Panasonic PT-53X54J Service Manual

Also see for PT53X54J - 53" PROJECTION TV HD: Operating instructions Manual Service manual Service manual

Panasonic PT-53X54J Service Manual Manual pdf 11 page image

http://tsn.pstc.panasonic.com/viewing/NA/PT-53X54J/SVC/s0400000000x.html4 Service notesTOP PREVIOUS NEXTNOTEThese components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins ofthe ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will breakthe component loose.Leadless chip component (surface mount)Chip components must be replaced with identical chips due to critical foil track spacing. There are no holes in the boardto mount standard transistors or diodes. Some chips capacitor or resistor board solder pads may have holes through theboard,however the hole diameter limits standard resistor replacement to 1/8 watt. Standard capacitor may also be limited forthe same reason. It is recommended that identical components be used.Chip resistor have a three digit numerical resistance code, 1st and 2nd significant digits and a multiplier. Example: 162 =1600 or 1.6kΩ resistor, 0 = 0Ω (jumper).Chip capacitors generally do not have the value indicated on the capacitor. The color of the component indicates thegeneral range of the capacitance.Chip transistors are identified by a two letter code. The first letter indicates the type and the second letter, the gradeof transistor.Chip diodes have a two letter identification code as per the code chart and are a dual diode pack with either common anodeor common cathode. Check the parts list for correct diode number.Component removal1. Use solder wick to remove solder from component end caps or terminal.2. Without pulling up, carefully twist the component with tweezers to break the adhesive.3. Do not reuse removed leadless or chip components since they are subject to stress fracture during removal.Chip component installation1. Put a small amount of solder on the board soldering pads.2. Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to thepad area with a 30 watt iron until solder flows. Do not apply heat for more than 3 seconds.How to replace flat ic (required tools)1. Remove the solder from all of the pins of a Flat IC by using a desolder braidhttp://tsn.pstc.panasonic.com/viewing/NA/PT-53X54J/SVC/s0400000000x.html (1 of 3) [23/04/2012 12:16:05 p.m.]