Specifications

46 YEOMAN Sport
12. Troubleshooting
Problem Possible cause Suggested action
NO RESPONSE. NO A) No external power A) Check battery voltage.
DISPLAY OR supply. Check polarity (red +12V, thin
BACKLIGHT. B) Blown internal fuse. black 0V) Check any external fuse.
B) Return to service dealer.
UNIT COMES ON A) Low voltage or A) Check battery voltage.
AND THEN SCREEN corrupted data being Temporarily disconnect input
BLANKS OR LOCKS transmitted to data cable.
UP. YEOMAN.
YEOMAN DOES NOT A) Incorrect reference A) Check Lat/Long of reference
REFERENCE positions. positions.
CORRECTLY. B) Reference positions B) Check positions are within the
outside active area. active area of the chart table.
C) Reference positions C) Check P1 and P2 are more than
too close. 50mm apart.
YEOMAN SPORT A) Unit corrupted by A) Check that there is no metal near
PLOTS INACCURATE metal. YEOMAN Sport.
POSITION. B) Chart has moved. B) Fix chart and re-reference.
C) GPS input is defective. C) Check connections, interface and
Datum are correct.
YEOMAN LIGHTS A) YEOMAN not A) Check GPS specification.
FLASH IN NAVIGATION receiving position Check connections.
MODE.
YEOMAN DOES NOT A) Internal battery flat A) Return to service dealer or
RETAIN REFERENCE YEOMAN.
POSITIONS.
YEOMAN LIGHTS A) In Demo mode A) See Section 3 and 11.1.7.
FLASH AT TEN
SECOND INTERVALS.