Contn:
[2]
LAMP COVER ERROR [3x Power/Standby Red LED Flash Pattern]
The DE mocro processor monitors the lamp cover for proper closure. On the back of the lamp cover there is a tab, which depresses and closes a switch on the T-1 board when the cover is securely closed.
If the cover is not securely closed or if the tab, switch, of wing is damaged, then the TV will shut down and a 3X flash pattern on Standby/Power LED will occur.
The DE micro processor also monitors the Lamp Plug connection using the T3 board, located inside the lamp housing near the female side of the plug.
If the plug does not mate up properly, of if the plug, switch or wiring is damaged then the TV will shut down and a 3X Flash pattern on the Standby/Power LED will occur.
FAN STOPPED {4X Power/Standby Red LED flash pattern}
All cooling and exhaust fans the TV are monitor for rotation. If any one of the fan stops rotating for any reason, such as, and obstacle blocking the blades or a defective fan the DE micro processor will receive an error signal. The TV will shut down and a 4X flash pattern on the Standby/Power LED will occur.
LAMP DRIVER ERROR {5X Power/Standby Red LED Flash}
This protection circuit monitors the output of the lamp driver (aka Lamp Power Supply Block of Lamp Ballast) module for the presence of High Voltage Drive (AC12KV) for Lamp Ignition and normal operating voltage (AC60V) after initial lam ignition.
Note: The Lamp Ignition High Voltage can vary between 5KV and 26KV, 12KV is the typical ignition voltage, depends on the temperature of the lamp at the time of ignition.
This protection circuit also indirectly monitors the 380V from the main power supply. If the 380V supply is missing the Lamp Driver will not be able to develop the high voltage, and therefore, the DE microprocessor will detect a lamp driver failure.
When either the high voltage output fails {lamp Drive Defective} the TV will shut down, or the 180V supply fails {Main power Supply defective} the TV will shut down and a 5X flash pattern on the Standby/Power LED will occur.
LOW B ERROR { 6X Power/Standby Red LED Flash Pattern}
The DE micro processor directly monitors the DC voltage output of the D5V regulator IC2103 on the ASU board, and indirectly the SUB11V voltage output from the main power supply. The SUB11V is the input voltage of the D5V regulator IC2103. Therefore if either the D5V regulator, Main Power Supply, or the SUB11V voltage path to the D5V regulator fails the TV will shut down and a 6X flash pattern on Standby/Power LED will occur
AUDIO ERROR {7X Power/Standby Red LED Flash Pattern}
The protection circuit (IC2605, IC2606 & IC2608) mounted on the 'K' board monitors the audio amplifier outputs [Speaker lines] for a shorted condition or for the presence of any DC voltage level. If either of these conditions is detected the protection alerts the 'DE' micro processor of the failure and a 7X flash pattern on Standby/Power LED will occur.
PANEL ERROR OR DEVICE ACKNOWLEDGMENT ERROR [ 9X Power/Standby Red LED Flash Pattern]
This 'DE' micro processor monitors the I2C communications between itself and the C-Board, S1-Board & S-2 Bard. This protection circuit will trigger if the previously mentioned devices do not send an acknowledgment (over the I2C Bus) during initial TV power-up, or if the I2C bus communications between these devices is interrupted during normal operation. In either case, the 'DE' micro processor detects the failure, the TV will shut down, and the Red Power/Standby LED flashes a 9X flash pattern.
LAMP COVER ERROR [3x Power/Standby Red LED Flash Pattern]
The DE mocro processor monitors the lamp cover for proper closure. On the back of the lamp cover there is a tab, which depresses and closes a switch on the T-1 board when the cover is securely closed.
If the cover is not securely closed or if the tab, switch, of wing is damaged, then the TV will shut down and a 3X flash pattern on Standby/Power LED will occur.
The DE micro processor also monitors the Lamp Plug connection using the T3 board, located inside the lamp housing near the female side of the plug.
If the plug does not mate up properly, of if the plug, switch or wiring is damaged then the TV will shut down and a 3X Flash pattern on the Standby/Power LED will occur.
FAN STOPPED {4X Power/Standby Red LED flash pattern}
All cooling and exhaust fans the TV are monitor for rotation. If any one of the fan stops rotating for any reason, such as, and obstacle blocking the blades or a defective fan the DE micro processor will receive an error signal. The TV will shut down and a 4X flash pattern on the Standby/Power LED will occur.
LAMP DRIVER ERROR {5X Power/Standby Red LED Flash}
This protection circuit monitors the output of the lamp driver (aka Lamp Power Supply Block of Lamp Ballast) module for the presence of High Voltage Drive (AC12KV) for Lamp Ignition and normal operating voltage (AC60V) after initial lam ignition.
Note: The Lamp Ignition High Voltage can vary between 5KV and 26KV, 12KV is the typical ignition voltage, depends on the temperature of the lamp at the time of ignition.
This protection circuit also indirectly monitors the 380V from the main power supply. If the 380V supply is missing the Lamp Driver will not be able to develop the high voltage, and therefore, the DE microprocessor will detect a lamp driver failure.
When either the high voltage output fails {lamp Drive Defective} the TV will shut down, or the 180V supply fails {Main power Supply defective} the TV will shut down and a 5X flash pattern on the Standby/Power LED will occur.
LOW B ERROR { 6X Power/Standby Red LED Flash Pattern}
The DE micro processor directly monitors the DC voltage output of the D5V regulator IC2103 on the ASU board, and indirectly the SUB11V voltage output from the main power supply. The SUB11V is the input voltage of the D5V regulator IC2103. Therefore if either the D5V regulator, Main Power Supply, or the SUB11V voltage path to the D5V regulator fails the TV will shut down and a 6X flash pattern on Standby/Power LED will occur
AUDIO ERROR {7X Power/Standby Red LED Flash Pattern}
The protection circuit (IC2605, IC2606 & IC2608) mounted on the 'K' board monitors the audio amplifier outputs [Speaker lines] for a shorted condition or for the presence of any DC voltage level. If either of these conditions is detected the protection alerts the 'DE' micro processor of the failure and a 7X flash pattern on Standby/Power LED will occur.
PANEL ERROR OR DEVICE ACKNOWLEDGMENT ERROR [ 9X Power/Standby Red LED Flash Pattern]
This 'DE' micro processor monitors the I2C communications between itself and the C-Board, S1-Board & S-2 Bard. This protection circuit will trigger if the previously mentioned devices do not send an acknowledgment (over the I2C Bus) during initial TV power-up, or if the I2C bus communications between these devices is interrupted during normal operation. In either case, the 'DE' micro processor detects the failure, the TV will shut down, and the Red Power/Standby LED flashes a 9X flash pattern.
