Cooling Fan - Onkyo HT-R560 Service Manual

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OPERATION CHECK-5

COOLING FAN

Note : MWT, MWO, MWF type only
Circuit configuration
Power amplifier
FL
FR
C
SL
SBR
SR
SBL
Condition to operate
The cooling fan will stop or rotate at high speed or low speed under the following condition.
Operation of Cooling Fan
T ( C) 55 to 110
Thermal sensor
temperature -30 to 55
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L 13942296513
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Output sensor
Thermal sensor
Q6380
THERMAL
67
Main Microprocessor
VOLH
66
VOLH (V)
VOLH port of MPU
0 to 0.35 0.35 to 1.75
High Speed High Speed
Stop Low Speed
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2 9
8
Fan drive
Q9101, 9102
FANCTRL
63
Q701
Q9111, 9112
1.75 to 3.3V
High Speed
High Speed
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
Cooling fan
0 5 8 2 9 9 4 2 8
m
TX-SR506
9 9
9 9