Fan Control - Pioneer PDP-507CMX Service Manual

1
10.4

FAN CONTROL

The fan is controlled according to data on temperatures detected by T1-T3 and T5 sensors.
A
Location of the temperature sensors
SENB ASSY
(T1)
B
C
Fan control during normal installation of the PDP
Set the settings for OPTION and FAN CONTROL in INTEGRATOR to AUTO:
AUTO control
D
Change of the rotation
speed of the fan
OFF ⇔ L
L ⇔ M
M ⇔ H
Abnormal temperature
• The rotation speed of the fan is controlled according to signals from T1-T3 and T5 temperature sensors, as shown above:
• As the hysteresis when switching the fan speed, the state just before switching is maintained for 30 seconds.
• If the temperature rises to a level defined as abnormal, shutdown procedures will follow.
E
• Even if the detected temperature falls below the temperature at which the fan speed is defined to be switched from L to
OFF, the fan keeps rotating at the L speed and does not stop. Rotation of the fan is canceled only when the power is
turned off then back on again.
Fan control while the unit is installed in a special orientation
• When the unit is installed 90º from normal or upside down, with the screen side upward set the settings for OPTION
and FAN CONTROL in INTEGRATOR to MAX (mode in which the fan rotation speed is always high).
F
192
1
2
SEND ASSY
VISIF ASSY
(T5)
Without a slot mechanism/with the slot
mechanism manufactured by Pioneer
60
63
67
82
PDP-507CMX
2
3
(T2)
With a slot mechanism manufactured
3
4
SENC ASSY
(T3)
(Unit: °C)
by another maker
61
64
67
82
4