Brother International HL 1850 Service Manual - Page 275

Appendix, Guidelines, Solder

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APPENDIX APPENDIX 21. GUIDELINES FOR LEAD FREE SOLDER (MAIN PCB ASSY) The LSI component mounting side of the MAIN PCB ASSY is soldered using lead free solder, be sure to use lead free solder that meets the following specification in the case of repair. Lead free solder ; NIHON GENMA DHB-RMA3 NP303 (This can be distinguish from the lead free identification sign "LFH" on the MAIN PCB ASSY REV.) However, the solder side of the MAIN PCB ASSY and other PCBs are soldered using lead content solder, use conventional lead content solder in the case of repair. Since the reliability of soldering cannot be guaranteed if lead free solder and lead content solder are mixed, take care not to use the incorrect solder or mix the solder types. A-29

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APPENDIX
APPENDIX
21.
GUIDELINES
FOR
LEAD
FREE
SOLDER
(MAIN
PCB
ASSY)
The
LSI
component
mounting
side
of
the
MAIN
PCB
ASSY
is
soldered
using
lead
free
solder,
be
sure
to
use
lead
free
solder
that
meets
the
fol
lowing
specification
in
the
case
of
repair.
Lead
free
solder
;
NIHON
GENMA
DHB-RMA3
NP303
(This
can
be
distinguish
from
the
lead
free
identification
sign
"LFH"
on
the
MAIN
PCB
ASSY
REV.)
However,
the
solder
side
of
the
MAIN
PCB
ASSY
and
other
PCBs
are
soldered
using
lead
content
solder, use
conventional
lead
content
solder
in
the
case
of
repair.
Since
the
rel
iabi
l
ity
of
soldering
cannot
be
guaranteed
if
lead
free
solder
and
lead
content
solder
are
mixed,
take
care
not
to
use
the
incorrect
solder
or
mix
the
solder
types.
A-29