Nikon CM200 service manual Power UP SELF-TEST, Error Codes

Models: CM200

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Chapter 5

POWER UP SELF-TEST

1.0Error Codes

Turning on the radio starts a self-test routine that checks the RAM, ROM checksum, EEPROM hardware, and EEPROM checksum. If these checks are successful, the radio generates two high- pitched self-test pass tones. If the self-test is not successful, one low-pitched tone is heard. Radios with displays are able to display the error codes. Following are the possible errors and the related connections.

Table 5-1Power Up Error Codes

Possible Errors

To correct the problem...

 

 

RAM test failure.

Retest the radio by turning it off and turning it on

 

again. If bad tone reoccurs, replace RAM (U0122).

 

 

Codeplug structure mis-

Reprogram codeplug with correct version and retest

match or non existence of

radio. If message reoccurs, replace EEPROM

codeplug.

(U0111).

 

 

Wrong codeplug checksum.

Reprogram codeplug.

 

 

Page 47
Image 47
Nikon CM200 service manual Power UP SELF-TEST, Error Codes