Table 3-11. Voltage Chart No. 9

TM 9-4910-736-14&P

Voltage Chart No. 9 - Meter Operation

Table 3-11.

NOTE

All dc voltages are measured between point specified and pin E22

(instrument ground) with DC VTVM. Battery voltage is assumed to

be 12 V. All voltages are 20%.

FUNCTION switch position:

OHM

OHMMETER RANGE:

0-100 K

Test leads:

Shorted

Test

Step

Action:

Normal

voltage abnormal

no.

voltage normal

voltage

point

Proceed to step 2.

Refer to table 3-4.

Set ZERO

Lug 9 of

ADJ .

switch S3,

control

ohmmeter

for 0.6 V

range

indication

a. (Voltage is very low: meter

Proceed to step 3.

0.21 V

Pin E5

shorted, replace CR22 or

CR23 .

b. Voltage high: proceed to

step 3.

a. Voltage is 0 V: examine

If meter is still

0.11 v

Pin E7

leads from pin E5 and E7

not reading, re-

leading to meter. If in

place it.

order, replace meter.

b. Voltage high: proceed

to step 4.

Examine switch S1. If

a. Replace R96.

Switch S1,

defect not apparent, check

b. Replace

section

wiring.

meter.

1R, lug 8

3-15