M4serviceManual_e.pdf - 第70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
Electrodes on Feeder / Feeder Bank
When electrodes on the feeder bank and the tape feeder get dirty, clean them as follows:
NOTE: If the electrodes are touched by hand or have come into contact with foreign matter, cleaning is
recommended even if no dirt can be observed visually.
ACTION: Clean the electrodes by wiping off dust gently with a dry cotton swab or non-woven fabric. When cleaning
them, check that the pins are not bent. If they are bent excessively, contact i-PULSE for repair. Continuing
to use them if the pins are bent may scratch the contact surface of the feeder bank.
Do not use alcohol, water base detergents and organic solvent, such as
thinner, benzene and acetone.
Do not use sandpaper and tools with sharp blade or edge, such as a knife and
a screwdriver.
NOTE: If they get stubborn stains, try not to get rid of them forcedly. Please contact us.
Cotton swab
Pin Electrodes on feederElectrodes on feeder bank
Cotton swab