JRC JHS-770S Instruction Manual page 127

Unit Name Test Item
ROM
RAM
SIO
Transceiver
MODEM
Loop
PS(DC/DC)
Printer
ROM
RAM
SIO
LCD&LED
Controller
Printer
Speaker
Contents
･ ROM1 (Flash) read/write
･ ROM2 (EEP) read/write
･ RAM (SDRAM) read/write
･ RS-485 line loop-back test
･ MODEM1 (M0-M1) loop-back test
･ MODEM2 (M1-M0) loop-back test
･ Loop1 (TX-RX) loop-back test
･ Loop2 (TX-WKR) loop-back test
･ DC/DC PWR output voltage check
･ Print out test
･ ROM1(Flash) read/write
･ ROM2(EEP) read/write
･ RAM(SDRAM) read/write
･ RS-485 line loop-back test
･ Every pixel (dot) of the LCD and
ALM lamp display test
･ Print out test
･ Sound test
Maintenance & Inspection
Results
OK :Normal
ROM1 NG :ROM1 error
ROM2 NG :ROM2 error
ROM12 NG :ROM1 & 2 error
OK :Normal
NG :Error
OK :Normal
NG :Error
OK :Normal
MODEM1 NG :MODEM1 error
MODEM2 NG :MODEM2 error
MODEM12 NG :MODEM1 & 2 error
OK :Normal
Loop1 NG :Loop1 error
Loop2 NG :Loop2 error
Loop12 NG :Loop1 & 2 error
OK :Normal
NG :Error
- Check visually if printed out
correctly.
- After performed, this line on the
screen shows "DONE".
OK :Normal
ROM1 NG :ROM1 Error
ROM2 NG :ROM2 Error
ROM12 NG :Error in both
OK :Normal
NG :Error
OK :Normal
NG :Error
- Check visually if every dot and
the red and green ALM lamp
alternately work normally for 3
seconds.
- After performed, this line on the
screen shows "DONE".
- Check visually if printed out
correctly.
- After performed, this line on the
screen shows "DONE".
- Check aurally if the 1500Hz tone
sounds correctly. After that, press
ENT on the popup screen to finish
this process.
- After performed, this line on the
screen shows "DONE".
6-3