7.1 Self Test
7-4
Rx Test
Tx Test
ZCZC AZBB <- |T HIS IS AN I NTERNAL TES
T MESSAGE.<-|ABCDEFGHIJKLMNOPQRSTUV
WXYZ,0123456789 - ? * $ ! & # ( )
/ , ’ = -? + -> | NNNN
ZCZC AZBB <- |T HIS IS AN I NTERNAL TES
T MESSAGE.<-|ABCDEFGHIJKLMNOPQRSTUV
WXYZ,0123456789 - ? * $ ! & # ( )
/ , ’ = -? + -> | NNNN
ZCZC AZBB <- |T HIS IS AN I NTERNAL TES
T MESSAGE.<-|ABCDEFGHIJKLMNOPQRSTUV
WXYZ,0123456789 - ? * $ ! & # ( )
/ , ’ = -? + -> | NNNN
Int’l Rx Data
Local Rx Data
Int’l Result : OK
Local Result : OK
Hit any key
If the “Result” is “NG”, replace the RCV board. In the reception test, messages
received at 518 kHz only can be printed by a printer.
Note:
During Rx Test, the power supply (+9 VDC) to the pre-amp unit is turned off.
Fig. 7.1.2 Overview of Reception Test circuit
6. The screen returns to the Service menu screen when any key other than the power key
is pressed or when there is no key operation for one minute or more.
+9V
AVR
LO SW DC
RF
SW
MOD
RX Local-2
RX Local-1
Test Signal
Test
Signal
+12V
1700Hz+85Hz
Test OFF
Test Start
518kHz
TD-A/B
490kHz
TD-A/B
RD-A
RD-B
RCV (08P3227)
RX 1
518kHz
RX 2
490kHz
RX
518kHz
490kHz
RX
4209.5kHz
CPU
(08P3225)
NX-700A/B
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