Self Diagnosis Function; Outline; Criteria For Judgment Of Abnormality - Sony PFM-500A3WE Service Manual

4-2. Self Diagnosis Function

4-2-1. Outline

The PFM-500A3W/510A2W has the self diagnosis
function using A/D converter to detect the power supply
analog voltages, 8 channels of temperature sensor, fan
operations, power unit temperature, DC voltage status, and
to check the EEPROM and the watch register. When any
abnormality occurs or defect is detected, the Error Code
appears on the service code indicator of the power supply
block, the standby indicator on the control panel flashes
and the detected data is displayed on the service menu
[STATUS/TEST] block. If the abnormal status exceeds
the allowable limit, the PFM-500A3W/510A2W is forced
to shut down.
The detection items are shown as follows.
1. Increase and decrease of the panel DC voltage Vs is
detected.
2. Increase and decrease of the panel DC voltage Va is
detected.
3. Increase of temperature at the side of the power block
in the top of the panel is detected and shut down of the
machine.
4. Increase of temperature at the center in the top of the
panel is detected and shut down of the machine.
5. Increase of temperature at the side of the input connec-
tor block in the top of the panel is detected and shut
down of the machine.
6. Detection of outside environment temperature.
7. Detection of fan stop and that of drive circuit failure.
* Three fans at the top of the panel and two fans for
power supply.
8. Detection of temperature rise in the power supply
block.
9. Shut down when the 5 V for internal digital circuit has
abnormality.
10. Detection of failure of the EEPROM.
11. Detection of abnormality in communication with scan
converter.
12. Detection of failure in the ON/OFF control of power
supply.
13. Detection of decreased backup power supply voltage
for watch and detection of abnormality in oscillator.
14. Detection of PDP failure using the combination of the
voltage detection and shut down of the machine.
4-2

4-2-2. Criteria for Judgment of Abnormality

1. Increase and decrease of the panel DC voltage Vs is detected.
(Name of this function on the service menu :
POWER SUPPLY - PDP VS)
. . . . . PFM-510A2W
The normal operating range is + 160 V + 24 V/_ 22 V.
Warning of increase of the voltage Vs when 184 V or
more :
Warning of decrease of the voltage Vs when 138 V or
less :
. . . . . PFM-500A3W
The normal operating range is + 175 V + 26 V/_ 23 V.
Warning of increase of the voltage Vs when 201 V or
more :
Warning of decrease of the voltage Vs when 152 V or
less :
2. Increase and decrease of the panel DC voltage Va is detected.
(Name of this function on the service menu :
POWER SUPPLY - PDP VA)
The normal operating range is + 60 V + 15 V/_ 14 V.
Warning of increase of the voltage Va when 75 V or
more :
Warning of decrease of the voltage Va when 46 V or
less :
3. Increase of temperature at the side of the power block in the
top of the panel is detected and shut down of the machine.
(Name of this function on the service menu :
TEMPERATURE - P/S BLOCK SIDE)
The normal operating range is up to 57 °C.
Warning of high temperature when 58 °C or higher :
Shut down at the temperature of 68 °C or higher :
4. Increase of temperature at the center in the top of the
panel is detected and shut down of the machine.
(Name of this function on the service menu :
TEMPERATURE - CENTER)
The normal operating range is up to 55 °C.
Warning of high temperature when 56 °C or higher :
Shut down at the temperature of 66 °C or higher :
5. Increase of temperature at the side of the input connec-
tor block in the top of the panel is detected and shut
down of the machine.
(Name of this function on the service menu :
TEMPERATURE - I/O BLOCK SIDE)
The normal operating range is up to 53 °C.
Warning of high temperature when 54 °C or higher :
Shut down at the temperature of 64 °C or higher :
PFM-500A3WE/500A3WG/500A3WU/510A2WE/510A2WG/510A2WU
Service code [11]
Service code [12]
Service code [11]
Service code [12]
Service code [21]
Service code [22]
Service code [31]
Service code [39]
Service code [A1]
Service code [A9]
Service code [41]
Service code [49]