Metaxas & Sins solitaire, Руководство пользователя

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TESTING
TOOLS REQUIRED:
Dual Channel Oscilloscope
Signal Generator
30V x 2 Power Supply
Multimeter
1. Flip the ampli fi er to reveal the underside and
remove the bottom panel [M3 alun bolts]. Remove
the VU Module. Rotate the biasing trimpots VR5 &
VR5a fully clockwise.
2. Connect the + and - and GND supply lines at
the FUSEHOLDERS or CENTER PIN OF POWER
TRANSISTORS [+ 2987, - 1227] to the external
current limiting Power Supply with m/-
35VDC output voltage and 100 mA current limiting
3. Generate a 1.0kHz frequency sine wave.
Connect your oscillator to any of the inputs 1,2,3
and select it with the rotary switch. Adjust the
VOLUME control to position 9. Connect the
Speaker outputs to your Oscilloscope’s channel 2.
4. Install or replace the 4 fuses with MA205 [FAST
BLOW] 1.0 A [for extra safety)
5. Power the module on and check that there is no
current limiting.
You should now be able to see the ampli fi er
output on the Oscilloscope ch2.
maintenance