-85-
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 "P-FAIL_S5V", "P-FAIL_S3.3V", etc. are con-
nected to the main power supplies. When the failure occurs, IC301<SCALER> receives an error information through
IC5201<FPGA>, IC4801 <I/O Expander> and then outputs the signal "LAMP_DC_ON_EX" from pin 32. The signal
"LAMP_DC_ON_EX" is supplied to power supply circuit as the signal "LAMP_DC_ON" via IC1871 <Buffer> to control
the power supply operation.
Error information table
Power failure detection system
IC Pin Signal Name Connection Lines Error Information Failure Area
IC5201
FPGA
XC3S50
194 P-FAIL_1.0V 1.0V GAMMA, 1V Gamma, IC401, IC1411
222 P-FAIL_1.8V_KS 1.8V_KS KS, 1.8V Keystone, IC2301, IC2371
245 P-FAIL_2.5V_KS 2.5V_KS KS, 2.5V Keystone, IC2301, IC2381
228 P-FAIL_S3.3V
S3.3V, S4.3V, S3.3V_DVI, 3.3V,
3.3_KS, 3.3V_AD
MAIN/AV, 3.3V 3.3V, 4.3V lines on Main, A/V
251 P-FAIL_S5V
S6V, S5V, 5V_GA, 5V_CTL,
S5V_ALG, S10V, S9V_AV
MAIN/AV, 9/5V S6V, S5V, S10V lines on Main, A/V
215 P-FAIL_15V
9V_LNS_SHT, 15V_LNS_MIR,
12V_FIL, 15V_PNL, 14V_AUD,
5V_AUD
M/AU, 15/12/9/5V
15V, 14V, 12V line on Motor/Audio
drive
236 P-FAIL_RLY
S12V_MIR, S12V_MIR1,
S12V_MIR2
RELAY, 12V S12V lines on Mirror drive
216 P-FAIL_S-5V S-6V, MAIN/AV, S-5V S-6V lines on Main, A/V
237 P-FAIL_PJ 3.3V1_NET, 5V_NET PJ_NET, 5/3.3V 3.3V, 5V on Network
71 FAN_MTR1 FN901 Lock FAN1, FANLOCK FN901 Power & Lock
159 FAN_MTR2 FN902 Lock FAN2, FANLOCK FN902 Power & Lock
158 FAN_MTR3 FN903 Lock FAN3, FANLOCK FN903 Power & Lock
4 FAN_MTR4 FN904 Lock FAN4, FANLOCK FN904 Power & Lock
63 FAN_MTR5 FN905 Lock FAN5, FANLOCK FN905 Power & Lock
114 FAN_MTR6 FN906 Lock FAN6, FANLOCK FN906 Power & Lock
3 FAN_MTR7 FN907 Lock FAN7, FANLOCK FN907 Power & Lock
62 FAN_MTR8 FN908 Lock FAN8, FANLOCK FN908 Power & Lock
IC4801
TE7783
61 P-FAIL_S1.2V_FRT S1.2V_FRT_INT FPGA, 1.2V SW FPGA1.2V, IC5201
IC301
PW392
343 FILTER DET FILTER CONDITION DETECT FILTER, DET Filter Cartridge is not installed
388 FILTER_COUNT MOTOR ERROR DETECT MOTOR, TIMEOUT Filter Motor Error
245
138
MIR1_DET
MIR2_DET
MIRROR POSITION SW MIRROR, ERROR Mirror Operation Error
281 PRESS_SENS PRESSURE SENSOR DETECT PRESS, ERROR Pressure is less than 500mmHg
IC5201 - - - FPGASW, CONFIG IC5201 Configuration Error
IC5201
183
182
SHUTTER_POS1
SHUTTER_POS2
SHUTTER POSITION SW SHUTTER, ERROR Shutter Operation Error