Sony MAP-S1 Service Manual page 4

MAP-S1
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The fl exible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc refl ective surface by the objective lens in the optical
pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
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.
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.
CHECKING THE OPERATION AFTER REPAIR
After repair completion, connect the "iPod", "Walkman" etc. cor-
responding to this unit, and check the operation of playback, re-
cording, charge, etc.
NOTE OF REPLACING THE TUNER BOARD
When the TUNER board is defective, replace the complete mount-
ed board.
NOTE OF REPLACING THE DAB BOARD
When the DAB board is defective, replace the complete mounted
board.
NOTE OF REPLACING THE MS-091 BOARD
When the MS-091 board is defective, replace the LOADING
ASSY (Ref. No. CDM1).
4
SECTION 1
SERVICING NOTES
NOTE OF REPLACING THE IC200, IC201, IC202 AND
IC502 ON THE MAIN BOARD
IC200, IC201, IC202 and IC502 on the MAIN board cannot replace
with single. When these parts are damaged, replace the complete
mounted board.
NOTE OF REPLACING THE IC2003, Q2701, Q2702,
Q2901 AND Q2902 ON THE AMP BOARD
IC2003, Q2701, Q2702, Q2901 and Q2902 on the AMP board can-
not replace with single. When these parts are damaged, replace the
complete mounted board.
NOTE OF REPLACING THE CN3001 AND IC3001 ON
THE NETWORK BOARD
CN3001 and IC3001 on the NETWORK board cannot replace with
single. When these parts are damaged, replace the complete mount-
ed board.
NEW/FORMER DISCRIMINATION OF MAIN, NETWORK,
FRONT-L AND AMP BOARDS
(Canadian model only)
In Canadian model of this unit, MAIN, NETWORK, FRONT-L and
AMP boards have been changed in the midway of production.
Distinguish by the part number of the silk print.
– MAIN Board (Side A) –
– NETWORK Board (Component Side) –
Former type : 1-889-895-11
New type
– FRONT-L Board (Component Side) –
– AMP Board (Component Side) –
Former type : 1-889-902-11
New type
: 1-889-895-12
Former type : 1-889-893-11
New type : 1-889-893-12
Former type : 1-889-891-11
New type : 1-889-891-12
: 1-889-902-12