Fluke 5500A - Page 107

Maintenance
Diagnostic Testing
4
4-11
1052 (DDE:FR ) A5 12.75 ohm reference fault
Suspect components on the A5 assembly are relay driver ICs U2, U15, U28, U30, and
R30 or Z2.
1053 (DDE:FR ) A5 33.25 ohm reference fault
Suspect components on the A5 assembly are relay driver IC U2 and resistor network Z2.
1054 (DDE:FR ) A5 100 ohm reference fault
Suspect components on the A5 assembly are relay driver IC U2 and resistor network Z2.
1055 (DDE:FR ) A5 325 ohm reference fault
Suspect components on the A5 assembly are relay driver IC U2 and resistor network Z2.
1056 (DDE:FR ) A5 1 kohm reference fault
Suspect components on the A5 assembly are relay driver IC U2 and resistor network Z2.
1057 (DDE:FR ) A5 3.25 kohm reference fault
Suspect components on the A5 assembly are relay driver IC U2 and resistor network Z2.
1058 (DDE:FR ) A5 10 kohm reference fault
Suspect components on the A5 assembly are relay driver IC U2 and resistor network Z2.
1059 (DDE:FR ) A5 33 kohm reference fault
Suspect components on the A5 assembly are relay driver IC U2 and resistor network Z1.
1060 (DDE:FR ) A5 100 kohm reference fault
Suspect components on the A5 assembly are relay driver IC U2 and resistor network Z1.
1061 (DDE:FR ) A5 325 kohm reference fault
Suspect components on the A5 assembly are IC U26, relay driver U2, and Z1.
1062 (DDE:FR ) A5 1 Mohm reference fault
Suspect components on the A5 assembly are IC U26, relay driver U2, and Z1.
1063 (DDE:FR ) A5 2W comp open ckt fault
Suspect components on the A5 assembly are protection FETs Q13, Q14, Q15, and Q16,
R77, and power supply U33.
1064 (DDE:FR ) A5 2W comp fault
Suspect components on the A5 assembly are Q1, Q2, U40, and U35.
1065 (DDE:FR ) A7 Shunt amp fault (2.2A)
Suspects include Q33,U20,U24,U6 and Z5 on the A7 Assembly. Also suspect is U31 on
the A6 assembly.