90 Chapter3
Manual Adjustment Procedures
Introduction
Introduction
This chapter contains information on manual adjustment procedures.
Never perform adjustments as routine maintenance. Adjustments
should be performed after a repair or performance test failure. For
information on which adjustments to perform, refer to Table 3-1 on
page 93.
Information on automated adjustments can be found in Chapter 2 of
this service guide. Following is a list of the automated adjustments:
Automated Adjustments
1. Initial Information
2. LO Frequency
3. YTO FM Coil
4. LOMA Adjustments
5. 3rd Amp/2nd IF Align
6. Cal Out Adjustment
7. Front End Cal
8. IF Bandpass Poles
9. IF Amplitude
10. DC Log Adjustments
11. Sampling Oscillator
Manual Adjustments
1. IF Bandpass Adjustment.....................................................page110
2. IF Amplitude Adjustments..................................................page116
3. DC Log Ampli er Adjustments...........................................page121
4. Sampling Oscillator Adjustment.........................................page126
5. YTO Adjustment.................................................................page130
6. Calibrator Amplitude Adjustment.......................................page134
7. 10 MHz Reference Adjustment — OCXO..........................page136
8. 10 MHz Reference Adjustment — TCXO (Option 103)....page140
9. Demodulator Adjustment....................................................page142
10. External Mixer Bias Adjustment.......................................page145
11. External Mixer Amplitude Adjustment.............................page147
12. 6
00 MHz Reference Adjustment.......................................page159
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