Motorola SSETM 5000 service manual Check Preamp Output Signal At C530

Troubleshooting Charts: VOCON RX Audio 9-19

VOCON RX Audio—Page 2

1

Check Preamp

Output Signal

at C530

			Check Preamp
Signal		No	U502 and its
Present?			associated
			components
	Yes
		Yes
Distortion
>3%?
	No
		No
Preamp Gain
= 2.8 V/V?
	Yes
			Check Audio PA
PA Gain		No
			U503 and its
= 11.2 V/V?
			Components
	Yes
		Yes
Distortion
>3%?
	No
Check Flex
Connector

Make sure that you look at all solder contacts. Check resistors and capacitors associated with this check. If all look fine, then replace U502.

Make sure that you look at all solder contacts. Check resistors and capacitors associated with this check. If all look fine, then replace U503.

MAEPF-27395-O

6881094C12-A November 11, 2004