Sony hc28 manual

Check the entire board surface for solder splashes and bridges. Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement. Look for parts which, through functioning, show obvious signs of deterioration.

Boards requiring use of unleaded solder are printed with the lead- free mark LF indicating the solder contains no lead. Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.

Unleaded solder has the following characteristics. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about Caution: The printed pattern copper foil may peel away if the heated tip is applied for too long, so be careful!

Unleaded solder is more viscous sticky, less prone to flow than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. Point them out to the customer and recommend their replacement. Look for parts which, through functioning, show obvious signs of deterioration. Unleaded solder Boards requiring use of unleaded solder are printed with the lead- free mark LF indicating the solder contains no lead.

Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size. Unleaded solder has the following characteristics. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to about Caution: The printed pattern copper foil may peel away if the heated tip is applied for too long, so be careful! Unleaded solder is more viscous sticky, less prone to flow than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc.

It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. After correcting the original service problem, perform the following. Danger of explosion if battery is incorrectly replaced.