Agilent Technologies 4395A, Service Manual

Page: 290 / 343

T able 11-1. P ost Repair Procedures (continued)
Replaced
Assembly or P art
Adjustments
Correction Constants
V erication
A9 Input Multiplexer Input DC Oset Adjustmen t INSPECT THE PO WER ON SEQUENCE
1
Input Lo cal Null Adjustmen t Receiver Noise Level
Receiv er Gain Adjustmen t Input Crosstalk
IF 8 dB/16 dB Gain Adjustmen t Input Imp edance
Receiv er Flatness Adjustmen t Absolute Amplitude Accuracy
Receiv er A ttnuator Adjustmen t Magnitude Ratio/Phase Dynamic Accuracy
IF BPF Flatness Adjustmen t Magnitude Ratio/Phase F requency Resp onse
Displa yed Av erage Noise Level
Amplitude Fidelity
Input A tten uator Switching Uncertaint y
Amplitude Accuracy/F requency Resp onse
Second Harmonic Distortion
Third Order Intermo dulation Distortion
Other Spurious
Residual Resp onse
A20 Mother Board None INSPECT THE PO WER ON SEQUENCE
1
A30 F ront Keyb oard None INSPECT THE PO WER ON SEQUENCE
1
External T est 50: FR ONT P ANEL DIA G
2
A32 IBASIC I/F None INSPECT THE PO WER ON SEQUENCE
1
Che ck the A32 I-BASIC Interfac e and the
mini DIN Keyb o ar d
2
A33 EXT I/O None INSPECT THE PO WER ON SEQUENCE
1
External T est 52: 24 BIT I/O POR T
2
A40 Pre-Regulator DC Bias Adjustmen t INSPECT THE PO WER ON SEQUENCE
1
A50 DC-DC Con verter None INSPECT THE PO WER ON SEQUENCE
1
A51 GSP None INSPECT THE PO WER ON SEQUENCE
1
A52 LCD None INSPECT THE PO WER ON SEQUENCE
1
A53 FDD None INSPECT THE PO WER ON SEQUENCE
1
External T est 51: DSK DR F A UL TY ISOLN
2
1 See the T r oublesho oting c hapter.
2 See the Digital Contr ol T r oublesho oting c hapter.
11-4 P ost Repair Procedures