Replaceable Parts 85
5
Replaceable Parts
INTRODUCTION
Chapter Organization
This section lists the replaceable electrical and mechanical parts for the Agilent 657xA and Agilent 667xA 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 Board (used in all models) Table 5-4
A2 Isolator Board (used in Agilent 657xA models) Table 5-5
A2 GPIB Board (used in Agilent 667xA models) Table 5-6
A3 FET Board (used in all models) Table 5-7
A4 AC Input Board (used in all models) Table 5-8
A5 Control Board (model-specific assembly) Table 5-9
A6 Output Filter (model-specific assembly) Table 5-10
A7 Snubber Board (model-specific assembly) Table 5-11
* The locations of circuit board assemblies and chassis-mounted components are shown
in Figure 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 J jack SW switch
B blower (fan) K relay T transformer
C capacitor L inductor TB terminal block
CR thyristor/SCR P plug U integrated circuit
D diode Q transistor VR voltage regulator
DSP display (LCD) R resistor W cable or jumper
F fuse RT thermal resistor Y crystal oscillator
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