11 - 1 CAUTIONS AND WARNINGS
CONCERNING THE SAFETY FOR HANDLING MONITORS
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11 . MONITOR
11 - 1 CAUTIONS AND WARNINGS
CONCERNING THE SAFETY FOR HANDLING MONITORS
When performing such work as installing and removing the monitor, inserting and disconnecting the external connectors to and from monitor interior and the monitor, be sure to disconnect the power connector (plug) before starting the work. Proceeding the work without following this instruction can cause electric shock or malfunctioning. Using the monitor by converting it without obtaining a prior permission is not allowed. SEGA shall not be held liable for any malfunctioning and accident caused by said conversion.
Primary side and secondary side
The Monitor's circuit which is divided into the Primary Side and Secondary
Side, is electrically isolated. Do not touch the primary side, or do not
touch the primary side and the secondary side simultaneously. Failing to
observe the instruction can cause electric shock and this is very dangerous.
When making the monitor adjustments, use a non-conductive driver and make
adjustment without touching any part other than the Adjustment V.R. and
knob. Also, be sure not to cause a short circuit to the Primary side and
Secondary side. If short circuited, it can cause electric shock or malfunctioning,
which is very dangerous.
High-tension Voltage
Some of the parts inside the monitor are subject to high-tension voltage
in excess of 20,000 volts and very dangerous. Therefore, do not touch the
monitor interior. Should soldering and paper wastes, etc., be mixed in the
interior, turn the power off so as not to cause malfunctioning or fire hazard.
Connecting the CRT and PCB
For combining the CRT and PCB, use the specified part no. to maintain the
status of adjustments made at the factory. The anode of the CRT itself will
be accumulatively charged as time elapses, generating high-tension voltage
which is very dangerous. The monitor should be used with the Chassis, CRT
and PCB assembled. When repair, etc., is required at the time of malfunctioning
be sure to send it in an "as is assembled" condition. If these
are disassembled, what's charged to said high-tension voltage can be discharged,
causing a hazardous situation. Therefore, under no circumstances should
it be disassembled.
Static Electricity
Touching the CRT surface causes you to slightly feel electricity. This is
because the CRT surfaces are subject to static and will not adversely affect
the human body.
Installation and Removal
Ensure that the Magnetizer Coil, FBT (Fly-Back Transformer), Anode Lead
and Focus Lead are not positioned close to the sheet metal work's edges,
etc., and avoid damaging the insulated portions so as not to cause an electric
shock and malfunctioning (For the name of parts, refer to the above figures).
11 - 2 CAUTION TO BE HEEDED WHEN CLEANING THE CRT SURFACES
When water, and volatile chemicals such as benzene, thinner, etc., spill on the screen surface, it may be subject to damage, therefore, do not use them. Also, since the surfaces are susceptible to damage, refrain from rubbing them with a hard material or using a duster.
For the purpose of static prevention, special coating is applied to
the CRT face of this product. To protect the coating, pay attention to the
following points. Damaging the coating film can cause electric shock to
the customers. For the caution to be heeded when cleaning, refer to the
Section of Periodic Inspection Table.
Do not apply or rub with a hard item (a rod with pointed edge, pen, etc.) to or on the CRT surface.
Avoid applying stickers, seals, etc. on the CRT face.
Do not remove aluminum foils from the CRT corners. Removing the aluminum foils can cause static prevention effects to be lowered.
Static prevention coating is applied to the CRT surfaces. When cleaning, pay attention to the following points. Peeling off static preventive coat can cause electric shock.
Remove smears by using a dry, soft cloth (flannels, etc.) . Do not use a coarse gauze, etc.
For smear removing solvent, alcohol (ethanol) is recommended. When
using chemical detergent, be sure to follow instructions below:
*Dilute chemical detergent with water and dip a soft cloth in and then thoroughly
wring it to wipe smears off.
*Do not use a chemical detergent containing an abradant, powder or bleaching
agent.
*Do not use alkaline chemical detergents such as "glass cleaner"
available on the market or solvents such as thinner, etc.
Do not rub or scratch the CRT face with hard items such as brushes, scrub brush, etc.
11 - 3 ADJUSTMENT METHOD
Monitors adjustments have been made at time of shipment. Therefore, do not make adjustment without a justifiable reason. Adjusting the monitor which contains high tension parts is dangerous work. Also, an erroneous adjustment can cause deviated synchronization and image fault, resulting in malfunctioning.
When making adjustment, utilize a resinous Alignment Rod. Servicing with bare hand or using conductive tools can cause electric shock.
To make monitor adjustment, take off the 2 truss screws from the CRT ADJUST PANEL portion. The Adjustment BAD appears when the screws are removed.
There are 2 Monitor Manufacturers (NANAO and SANWA.) The Adjustment Control Panel Layout differs depending on the specific maker. When performing the adjustment, check the Maker by referring to the following.
