Furuno CSH-53 manual 6 Gray test, 7 SIO test

Gray test

This test checks for screen distortion. To escape from the test reset the power.

GRAY TEST

Figure 13-6 Gray test

SIO test

This test checks for proper communication between the display unit and transmitter unit, and requires a jumper plug. To escape from the test reset the power.

SIO TEST

DRAW	SIO	=	NG
IF	SIO	=	NG
PISO	SIO1	=	OK
	SIO2	=	NG
PIF	SIO1	=	OK

Figure 13-7 SIO test

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