Power Failure Detection System; Error Information Table - Sanyo PLC-XTC50AL Service Manual

Chassis Description

Power failure detection system

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
IC501<FPGA>, IC4801 <I/O Expander> and then outputs the signal "LAMP_DC_ON_EX" from pin 3. 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

Ic Pin Signal Name
194 P-FAIL_1.0V
 P-FAIL_S1.8V_KS
45 P-FAIL_S.5V_KS
8 P-FAIL_S3.3V
51 P-FAIL_S5V
15 P-FAIL_15V
IC501
FPGA
36 P-FAIL_RLY
XC3S50
16 P-FAIL_S-5V
37 P-FAIL_PJ
71 FAN_MTR1
159 FAN_MTR
158 FAN_MTR3
4 FAN_MTR4
63 FAN_MTR5
114 FAN_MTR6
3 FAN_MTR7
6 FAN_MTR8
IC4801
61 P-FAIL_S1.V_FRT
TE7783
343 FILTER DET
388 FILTER_COUNT
IC301
45 MIR1_DET
PW39
138 MIR_DET
81 PRESS_SENS
IC501 - -
183 SHUTTER_POS1
IC501
18 SHUTTER_POS
connection Lines
1.0V
S1.8VSK_KS, S1.8VMPLL_KS,
S1.8VAA_KS
.5V_KS, S.5VAC_KS,
S.5VAB_KS, S.5VAA_KS
S3.3V, S4.3V, S3.3V_DVI,
3.3V, 3.3V_AD, S3.3VAA_KS,
S3.3VAB_KS,
S5V, 5V_GA, 5V_CTL, S5V_ALG,
S10V, 9V_AV
9V_LNS_SHT, 15V_LNS_MIR,
1V_FIL, 15V_PNL, 14V_AUD,
5V_AUD
S1V_MIR, S1V_MIR1,
S1V_MIR
S-6V,
3.3V1_NET, 5V_NET
FN901 Lock
FN90 Lock
FN903 Lock
FN904 Lock
FN905 Lock
FN906 Lock
FN907 Lock
FN908 Lock
S1.V_FRT_INT
FILTER CONDITION DETECT
MOTOR ERROR DETECT
MIRROR POSITION SW
PRESSURE SENSOR DETECT
-
SHUTTER POSITION SW
-85-
error Information Failure Area
GAMMA, 1V Gamma, IC401, IC1411
KS, 1.8V Keystone, IC301, IC371
KS, .5V Keystone, IC301, IC381
MAIN/AV, 3.3V 3.3V, 4.3V lines on Main, A/V
MAIN/AV, 9/5V S6V, S5V, S10V lines on Main, A/V
15V, 14V, 1V line on Motor/Audio
M/AU, 15/1/9/5V
drive
RELAY, 1V S1V lines on Mirror drive
MAIN/AV, S-5V S-6V lines on Main, A/V
PJ_NET, 5/3.3V 3.3V, 5V on Network
FAN1, FANLOCK FN901 Power & Lock
FAN, FANLOCK FN90 Power & Lock
FAN3, FANLOCK FN903 Power & Lock
FAN4, FANLOCK FN904 Power & Lock
FAN5, FANLOCK FN905 Power & Lock
FAN6, FANLOCK FN906 Power & Lock
FAN7, FANLOCK FN907 Power & Lock
FAN8, FANLOCK FN908 Power & Lock
FPGA, 1.V SW FPGA1.V, IC501
FILTER, DET Filter Cartridge is not installed
MOTOR, TIMEOUT Filter Motor Error
MIRROR, ERROR Mirror Operation Error
PRESS, ERROR Pressure is less than 500mmHg
FPGASW, CONFIG IC501 Configuration Error
SHUTTER, ERROR Shutter Operation Error