Sony PFM-42B1 Service Manual page 56

d) FAN
FAN
DRIVE CIRCUIT : OK
• B BOARD : OK
• P/S BLOCK TOP : OK
• P/S BLOCK MID : OK
• P/S BLOCK LOW L : OK
• P/S BLOCK LOW R : OK
• DD CON SIDE : OK
• I/O BLOCK SIDE : OK
Fan drive circuit:
Indicates the operating status of the fan control circuit.
OK appears when the fan control circuit is operating
normally.
NG appears when the fan control circuit is defective.
P/S BLOCK TOP
P/S BLOCK MID
P/S BLOCK LOW L
P/S BLOCK LOW R
DD CON SIDE
I/O BLOCK SIDE
e) OTHERS
OTHERS
EEPROM ID : OK
EEPROM SAVE : OK
EEPROM LOAD : OK
EEPROM ACK : OK
PW164 ACK : OK
RTC INITIALIZE : OK
RTC BATTERY : OK
RTC XTAL : OK
EEP ROM ID
EEP ROM SAVE
EEP ROM LOAD
EEP ROM ACK
PW164 ACK
RTC INITIALIZE :Time data initializatioin due to
RTC BATTTERY
RTC XTAL : Warning due to stoppage of
PFM-42B1, PFM-42B1E
: Power supply block
: Left side of the power supply
block
: Lower left side of the power
supply block
: Lower right side of the
power supply block
: Lower left side
:Lower right side
:ID code error
:Data write error
:Data read error
:Defective
:Communication error with scan
converter
abnormal register value
:Low backup voltage warning
crystal oscillator for watch
f) 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.
g) TEST FUNCTION
TEST FUNCTION
FAN DRIVE
BLUE ONLY
This is the test function.
. . . . . Fan operation check only
FAN DRIVE : AUTO
DRIVE DATA : 10783
DRIVE VOLTAGE : 08.9 [V]
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 :
00000 to 16383
. . . . . Blue only
When Blue only is selected, all of the R, G and B colors
become the blue data.
System controller
Scan converter
Fan operation
check only
Blue only
Drive register data
Actual drive voltage
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