DISCO DAD 2H/6T, Troubleshooting Manual

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E-8
WHAT AND HOW TO CHECK REMEDIAL ACTION
3-1. (1) Check or switch of X-axis; the procedure
is the same as 1-4 (1).
3-1. (1) Same as 1-4 (1).
(2) Check voltage at XL or XR terminal of PB6
(EAUA--087703) with a tester (synchroscope).
(2) If it is approx. 0V, the limit switch is normal, and
therefore check other parts. If it is approx. 5V, repair
(replace) the limit switch. (Also check the
connecting cable.)
(3) If no fault is found in item (2), replace the board
(PB6) with a spare one.
(3) If there is no change, check other parts. If it operates
correctly, the board is defective.
(4) Check the operation after replacing PB7 (EAUA--
087800) with a spare P.C. board.
(4) Same as in (3). (Refer to Section 6 for checking
signals.)
(5) Check the operation after replacing PB9 (EAUA--
023600) with a spare P.C. board.
(5) Same as in (3). (Refer to Section 7 for checking
signals.)
(6) Check the cable connecting MF4 and Motor. (6) If the cable is open circuit, repair it.
3-2. (1) Check the operation replacing the panel P.C. board. 3-2. (1) If there is no change, check other parts.
(Also see items (2) and (3).)
(2) Check the operation after replacing PB6 (EAUA--
087703) with spare P.C. board.
(2) Same as in (1).
(3) Check the operation after replacing PB7 (EAUA--
087800) with spare P.C. board.
(3) Same as in (1).
3-3. (1) Same as in 3-1 (2). 3-3. (1) If it is approx. +5V at the limit position, see item (2).
If it is approx. 0V, repair (replace) the limit switch.
(Also check connecting cable.)
(2) Same as in 3-1 (3). (2) Same as in 3-1 (3).
3-4. (1) Check the DATA contents. 3-4. (1) If the data is correct, check other points. If the data is
incorrect, re-enter data. (When the data is not stored,
refer to 2-4.)
(2) Check and switches of Y-axis: The
procedure is the same as in 3-1. (Terminals to be
checked are YF and FR.)
(2) Same as in 3-1.
3-5. (1) Check and switches of Z-axis: The
procedure is the same as in 3-1. (Terminals to be
checked are ZU and ZD)
3-5. (1) Same as in 3-1.
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