Overall Troubleshooting (sheet 3)

D

From Sheet 3

 

Turn off the supply and remove the short from the output. Turn on and program output voltage and current to full scale and the OV to zero using front panel keys. Check that the supply goes into OV condition (OV Prot annunciator on and output at 0)

Did OV occur?

No

Yes

Go to "OV Will Not Fire" Troubleshooting

Turn off the supply and connect a GPIB controller to the supply. Turn on the supply and using the controller, program the supply to full scale voltage and current. Check that the supply accepts the commands and can be programmed down rapidly.

 

 

 

 

 

 

 

 

 

1. Check GPIB cable

 

 

 

 

 

 

 

 

 

Does supply accept

 

No

 

2. Check A2J115, J117 and J120

 

 

Check operation of the Digital Control Port

commands ?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(See Appendix A of the Operating manual),

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Serial Link (See Chapter 4 in Operating

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

manual) and the front panel voltage/current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

rotary controls (See Chapter 5 in the Operating

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

manual).

Down Programming

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check Primary Interface A2

 

 

 

 

Digital Control Port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U113, U114, U118.

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

?

Go to "Slow Down Programming"

troubleshooting Fig. 3-15

Yes

Serial Link

Check A2U109, U114. No

OK

?

Yes

Check Voltage and Current

No Rotary Controls OK

controls (A3G1 & G2).

?

Yes

No problem found. Perform Verification tests in Chapter 2 to determine if a problem exists

Figure 3-2. Overall Troubleshooting (sheet 3 of 5)

Service Addendum

11

Page 11
Image 11
Agilent Technologies E4350B, E4351B service manual Overall Troubleshooting sheet 3

E4351B, E4350B specifications

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