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B) Hi-mid to 10- Fig.4; hi-mid to 0- Fig.5.
C) Lo-mid to 10- Fig.6; lo-mid to 0- Fig.7.
D) Bass to 10- Fig.8; bass to 0- Fig.9.
BOOST / SHAPE TEST
1) Engage Channel select switch to go to lead channel.
2) Change scope-B to 5V/cm @1ms/cm.
3) Increase shape to 10- compare to Fig.11.
4) Increase boost to 10- compare to Fig.12.
FOOTSWITCH TEST
1) Connect RFG2 to footswitch jack (J6).
2) Engage switches on RFG2 so that both LEDs are lit. Lead channel LED should also be lit.
3) Output should look like Fig.12.
4) Disengage boost switch on RFG2-compare to Fig.11.
5) Disengage channel switch on RFG2- compare to Fig.1 (change scope range to 2V/cm, if necessary. Clean channel LED should light.
6) Remove footswitch.
RETURN STEREO/MONO TEST
1) Set AC-VM to 10V scale.
2) Set oscillator to 100Hz sine wave at –26dBV (50mV).
3) Insert plug from oscillator halfway into return jack (J3).
4) Set output level to 10. R Channel = 7.1Vrms (stereo). 4V for mono amp. Scope switch should be set to load B.
5) Push in stereo/mono switch (S2); signal goes away.
6) Disengage stereo/mono switch; signal comes back.
7) Push plug in the rest of the way. Signal disappears again on stereo unit, measures 4Vrms on mono unit.
8) Flip scope switch to down- L Output = 7.4vrms.
9) Engage stereo/mono switch: L Channel output = 7Vrms.
NOISE TEST
1) Remove oscillator input.
2) Turn all front panel knobs to 10, switches out.
3) Connect speaker to Left Output (switches out) and listen for noise, should be smooth with no crackling.
4) Change AC-VM range to 1V.
5) Noise should measure less than: 400mVrms, 500mV-mono.
6) Change speaker to Right Output (switch up) and listen for noise.
7) Also change scope switch (up) to measure noise in R Channel as < 400mVrms.
8) Engage channel select switch to change to lead channel.
9) Noise in speaker should be smooth, with no crackling and should measure: 250mVrms, 400mVrms-mono (on AC-VM).
RETURN KNOBS TO ZERO- READY FOR BURN-IN
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