Analog Test Failure Troubleshooting In The Internal Test - Agilent Technologies E4991A Service Manual

Analog Test Failure Troubleshooting in the Internal Test

When "Analog Test: Fail" is displayed in the internal test, replace the faulty assembly as
shown in Table 4-1. The contents of the analog test is as follows;
Table 4-1 Troubleshooting Information for Analog Test Failure
Test First Failed Test
No.
1 DC_A1_P9V
+9V on A1
2 DC_A1_N9V -9V on A1
3 DC_A1_P5VRF1 +5V for RF1 on A1
4 DC_A1_P5VRF2
+5V for RF2 on A1
5 DC_A1_P5V +5V on A1
6 DC_A3_P5VPLL +5V for PLL on A3
7 DC_A3_P10V -10V on A3
8 DC_A3_N5V -5V on A3
9 DC_A3_N10VPLL
-10V on A3
10 DC_A3_OUTDET
Detect Level of RFOUT AGC on A3
11 DC_A3_LODET Detect Level of Local AGC on A3
12 DC_A4_P10V +10.5V on A4
13 DC_A4_P5V +5V on A4
14 DC_A4_P8VA +8V for CH1 on A4
15 DC_A4_P8VB +8V for CH2 on A4
16 DC_A4_N10_5V
-10.5V on A4
17 DC_A4_N5V
-5V on A4
18 DC_A4_LODET Detect Level of Local AGC on A4
19 A2_STAT Status of A2
20 DC_A2_P50V +50V on A2
21 DC_A2_N50V -50V on A2
22 DC_A2_P5VREF +5V for Reference on A2
23 FREQ_A1_VCO1 VCO Output for RF1 on A1
24 FREQ_A1_REF1 PLL Reference for RF1 on A1
25 FREQ_A1_VCO2
VCO Output for RF2 on A1
26 FREQ_A1_REF2
PLL Reference for RF2 on A1
Chapter 4
Test Point
A1 Ref
OSC
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Troubleshooting Using Internal Test
Probable Faulty Assembly
A3 A4 A2 DC
Source Receiver Bias(001)
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Troubleshooting
A5 Freq A6 Test
Ref(1D5) Head
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