Watkins-Johnson Company WJ-8718-19/FE Instruction Manual page 10

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CONTENTS WJ-8718-19/FE HF RECEIVER
TABLE OF CONTENTS (Cont'd)
SECTION IV
MAINTENANCE
Paragraph page
4.3.5 Parts Replacement Guidelines 4_57
4.3.5.1 Soldering Techniques WWW'!!!! WW 4-57
4.3.5.2 Component Replacement !!! WW'!.'! W 4-58
4.3.5.3 Realignment 4_5g
4.3.6 Adjustment/Alignment Procedures .'! " 4-59
4.3.6.1 General WWW!!!!!.!!! 4-59
4.3.6.2 Synthesizer Alignment WW 4-59
4.3.6.2.1 1st LO Synthesizer Alignment !!!!!!! 4-59
4.3.6.2.2 2nd LO Synthesizer Alignment (A5A2) 4-60
4.3.6.2.3 2nd LO Filter Adjustment WWW!! 4-63
4.3.6.2.4 3rd LO Synthesizer Alignment WW!!!!!!!!!."" 4-63
4.3.6.2.5 2 MHz Time Base Adjustment WWW!!!!! 4-63
4.3.6.2.6 BFO Synthesizer Alignment ....WWW. 4-64
4.3.6.3 Receiver Alignment ...WWW 4-64
4.3.6.3.1 Input Converter Alignment WW 4-64
4.3.6.3.2 10.7 MHz Filter Switch Adjustment WW WW. WW 4-66
4.3.6.3.3 455 MHz Amplifier/AM Detector Response Alignment 4-67
4.3.6.3.4 455 kHz Amplifier/AM Detector Gain Adjustment 4-69
4.3.6.3.5 FM Discriminator Alignment ' 4.70
4.3.6.3.6 LED Intensity Adjustment ....WW 4-73
4.3.6.4 Frequency Extender Alignment 4-73
4.3.6.4.1 1st LO Synthesizer, FE-A1A1A1, Alignment 4-73
4.3.6.4.2 Preselector, FE-Al Al A3, Alignment 4-74
4.3.6.4.3 2nd LO Synthesizer, FE-A1A2A1, Alignment 4-75
SECTION V
REPLACEMENT PARTS LIST
5.1 Unit Numbering Method 5_1
5.2 Reference Designation Prefi 5-1
5.3 List of Manufacturers 5_1
5.4 Parts List .......WWW 5-5
5.5 Revision Level 5.5
5.6 Type WJ-8718-19/FE HF Receiver WW!!!!!!!!!!!!!!!! 5-6
5.6.1 Type 72640 Power Distribution 5-15
5.6.2 Type 791616-1 RF Filter , 5-17
— 5.6.2.1 Part 280093 30 MHz Low Pass Filter 5-19
i.6.3 Type 791592-8 Input Converter !W 5-21
5.6.3.1 Part 370611-7 1st Mixer, 1st IF , 5-23
5.6.3.2 Part 370646-7 2nd Mixer, 2nd IF 5-25
5.6.4 Type 794278-1 Frequency Extender 5-28
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