-156-
Troubleshooting
PFC
MAIN
POWER(AC)
K16E
K47E
K16A
K16C
PFC1
CIRCUIT
PFC2
CIRCUIT
Q1657
Q1608 Q1658
Q1607
RL1601
1
2
RL1651
IC1651
IC1601
K16B
PFC1_SW_PFC2_SW
Lamp-On: H
PF_PFC1/PF_PFC2
Error: L
LAMP2
BALLAST2
CN1C
CN2C
CN3C
LAMP1
BALLAST1
CN1B
CN2B
CN3B
PFC2_SW
PFC1_SW
PF_PFC2
PF_PFC1
PFC_SW4
PFC_SW3
PF_PFC4
PF_PFC3
PFC12V2
PFC12V1
7 6 21
7 6 21
PC1651PC1601
Power (PFC)
●Flow chart of projector condition
AC OFF
(with AC power supply and Mains SW : ON)
(90 sec.)
(90 sec.)
(Lamp : OFF)
(Lamp : ON)
(Lamp : OFF)
<ACCIDENT>
(20 sec.)
(15 sec.)
(B)
(A)
(with signal or any button)
(with signal
or any button)
(no signal for 30 sec.)
(no signal for
user setting time)
STAND-BY COOLING
POWER ON
POWER OFF
WARNING
NORMAL
LAMP TIME
DISPLAY
SERVICE
MODE
SUSPEND
COUNTDOWN
SUSPEND
COOLING
<RECOVER>
<ACCIDENT>
(Lamp error)
SUSPEND
(ON/OFF button
or SERIAL)
(Lamp : ON)
(ON/STAND-BY button)
(ON/OFF button)
(A) : Press and hold MENU and SELECT
buttons on the projector for more
than 3 seconds
(B) : Press and hold POWER ON/STAND-
BY button on the projector or on the
remote control unit for more than 20
seconds.
Check that the lamp drive signals
(PFC1_SW, PFC2_SW) are correct.
Lamp-On: H
If the power failure occurs on the PFC1 or
PCF2 circuit, the detection signal (PF_PFC1,
PF_PFC2) becomes Low.