CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
SAFETY-RELATED COMPONENT WARNING!!ATTENTION AU COMPOSANT AYANT RAPPORT
� LA S?CURIT?!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITHLES COMPOSANTS IDENTIF?S PAR UNE MARQUE 0 SUR LES
MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTSDIAGRAMMES SCH?MATIQUES ET LA LISTE DES PIéCES SONT
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESECRITIQUES POUR LA S?CURIT? DE FONCTIONNEMENT. NE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERSREMPLACER CES COMPOSANTS QUE PAR DES PIéSES SONY
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTSDONT LES NUM?ROS SONT DONN?S DANS CE MANUEL OU
PUBLISHED BY SONY.DANS LES SUPP?MENTS PUBLI?S PAR SONY.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
1. Check the area of your repair for unsoldered or poorly-solderedUnleaded solder
connections. Check the entire board surface for solder splashesBoards requiring use of unleaded solder are printed with the lead-
and bridges.free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
2. Check the interboard wiring to ensure that no wires arethe lead free mark due to their particular size.)
"pinched" or contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly : LEAD FREE MARK
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.Unleaded solder has the following characteristics.
Y Unleaded solder melts at a temperature about 40°C higher than
4. Look for parts which, through functioning, show obvious signsordinary solder.
of deterioration. Point them out to the customer andOrdinary soldering irons can be used but the iron tip has to be
recommend their replacement.applied to the solder joint for a slightly longer time.
5.Check the B+ voltage to see it is at the values specifSoldering irons using a temperied.ature regulator should be set to
6.Flexible Circuit Board Repairingabout 350°C.
Caution: The printed pattern (copper foil) may peel away if the
YKeep the temperature of the soldering iron around 270uC
during repairing.heated tip is applied for too long, so be careful!
Y Strong viscosity
YDo not touch the soldering iron on the same conductor of theUnleaded solder is more viscous (sticky, less prone to flow) than
circuit board (within 3 times).ordinary solder so use caution not to let solder bridges occur such
YBe careful not to apply force on the conductor when soldering
as on IC pins, etc.
or unsoldering.Y Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
DCR-HC23E/HC24E/HC26/HC26E/HC35E_L2
N 4 N |
ACEC
