TB 9-6625-2084-24
(3) Connect vertical amplifier CH 1 input to TI CALIBRATOR 4-V output and
GND (front panel).
(4) A d j u s t R 1 4 5 9 f o r T y p e s 7 6 2 3 A , 7 6 3 3 , a n d R 1 0 7 7 f o r 7 6 1 3 ( f i g . 3 ) f o r
4 divisions of vertical deflection on TI (R).
Figure 3. A14 or A15 board - adjustment locations - (Tektronix, Type 7633) and A8 board
- adjustment locations (7613/R7613).
14. Power Supply
a. Performance Check
NOTE
Do not perform supply check if all other parameters are within tolerance.
(1) Remove all plug-ins from TI compartments and position controls as listed in
(a) through (c) below:
(a) INTENSITY control fully ccw.
(b) VERT MODE LEFT pushbutton pressed.
(c) TRIG SOURCE LEFT pushbutton pressed.
(2) Connect digital voltmeter to -50 V test point (fig. 4) and chassis ground. If
digital voltmeter does not indicate between -49.9 and -50.1 V dc, perform b below.
(3) Connect digital voltmeter to test points listed in table 4 and chassis ground.
Digital voltmeter will indicate within limits specified.
(4) Set POWER OFF/ON switch to OFF and connect digital voltmeter between
HIGH VOLTAGE TEST POINT (fig. 4) and chassis ground, using high voltage probe
supplied with digital voltmeter.
