Sanyo PLC-UF15 Service Manual

-36-
LAMP ABNORMALITY -2
Troubleshooting
BALLAST-2 ON/OFF
LAMP-2 MONITOR
BALLAST-1 ON/OFF
LAMP-1 MONITOR
LAMP
BALLAST-1
LAMP
BALLAST-2
UNIT PFC
PFC-1 ON/OFF
PFC-2 ON/OFF
AC-INPUT
RL12V
CN1
CN4
CN2
12V (+B)
IC1801
I /O EXP.
U20B47200
PFC-2
TEMP. SW
CONTROL
FET
CN3
PFC-1
TEMP. SW
CONTROL
FET
AC 90V~264V
OUTPUT
DC 380V~400V
TEMP. SW
85˚C
85˚C
H: ON
H: ON
STABILISER
( CHOPPER )
LAMP
DRIVER
IGNITER
LAMP MONITOR
LAMP ON/OFF
CONTROL
X1
CB
X2
MAINS ISOLATION
LAMP
ASS'Y
UNIT P.F.C.
IC1801
I/O EXP.
Output voltage.
At the time of a start : 8KVp-p
At the time of stability : AC 95V typ. (80~110V)
Output Frequency : 90 Hz typ.
DC INPUT
DC380~400V
UNIT LAMP BALLAST
H : Abnormality
H : ON
U20B46000
TEMP.
SENSOR
85˚C
Check the unit P.F.C..
Check the unit lamp Ballast.
Has not the temperature
switch operated?
If the temperature around
FET reaches 85 degrees, the
PFC circuit will be shut down.
Check!
Check!
Check! Check!
When the temperature
around a lamp driver reaches
85 degrees, unit lamp ballast
will be shut down and a lamp
monitor signal changes to H
from L.
Check!
Check!
Check!
Check!
When this output voltage
reaches abnormal voltage
(exceeds AC-130V), unit lamp
ballast will be shut down and a
lamp monitor signal changes
from L to H.
Caution : "HOT" Circuit !
Caution : "HOT" Circuit !
Check!

Sanyo PLC-UF15 Specifications

General

Brand	Sanyo
Model	PLC-UF15
Category	Projector
Language	English