Converter Multiplier CV-3633/GRC 144(V) Troubleshooting Chart

TM 11-5820-695-35

144(V) troubleshooting chart (b below) supplements the

3.18.1. Converter Multiplier CV-3633/GRC 144(V)

operational checks and corrective measures contained

Troubleshooting Chart

in TM-11-5820-695-12. If the operational checks and

corrective measures in below) supplements the

WARNING

operational TM-11-5820-695-12 fail to correct the

trouble or indicates that higher category maintenance is

115 Vac is present in Converter-

required, apply the corrective action in the chart below.

Multiplier CV-3633/GRC-144(V). Do

To use the chart, read down the Symptom column of the

not remove or replace parts, nor

troubleshooting chart until the abnormal symptom or

perform continuity or resistance

condition is found. Perform the corrective actions

checks while primary power is

indicated in the chart until the abnormal symptom or

applied to Radio Set AN/GRC-

condition is corrected.

144(V)4.

Figure 3-25.1 is a parts location diagram which will aid

Use of the Chart.

The CV-3633/ GRC-

the maintenance person in locating parts.

Converter-Multiplier CV-3633/GRC-144(V) Troubleshooting Chart.

Item No.

Symptom

Probable trouble

Corrective actions

POWER 1.5 AMP-SLO

Defective component or

Remove amplifier-

BLO fuse blows

wire in primary power

multiplier 3A5 (TM

when replaced.

distribution circuits or

11-5820-695-12)

amplifier-multiplier 3A5.

from electrical

equipment chassis

3A7. Insert re-

placement fuse and

then set POWER ON/

OFF switch on

status panel 3A8 to

ON. If replacement

fuse blows, proceed

to step b below.

Otherwise proceed

to c and d below to

isolate the fault.

Defective electrical

Perform the CV-

equipment chassis 3A7.

3633/GRC-144(V)

primary power dis-

tribution checks

(para 3-18.2c

sections 3a, b

and c).

Defective component or

Use the TS-352B/U

wire An amplifier mul-

to check amplifier-

tiplier 3A5.

multiplier 3A5

wiring.

Defective amplifier-

Use the TS-352B/U

multiplier heater HR1.

to check its resis-

tance as follows:

3A5P1 pin 1 to pin

2 should be 176 +18

ohms.

Change 6 3-30.1