TABLE OF CONTENTS, continued
SECTION TITLE PAGE
6D-18. Output PCA Het Mixer Level Adjustment, R72 6D-16
6D-19. Output PCA Het Level Adjustment, R10 6D-17
6D-20. Premodulator PCA Bandwidth Adjustment, R51 and C7 6D-17
6D-21. Output PCA Q16 Bias Adjustment, R96 6D-18
6D-22. Output PCA Q9 Bias Adjustment, R1 6D-19
6D-23. Output PCA) Gain Flatness Adjustment, C201 6D-19
6D-24. FM Gain Adjustment, R82, on Mod Control PCA 6D-20
6D-25. FM Steer Gain, R101 on Mod Control PCA 6D-20
6D-26. FM INV Balance, R102 on Mod Control PCA 6D-20
6D-27. ATTENUATOR/REVERSE POWER PROTECTION (RPP) 6D-20
6D-28. ATTENUATOR RPP TROUBLESHOOTING 6D-21
6E FREQUENCY AND PHASE MODULATION 6E-1
6E-1. FM/øM FAULT TREE 6E-1
6E-2. FM/øM BLOCK DIAGRAM 6E-2
6E-3. CIRCUIT DESCRIPTION 6E-2
6E-4. Oscillator Section 6E-2
6E-5. Divider Section 6E-4
6E-6. Phase Detectors, Loop Circuits, and Logic Section 6E-4
6E-7. Modulation Section 6E-7
6E-8. MODULATION CONTROL CIRCUIT DESCRIPTION 6E-10
6E-9. FM Input Voltage Processing 6E-10
6E-10. FM Steer Voltage Generation 6E-10
6E-11. FM Control Signals Generation 6E-10
6E-12. FM TROUBLE SHOOTING (A14) 6E-11
6E-13. Frequency Check 6E-11
6E-14. Modulation Check 6E-12
6E-15. Input Signals and Control Input Signals Checks 6E-12
6E-16. FM ADJUSTMENTS 6E-13
6E-17. Adjustments on the Modulation Control PCA (A11) 6E-13
6E-18. Alignment of FM PCA (A14) 6E-14
6F INTERNAL MODULATION OSCILLATOR 6F-1
6F-1. MODULATION OSCILLATOR BLOCK DIAGRAM 6F-1
6F-2. INTERNAL MODULATION OSCILLATOR
CIRCUIT DESCRIPTION 6F-1
6F-3. Direct Digital Synthesized Wave Generator 6F-1
6F-4. Pulse Generator 6F-3
6F-5. Signal Routing 6F-3
6F-6. MOD OSCILLATOR TROUBLESHOOTING AND
ADJUSTMENTS 6F-4
6F-7. Direct Digital Synthesizer Troubleshooting 6F-4
6F-8. Pulse Generator Troubleshooting 6F-5
7 LIST OF REPLACEABLE PARTS 7-1
TABLE OF CONTENTS 7-1
7-1. INTRODUCTION 7-2
7-2. HOW TO OBTAIN PARTS 7-2
7-3. SERVICE CENTERS 7-3
vi
(continued on page vii)
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