functions are indicated on the schematic drawings, Figures 24 and 27, and in the photographs, 
Figures 23 and 26. A test cable is provided for connecting the supplies to the console equip- 
ment while making these adjustments. The voltage controls should be adjusted first for 
proper output (+ 5-percent tolerance). Then a high gain oscilloscope should be connected to 
the output of the supply and the BALANCE control adjusted for minimum 120-cycle ripple. 
6.2 MODEL EQUIPMENT 
The transistor-regulated power supplies for the model equipment use one or two fuses for 
regulator protection. These fuses must be of the quick blow type and oversize fuses must not 
be used. The components in the regulator circuits may be checked or replaced by removing 
the base section of these units. The voltage tolerance of these units is + 5 percent. 
7. BLOWER 
The blower at the rear of the console uses a replaceable filter element. The element 
should be replaced when the indicator on the blower panel reaches the red line. The blower 
motor has two oil fittings which should be lubricated with SAE 20 oil every 6 months. 
IV-10 
