Chapter 5. Troubleshooting; Outline; Message Indications - Furuno 1932 MK2 Service Manual

5.1

Outline

This chapter provides troubleshooting flow charts and describes error messages.
Error messages
When there is no bearing pulse signal the display unit shows BP-SIG-MISS and when there is no
heading signal, HD-SIG-MISS. Check the antenna cable when those indications appear.
Troubleshooting flow charts
The troubleshooting flow charts help the service technician to diagnose problems. To use the flow
charts, first find the symptom and its flow chart number in the flow chart on page 5-2. Then, follow
appropriate flow chart to troubleshoot.
5.2

Message Indications

The following messages appear to call the operator's attention to missing heading, bearing or gyro
pulses.
Error Message
HD SIG MISSING
BRG SIG MISSING
HDG shows ****.*
ARP-10 is not
connected.

Chapter 5. Troubleshooting

Heading pulse is not applied to the SPU pcb.
Bearing pulse is not applied to the SPU pcb.
****.* appears when bearing signal is interrupted momently.
1. Press [MODE] key to erase asterisk. (Momental signal loss)
2. Check the connection.
1. Optional ARP-10 board is not fitted.
2. Communication between ARP and SPU boards is abnormal.
(Defective board or connector)
5-1
Meaning