Daily Test - Furuno 9ZWFM8800S Operator's Manual

6. MAINTENANCE & TROUBLESHOOTING
6.3

Daily Test

Authorities require that the DSC be checked daily for proper operation to ensure
that it will function properly in the event of distress. Execute the daily test as
below.
1. At the standby display, press the SHIFT key and TEST key in that order. The
following display appears for test.
Test in progress
*** DAILY TEST ***
TX POWER
TX/RX PCB
CPU PCB
CH70 RX PCB : OK
DUP RX PCB : OK
2. To stop the daily test, press the CANCEL key.
If there is any problem, "NG" appears instead of "OK" for offending item. For any NG,
contact a FURUNO agent or representative for advice.
The table below shows the abnormal indications and causes shown in the daily test.
Indication
TX POWER: NG
TX/RX PCB: NG
CPU PCB: NG
CH70 RX PCB: NG
DUP RX PCB: NG
If necessary, refer to Parts Location on subsequent pages.
6-2
(Pop-up display appears momentarily.)
If you have not pressed the PTT switch
: OK
before executing the test, "NO CHECK"
: OK
is displayed.
: OK
FM-8800D only
Result of daily test
Indicates no transmitting output power.
PA module or TX/RX pcb 05P0774 may be damaged.
Indicates abnormal PLL circuit in the TX/RX pcb.
TX/RX pcb 05P0774 may be damaged.
Indicates abnormal loop circuit inside the CPU board.
CPU pcb 05P0773 may be damaged.
Indicates abnormal loop circuit between CPU and CH70
RX pcb. CH70 RX pcb 05P0775 may be damaged.
Indicates abnormal PLL circuit in the DUP RX pcb.
DUP RX pcb 05P0777 may be damaged.
executing
Cause