PT-TW343RE - Panasonic Projector Service Manual (repair manual). Page 3

The service technician is required to read and follow the "Safety Precautions" and "Important Safety Notice"  
in this service manual. 

If using of this projector at an altitude of lower than 1 400m, set [Hight Land] to "OFF". 
 

Failure to observe this may cause malfunctions. 

If using of this projector at an altitude of higher than 1 400m and lower than 2 700m, set [Hight Land] to "ON 1". 
 

Failure to observe this may cause malfunctions. 

If using of this projector at an altitude of higher than 2 700m and lower than 3 000m, set [Hight Land] to "ON 2". 
 

Failure to observe this may cause malfunctions. 

Never use this projector at an altitude of 3 000m or higher. 
 

Failure to observe this may cause malfunctions. 

 

(Refer to "PROJECTOR SETUP" menu in Operating Instructions.)

Using this projector at high altitude, consult your dealer or Authorized Service Center about preparations. 

This project is using the P.C. Board which applies lead free solder. 
Use lead free solder in servicing from the standpoint of antipollution for the global environment. 

●  Lead free solder: Sn-Ag-Cu (tin, silver and copper) has a higher melting point (approx. 217°C) than standard solder. Typically the 

melting point is 30-40°C higher. When servicing, use a high temperature soldering iron with temperature limitation function and set it to 

370°C±10°C.

●  Be precautious about lead free solder. Sn-Ag-Cu (tin, silver and copper) will tend to splash when heated too high (approx. 600°C or 

higher). 

●  Use lead free solder for the P.C. Board (specified on it as "PbFree") which uses lead free solder. (When you unavoidably use lead 

solder, use lead solder after removing lead free solder. Or be sure to heat the lead free solder until it melts completely, before applying 
lead solder.)

● After soldering to double layered P.C. Boards, check the component side for excess solder which may flow onto the opposite side. 

About the identification of the lead free solder P.C. Board. 
For the P.C. Board which applies lead free solder, the symbol as shown in the figure below is printed or stamped on the 
surface or the back of the P.C. Board. 

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of 
the FCC Rules. 
These limits are designed to provide reasonable protection against harmful interference in a residential installation. 
This equipment generates, uses and can radiate radio frequency energy. If not installed and used in accordance with the 
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference 
will not occur in a particular installation. 
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning 
the equipment off and on, the user is recommended to try to correct the interference by one or more of the following 
measures: 
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver. 
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 

- Consult the dealer or an experienced radio or TV technician for help. 
CAUTION: Any unauthorized changes or modifications to this equipment will void the users authority to operate. 

This service manual is designed for experienced repair technicians only and is not designed for use by 
the general public. 
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in 
attempting to service a product. 

Products powered by electricity should be serviced or repaired only by experienced professional 
technicians. Any attempt to service or repair the product or products dealt with in this service 
information by anyone else could result in serious injury or death. 

WARNING: Use UV Radiation eye and skin protection during servicing