Sanyo PLC-XP100L, Service Manual

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Chassis Description
detection of Power failure
Projector provides a protection circuit to prevent the secondary failure when the power failure, fans failure or tempera-
ture failure occurs on the projector. The power failure detection lines "S5V_AV_PF", "MAIN_-5V_PF", etc. are con-
nected to the main power supplies and fans. When the failure occurs, IC801<SH3, SYSTEM CONTROL> receives
an error information through the IC4801<I/O EXPANDER> and then outputs the signal "PFC_SW_CPU" from pin 186
to stop the power supply.
The power failure detection signals are sent to IC4801<I/O EXPANDER> and then sent to IC801<SH3, SYSTEM
CONTROL> .
Error information table
Ic Pin Signal Name connection Lines error Information Failure Area
IC4801
64 PJ_5V_PF PJ_5V PJNET, S5V 5V line on Network Unit
65 S-5V_AV_PF -5V_AV AV, S-5V S-5V line on AV
66 S5V_AV_PF S5V AV S5V S5V line on AV
67 MAIN_-5V_PF MAIN_-5V MAIN, S-5V S-5V line on Main
68 M/A_PF M/A_9V M/A, 9V 9V line on Main
69 FAN_PF S16V, FAN LOCK FAN, 16V
S16V line on Fan Drive stage
FN901, FN90, FN904
70 SWF_1.V_PF SWF_1.V SWFPGA1, 1.V FPGA stage 1.V line
71 SWF_.5V_PF SWF_.5V SWFPGA1, .5V FPGA stage .5V line
7 VDEC_1.8V_PF VDEC_1.8V VDEC, 1.8V Video Decoder & A/D stage
73 FPGA_1.5V_PF FPGA_1.5V FPGA, 1.V
77 MAIN_6V_PF MAIN_6V MAIN, 6V 6V line on Main
78 MAIN_3.3V_PF MAIN_3.3V MAIN, 3.3V 3.3V line on Main
80 AD_3.3V_PF AD_3.3V ANALOG, 3.3V PC A/D stage 3.3V line
8 VDEC_3_3V_PF VDEC_3.3V VDEC, 3.3V Video Decoder & A/D stage
6 GAM_1.8V_PF GAM_1.8V GAMMA, 1.8V Digital Gamma stage 1.8V
63 GAM_.5V_PF GAM_.5V GAMMA, .5V Digital Gamma stage .5V
86 GAM_3.3V_PF GAM_3.3V GAMMA, 3.3V Digital Gamma stage 3.3V
88 GAM_13.5V_PF 13.5V GAMMA, 13.5V Panel Drive stage
56 LAMP_FAN_PF S16V, FAN LOCK LAMP FAN, 16V
S16V line on Fan Drive stage
FN905, FN906, FN907, FN908
47 9V_LNS_PF 9V_LNS LENS, 9V Lens Motor Drive (Zoom/Focus)
46 15V_LNS_PF 15V_LNS LENS, 15V Lens Motor Drive (Lens Shift)
IC801
166 FILTER_DET FILTER, DET Filter Cartridge is not installed
9 FILTER_COUNT MOTOR, TIMOUT Filter Motor Error
33 PRESS_SENS PRESS, ERROR Pressure Sensor IC4811
Power failure detection system