Polaroid PLA-4200M, Service Manual

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PDP TV SERVICE MANUAL
Notice: This service manual is only read and used by
professionals. The repairman should review the part of
safety precaution before work.
TO PREVENT POSSIBLE DANGER,DAMAGE, AND BODILY HARM, PLEASE CONSIDER
1.Safety instruction
AND OBSERVE ALL CAUTIONS CONTAINED IN THIS PARAGRAPH.
A.Warning
If you don’t consider the following warning before maintenance, it could result in death or serious injury.
(1) The PDP module is controlled by voltage about 350V. If you need to handle the module during operation or just
after power-off, you must take proper precautions against electric shock and never touch the drive circuit
portion and metallic part of PDP module.
The capacitors in the drive circuit portion remain temporarily charged even after the power off. After turning
off the power, you must be sure to wait at least one minute before touching the module. If the remainder of
voltage is strong enough, it could result in electric shock.
(2) Do not use any other power supply voltage than the specified voltage in this product specifications. If you use
deviated power voltage from the specifications, it could result in fire hazard or product failure.
(3) Do not operate or install under the deviated surrounding from the environmental specification such as in
moisture or rain; near water-for example, bath tub, laundry tub, kitchen sink; in a wet basement; or near a
swimming pool; and also near fire or heater for example, near or over radiator heat resistor; or where it is
exposed to direct sunlight; or somewhere like that. If you use the PDP module in places above, it could result in
electric shock, fire hazard or product failure.
(4) If any foreign objects (e.g. water, liquid and metallic chip or dust) entered the PDP module, the power supply
voltage to the PDP module must be turned off immediately. Also never push objects of any kind into the PDP
module as they may touch dangerous voltage point or make short circuits that could result in fire hazard or
electric shock.
(5) If smoke, offensive smell or unusual noise should come from the PDP module, the power supply voltage to the
PDP module must be turned off immediately.
Also, when the PDP screen cannot display any picture after the power-on or during operation, the power
supply must be turned off immediately. Never continue to operate the PDP module under these conditions.
6 Do not disconnect or connect the PDP module’s connector while the power supply is on, or just after power off.
Because the PDP module is operated by high voltage, and the capacitors in drive circuit remain temporarily
changed even after the power is turned off. If you need to disconnect it, you have to wait at least one minute
after power off.
7 Do not disconnect or connect the power connector by wet hands. The voltage of the product may be strong
enough to cause an electric shock..
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