artisan 8640B - Page 156

Model 8640B TM 9-4935-601-14-7&P
Table 5-2. Post-Repair Tests and Adjustments (2 of 4)
Assembly Repaired Performance Tests Adjustments
A5 FM Amplifier Assy FM 3 dB Bandwidth Test Check power supply voltages
A7 FM Shaping Assy (4-38) (5-25)
FM Distortion Test (4-39) Preliminary FM Adjustments
FM Sensitivity and Accuracy (5-38)
Test (omit meter check) FM Linearity Adjustment
(4-40) (5-39) (5-44)
FM Sensitivity Adjustment
(5-40)
A6 Annunciator Assy None None
A8 Counter/Lock Assy Operator's Checks (Figure 3-4) Check power supply voltages
Frequency Accuracy and Fine (5-25)
Tune Test (accuracy only) Internal Reference Frequency
(4-12) Adjustment (if necessary)
Frequency Stability Tests (5-41)
(4-13, 4-14, 4-15, and 4-16)
Sub-Harmonics and Non-
Harmonic Spurious Test
(4-18)
Output Leakage Test (4-29)
Counter External Sensitivity
Test (4-42)
Internal Reference Accuracy
Test (4-43)
Internal Reference Drift
Rate (Stability) Test
(4-44)
Phase Lock Restabilization
Time Test (4-45)
A9 Peak Deviation and Operator's Checks (Figure 3-4) Check power supply voltages
Range Switch Assy FM Sensitivity and Accuracy (5-25)
Test (4-40) Peak Deviation and Range
Switch Adjustment (if
necessary) (5-33)
Range Switch Adjustment
(5-34)
Preliminary FM Adjustments
(if necessary) (5-38)
FM Linearity Adjustment
(if necessary) (5-39) (5-44)
5-5
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