TX-NR1030/3030/ PR-SC5530/ DTR-60.6/70.6/ DHC-80.6
OPERATION CHECK-10
COOLING FAN
(The following model only)
Circuit
FANCTRL
3
139
VOLH
Thermal sensor
137
Power amp.
COOLING FAN
Q6592
THERMAL1
Q6980
VOLH(Voltage of VOLH port)
THERMAL
(Temparature of
thermal sensor)
Q7011
MPU
(Main Microprocessor)
Normal/ Bi-Amp
Powerd Zone-2,3,4
STOP
OFF or
Headphone
OFF or
Headphone
LOW
MID
LOW
MID
HIGH
HIGH
OFF
LOW
HIGH
MID
MID
LOW
LOW
STOP
LOW
LOW
STOP
STOP
STOP
STOP
STOP
STOP
HIGH
LOW
LOW
LOW
LOW
LOW
MID
MID
MID
MID
MID
MID
MID
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
THERMAL
-30
45 50
52 55
65
90
100
Shut down
immediately
Shut down
immediately
Shut down in
10 minutes
continuously
HIGH
MID
LOW
OFF
Hysteresis control
VOLH
0.35V 0.4V
1.9V 2.0V 2.2V 2.3V
3.3V
HIGH
MID
LOW
OFF
Hysteresis control
Value D/A output of the MPU
OFF
LOW
MID
HIGH
0V
1.7V
2.2V
3.3V
Condition to operate
How to check
1. How to check operation of Cooling Fan.
See “CONFIRMATION OF COOLING FAN OPERATION” in OPERATION CHECK-4.
2. How to check the value of THERMAL and VOLH.
See “CONFIRMATION OF OUTPUT VOLTAGE AND THERMAL SENSOR” in OPERATION CHECK-1.
0V
e.g.(TX-NR1030)
63
THERMAL2
Q6981
138
Q6951
Fan drive
Applied model
TX-NR1030/3030, DTR-60.6/70.6
