TM-9-2320-328-13-P-2

HEMTT-BASED WATER TENDER (HEWATT)

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST); PART 2 OF 3

MARCH 2009

TM-9-2320-328-13-P-2 - Page 114 of 1390

TM 9-2320-328-13&P-2

0119-2

DRAFT

0119

Change 1

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HWT1666

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NOTE

Two-way radio is turned on by pressing and releasing volume control knob.

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Step 2.

Push battery disconnect switch to on position (WP 0007).

Push two-way radio volume

control knob to on position (WP 0004).

Check if two-way radio display illuminates.

.

If two-way radio display does not illuminate, go to Step 5.

.

NOTE

Two-way radio will enter into a self test mode after power up. If power up self test is

successful, you will hear two high pitch tones.

If two-way radio fails to power up, you will

hear a single low pitch tone.

.

Step 3.

Push two-way radio volume control knob to off position (WP 0004).

Turn two-way radio

volume control knob clockwise to full volume position (WP 0004).

Push two-way radio

volume control knob to on position (WP 0004).

Check for audible two-way radio self

test tones.

.

If two-way radio transmits a single low pitch tone, replace two-way radio

(WP 0276).

.

Step 4.

Disconnect communication bus line between two-way radio and intercom controller

(WP 0276).

Using two-way radio microphone, check if two-way radio transmits and

receives to and from a handheld radio.

.

a.

If two-way radio does not operate properly, replace two-way

radio (WP 0276).

.

b.

If two-way radio operates properly, troubleshoot Intercom and

Headsets Do Not Operate Properly (WP 0120).

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MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION