Table 6. Power Supply Check

TB9-6625-2131-24

Multimeter indications (V Dc)

Test instrument

test points

Min

Max

TP -15 SENSE

-14.85

-15.15

TP +5 SENSE

+4.9

+5.1

TP +15 SENSE

+14.85

+15.15

TP +50 SENSE

+49.5

+50.5

TP +130 SENSE

+124.8

+135.2

+5V LIGHTS CONTROL ILLUM.

+4.5

+5.5

Figure 9 for type R7844.

b. Adjustments

(1) Adjust -50 V ADJ A29 R1513 (fig. 4) (fig. 9 for type R7844) until multimeter

indicates 50 V dc (R).

(2) Adjust INVERTER CONTROL A28 R1293 (fig. 4) (fig. 9 for R7844) until

multimeter indicates between +45 and +55 V dc (R).

NOTE

Any change in A28 R1293 adjustment may affect the -50V dc

supply.

NOTE

Any change in A29 R1513 adjustment may affect the operation

of all TI circuits.