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Chapter 5 Error Count Messages Definition
Error Count Definition Specification
LAMP FAIL COUNT
LAMP OFF DETECT LAMPLIT
LAMP FAN ERROR COUNT
LAMP FAN SPEED ERROR SPEED OVER ± 20%
BALLAST FAN ERROR COUNT
BALLAST FAN SPEED ERROR SPEED OVER ± 20%
BLOWER ERROR COUNT
BLOWER FAN SPEED ERROR SPEED OVER ± 20%
DIODE1 ERROR COUNT
LAMP BOX SENSOR ERROR DETECT DIODE1
DIODE2 ERROR COUNT
FRONT SENSOR ERROR DETECT DIODE2
DIODE3 ERROR COUNT
MCU WATCHDOG RESET DETECT WTD
LAMP BOX SENSOR OVER
TEMPERATURE COUNT
LAMP BOX TEMPERATURE ERROR
TEMPERATURE OVER 65
℃
FRONT SENSOR OVER
TEMPERATURE COUNT
N/A N/A
FAN IC I2C ERROR
N/A N/A
Level 3 - Component Repair to Curcuit Boards
Theory of Circuit Operation
Chapter 1 System Operation Theory
1.1 Overview
The Projector system consists of display function, cooling function, lighting function, safety protection function, and User
interface control function and power control function. An ARM processor embedded in the DDP ASIC is used to execute
system firmware. The ARM processor serves as the master controller of the projector and provides the link between the
display screen and end-user controls such as a keypad and IR remote control. These inputs can be processed in the ARM
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