5-6 
Symptom Possible Causes Troubleshooting Measures 
Data is not shared. 
The baud rate is different.  Check  the RS-485 or Daisy-chain bit 
rate. (Daisy-chain is only MID.) 
Output sentence is not selected. Check the RS-485 output sentence. 
The cable is disconnected.  Check the RS-485 or Daisy-chain 
connection. (Daisy-chain is only MID.)
 
5.3.2   Repair Unit 
 
    Repair units and their models are shown below. 
No Name  Model  Notes 
1 DSP UNIT  CMJ-562  
2 POWER UNIT  CMP-490  
3 LCD UNIT  CCN-423  
 
  FUSE 
No Name  Model  Notes 
1 FUSE 
MF60NR 
250V 1 
for Data power cable 
1A FUSE 
 
  Mechanical Parts 
No Name  Code  Notes 
1  FRONT PANEL KIT  MPBC47673 
FRONT PANEL 
PRODUCT NAMEPLATE 
 
  JLR-4341 
No Name  Code  Notes 
1  Beacon Antenna  CAW-1  For JLR-4341 DGPS Sensor 
2  Beacon Controller  CMA-920  For JLR-4341 DGPS Sensor 
 
 
 
5.3.3   Regular Replacement Parts 
 
    Parts which should be regularly replaced are shown below. 
    Contact JRC or an affiliate to order. 
 
  NWZ-4610 
No Name  Model  Life  Notes 
1  LCD UNIT  CCN-423  40000 hours 
Approximately 5 years of 
continuous use
 
 
  JLR-4341 
No Name  Model  Life  Notes 
1 
Lithium Battery 
(Inside JLR-4341 
DGPS Sensor) 
CR2354-1VC
Approximately 
5 years 
Reception is possible even without 
battery power. 
(It will take 30 to 60 seconds 
longer to fix the position) 
2 
Radome Kit 
(JLR-4341 DGPS 
Sensor Radome 
and Packing) 
MPAE30534 
Battery 
replacement 
Opening the radome decreases 
waterproofing effectiveness, so 
replace the radome and packing 
as well as when performing battery 
replacement.