Filter
Top Products
- 48 -
Chassis Description
Detection of Power failure
The projector provides a protection circuit to prevent the secondary failure when the power failure, fans failure or tem-
perature failure occurs on the projector. The power failure detection lines "MAIN_6V_PF", "MAIN_-5V_PF", etc. are
connected to the main power supplies. When the failure occurs, IC801<CPU> receives an error information through
the power failure detection lines and turns off the signal "IC_RESET_CPU" output from pin 211 to stop the power
supply.
The power failure detection signals are sent to IC4801<I/O expander> and then sent to IC801<CPU>.
Error information table
64 PJ_5V_PF PJNET S5V PJNET, S5V
65 -5V_AV_PF AV S-5V (AV BOARD) AV, -5V
66 S5V_AV_PF AV S5V (AV BOARD) AV, S5V
67 MAIN_-5V_PF SUB_POWER S-5V (MAIN) MAIN, S-5V
68 M/A_PF MOTOR&AUDIO 12V M/A, 12V
69 FAN_PF FAN 16V FAN, 16V
70 SWF_1.2V_PF SW FPGA 1.2V SWFPGA, 1.2V
IC4801 71 SWF_2.5V_PF SW FPGA 2.5V SWFPGA, 2.5V
TIC81592GPBM 72 VDEC_1.8_PF CXD3807 1.8V ANALOG, 1.8V
73 FPGA_1.5V_PF FPGA 1.5V FPGA, 1.5V
74 GAM_15.5V_PF GAMMA 15.5V GAMMA, 15.5V
77 MAIN_6V_PF SUB POWER 6V (MAIN) MAIN, 6V
78 MAIN_3.3V_PF SUB_POWER 3.3V (MAIN) MAIN, 3.3V
80 AD_3.3V_PF AD9882 3.3V ANALOG, 3.3V
82 AD_5V_PF AD9882 5V ANALOG, 5V
83 GAM_1.8V_PF GAMMA 1.8V GAMMA, 1.8V
56 LAMP_FAN_PF LAMP_IN_FAN 16V LAMP FAN, 16V
IC Pin Signal Name Connection Error Information
Power failure detection system