STR-DN1060, STR-DN860 - Sony Audio Service Manual (repair manual). Page 6

NOTE  OF  REPLACING  THE  Q1550,  Q1551,  Q1600,  
Q1601,  Q1650,  Q1651,  Q1700,  Q1701,  Q1750,  Q1751,  
Q1800,  Q1801,  Q1850  AND  Q1851  ON  THE  MAIN  
BOARD
Replacement of Q1550, Q1551, Q1600, Q1601, Q1650, Q1651, 
Q1700, Q1701, Q1750, Q1751, Q1800, Q1801, Q1850 and 
Q1851 on the MAIN board used in this unit requires L type screw 
driver.

NOTE  OF  REPLACING  THE  IC1906,  IC1911,  IC1912,  
IC1913,  IC1914  AND  IC1915  ON  THE  DCDC  BOARD
Replacement of IC1906, IC1911, IC1912, IC1913, IC1914 and 
IC1915 on the DCDC Board used in this unit required to unsolder 
the grounding wire on the DCDC Board.

After replaced the IC1906, IC1911, IC1912, IC1913, IC1914 and 
IC1915, have to solder back the grounding wire on the DCDC 
Board properly before turn on the set (refer image provided 
below). 
(Caution:  If insuffi cient solder occured for the grounding wire in 
DCDC Board, it may caused the set intermittent turn on/off and 
will spoil the MB Board)

Grounding wire area (Conductor View)

CAPACITOR  ELECTRICAL  DISCHARGE  PROCESSING
When checking the board, for the electric shock prevention, 
connect the resistors to both ends of respective capacitors (C930 
and C931 on the MAIN board) to discharge the capacitors.