Sanyo PLV-WF10 Service Manual page 60

UNIT LAMP BALLAST
UNIT LAMP BALLAST
K7B
UNIT P.F.C.
DC INPUT
DC380~400V
K7A
LAMP MONITOR
IC1801
I/O EXP.
LAMP ON/OFF
UNIT SUB POWER
Unit Sub power
6.3V
9V
16V
-5V
U20B39500/39800
STABILISER
( CHOPPER )
H : Abnormality
H : ON
MAINS ISOLATION
E C
FAN-C
Q6
B E C
FAN-A
Q2
B E C
FAN-B
Q9
B
Air-flow control signal
Air-flow control signal
Air-flow control signal
Q18 3.3V
IC4
5V
Q16
Q12
Q14 -5V
LAMP
IGNITER
DRIVER
TEMP.
SENSOR 85˚C
CONTROL
FAN-C FAN-C
K66E
K66H
1 2 3 1 2 3 4 5
PF-4 PF-4 PF-4 PF-6
TP7611 TP7611
PF-5
PF-3
PF-7
IC2 IC5
10 14 12 2 SCL
7 3 13 3 SDA
9
IC1
7 3 14 4
9
I / O Expander
Fan on/off signal
H : ON L : OFF
16VA
L5
PF-1
L7 16V
Power On / Off Signal
-60-
LAMP
K7C
ASS'Y
Output voltage.
At the time of a start : 20KVp-p
At the time of stability : AC 85V typ. (70~100V)
Output Frequency : 88 Hz typ.
FAN-A FAN-B
K66F
1 2 3 4 5 6
PF-8
TP7613 TP7613
IC6
SCL
PF-1 4 2
PF-3 6
SDA
PF-4 7 3
PF-5 9
PF-6 10
PF-7 11
PF-8 12
Power Failure
SCL
SDA
Power On / Off Signal
3.3V
9V
6.3V
5V
16VA
-5V
16V