
B–62755EN/01
8.TROUBLESHOOTING
295
8
TROUBLESHOOTING
This chapter describes troubleshooting procedure. If your system
employs FANUC CONTROL MOTOR α series, also refer to its manuals
listed in preface of this manual.
8.1 CORRECTIVE ACTION FOR FAILURES 297. . . . . . . .
8.2 POWER CANNOT BE TURNED ON 299. . . . . . . . . . . .
8.3 NO MANUAL OPERATION NOR AUTOMATIC
OPERATION CAN BE EXECUTED 302. . . . . . . . . . . . .
8.4 JOG OPERATION CANNOT BE DONE 306. . . . . . . . . .
8.5 HANDLE OPERATION CANNOT BE DONE 310. . . . .
8.6 AUTOMATIC OPERATION CANNOT BE DONE 313. .
8.7 CYCLE START LED SIGNAL HAS
TURNED OFF 321. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.8 NOTHING IS DISPLAYED ON CRT 323. . . . . . . . . . . . .
8.9 ALARM 85 TO 87 (READER/PUNCHER
INTERFACEALARM) 325. . . . . . . . . . . . . . . . . . . . . . . .
8.10 REFERENCE POSITION DEVIATES 333. . . . . . . . . . . .
8.11 ALARM 90 (REFERENCE POSITION
RETURN IS ABNORMAL) 334. . . . . . . . . . . . . . . . . . . .
8.12 ALARM 300 (REQUEST FOR REFERENCE
POSITION RETURN) 336. . . . . . . . . . . . . . . . . . . . . . . . .
8.13 ALARM 301 TO 305
(ABSOLUTE PULSE CODER IS FAULTY) 337. . . . . . .
8.14 ALARM 306 TO 308 (ABSOLUTE
PULSE CODER BATTERY IS LOW) 349. . . . . . . . . . . .
8.15 ALARM 350 (SERIAL PULSE
CODER IS ABNORMAL) 342. . . . . . . . . . . . . . . . . . . . .
8.16 ALARM 351 (SERIAL PULSE CODER
COMMUNICATION IS ABNORMAL) 343. . . . . . . . . . .
8.17 ALARM 400 (OVERLOAD) 344. . . . . . . . . . . . . . . . . . . .
8.18 ALARM 401 (*DRDY SIGNAL TURNED OFF) 346. . .
8.19 ALARM 404 and 405
(*DRDY SIGNAL TURNED ON) 348. . . . . . . . . . . . . . .
8.20 ALARM 410 (EXCESSIVE POSITION ERROR
AMOUNT DURING STOP) 349. . . . . . . . . . . . . . . . . . . .
8.21 ALARM 411 (EXCESSIVE POSITION ERROR
DURING MOVE) 350. . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.22 ALARM 414 (DIGITAL SERVO SYSTEM IS
ABNORMAL) 352. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.23 ALARM 416 (DISCONNECTION ALARM) 364. . . . . . .
8.24 ALARM 417 (DIGITAL SERVO SYSTEM IS
ABNORMAL) 365. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.25 ALARM 700 (OVERHEAT AT CONTROL SIDE) 366. .
8.26 ALARM 704 (SPINDLE SPEED FLUCTUATION
DETECTION ALARM) 367. . . . . . . . . . . . . . . . . . . . . . .