Processing At The Time Of Abnormalities; Temperature Compensation Of Drive System Voltage - Pioneer 434CMX - PDP - 43" Plasma Panel Service Manual

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7.1.3 PROCESSING AT THE TIME OF ABNORMALITIES

Fan and temperature sensor
Circuitry
SENSOR ASSY
SENSOR
SP TERMINAL L ASSY
SENSOR
Port monitoring specifications
Shutdown
Port
Name
Name
FAN_NG FAN
TEMP1 Unit under high temperature
TEMP2 Unit under high temperature
TEMP3 Unit under high temperature

7.1.4 TEMPERATURE COMPENSATION OF DRIVE SYSTEM VOLTAGE

Function: To control the DRIVE-system voltage according to the temperature (Temperature compensation functions such that the voltage
is lowered on the lower-temperature side and the voltage becomes higher on the higher-temperature side.)
Purpose: For improving the yield by compensating for the temperature characteristics of the panel
Note: • Temperature compensation is performed only for the VSUS voltage, and not for the VOFS voltage. This compensation is
controlled by the software.
• Temperature compensation is carried out with the value of TEMP1.
5
6
DIGITAL VIDEO ASSY
TEMP1
92
RGB ASSY
TEMP3
50
TEMP2
Control
Assign
Microcomputer
31 Main Shutdown when
the signal becomes
high
92 Module
Shutdown when
the set value is
51 Main
exceeded
50 Main
PDP-434CMX
6
7
MODULE
UCOM
FAN_NG
31
FAN0
FAN
MAIN
DRIVE
UCOM
49
51
SENSOR
Active
Disconnection of the fan connector or
abnormality in operation of the fan detected
Monitoring high temperature of the panel,
Drive system temperature compensation
Monitoring high temperature of boards
Monitoring ambient temperature
7
8
FAN
Remarks
105
8
A
B
C
D
E
F