If "Gn" Is Displayed - Furuno DSC-60 Service Manual

1.2 If "NG" is displayed:
If NG is displayed in the test results, take the action in the table below first.
Ite m
M A IN C PU
M O D E M C PU
R C VR 1
R C VR 2
R EM O TE RT
R EM O TE DP
If MAIN CPU and MODEM CPU are "NG":
- Clear SRAM by turning off power.
If "NG" is still displayed, try "ALL CLEAR" of EEROM.
After EEROM cleat, setup the system again.
If REMOTE RT and NBDP are "NG":
- Check the connections between the connected units.
- Check system settings of the connected units.
- Check the system settings and DIP switch settings of DSC-60.
- Check whether the problems, if any, are about the main unit or connected units, by executing
the loopback test.
A ctio n
C lear S R AM by turning
off p owe r. If N G is still
displayed, e xecute A LL
C LE AR of E ER O M . After
E ER O M ha s been
cleare d, execute the test
again. If N G turns to O K,
m ake the system settin g
as re quired.
If M A IN C PU , an d
M O D E M C PU are O K,
and If both R C V R1 and 2
are NG ,
C O N TR O L/M O D E M
board is faulty, an d if one
of R C VR s is N G , the
rece iver board connected
to R C VR w ith N G is
faulty.
C heck the co nnections,
the system settings, an d
D IP sw itches. A lso, check
the related settin gs of the
conne cted units. If a ll o f
these are O K , execute
the loo pback test.
R eferenc e pag es
C hapter 4 1. S etup of M M S I
and ----, page 4 -1.
C hapter 4 2.9 System se tup,
page 4-14.
C hapter 5 2.2 Abou t test
conten t, page 5 -3.
C hapter 3 2.P C Bs, p age 3-3 .
C hapter 5 2.2 Abou t test
conten t, page 5 -3.
C hapter 3 2.P C Bs, p age 3-3 .
C hapter 4 2.9 System se tup,
page 4-14.
C hapter 4 3.S etting D IP
S witche s, page 4-17.
C hapter 5 3.Lo op back test,
page 5-7.
7-2
1.DAILY TEST
Fa ults P C B
C O N TR O L/M O D E M
R X (For Ru outin R X
P CB )
R X (For R uoutin R X
P CB )
Loop back test N G Q .
C O N TR O L/M O D E M