Keysight E4980A Service Manual page 45

Troubleshooting
Troubleshooting Using Service Function
Table 4-2 Power on test / self test failure troubleshooting information
Test Test Test Name
group No.
A1 1 A1_DCBUS_M12V
2 A1_DCBUS_P12V
3 A1_DCBUS_P5V
4 A1_DCBUS_P3.3V
5
A1_DCBUS_P2.5V
A1_DCBUS_P1.2V_M
GT
2
6
A1_DCBUS_STANBY
A1_DCBUS_P1.2V
7
A1_DCBUS_STANBY
A2 1 A2_DCBUS_GND
2 A2_DCBUS_PM5V
3 A2_DCBUS_P3V
4 A2_DCBUS_P10V
5 A2_DCBUS_M10V
6 A2_DCBUS_TEMP
A3 1 A3_DCBUS_GND
2 A3_DCBUS_N50V
3 A3_DCBUS_P50V
4 A3_DCBUS_N12V
5 A3_DCBUS_TEMP
Keysight E4980A/E4980AL Precision LCR Meter
Error Probable faulty board assembly
Code /
Message A1
0x01 ###
0x02 ###
0x04 ###
0x08 ###
0x10 ###
1
0x20 ###
1
2
0x40
###
2 2
0x01
0x02
0x04
0x08
0x10
0x20
0x01
0x02
0x04
0x08
0x10
A2 A3 Bias Handler
IF
### #
### #
### #
### #
### #
### #
# ###
# ###
# ###
# ###
# ###
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