Table 5-1. Troubleshooting Procedures - TM-5-6350-264-14-P-60017

TM5-6350-264-14&P-6

NAVELEX EE181-AA-OMI-1/E121 DT-545

TO 31S9-2FSS9-1-6

e. To remove pry-off alarm switch (fig. 5-1), use

mounting surface with mounting screws. Connect

soldering iron of 50 watts maximum to remove

wires to TB1. Secure cover to chassis with screws.

wires from switch terminals. Remove screws that

secure chassis to mounting surface. Pull housing

i. After replacement of major components or

away from mounting surface.

Remove switch

assemblies during troubleshooting, test the GWS

retaining nut and lock washer from rear side of

for proper operation. Ensure that the key-operated

housing. (Refer to fig. 5-1.) Remove switch.

switch on the Control Unit is in the access position.

Remove the chassis cover. Disconnect the wire

f. To replace pry-off alarm switch, set meter to ohms

between TBI-1 and the conduit from TBl-1. Set

and check switch terminals. Meter should indicate

multimeter to ohms and connect meter leads to TBl-

0 ohms with switch depressed and infinity with

1 and 6. Meter should indicate over 100, 000 ohms.

switch released. Use a soldering iron of 50 watts

Depress TAS. Meter indication should change to 2

maximum to solder wires to switch terminals. Insert

ohms or less. Hold TAS plunger down with a piece

switch through hole in rear panel and secure lock

of tape. Loosen chassis mounting screws and

washer and nut from rear of panel. Secure chassis

move chassis away from mounting surface. Meter

to mounting surface with screws.

indication should change to over 100, 000 ohms.

Tighten screws to secure chassis to mounting

g. To remove chassis, remove screws that secure

surface, and meter indication should change to 2

cover. Remove cover. Tag and disconnect wires

ohms or less. Disconnect wire from TB1-2. Meter

from TB1. Remove screws that secure chassis to

indication should change to over 100, 000 ohms.

mounting surface. Remove nut from end of conduit

Connect wire to TB1-2. Meter indication should

inside housing. Remove chassis.

return to 2 ohms or less. Dis-connect wire from

TB1-3.Meter indication should change to over 100,

h. To replace chassis, align new chassis with conduit

000 ohms. Connect wire to TB1-3, disconnect

and screw holes in mounting surface.

Insert

meter leads, and connect wire to TBI-1. Install

conduit through hole in side of chassis, and secure

cover.

retaining

nut.

Secure

chassis

NOTE

Troubleshooting procedures listed in table 5-1 may require more than one person to perform corrective action.

Covers should be removed as necessary to perform troubleshooting procedures.

Never disconnect a wire without first marking that wire to assure proper reconnection.

Table 5-1. Troubleshooting Procedures

Trouble

Probable cause

Corrective action

1. Constant

a. Broken grid wire

a. Tag and disconnect grid wire from TBl-1 and

alarm.

TB1-2. Set multimeter to ohms, and con-

nect leads to wires removed from TBI-1

and TB1-2. Meter should indicate less than

2 ohms. Tag and disconnect grid wires from

TB1-3 and TB1-4. Connect meter leads to

wires removed from TB1-3 and TB1-4.

Meter should indicate less than 2 ohms.

5-4