Agilent Technologies 6031A Power Section Troubleshooting, Secondary Processor Signature Table

Table 3-8. Secondary Processor Signature Table

DS(0)	P36U	U4-1	U7-15	U9-15	U11-15
DS(1)	2280	U4-2	U7-14	U9-14	U11-14
DS(2)	4277	U4-3	U7-13	U9-13	U11-13
DS(3)	720F	U4-4	U7-12	U9-12	U11-12
DS(4)	6A31	U4-5	U7-11	U9-11	U11-11
DS(5)	662U	U4-6	U7-10	U9-10	U11-10
DS(6)	6020	U4-7	U7-9	U9-9	U11-9
DS(7)	6327	U4-8	U7-8	U9-8	U11-8
DS(8)	1377	U4-39	U7-7	U9-7	U11-7	U2-16
DS(9)	FF99	U4-38	U7-6	U9-6	U11-6	U2-17
DS(10)	236P	U4-37	U7-5	U9-5	U11-5	U2-18
DS(11)	H495	U4-36	U7-4	U9-4	U11-4	U2-19
WR*	9FU7	U4-12	U7-17
WR*	9FF7	U4-13		U9-17
WR*	9FHU	U4-14			U11-17
	F817	U4-26				U20-1
	36U7	U4-27				U20-16
	0562	U4-28				U20-15
ISTX	9F97	U4-11				U2-4, 14
	9FH6	U4-17				U2-2
	9FH5	U4-16				U2-11
ALE	0000	U4-30				U2-1
	AU68	U4-35
+ 5V	9FA8	U4-33,34

Power Section Troubleshooting

Table 3-9 describes the signals at each of the control board test points. The test connector provided in service kit P/N

5060-2865 allows easy connection to each test point. The measurements given here include bias and reference voltages as well as power supply status signals. It provides conditions for these measurements and gives the components which are the sources of the signals. Tables 3-10 and 3-11 describe possible symptoms in the power section. Both give lists of circuit blocks or components which can cause the symptoms shown. The appropriate assembly is also given.

If the supply exhibits a symptom given in Table 3-10 or 3-11, go to the block which pertains to that symptom. If the exact symptom seen is not in the tables, start with the symptom that seems to be closest to the one observed. The blocks are given in the Power Section Blocks section starting in Paragraph 3-84. Troubleshooting information for each block will include a brief description of the circuit. The columns provided are as follows:

NODE:	This column lists the nodes where the measurements should be taken. In some cases this will be
	stated as NODE( + ) and NODE(-) where the first is the test node and the second is the reference.
SETUP:	If a certain setup is required for the measurement, it will be given in this column.
MEASUREMENT:	This column indicates what the expected measurement is for the given node.
SOURCE:	If applicable, the components which generate the signal will be provided in this column.

51