D1_ServiceManual_e.pdf - 第44页
4 Electrical Section 4-4 Control Board Handling Control Board Note the followings when handl ing PC boards. z Do not touch control boards by wet hands. z Do not handle control boards where t here are metal chips around. …
4 Electrical Section
4-3
■ Write Protect
To prevent formatting or overwriting data by mistake, floppy disks can be write-protected. Data can be read
from write-protected floppy disks, but cannot be written on them. When you slide the plastic tab to open
the window, the floppy disk is write-protected. When the window is closed, data can be written on the
floppy disk.
Not protectedProtected
Cleaning of Disk Drive
The head of a floppy disk drive gets dirty from repetitive writing and loading. If you continue using it
without any cleaning, malfunctions may occur and it also shortens the life of the floppy disk. Clean monthly
the head of the floppy disk drive with a conventional head cleaner .
4 Electrical Section
4-4
Control Board
Handling Control Board
Note the followings when handling PC boards.
z Do not touch control boards by wet hands.
z Do not handle control boards where there are metal chips around.
z To handle control boards in the control rack, never touch the connecting portion where gold is plated. If
the connecting portion is covered with dust, the machine doesn't work properly. Clean with alcohol.
Gold Plating
4 Electrical Section
4-5
Adjustment of Board Detection Sensors
■ Sensors
z LG0-M90H3-00X PHOTO SENSOR EX-22A (SUNX)
･ Entrance Sensor
･ Exit Sensor
･ Entrance Buffer Arrival Sensor
■ Adjustment
z LG0-M90H3-00X PHOTO SENSOR
① Place a production board on the conveyor.
② Turn the Sensitivity Adjuster fully counterclockwise to the sensitivity minimum position. (The
adjuster turns 3/4 rotation overall. If it is turned clockwise, the sensitivity increases, if turned
counterclockwise, the sensitivity decreases.)
③ Turn the Sensitivity Adjuster clockwise slowly and confirm the point “A” where the Orange LED
lights up.
④ Remove the board and continue to turn Sensitivity Adjuster clockwise and confirm the point “B”
where the Orange LED lights up. (If the sensor does not light up, just turn the adjuster clockwise to the
end.)
⑤ Turn the Sensitivity Adjuster to the center of “A” and “B”. Determine the point as a detecting point.
⑥ Put back the board on the conveyor. Be sure that the Orange LED and Green LED light up at the same
time. When you remove the board, only the Green LED should light up.
NOTE: If your machine is equipped with the CE safety conveyor cover, make sure to stick the black rubber sheet
(LG0-M9AA1-00 GOM) on the bottom surface of the cover to prevent mis-detection.
Operation Indicator (Orange LED)
(Indicators are located on the back.)
Stability Indicator (Green LED)
Sensitivity Adjuster
MAX