[R-390] R. Adjust T208, C520, L503, and Zero BFO

[Flowertime01 at wmconnect.com]

R. Adjust T208, C520, L503, and Zero BFO
___ 01 Set the Line Meter OFF
___ 02 Set the Line gain to 0
___ 03 Set the ANT Trim to 0
___ 04 Set the AGC to MED
___ 05 Set the LIMITER to OFF
___ 06 Set the Band Width to 2KHz
___ 07 Set the BFO Pitch to 0
___ 08 Set the Audio Response to wide
___ 09 Set the Breakin OFF
___ 10 Set the Function to MGC
___ 11 Set the BFO OFF
___ 12 Release the Zero Adjust
___ 13 Release the Dial Lock
___ 14 Set the Local Audio to max
___ 15 Set the RF to max
___ 16 Adjust signal generator for 455 KHz output frequency
___ 17 Adjust signal generator for 75 micro volt RF output
___ 18 Adjust signal generator for 30 % audio tone modulation (400 Hz)
___ 19 Meter diode load output for -7 volts DC
___ 20 Place a 600 ohm load across the local audio output
___ 21 Meter local audio output for 450 milliwatts, 27 db, or 17.3 Volts AC
___ 22 Connect the signal generator to E211 through a capacitor.
___ 23 Adjust signal generator for diode load output of -7 volts DC
___ 24 Adjust T208 for peak (This adjustment is broad)
___ 25 Adjust signal generator for diode load output of -7 volts DC
___ 26 The signal level should be less than 75 micro volt RF output (50)
___ 27 The signal with 30% modulation should output 450 milliwatts audio
___ 28 Set the signal generator modulation on and record the audio output
___ 29 Meter local audio output for 450 milliwatts 27 db,or more
___ 30 Set the signal generator modulation off and record the audio output
___ 31 Meter local audio output for 1 milliwatt, 0 db, or less
___ 32 Set the Band Width to .1 KHz
___ 33 Rock the signal generator for maximum diode load output
___ 34 Adjust signal generator for diode load output of -7 volts DC
___ 35 Record the signal generator output level
___ 36 The following steps should produce six marks around C520
___ 37 Switch the generator output up 60 db (two switch steps on URM 25)
___ 38 Increase the generator frequency until output drops to -7 volts DC
___ 39 Adjust C520 for a dip in the diode load voltage
___ 40 Mark the can and label this H (5 o'clock)
___ 41 Adjust C520 for the other side dip in the diode load voltage 
___ 42 Mark the can and label this H (7 o'clock)
___ 43 Decrease the generator frequency until output drops to -7 volts DC
___ 44 Adjust C520 for a dip in the diode load voltage
___ 45 Mark the can and label this L (4 o'clock)
___ 46 Adjust C520 for the other side dip in the diode load voltage 
___ 47 Mark the can and label this L (8 o'clock)
___ 48 Divide each pair of dips and mark the can C
___ 49 Set C520 to the C mark (either 4:30 or 7:30)
___ 50 Rock the signal generator (to 455) for maximum diode load output
___ 51 Adjust signal generator for diode load output of -7 volts DC
___ 52 Set the Band Width to 1 KHz
___ 53 Adjust L503 for peak output
___ 54 Set the BFO switch ON
___ 55 Loosen the clamp on the BFO shaft extension
___ 56 Zero the BFO knob
___ 57 Zero the BFO against the signal
___ 55 Tighen the clamp on the BFO shaft extension
___ 56 Set the BFO switch OFF
___ 57 Disconnect the generator
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