Nipro SURDIAL, Руководство по обслуживанию

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8.12-2
Replacement
DC+24V switching regulator
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CAUTION
z Replace switching regulator after disconnecting power plug from receptacle. Only power SW
OFF is insufficient to avoid danger because AC supply placed at left side in DENSO box is not
disconnected, potentially causing electric shock.
z Handle switching regulator under care not to be charged with static electricity.
z Power rating of switching should confirm to that power source of machine. Otherwise, fire and/or
machine failure may be caused.
z Inside of switching regulator has heat parts when power turns on.
DO NOT touch the part. Otherwise, a burn may be caused.
Fix DC+24V switching regulator by screws from right side of DENSO box.
Replace the board by removing right cover from DENSO box.
(1) Turn off power SW of machine.
(2) Disconnect power plug from receptacle.
(3) Remove right and left covers from upper part and DENSO box of machine.
(4) Remove funstone terminal which connect to CN411 on the SUB-board and DC+24V port on
the TERMINAL BLOCK1.
(5) Disconnect all connectors which connect to main board and DSUB board from right side of
DENSO box of machine.
Remove all the disconnected tube from DENSO box.
(6) Loosen all screws used to fix DENSO box. Move DENSO box to the left side of machine.
(7) Loosen four screws used to fix right DENSO box from right side of machine. Remove right
DENSO box from rear side of machine. Do not remove main board from DENSO box in this
case.
(8) Confirm three screws used to fix switching regulator after removing right DENSO box.
Loosen these screws to remove switching regulator.
(9) Prepare new switching regulator. It is required to set power source (AC110V/AC230V).
Refer as Fig. 8.12-2 for setting power source.
(10) Remove all harnesses from previous switching regulator and then connect these harnesses to
new one.
(11) Attach the new switching regulator under care that harnesses is not pinched between DENSO
box and switching regulator.
(12) Attach right DENSO box.
(13) Fix DENSO box to machine flame.
(14) Return the removed connectors and tubes to the original positions.
(15) Confirm the setting of input voltage.
(16) Insert power plug in receptacle.
(17) Turn on power SW of machine.
(18) Check correct function of machine.
(19) Return the removed covers to the original positions.