Electrical Tests. - SB-740-91-010341

SB 740-91-01

(con't)

(b)

Mechanical Inspection

(1)

Verify all screws and fasteners are tight.

(2)

Verify QE and DEF binding posts on case and on gun

assemblies push in freely and will hold a #18 wire

firmly.

(3)

Loosen the fasteners holding the battery cover and the

remove cover. There shall not be batteries installed.

(4)

Verify all rubber boots on Gun Assembly are not damaged.

(5)

Verify all knobs are secured on their control shafts and

detent switches detent properly and the knob indicators

line up with the proper nomenclature.

(6)

Verify all potentiometer type controls rotate smoothly

to their stops. There shall not be any 360 rotation of

these controls.

4. Electrical Tests.

The following tests are to be performed, using the applicable data sheet (figure B-1) for

Step

Setting and Instructions

Normal Indication

A Functional Test

(1) Set PS1 to on and set voltage to

35v + 1v D/C. Set POWER switch on.

Measure between DEFI and DEF2

5.25v + 0.5vD.C.

GDU power lamp on

SCA displays GUNOOEOM

GA connected to DEF

displays a horizontal

arrow.

GA connected to QE

displays a vertical

arrow and decimal

point.

Alarm will sound.

5.35v + 0.5vDC.

(2) Reduce PS1 voltage to 12v + 0.5v and

re-check measurement of step la and

GDU power lamp on.

lb.

Change 1 B-130.18