Pioneer PDP-4271HD Service Manual page 118

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7.6 PROCEDURE WHEN REPLACING THE POWER SUPPLY UNIT
A
When replacing Power Supply Assy, it is necessary to perform the following connector changes.
Otherwise a unit cannot work properly and it might cause damage of unit.
Therefore perform this connector settings without fail when replacing Power Supply Assy ( before power on the unit)
B
C
1. As for service parts, Jumper connector is
connected at connector P10.
D
E
F
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3. Connect cable connector from power SW to
P10
PDP-4271HD
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Location of jumper connector
2. Remove the jumper connector from
connector P10 and connect it to connector P11
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