Read Sony STR-DH740 (serv.man2) Service Manual online
4
STR-DH740
SECTION 1
SERVICING NOTES
MODEL IDENTIFICATION
–BACK PANEL–
–BACK PANEL–
Model
Part No.
US, Canadian
4-448-712-0[]
AEP
4-448-712-2[]
Australian
4-448-712-3[]
Taiwan
4-448-712-4[]
Mexican
4-448-712-5[]
Notes on chip component replacement
•
•
Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
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.
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.
Special Component Notice
The components identified by mark
The components identified by mark
9 contain confidential
information.
Strictly follow the instructions whenever the components are
repaired and/or replaced.
Strictly follow the instructions whenever the components are
repaired and/or replaced.
Notice pour composants spéciaux
Les composants identifiés par la marque
Les composants identifiés par la marque
9 contiennent des
informations confi dentielles.
Suivre scrupuleusement les instructions chaque fois qu’un com-
posant est remplacé et / ou réparé.
Suivre scrupuleusement les instructions chaque fois qu’un com-
posant est remplacé et / ou réparé.
NOTE OF REPLACING THE IC3506 AND IC4100 ON
THE DIGITAL BOARD
THE DIGITAL BOARD
IC3506 and IC4100 on the DIGITAL board cannot exchange with
single. When these parts on the DIGITAL board are damaged,
exchange the entire mounted board.
single. When these parts on the DIGITAL board are damaged,
exchange the entire mounted board.
NOTE OF REPLACING THE COMPLETE DIGITAL
BOARD
When the COMPLETE DIGITAL BOARD is exchanged, please
perform the following procedures.
When the COMPLETE DIGITAL BOARD is exchanged, please
perform the following procedures.
a) RESET MODEL AND DESTINATION SETTING
1. Press the [?/1] button to turn on the main power.
2. While pressing [DISPLAY] button, press and release the
1. Press the [?/1] button to turn on the main power.
2. While pressing [DISPLAY] button, press and release the
[A.F.D.], [MOVIE], [MUSIC] button in order, the message
“SPECIALIZE” appears.
“SPECIALIZE” appears.
3. Press the [
M ] or [ m ] key of the remote commander, the
message “<SPECIAL>” appears.
4. Press the [
] key of the remote commander to enter the
Special Menu List.
5. Press the [
M ] or [ m ] key of the remote commander to
select “MODEL&AREA” then press [
] key of the remote
commander.
6. Press
the
[
M ] or [ m ] key of the remote commander to select
“MD.DST.UNFIX”, press [
] key of the remote commander
for resetting the model and destination.
b) FIX MODEL AND DESTINATION
Please refer to “FIX MODEL AND DESTINATION MODE” in
page 12 for fi xing the model and destination of set.
page 12 for fi xing the model and destination of set.
Part No.
Ver. 1.3
Note: Refer to SUPPLEMENT-1 for adding SERVICING NOTES
(TROUBLESHOOTING)
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