Sanyo PLC-UF15 Service Manual

ASS'Y POWER
Hot circuit
AC-INPUT
CPU IC801
and
I / O
EXPANDER
IC1831
SUB POWER
System Control
INTERLOCK SW
FUSE
SW902
F901
DC out
WARNING
TEMP.
READY
POWER-ON/OFF
IIC-SCL & SDA
AC
DC out
I / O
EXPANDER
POWER
CONTROL
SWITCH
INDICATORS
FAN
ON/OFF
FANS
FANS
POWER FAILURE CONTROL
LAMP
REPLACE
LAMP
Always
Switched
16V /9V /6.25V /-6V
-30-
* NO POWER -1
Troubleshooting
Power on/off
Fan on/off
PFC on/off
Ballast on/off
Power sw
OFF
Power sw
ON
Cooling time after power off.
400~600ms(Stability period of PFC.)
Timing chart
Isn't the lamp cover
of a projector
removed?
When it is removed, the
projector cannot be
turned on.
Is fuse (F901) blown?
Fuse may be opened
when either the LAMP
indicator or the READY
indicator isn't Illuminated.
Check the fuse.
For continued safety,
replace it with a new fuse
of the same type
Is the lamp cover attached
correctly? And has not the
boss(Inner side of the lamp
cover) broken?
Check the boss and the
Interlock switch (SW902).
SW902--open: Abnormality
Are the LAMP
indicator(red) and READY
indicator(green) light?
If the LAMP and READY
indicators are not illuminat-
ed, check the primary cir-
cuit and S5V of standby
power supply circuit.
Check that the
POWER FAIL sig-
nals are correct.
L: Abnormality
Check that the
Vcc-voltages are
correct.
Check that the POWER
ON/OFF signal is correct.
L: Abnormality
Check that the Fan
on/off signal is cor-
rect.
L: Abnormality
Check that the IIC
Bus signals for fan
control are correct.
Refer to next
page but one

Sanyo PLC-UF15 Specifications

General

Brand	Sanyo
Model	PLC-UF15
Category	Projector
Language	English