TB 9-6625-1980-24
(g) POWER pushbutton pressed.
(2) Position TI decade dials to 10X.XX000. IF I LIMIT/ TRIP lamp does not
illuminate and OPR lamp extinguishes, perform b (1) through (3) below.
(3) Press POWER STDBY/RESET pushbutton and position decade dials to
indicate 10X.00000.
(4) Press POWER OPR pushbutton. If OPR lamp does not illuminate, perform b
(4) and (5) below.
(5) Press POWER STDBY/RESET pushbutton.
b. Adjustments
(1) Turn A4A4R13 V TRIPOUT ADJ (fig. 2) fully ccw.
(2) Press POWER STDBY/RESET, then OPR pushbuttons.
(3) Turn A4A4R13 V TRIPOUT ADJ cw until OPR lamp extinguishes and
I LIMIT/V TRIP lamp illuminates (R).
(4) Press POWER STDBY/RESET pushbutton and position decade dials
to 10X.XX00.
(5) Perform (1) through (3) above.
15. Power Supply
a. Performance Check
NOTE
Do not perform power supply check if all other parameters are
in tolerance.
(1) Press POWER PUSH OFF pushbutton.
(2) Extend assembly A4A8 (fig. 2), using voltage standard extender board.
(3) Connect multimeter between terminal 10 of A4A8 and + SENSE.
(4) Press POWER PUSH ON and STDBY/ RESET pushbuttons. If multimeter
does not indicate between +24.75 and +25.25, perform b (1) below.
(5) Press POWER PUSH OFF.
(6) Replace assembly A4A8 in its original position.
(7) Extend assembly A5A1 (fig. 2), using voltage standard extender board.
(8) Connect multimeter between pins 6 and 5 (common) on assembly A5A1.
(9) Press POWER PUSH ON and STDBY/ RESET pushbuttons. If multimeter
does not indicate between -24.75 and -25.25, perform b (2) below.
(10) Remove connection from pin 6 and connect to pin 16 on assembly A5A1. If
multimeter does not indicate between -4.95 and -5.05, perform b (3) below.
