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Agilent 59510A: troubleshooting and error codes

The ServiceForge knowledge base holds 5 documented symptoms for the Agilent 59510A, with 10 ranked causes, 17 diagnostic checks with test points and expected values, and 0 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Microprocessor U101 self-test failure

Power-on self-test signal at U101-19 indicates RAM, ROM, timer, or ID configuration failure

Ranked causes

1. RAM failure in U101 (occasional)
2. ROM failure in U101 (occasional)
3. Timer failure in U101 (occasional)
4. ID configuration incorrect or U101 defective (occasional)

First check

Measure power-on self-test signal

Test point: U101-19
Expected: Low level = pass; 250Hz = RAM fail; 500Hz = ROM fail; 1KHz = timer fail; 2KHz = ID fail

3 more checks with pass and fail actions, 5 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

FLT output not responding to INH input

FLT output LED does not illuminate when INH input is asserted, or does not turn off when INH is de-asserted

Ranked causes

1. U108 defective (occasional)
2. U105 defective (occasional)

First check

Connect LED, resistor and external supply to FLT output as shown in Figure 5-4

Test point: J101-7 and 8
Expected: Test circuit ready

3 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Relay K1 or K202 not de-energized on power-up caution

Relays K1 or K202 do not open on power-up when they should be de-energized

Ranked causes

1. Driver output voltage incorrect for K1 (common)
2. Driver output voltage incorrect for K202 (common)

First check

Power up and verify relay K1 state

Test point: K1 contacts
Expected: Contacts open (de-energized)

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Bias supply incorrect high voltage

Measured bias voltages at test points do not match expected values, indicating power supply fault

Ranked causes

1. AC line fuse F1 open (common)

First check

Check AC line fuse F1

Test point: F1
Expected: Fuse intact

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Relay K201 not energized caution

Relay K201 contacts do not close on power-up when they should be energized

Ranked causes

1. Driver output U104-8 not at 0V (common)

First check

Turn on power and verify relay K201 state

Test point: K201 contacts
Expected: Contacts closed (energized)

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.