Servicing Notes - Sony TA-ZH1ES Service Manual

TA-ZH1ES
The SERVICING NOTES contains important information for servicing. Be sure to read this section before repairing the unit.
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)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
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 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
For the electric shock prevention, perform the discharge process-
ing by connecting the resistor at both ends of capacitor with refer-
ring to the fi gure below.
Note: Resistor for perform the discharge, be sure to using a resistor of
800 /2 W or higher.
– DIGITAL Board (Side B) –
"PROTECTOR" APPEARS IN THE DISPLAY WINDOW
"PROTECTOR" appears if an abnormal current is carried on the
headphone jack, or the temperature in the amplifi er rises abnor-
mally. In this case, remove the headphone plug from the amplifi er,
then press [1] (power).
4
SECTION 1

SERVICING NOTES

800 /2 W
C108
DESTINATION IDENTIFICATION
Distinguish by Part No. and Destination code of the model number
label on the bottom side of the main unit.
MODEL NUMBER LABEL
US, CND, CEL
– Bottom view –
CH
Destination
CEL model
CH model
US, CND models
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
• Abbreviations
CH : Chinese model
CEL : European, East European, CIS area, Middle East area,
South East Asia area, Hong Kong, Korean, Australian
and New Zealand models
CND : Canadian model
NOTE OF REPLACING THE ELECTRICAL PARTS ON
EACH BOARDS FOR REPAIRING
Among mounted electrical parts on each boards, only parts that
are described in the electrical parts list can be replaced for repair.
The parts that are not described in the electrical parts list cannot be
replaced with single for repairing.
Destination code
Part No.
Destination code
Part No.
Destination
Part No.
code
4-594-840-0[] CEL
4-594-842-0[] CN4
4-599-213-0[] UC2