
A10 Control Board		Table 5-10

* 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.

Table 5-1. Part Reference Designators

A	assembly
B	blower (fan)
C	capacitor
CR	thyristor/SCR
D	diode
DSP	display (LCD)
F	fuse

Jjack

Krelay

Linductor

Pplug

Qtransistor

Rresistor

RT thermal resistor

SW	switch
T	transformer
TB	terminal block
U	integrated circuit
VR	voltage regulator

Wcable or jumper

Y crystal oscillator

assy	assembly
bd	board
blvl	belleville
gnd	ground
lg	long

Table 5-2. Part Description Abbreviations

M	metric	sq	square
mch	machine	submin	subminiature
mm	millimeter	thk	thick
mtg	mounting	thrd	thread
PCB	pc board	w/	with

w/o	without
xfmr	transformer
xtal	crystal

Replaceable Parts 89