JRC JSS-2500 - Page 157

Maintenance & Inspection
6-5
Transceiver
(Cont’d)
WKR
MODEM
 Memory1 :FROM operation
 Memory2 :EEPROM operation
 Memory3 :SDRAM operation
 PLL lock :State of PLL for DDS clock

Band1-RX BPF1 :2187.5 kHz DSC loop

Band2-RX BPF2 :4207.5 kHz DSC loop

Band3-RX BPF3 :6312.0 kHz DSC loop

Band4-RX BPF4 :8414.5 kHz DSC loop

Band5-RX BPF5 :12577.0 kHz DSC loop

Band6-RX BPF6 :16804.5 kHz DSC loop

Band7-RX BPF7 :Wide-band filter operation

DSC/NBDP loop1 :AF modem loop

DSC/NBDP loop2 :AF modem & TRX loop
OK: Normal
NG: Abnormal
(3) NCM-2150 controller / NDZ-227 Data Terminal
Unit Name Test Item Contents Results
Controller/Data
terminal
DGT CKT
 Memory1 :FROM operation
 Memory2 :EEPROM operation
 Memory3 :SDRAM operation
OK: Normal
NG: Abnormal
AF output AF connection to TRX
OK: Normal
NG: Abnormal
LCD&LED
Screen and ALM lamp display operation
Note: Check visually if every dot and red and
green ALM lamp alternately work normally
for 3 seconds.
DONE
Speaker
Sound test
Note: Check if the 1500 Hz tone sounds correctly.
After that, press ENT on the popup screen
to finish this process.
DONE
Printer
Print out test
Note: When the printer is connected, check the
print result in the printed data output.
DONE
DTE
・ DTE memory1 :FROM operation
・ DTE memory2 :SDRAM operation
OK: Normal
NG: Abnormal
・ DTE LCD&LED :Data terminal screen and
lamp operation
Note: Check visually if every dot alternating colors
of red, green, blue and white with the lamp
blink work normally for 5 seconds.
DONE
・ DTE buzzer :DTE buzzer operation
Note: Check if the buzzer sounds correctly. After 3
seconds, sounding stops automatically
DONE