4-3
PFM-500A3WE/500A3WG/500A3WU/510A2WE/510A2WG/510A2WU
6.
Detection of outside environment temperature
(Name of this function on the service menu :
TEMPERATURE - AMBIENT TEMP)
Occurrence of abnormality and fault is judged solely
from the internal temperature of the PFM-500A3W/
510A2W. Measurement of the ambient temperature
aims mainly at the confirmation of the operating
environment. Therefore, there is no chance to indicate
this warning message.
Warning of high temperature at 60 °C or higher :
Service code [F1]
7.
Detection of fan stop and that of drive circuit failure.
.
Detection if fan is stopped or not.
(Name of this function on the service menu : FAN - I/O
BLOCK SIDE, CENTER, P/S BLOCK SIDE, No. 1, No. 2)
Status of the respective fans are displayed as OK or
NG on the service menu STATUS.
.
Fan of the power supply block at the top of the rear
of the machine :
Service code [55]
.
Fan in the center of the top on the rear of the ma-
chine :
Service code [54]
.
Fan on the input terminal at the top on the rear of the
machine :
Service code [53]
.
Two fans of the power supply block :
Service code [52]
or [51]
.
Detection of fan drive circuit failure
(Name of this function on the service menu :
FAN - DRIVE CIRCUIT)
The warning when the fan drive data is 6 V or more
and the actual drive voltage is 2 V or less :
Service code [58]
8.
Detection of temperature rise in the power supply block.
(Name of this function on the service menu :
TEMPERATURE - P/S INTERNAL)
Warning of high temperature when temperature of the
heat sink for main converter inside the power supply
unit exceeds the allowable limit :
Service code [61]
9.
Shut down when the 5 V for internal digital circuit has
abnormality.
(Name of this function on the service menu :
POWER SUPPLY - DIGITAL 5V)
The voltage that is input to pin-62 of the system
controller (IC252) is detected.
Shut down when there is no input voltage :
Service code [79]
10. Detection of failure of the EEPROM.
(Name of this function on the service menu : Nil)
Warning when communication with EEPROM cannot
be performed normally.
EEPROM ID code error :
Service code [81]
EEPROM data write error :
Service code [82]
EEPROM data read error :
Service code [83]
EEPROM failure :
Service code [85]
11. Detection of abnormality in communication with scan
converter.
(Name of this function on the service menu : Nil)
Warning when communication with scan converter
cannot be performed normally.
EEPROM ID code error :
Service code [91]
12. Detection of failure in the ON/OFF control of power
supply.
(Name of this function on the service menu : Nil)
When the digital 5 V power does not decrease even in
the STBY state, the machine enters the POWR ON
state automatically :
Service code [98]
13. Detection of decreased voltage of the backup power
supply for watch and detection of abnormality of
oscillator.
(Name of this function on the service menu : Nil)
Normal/abnormal is detected from the register value
inside the watch IC.
Initialization of time due to abnormal register value :
Service code [B1]
Warning of low voltage of backup power supply :
Service code [B2]
Warning that crystal oscillator for watch has stopped :
Service code [B3]
14. Detection of PDP failure using the combination of the
voltage detection and shut down of the machine.
(Name of this function on the service menu : Nil)
PDP is suspected to be defective when DIGITAL 5 V
is normal among the voltages (VS, VA, DIGITAL 5
V) required to drive PDP while both VS and VA are
not inputted.
When all the following conditions are satisfied, the
machine enters once to the STANDBY mode then turn
the main power back on again.
1) DC 180 V power is 40 V or less.
2) DC 70 V power is 20 V or less.
3) DIGITAL 5 V is normal.
The above-described operation is repeated three times.
If the above three conditions are still satisfied, the PDP
is judged to be faulty and the main power is shut
down.
Service code [99]
