Sony HT-CT800 Service Manual page 4

HT-CT800
Ver. 1.3
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.
ADVANCE PREPARATION WHEN CONFIRMING OP-
ERATION
All of the units included in the HT-CT800 (SA-CT800/SA-WCT800/
Remote control) are required to confi rming operation of SA-
CT800. Check in advance that you have all of the units.
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
Before checking the operation of the boards for the electric shock
prevention, perform the discharge processing by connecting the
resistor at both ends of capacitor with referring to the fi gure below.
Note 1: When the connector that connects the POWER board to the MB-
1612 board is disconnected before discharging, completely fi n-
ish discharging both boards, and then reconnect the connector. If
discharging is not complete, sparking may occur when connecting
the connector and cause a blown fuse.
Note 2: Be sure to discharge using a resistor of 800  or higher.
– POWER Board (Conductor Side) –
800 /2 W
C914 (US, CND, E3, EA3, TW)
C915 (AEP, UK, SP1, AR, TH, LA, AUS, CH)
– MB-1612 Board (Side B) –
C6050
800 /2 W
800 /2 W
C6068
NOTE OF PERFORMING THE OPERATION CHECK IN
THE STATE THAT HEAT SINK IS REMOVED
When performing the operation check in the state that this unit is
disassembled, it is possible to perform the operation check in the
state that heat sink is removed. However, don't perform the opera-
tion check in the long time, and perform the operation check in the
volume state as low as possible.
4
SECTION 1
SERVICING NOTES
C970
800 /2 W
800 /2 W
C967
"PRTCT", "PUSH" AND "POWER" FLASH ALTER-
NATELY IN THE FRONT PANEL DISPLAY
Press (power) to turn off the
system. After the indicator
disappears, disconnect the AC power
cord (mains lead) and make sure
nothing is obstructing the ventilation
holes of the system.
MODEL IDENTIFICATION
Distinguish by Part No. and Destination code of the model number
label on the bottom side of the main unit.
MODEL NUMBER LABEL
Destination Part No.
US, CND models 4-684-824-0[]
AEP model 4-684-826-0[]
E3 model 4-684-827-0[]
TW model 4-690-898-0[]
UK model 4-690-899-0[]
CH model 4-690-900-0[]
TH model 4-690-901-0[]
AR model 4-690-902-0[]
SP1 model 4-690-903-0[]
AUS model 4-690-905-0[]
EA3 model 4-690-906-0[]
LA model 4-690-908-0[]
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
• Abbreviations
AEP : European (Except for Ireland, UK), Eastern Europe area,
CIS area (Moldova) and Middle East area (Jordan) models
AR : Argentina model
AUS : Australian and New Zealand models
CH : Chinese model
CND : Canadian and Latin American area (Puerto Rico) models
E3 : Middle East area (Lebanon, Syria, Yemen) and African
area (Except for Kenya, Nigeria, Tanzania) models
EA3 : Middle East area (Except for Jordan, Lebanon, Syria, Ye-
men) and African area (Kenya, Nigeria, Tanzania) models
LA : Latin American area (Except for Argentina and Puerto Rico)
model
SP1 : Southeastern Asian area (Except for Thai) and East Asia
area (Hong Kong) models
TH : Thai model
TW : Taiwan model
UK : UK and Ireland models
– Bottom view –
Destination code
Part No.
Destination code
UC2
CEL
E3
TW2
CEK
CN4
TH1
AR2
SP1
AU1
EA3
LA9
SYS SET