Adjustment Failure Troubleshooting - Keysight E4980A Service Manual

Troubleshooting
Performance test failure troubleshooting

Adjustment failure troubleshooting

Table 4-12
probably faulty assembly. Note that this table lists some typical cases. There
are possibilities that another assembly may be faulty.
Table 4-12 Adjustment failure troubleshooting information
Adj
Num.
1
2
3
4
5
6
7
8
9
10
11
###: Most suspicious assembly
##: Suspicious assembly
#: Possible faulty assembly
66
represents the relationships between the failed adjustment and
First failed adjustment
Null DC offset adjustment
Null ADC offset adjustment
ADC Linearity adjustment
DC Bias adjustment
DC Level V Monitor adjustment
DC Level I Monitor adjustment
DC Source adjustment
DCR adjustment
Impedance adjustment
AC level Monitor adjustment
OSC Level adjustment
Probable faulty board assembly
A1 A2
###
###
###
##
###
###
#
###
###
###
#
Keysight E4980A/E4980AL Precision LCR Meter
A3 PPMC
##
###
###
#
#
#
###