Read Sony HT-RT5 Service Manual online
HT-RT5
4
SECTION 1
SERVICING NOTES
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
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
• 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.
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
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.
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.
also be added to ordinary solder.
NOTE OF PERFORMING THE OPERATION CHECK IN
THE STATE THAT HEAT SINK WAS REMOVED
When performing the operation check in the state that this unit was
disassembled, it is possible to perform the operation check in the
state that heat sink was removed. But don’t perform the operation
check in the long time, and perform the operation check in the
volume state as low as possible.
THE STATE THAT HEAT SINK WAS REMOVED
When performing the operation check in the state that this unit was
disassembled, it is possible to perform the operation check in the
state that heat sink was removed. But don’t perform the operation
check in the long time, and perform the operation check in the
volume state as low as possible.
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
When checking the board, for the electric shock prevention, con-
nect the resistors to both ends of capacitors to discharge the capaci-
tor as shown in the fi gure below.
When checking the board, for the electric shock prevention, con-
nect the resistors to both ends of capacitors to discharge the capaci-
tor as shown in the fi gure below.
– SWITCHING REGULATOR (3L408W)
(Conductor Side) –
(Conductor Side) –
800
:/2 W
(for C201)
800
:/2 W
(for C207)
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
The following abbreviations for model destinations are used in this
service manual.
• Abbreviations
AR :
AR :
Argentina
model
AUS :
Australian
model
CH
: Chinese model
CND : Canadian model
E3
E3
: African model (Except for Kenyan, Tanzania, Nigerian)
EA3 :
Saudi Arabia, UAE, Kuwait, Iraqi, Kenyan, Tanzanian and
Nigerian models
Nigerian models
LA
: Latin American model (Except for Brazilian, Argentina)
SP
: Singapore model
The SERVICING NOTES contains important information for servicing. Be sure to read this section before repairing the unit.
MODEL IDENTIFICATION
Distinguish by Part No. and Destination code on the bottom side
of a main unit.
Distinguish by Part No. and Destination code on the bottom side
of a main unit.
– Bottom view –
MODEL NUMBER LABEL
Part No.
Destination code
Part No.
Destination code
EA3
Except EA3
Destination
Part No.
Destination code
US, CND
4-570-318-0[]
UC2
AEP
4-570-319-0[]
CEL
UK
4-570-326-0[]
CEK
AUS
4-572-570-0[]
AU1
EA3
4-572-571-0[]
EA3
E3
4-572-573-0[]
E3
SP
4-572-574-0[]
SP1
LA
4-572-575-0[]
LA9
CH
4-572-576-0[]
CN4
AR
4-572-577-0[]
AR2
ADVANCE PREPARATION WHEN CONFIRMING OP-
ERATION
All of the units included in the HT-RT5 (SA-RT5/SA-WRT5/SA-
SLRT5/SA-SRRT5/Remote control) are required to confi rming
operation of SA-RT5. Check in advance that you have all of the
units.
ERATION
All of the units included in the HT-RT5 (SA-RT5/SA-WRT5/SA-
SLRT5/SA-SRRT5/Remote control) are required to confi rming
operation of SA-RT5. Check in advance that you have all of the
units.
NOTE OF REPAIRING THE KEY BOARD
When KEY board installed by this unit are defective, replace the
complete mounted board.
The mounted parts cannot replace with single.
When KEY board installed by this unit are defective, replace the
complete mounted board.
The mounted parts cannot replace with single.
NOTE OF REPAIRING THE MB-1414 BOARD
When MB-1414 board installed by this unit are defective, replace
the complete mounted board.
The mounted parts cannot replace with single.
Block diagram and printed wiring board that have been described
on this service manual are for reference.
Schematic diagram have not described.
When MB-1414 board installed by this unit are defective, replace
the complete mounted board.
The mounted parts cannot replace with single.
Block diagram and printed wiring board that have been described
on this service manual are for reference.
Schematic diagram have not described.
Ver. 1.2
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