Agilent Technologies 856290216 service manual Pms Pins 41’ +28

Table 13-1. Wl Power-Cable Connections (continued)

		Signal		A2Jl	A3Jl		A4Jl		A5Jl	A6Jl	A14Jl	A15Jl
				(Pin.9	(pins)		(PW		(Pms)	(Pins)	(Pins)	(Pms)
+5		v		12		39		-	-	39*	-	-
+5	v			11		40		-	-	40*	-	-
+5	v			10		41		-	-	41’	-	-
+5 v				9		42		-	-	42*	-	-
+5 v				8		43		-	-	43*	-	-
+5		v		7		44		-	-	44*	-	-
+28 V				6		45		-	-	45*	-	-
LINE			TRIGGER		-	46		-	-	46*	-	-
+15		v		4		47		-	-	47*	-	-
+15		v		3		48		-	-	48*	-	-
- 1 5		v		2		49		49	-	49*	-	-
- 1 5		v		1		50		50	-	50*	-	-
* Indicates			signal	source.

Troubleshooting Using the TAM

Refer to Chapter 7, “General Troubleshooting,” for information on enabling the TAM for use with the HP 85623 Spectrum Analyzer.

When using automatic fault isolation, the TAM indicates suspected circuits that need to be manually checked. Use Table 13-2 to locate the manual procedure.

Table 13-3 lists assembly test connectors associated with each manual probe troubleshooting test. Figure 13-2 illustrates the location of Al7 test connectors.

Table 13-2. Automatic Fault Isolation References

Suspected Circuit Indicated by Automatic Fault Isolation

Check A2 controller

Check all power supply outputs Check buck regulator

Check buck regulator control circuitry Check high voltage supplies

Check input rectifier

Check intensity adjustments Check kick start/bias circuitry Check low voltage supplies

Manual Procedure to Perform

Blanking signal

Dead power supply (steps 1-5)Dead power supply (steps 22-23)Dead power supply (steps 11-21)High voltage supplies

Dead power supply (steps 6-7)Intensity problems (steps l-4)Dead power supply (steps 8-10)Low voltage supplies

13-4 Display/Power Supply Section