Agilent Technologies 5071A manual Top-Level Diagnostic Tree Organization, First Power On

Assembly-Level Service

Service

Figure 2-1. Instrument Top View

Option 048: The “Batteries (Hidden behind battery door)”callout is changed to:

48 Vdc Input Terminals and Fuse

Top-Level Diagnostic Tree Organization

Warning Message Diagnostic Tree (Diagnostic Subsection 4)

Option 048: On page 2-15, item number “1.4.4 Power Source is Batt” is deleted and item “1.4.4.1” is changed to 1.4.4.

Top-Level Diagnostic Tree (Diagnostic Section 1)

1.0.0First Power On

Option 048: Step 3 text is changed:

Ensure that the rear-panel dc-line fuse holder has a good fuse of the correct rating.

Step 6 text is changed:

Power on the 5071A by applying dc or ac power.

The If No response to the QUESTION: is changed:

Disconnect power immediately and check the appropriate rear-panel power fuse.

If fuse is intact, Go to, 1.0.1.1.0.

If fuse is blown, Go to, 2. 1. 1. 1. 0 (Power Supply Diagnostic Tree.)

Step 1. 0. 1. 1. 0 is added below:

1.0.1.1.0 DC Input 1 and 2 Power Steering Circuit Check

Use the DC Input 1 and 2 Power Steering Circuit Schematic (Figure 2-1.) located on page 17 of this chapter to troubleshoot the dc power input steering function.

QUESTION: Is the DC input power steering circuit functional? (48V Subpanel Assembly, Option 048)

If Yes: Go to, 1. 0. 1. 1.

If No: Replace the 48V Subpanel Assembly, (part number 05071-60277) and retest.

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