Sony AIR-SA5R Service Manual ▷ View online
AIR-SA5R
3
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 REPLACING THE IC401 ON THE MICON
BOARD
IC401 on the MICON board cannot exchange with single. When
this part is damaged, exchange the entire mounted board.
BOARD
IC401 on the MICON board cannot exchange with single. When
this part is damaged, exchange the entire mounted board.
NOTE OF REPLACING THE IC302 ON THE POWER
AMP BOARD
IC302 on the POWER AMP board cannot exchange with single.
When this part is damaged, exchange the entire mounted board.
AMP BOARD
IC302 on the POWER AMP board cannot exchange with single.
When this part is damaged, exchange the entire mounted board.
AIR-SA5R
4
SECTION 2
DISASSEMBLY
•
This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
2-2. REAR CABINET BLOCK
Note: This illustration sees the set from rear side.
SET
2-2. REAR CABINET BLOCK
(Page
(Page
4)
2-3. POWER
UNIT
(Page
5)
2-4. POWER
AMP
BOARD
(Page
5)
2-5. CHASSIS
BLOCK
(Page
6)
2-7. SPEAKER (3.9 cm) (SP301)
(Page
(Page
7)
2-6. KEY BOARD, MICON BOARD
(Page
(Page
6)
2 two claws
2 two claws
1 three screws
3 Remove two solders
of power unit.
4 rear cabinet block
1 two screws
1 three screws
POWER
AMP board
AMP board
black
red
Lead wire from power unit.
,nstallation of lead wire from power unit.
AIR-SA5R
5
2-3. POWER UNIT
2-4. POWER AMP BOARD
Note: This illustration sees the front cabinet block from rear side.
1 two screws
2 two screws (B2.6)
3 cabinet (rear) B
4 two screws (B2.6)
7 power unit
6 magic tape (B type)
5 cabinet (rear) A block
POWER AMP board
red
white
Lead wire from speaker (SP301).
3 flexible flat cable
(6 pin) (CN901)
2 flexible flat cable
(6 pin) (CN902)
5 POWER AMP board
4 three screws
1 Remove two solders
of speaker (SP301).
,nstallation of lead wire from speaker.
front cabinet block
AIR-SA5R
6
2-5. CHASSIS BLOCK
Note 1: This illustration sees the front cabinet block from rear side.
2-6. KEY BOARD, MICON BOARD
4 flexible flat cable
(6 pin) (CN402)
3
5 chassis block
2 four screws (B2.6)
1 flexible flat cable
(6 pin) (CN503)
KEY board
switch (S705)
knob
front cabinet block
Note 2: When installing knob, the position of
switch (S705) and claw of knob is set
and
installed.
8 MICON board
1 four screws
2
4 KEY board
3 flexible flat cable (12 pin)
(KEY board: CN701, MICON board: CN401)
7 three screws
6 Remove four solders
from LED board.
5 flexible flat cable
(8 pin) (CN403)
MICON board
blue
white
red
yellow
from LED board
Installation of lead wire from LED board.