JRC JMA-7710-6 User Manual

8 – 9
8.2
Table 8.2 (Continued)
No. Failure status Probable cause
8 a. Monitor failure or adjustment error.
b. The horizontal (HS) or vertical (VS) synchronous signal is fused.
c. CPU control circuit PCB (PC4401) failure.
9 a. The marker brilliance is adjusted to the lowest.
(See section “3.2 Preparation”)
b. CPU control circuit PCB (PC4401) failure.
10 a. Low ship's power.
b. CPU control circuit PCB (PC4401) failure.
c. Power (PC5101) failure.
11 a. CPU control circuit PCB (PC4401) failure.
12 a. CPU control circuit PCB (PC4401) failure.
b. Time base circuit PCB (PC4402) failure.
c. Low video brilliance.
13 a. "SYNC" or "STEP" is not properly set on the NSK (PC4201).
14 a. FAN failure. (B1)
CAUTION
In case of fan failure, radar unit will fail.
If fan failure occures, turn off the power at once, you should change the fan.
Table 8.3 List of Fuses in Use
Location Parts No.
Rated
Protection circuit Type
current
Inner F5001 to F5002 10A AC100V MF60NR-10A
Inner F5001 to F5002 5A AC220V MF60NR-5A
Inner F5003 to F5004 7A Time lag MF61-TS7
Display unit
Inner F5005 0.5A MF60NR-0.5A
Power supply F1,F3,F5 3.15A MF51NN-3.15A
Power supply F2 10A MF51NN-10A
Power supply F4 0.5A MF51NN-0.5A
NSK F1 to F4 0.5A PC4201 MF51NN-0.5A
Distorted display
No display appears even
after pressing the fixed or
variable range marker,
electronic cursor or panel
lighting key.
The screen returns to the
default during operation.
No alarm occurs.
Radar tracking does not
function.
The NUP or CUP display
cannot be selected.
"FAN" appears on the
lower of the screen.

JRC JMA-7710-6 Specifications

General

Brand	JRC
Model	JMA-7710-6
Category	Marine Radar
Language	English