[R-390] F. Rebuild Inspection / Visual Inspection

Flowertime01 at wmconnect.com Flowertime01 at wmconnect.com
Sun Mar 20 12:11:02 EDT 2011


F. Rebuild Inspection / Visual Inspection
___ 01 Spin all of the trimmers caps a couple of turns
___ 02 Tighten the screws holding the tube sockets to the chassis
___ 03 Check the value of all the resistors
___ 04 Check the value of all diodes
___ 05 Check the value of all capacitors
___ 06 Measure the resistance of all the front panel potentiometers
___ 07 Measure the resistance of the IF gain potentiometer
___ 08 Measure the resistance of the carrier meter zero potentiometer
___ 09 Remove all of the hoods of the chassis connectors to inspect
___ 10 Measure the resistance of EVERY damn wire in the chassis
___ 11 Inspect the power cord connections under the cover plate.
___ 12 Check the capacitors and resistors inside the IF transformer cans
___ 13 Test the dial lamps
___ 14 Check the selenium rectifier
___ 15 Check the antenna relay and inspected the contacts in the relay
___ 16 Check the main power micro switch
___ 17 Check capacitor C-553, which blocks B+ from the mechanical filters
___ 18 Check the 2UF AGC capacitor for leaking fluid
___ 19 Check C531 cause of audio and limiter function problems
___ 20 Check C547 cause of audio and limiter function problems
___ 21 Check C549 cause of audio and limiter function problems
___ 22 Check C603 capacitor mounted on the AF deck
___ 23 Check C606 capacitor mounted on the AF deck
___ 24 Check C609 8 ufd electrolytic capacitor mounted in the AF deck
___ 25 Check C-327, a 100 pf mica capacitor mounted in the RF deck
___ 26 Verify the values of the fuses
___ 27 Inspect the fuse holder operation
___ 28 Inspect the rear panel Antenna and IF output connectors
___ 29 Inspect the terminal board screws and jumpers
___ 30 Check all the tubes with a tube tester for minimum values
___ 31 Check the IF deck BFO bellows coupler.
___ 32 Check the IF deck band width switch operation
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