Panasonic PT-EZ770Z

2
PREFACE
The service technician is required to read and follow the “Safety Precautions” and “Important Safety Notice” in this service manual.
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It dose 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 ser-
vice 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
CAUTION
Precaution
Never use this projector at an altitude of 2 700m or higher.
Using this projector at high altitude, consult your dealer or Authorized Service Center about preparations.
About lead free solder (PbF)
This projector 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.
Notes:
• 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 func-
tion and set it to 370 ± 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(speciedonitas“PbF”)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soldertodoublelayeredP.CBoards,checkthecomponentsideforexcesssolderwhichmayowontotheoppositeside.
  AbouttheidenticationoftheleadfreesolderP.C.Board.
  FortheP.C.Boardwhichappliesleadfreesolder,thesymbolasshowninthegurebelowisprintedorstampedonthesurface
or the back of P.C.Board.
For US
There are special parts used in Panasonic Projectors which are important for safety. These parts are shaded on the schematic
diagram.Itisessentialthatthesecriticalpartsshouldbereplacedwithmanufacturer’sspeciedpartstopreventshock,re,orother
hazards. Do not modify the original design without permission of PANASONIC SOLUTIONS COMPANY.
IMPORTANT SAFETY NOTICE
WARNING:
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 and, if not installed and used in accordance with the instruc-
tions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation.
If this equipment dose cause harmful interference to radio or television reception, which can be determined by turning the equipment
o󰀨andon,Theuserisencouragedtotrytocorrecttheinterferencebyoneormoreofthefollowingmeasures.
CAUTION:
Anyunauthorizedchangesormodicationstothisequipmentwillvoidtheuser’sauthoritytooperatethisdevice.
PbF