Sony PFM-500A3WE Service Manual page 65

d) FAN
FAN
PANEL BACK SIDE
• I/O BLOCK SIDE : OK
• CENTER : OK
• P/S BLOCK SIDE : OK
POWER SUPPLY SIDE
• No. 1 : OK
• No. 2 : OK
DRIVE CIRCUIT : OK
The cooling fan operational information inside the
PFM-500A3W/510A2W is displayed. The message
OK appears when fan is normal. The message NG
appears when fan is abnormal.
Fan at the top on the rear of the power supply panel :
Operating states of the respective fans on the rear of
the power supply panel are displayed as follows.
P/S BLOCK SIDE :
Fan on the side of the power supply block.
CENTER : Fan in the center.
I/O BLOCK SIDE : Fan in the I/O terminal block.
Power supply internal fan :
Operating state of the fan inside the power supply
block is displayed.
Fan drive circuit :
Operating state of the fan control circuit is displayed.
The message OK appears when fan is normal. The
message NG appears when fan is abnormal.
e) SOFTWARE VERSION
SOFTWARE VERSION
MAIN CPU : Ver. 1.00
SCAN CONVERTER : Ver. 1.00
Version of each software is displayed.
System controller :
Version of the main microprocessor is displayed.
Scan converter :
Version of the scan converter (IC207) is displayed.
PFM-500A3WE/500A3WG/500A3WU/510A2WE/510A2WG/510A2WU
f) TEST FUNCTION
TEST FUNCTION
FAN DRIVE
Fan at the top on
BLUE ONLY
the rear of the
power supply panel
Power supply
internal fan
Fan drive circuit
This is the test function.
. . . . . Fan operation check only
FAN DRIVE
DRIVE DATA
DRIVE VOLTAGE
When the FAN DRIVE is changed from AUTO to
MANUAL, and ENTER is pressed, the DRIVE DATA
indication changes to cyan. In this setup, the drive
register value can be manually modified. When the
drive register value is changed, the pulse width of the
PWM signal in the fan voltage control PWM circuit is
changed accordingly.
Fans can be checked whether they operate normally or
not by comparing the register value and the actual
drive voltage, and by comparing the actual drive
voltage and the actual operations of the fans.
Variable range of the drive register value :
System controller
Scan converter
00000 to 16383
. . . . . Blue only
When Blue only is selected, all of the R, G and B colors
become the blue data.
Fan operation
check only
Blue only
: AUTO
Drive register data
: 10783
: 08.9 [V]
Actual drive voltage
3-13