Motorola SSETM 5000 service manual Vocon TX Audio-Page, Ok?

9-16 Troubleshooting Charts: VOCON TX Audio

9.11 VOCON TX Audio—Page 1

Radio has no

Transmitter Deviation (VOCON Evaluation)

Inspect

Microphone and

Flex Connector

Connections		No	Repair connections
			and/or replace flex
OK?			and microphone
	Yes

Connect an

RLN4460A audio

test box (or equivalent)

to the radio side

connector

Inject a 200 mV rms 1.0 kHz tone to the test box Audio In port

Is FM	Yes	No Problem
deviation approx.		found.
3.0 kHz?		End

No

Probe Voltage at U509, pin 5

Is		Verify Integrity
1 kHz Signal	No
		of Mic path up
present at approx.
14 mV rms?		to U509

Yes

1

Problem

with Mic path Yes components?

No

2

Replace

appropriate component

MAEPF-27396-O

November 11, 2004 6881094C12-A