TB 9-6625-2325-24
(3) Press and release all front panel pushbuttons to out position, except POWER.
(4) Set calibrator for a 1 V, 500 Hz output. If multimeter does not indicate a dc
voltage equivalent to TI display within 1 percent, perform b (1) below.
(5) Press RANGE HOLD/AUTO pushbutton to HOLD and set calibrator for a 100 mV,
500 Hz output. If multimeter does not indicate a dc voltage equivalent to TI display within
1 percent, perform b (2) and (3) below.
(6) Set calibrator for a 500 mV, 500 Hz output.
Multimeter will indicate a dc
voltage equivalent to TI display within 1 percent.
b. Adjustments
(1) Adjust R224 (fig. 1) until multimeter indicates a dc voltage equivalent to TI display (R).
(2) Adjust R234 (fig. 1) until multimeter indicates a dc voltage equivalent to TI display (R).
(3) Repeat a (3) through (5) above for best compromise.
12. Power Supply
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check
(1) Press and release all front panel pushbuttons except POWER.
CAUTION
To avoid damage to equipment, do not adjust 15 V supplies
with TI in over range.
(2) Connect multimeter INPUT HI to TP206 and INPUT LO to TP205 (fig. 1). If
multimeter does not indicate between +14.90 and +15.10 V, perform b (1) below.
(3) Connect multimeter INPUT HI to TP208 (fig. 1).
If multimeter does not
indicate between -14.80 and -15.20, perform b (2) below.
(4) Connect multimeter INPUT HI to TP207 (fig. 1).
Multimeter will indicate
between +4.75 and +5.25 V.
b. Adjustments
(1) Adjust R229 (fig. 1) until multimeter indicates +15.00 V (R).
(2) Readjust R229 (fig. 1) for best in-tolerance compromise for both -15 and +15 V at
TP208 and TP206 (fig. 1).
13. Final Procedure
a.
Deenergize and disconnect all equipment.
b.
Annotate and affix DA label/form in accordance with TB 750-25.