TB 9-6625-1935-24
(2) Deenergize TI and remove front meter cover and side panels. Remove circuit
board assemblies A1 and A2.
(3) Reinstall meter with readout device exposed.
CAUTION
Assure meter is installed right-side-up and that connectors
XM1 and XM2 are not reversed or shorted. If power is applied
while meter is installed upside-down, meter will be damaged.
(4) Short pins 10 and 12 of XA2 (fig. 4) together.
(5) Energize TI.
WARNING
HIGH VOLTAGE is present at digital panel meter face,
connector XM1, and power supply transformer pins. DEATH
ON CONTACT may result if personnel fail to observe safety
precautions.
(6) Using nonmetallic screwdriver, adjust potentiometer marked Z (upper right
corner of TI panel meter face) for a 0 indication on TI meter.
(7) Deenergize TI and reinstall circuit board assemblies A1/A2 and meter with
meter cover. Remove short from pins 10 and 12 of XA2 (fig. 4).
(8) Energize TI and repeat a above.
(9) Adjust A2R6 (fig. 1) to obtain a calculated power within the tolerance stated
in a (12) above (R).
16. Recorder Output Test
a. Performance Check
(1) Connect multimeter to TI RECORDER output connector, using adapter.
(2) Set RANGE switch as necessary and adjust COARSE ZERO control for an
indication of 1 on TI meter 0 to 1 scale. If multimeter does not indicate between 0.995 and
1.005 V dc, perform b below (R).
b. Adjustment. Adjust A2R74 (fig. 1) for a multimeter indication between 0.995 and
1.005 V dc (R).
17. Calibration Factor Test
a. Performance Check
(1) Set CALIBRATION FACTOR switch to 88%.
(2) Adjust COARSE ZERO control for a 1.000 V dc indication on multimeter.
(3) Set CALIBRATION FACTOR switch to positions listed in table 4. Multimeter
will indicate within limits specified for each position.
