Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 34)

SM 04L05A01-01E 5-3
Troubleshooting
5
5.3 Troubleshooting Checklist
Trouble Operational
Check Adjust Exchange
Check Item
Power cable connection
Fuse is blown (/P1 option only)
Power ass’y
CPU ass’y
Memory ass’y
Display ass’y
CPU ass’y
Memory ass’y
Display ass’y
Optional terminal ass’y
Battery connector is disconnected?
Battery voltage is low (less than +3.0V)
CPU ass’y
Memory ass’y
Display ass’y
FFC ass’y of the keyboard is
disconnected/broken
Keyboard ass’y
CPU ass’y
Memory ass’y
Display ass’y
FFC ass’y of the LCD is disconnected/
broken
CPU ass’y
Memory ass’y
Display ass’y
LCD ass’y
Input wiring is disconnected
Noise
A/D ass’y
Scanner ass’y
Input is disconnected
Noise
Terminal cover is removed
RJC INT/EXT setting
A/D board ass’y
Input terminal
Scanner board ass’y
Power frequency setting is incorrect
Noise
Floppy disk/Zip disk/PC card drive unit
Power is not
turned ON
FAIL state
Memory cannot
be backed up
Panel key operation
is not normal
LCD is not normal
Measured value
incorrect
Measured
temperature
is incorrect
Measured value
fluctuates
External storage
media is not normal