Power Failure Detection System; Error Information Table - Eiki LC-HDT1000 Service Manual

Troubleshooting

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 "PF_S5V", "PF_S3.3V", etc. are connected to
the power supply lines and fans. When the failure occurs, IC301<Scaler> receives an error information through the
ICs<I/O EXPANDER> and then outputs the signal "PFC_SW" from pin 28 of IC5201 to stop the power supply.

Error information table

ic Pin signal Name
4 PF_AV
5 PF_MOTHER
6 PF_AD
IC4801
7 PF_F_FPGA
9 PF_TH
10 PF_PIC
11 PF_LAN
12 PF_25V
4 PF_I/O
5 PF_S16
6 PF_S3.3V
7 PF_F_MOTOR
IC4811
9 PF_KEY
11 PF_GAM
12 PF_S-5V
6 FAN12V_PF3
7 FAN_PF1
IC3603
9 FAN12V_PF5
(Power
10 FAN_PF2
DC)
11 FAN12V_PF7
12 FAN_PF3
4 PF_FANDC_D1
5 PF_FANDC_D2
IC7891
6 PF_FANDC_E
(Lamp
10 PF_FAN_D1
Fannet)
11 PF_FAN_D2
12 FN_FAN_E
63 PF_S5V
IC1801 67 PF_PFC3
68 PF_PFC4
IC301 414 PRESS_SENS
IC5201 209 FILTER_DET1
346 FILTER_COUNT
305 POSITION_DET1
IC3401
354 POSITION_DET2
IC301 - IIC Device Error
IC301 -
SLOT1_SDA/SLOT1_SCL
IC301 -
SLOT2_SDA/SLOT2_SCL
connection Lines error information
S3.3VAV, 1.2VAF,
S5V_AVD, S3.3VSI, AV,
S1.2VSI, S3.3VTME, 5V
S3.3VMF, 1.2VMF,
MOTHR, MOTHER
S2.5VMF, 5V_BUF, S9.6V
S3.3VADA, 1.8VA,
MAIN,
2.5V_ADA
3.3VFFA, 1.2VFFA,
MAIN,
3.3VFFB, 1.2VFFB
12V MAIN,
S1.2V_PC1D,
MAIN,
S2.5V_PIC1A, 3.0V_PIC1
3.3V_LAN RS232C,
25V MAIN,
S3.3V_I/O, S2.5V_USB MAIN,
S16V MAIN,
S3.3V MAIN,
S12V MAIN,
1.8V_KEY,3.3V_KEY,
2.5V_KEY, 3.3VBF, MAIN, KEYSTONE
2.5VBF,1.2VBF
HVDD,VVDD,15V_SHR,
15V_SHG, 1.8V_DDR, MAIN,
1.0V_DDR
S-5V MAIN,
12VF1 SUBPOW, 12VF1
FN901, FN902, FN903,
FAN,
FN904 FANLOCK
12VF2 SUBPOW, 12VF2
FN905, FN906 FANLOCK FAN,
12VF3 SUBPOW, 12VF3
FN908, FN909, FN912
FAN,
FANLOCK
FANDC_D1 NET,
FANDC_D2 NET,
FANDC_D NET
FN910 FANLOCK FAN,
FN911 FANLOCK FAN,
FN907 FAN,
S5V MAIN,
PFC1 MAIN,
PFC2 MAIN,
PRESS_SENS ERR, PRESSURE
FILTER_DET1 ERR,
FILTER_COUNT ERR,
POSITION_DET1
ERR, SHUT_MTR
POSITION_DET2
IIC ERR,
IIC SLOT3
IIC SLOT4
-165-
Failure area
AV Power supplies on AV
Power supplies on Mother
AD AD circuit power supplyies on Main
F_FPGA Front FPGA circuit power supplies on Main
TH SW902, SW903, SW904
PIC PIC circuit power supplies on Main
LAN LAN power supplies on RS232C
25V 25V power supply on Main
S3.3V_I/O, S2.5V_USB power supplies on
I/O
Main
S16V S16V power supply on Main
S3.3V S3.3V power supply on Main
S12V S12V power supply on Main
Keystone power supplies on Main
GAM Gamma circuit power supplies on Main
S-5V S-5V power supply on Main
12VF1 power supply on Power(DC)
FAN_A FN901, FN902, FN903, FN904
12VF2 power supply on Power(DC)
FAN_B FN905, FN906
12VF3 power supply on Power(DC)
FAN_C FN908, FN909, FN912
FANDC_D1 FANDC_D1 power supply on Lamp Fannet
FANDC_D2 FANDC_D2 power supply on Lamp Fannet
FANDC_E FANDC_E power supply on Lamp Fannet
FAN_D1 FN910
FAN_D2 FN911
FNA_E FN907
S5V S5V power supply on Main
PFC3 PFC1(3) error on PFC
PFC4 PFC2(4) error on PFC
IC886 (Pressure Sensor) Error Detection
FIL_DET Filter Cartridge Error Detection (SW6581)
FIL_MTR Filter Motor Error Detection (M901)
Shutter Motor Error Detection
IIC_DATA IIC Communication Error
Slot1(3) Error
Slot2(4) Error