Servicing Notes - Sony PRS-505/SC - Portable Reader System Service Manual

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.
REWRITING THE LUT
The LUT is exclusive for each lot number of the INK INDICATOR
ELEMENT ASSY. Therefore, when replacing the MAIN board,
display panel, or FLASH ROM, you need to rewrite the LUT.
However, rewriting is not required if the lot number is the same.
Location where the LUT is stored:
• IC1203
How to check the version of the stored LUT:
• When you insert the memory stick or SD memory card in
which the exclusive fi le is stored, the test mode is established.
Check the current LUT version displayed at the right side of
"Update Waveform" as in the screen below. The LUT version
is "8202191919" in this example.
(Screen display)
SECTION 1

SERVICING NOTES

How to check the lot number of the ink (indication)
ELEMENT ASSY:
• The lot number is written on the label on the fl exible card wire.
The lot number is "P10" in the picture below.
main board
How to change the LUT:
• Copy the LUT fi le you want to update to the folder under "/
Sony Reader/software" in the memory stick or SD memory
card exclusive for the test mode, and then change the name to
"lut.bin". Execute test mode No.3 "Update Waveform". The
LUT will be updated in about 10 seconds, and the LUT version
display will also change.
• For the LUT version and the LUT fi le corresponding to the lot
number of the panel, refer to technical news.
Note:
• To create the memory stick exclusive for the test mode, refer to TEST
MODE (Page 11).
• For the VCOM adjustment value of RV1801 for each lot, refer to
ELECTRICAL ADJUSTMENT (Page 11).
PRS-505
ink (indication)
element assy
3