Eiki 1 122 511 01, Service Manual

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Troubleshooting
detection of power failure
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 "PF_AV", "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 connection Lines error information Failure area
IC4801
4 PF_AV
S3.3VAV, 1.2VAF,
S5V_AVD, S3.3VSI,
S1.2VSI, S3.3VTME, 5V
AV, AV Power supplies on AV
5 PF_MOTHER
S3.3VMF, 1.2VMF,
S2.5VMF, 5V_BUF, S9.6V
MOTHER, MOTHER Power supplies on Mother
6 PF_AD
S3.3VADA, 1.8VA,
2.5V_ADA
MAIN, AD AD circuit power supplies on Main
7 PF_F_FPGA
3.3VFFA, 1.2VFFA,
3.3VFFB, 1.2VFFB
MAIN, F_FPGA Front FPGA circuit power supplies on Main
9 PF_TH 12V MAIN, TH SW903, SW904, SW905, SW906
10 PF_PIC
S1.2V_PC1D,
S2.5V_PIC1A, 3.0V_PIC1
MAIN, PIC PIC circuit power supplies on Main
11 PF_LAN 3.3V_LAN RS232C, LAN LAN power supplies on RS232C
12 PF_25V 25V MAIN, 25V 25V power supply on Main
IC4811
4 PF_I/O S3.3V_I/O, S2.5V_USB MAIN, I/O S3.3V_I/O, S2.5V_USB power supplies on Main
5 PF_S16 S16V MAIN, S16V S16V power supply on Main
6 PF_S3.3V S3.3V MAIN, S3.3V S3.3V power supply on Main
7 PF_F_MOTOR S12V MAIN, S12V S12V power supply on Main
9 PF_KEY
1.8V_KEY,3.3V_KEY,
2.5V_KEY, 3.3VBF,
2.5VBF,1.2VBF
MAIN, KEYSTONE Keystone power supplies on Main
11 PF_GAM
HVDD,VVDD,15V_SHR,
15V_SHG, 1.8V_DDR,
1.0V_DDR
MAIN, GAM Gamma circuit power supplies on Main
12 PF_S-5V S-5V MAIN, S-5V S-5V power supply on Main
IC5681
(DC
POWER)
4 PF_FAN1 FN907, FN909 DC. FAN1 12VFAN3 and FN907, FN909
5 3
FN910, FN911, FN912,
FN913, FN914
DC, FAN2+3
12VFAN1, 12VFAN2, 12VFAN3 and FN910,
FN911, FN912, FN913, FN914
6 PF_FAN4 FN915 DC, FAN4 12VFAN2 and FN915
7 PF_FAN5 FN916 DC, FAN5 12VFAN2 and FN916
9 PF_FAN9 FN904, FN905, FN906 DC, FAN9
24VFAN3, 24VFAN4, 24VFAN6 and FN904,
FN905, FN906
10 PF_FAN8 FN901, FN902, FN903 DC. FAN8
24VFAN1, 24VFAN2, 24VFAN5 and FN901,
FN902, FN903
11 PF_FAN7 FN918 DC, FAN7 12VFAN2 and FN918
12 PF_FAN6 FN917 DC, FAN6 12VFAN2 and FN917
IC1801
8
9 FILTER_POSI1
FILTER_POSI2 FILTER_POSI1
FILTER_POSI2
ERR, FLT_MTR AMC Motor Error
63 PF_S5V S5V MAIN, S5V S5V power supply on Main
65 PF_PFC1 PFC1 PFC, PFC1 PFC1 error on PFC1
66 PF_PFC2 PFC2 PFC, PFC2 PFC2 error on PFC1
67 PF_PFC3 PFC3 PFC, PFC3 PFC3 error on PFC2
68 PF_PFC4 PFC4 PFC, PFC4 PFC4 error on PFC2
IC5201
209
178 FILTER_DET1
FILTER_DET2
FILTER_DET1
FILTER_DET2
ERR, FIL_DET AMC Error Detection
IC3401
305
354 POSITION_DET1
POSITION_DET2 POSITION_DET1
POSITION_DET2
ERR, SHUT_MTR Shutter Motor Error Detection
IC301
414 PRESS_SENS PRESS_SENS ERR, PRESSURE IC886 (Pressure Sensor) Error Detection
- IIC Device Error IIC ERR, IIC_DATA IIC Communication Error
-
SLOT1_SDA/SLOT1_SCL
IIC SLOT3 Slot1(3) Error
-
SLOT2_SDA/SLOT2_SCL
IIC SLOT4 Slot2(4) Error
Power failure detection system