JRC NCR-333 Instruction Manual page 80

a. The Diagnosis of equipment (SELF DIAGNOSIS)
Procudure
1) Select 1.SELF DIAGNOSIS, and press the ENT key. Cursor moves to the right side of ":".
2) Press the ▲ ▼ key and select the following items;
START: Self diagnosis is started. However, the diagnostic results are not printed.
ST-PRTN: Self diagnosis is started. After self diagnosis is completed, the diagnosis results are
printed.
CANCEL: Self diagnosis is not started. Cursor returns to
3) Select the "START" or "ST-PRTN", and then press the ENT key.
Self diagnosis starts by the "ROM" test and is ended by the "4209.5 kHz over all test".
During diagnosis, "SELF DIAGNOSIS" of screen title repeats blink.
The buzzer sounds at the last of diagnosis, and check that the buzzer sounds normally. Press CLR key
to stop the beeping.
1.SELF DIAGNOSIS
ROM
RAM
SIO
PS
ANTENNA CHECK
518kHZ
490kHZ
4209.5kHZ OVER ALL TEST:
"OVER ALL TEST" takes about 15 seconds per test.
Whenever one test (OVER ALL TEST) is completed, character string as shown in the following figure is
displayed. When "*" is displayed in a character string, the test result is NG.
1.SELF DIAGNOSIS
ROM
RAM
SIO
PS
ANTENNA CHECK
518kHZ
490kHZ
4209.5kHZ OVER ALL TEST:
THE QUICK BLOWN FOX JUMPS OVER
THE LAZY DOG.123456789.,?()=/+-:
Caution
When the result of the malfunction is displayed, contact our service center or an agency as soon as
possible after referring to troubleshooting of Chapter 7.
The list of diagnosis items
Diagnosis items
ROM
RAM
SIO
PS
ANTENNA CHECK
518KHZ OVER ALL TEST
490KHZ OVER ALL TEST
4209.5KHZ OVER ALL TEST
6-48
: START
: GOOD
: GOOD
: GOOD
: GOOD
: GOOD
OVER ALL TEST:
OVER ALL TEST:
: START
: GOOD
: GOOD
: GOOD
: GOOD
: GOOD
OVER ALL TEST: GOOD
OVER ALL TEST:
Explanation
The data memory and the program memory are checked.
When the program memory is abnormal (NG), '[1]' is displayed,
and when the data memory is abnormal, '[2]' is displayed.
The memory for temporarily storage is checked.
Serial interfaces are checked.
When the 'ECDIS/GPS' port is abnormal (NG), '[1]' is displayed,
and when the 'Maintenance/Printer' port is abnormal, '[2]' is
displayed, and when the 'DISP' port is abnormal, '[3]' is
displayed.
The power supply part is checked.
The DC voltage of the NAVTEX antenna is checked.
Internal receiver (RX1) is checked.
Internal receiver (RX2) is checked.
Internal receiver (RX3) is checked.
1.SELF DIAGNOSIS.
OVER ALL TEST:
"OVER ALL TEST" is the test which outputs
a test signal from the inside of the circuit,
and receives the signal from each receiver.
Test signal (Character strings):
THE QUICK BLOWN FOX JUMPS OVER
THE LAZY DOG. 123456789.,?()=/+-:
Corrective Action
Replace CMJ-501N.
Replace CMN-2333.