Servicing Notes - Sony STR-DN850 Service Manual

STR-DN850
Ver. 1.2
MODEL IDENTIFICATION
–BACK PANEL–
Model
US, Canadian
AEP, UK
Australian
Taiwan
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 REPLACING THE IC2104, IC2115, IC2500,
IC2502, IC3004, IC3200, IC3202, IC3203, IC3209,
IC3210, IC3506, IC7000 OR IC7001 ON THE DIGITAL
BOARD
IC2104, IC2115, IC2500, IC2502, IC3004, IC3200, IC3202,
IC3203, IC3209, IC3210, IC3506, IC7000 or IC7001 on the
DIGITAL board cannot exchange with single. When these
parts on the DIGITAL board are damaged, exchange the entire
mounted board.
NOTE OF REPLACING THE IC902 ON THE STANDBY
BOARD
IC902 on the STANDBY board cannot exchange with single.
When this part on the STANDBY board is damaged, exchange
the entire mounted board.
8
SECTION 1

SERVICING NOTES

NOTE OF REPLACING THE Q550, Q551, Q600, Q601,
Q650, Q651, Q700, Q701, Q750, Q751, Q800, Q801,
Q850 AND Q851 ON THE MAIN BOARD
Replacement of Q550, Q551, Q600, Q601, Q650, Q651, Q700,
Q701, Q750, Q751, Q800, Q801, Q850 and Q851 on the MAIN
board used in this unit requires L type screw driver.
Part No.
Part No.
4-487-927-0 []
4-487-927-1 []
4-487-927-2 []
4-487-927-3 []
L type screw driver
(e.g Compact 90 degree right
angled ratchet screwdriver (dr-05))