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9. PROJECTOR

9 - 1 CAUTIONS CONCERNING THE SAFETY FOR HANDLING THE MONITORS.

Before handling the monitors, be sure to read the following explanations and comply with the caution/warning instructions below. Note that the caution/warning symbol marks are used in the instruction.

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 before starting work. Proceeding the work without following the this instruction can cause electric shock and/or malfunctioning. Using the monitor by converting it without obtaining a prior permission is not allowed. SEGA shall not be liable for any malfunctioning and accident caused by said conversion.

CONNECTING THE CRT AND PCB; The monitor's circuit which is divided into the Primary side and Secondary side, is electrically isolated. Do not touch the primary side and the secondary side simultaneously. When making monitor adjustments, use a non-conductive driver and make adjustments without touching any other 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. Failing to observe these instruction can cause a short circuit, malfunctioning, and/or electric shock.

HIGH TENSION VOLTAGE; Some parts of the inside monitor are subject to high tension voltage in excess of 20,000 volts and very dangerous. Therefore , do not touch the monitor interior, and keep free from debris to prevent hazards.

CONNECTING THE CRT AND PCB cont'd; 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 a the time of malfunctioning, be sure to send it in an "as is assembled" condition. If these are disabled, what's charged to said high tension voltage can be discharged, causing a very hazardous situation. Therefore, under no circumstances should it be disassembled.

STATIC ELECTRICITY; Touching the CRT surface sometimes causes you to slightly feel electricity. This is because the CRT surfaces are subject to static and will not adversely affect a 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 sharp edges, etc. and avoid damaging the insulated portions so as not to cause an electric shock and malfunctioning.

For purposes 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 rub with a hard item (a rod with pointed edge, pen, etc.) to or on the CRT surfaces.

> Avoid applying stickers, seals, etc. on the CRT face.

> Removing the alumnuim foils can cause static prevention effects to be lowered.

9 - 2 CLEANING THE SCREEN

Static preventive 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 coarse gauze, etc.

> For smear removing solvent, alcohol (ethanol) is recommended. When using chemical detergent, be sure to follow instructions below:

a. Dilute chemical detergent with water and dip a soft cloth in and then thoroughly wring it out to wipe smears off.

b. Do not use chemical detergents containing an abradant, powder or bleaching agent.

c. Do not use alkaline chemical detergents such as glass cleaner available on the market or solvents such as thinner, etc.

d. Do not rub or scratch the CRT face with hard items such as brushes, scrub brush, etc...

Clean the CRT surfaces once a week. When cleaning, pay attention to the above caution so that the anti-static coating will not come off.

9 - 3 ADJUSTMENT METHOD

Monitor adjustments have been made at the time of shipment. Therefore, do not make further 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 projection fault, resulting in malfunctioning. When making adjustment, utilize a resinous Alignment Screwdriver. Servicing with bare hand or using conductive tools can cause electric shock.

Remove the back door at the rear of the cabinet, and the monitor adjustment kob appears. When cleaning the CRT, be sure to turn switch to OFF and then remove the back door.

1. off the 3 tamperproof screws to remove the back door.

NANAO MONITOR: 2001-5242-24-04 (24K)