Panasonic PTLB80NTU - LCD PROJECTOR, Service Manual

Page: 43 / 118

11 Block Diagram
11.1. Power Supply
Power Supply
FAN 14 V
STB 3.4 V
G G
3
4
1
B1
B4
Q2
K2-P.C.Board
K1-P.C.Board
B-Module
B/Q-Module
P-Module
Q-Module
(CONTROLLER)
STEP-DOWN CHOPPER
Power Cord
AC IN
K4
K5
F9101
D9101
4
P3
5
7
11
HOT COLD
HOT COLD
PHOTOISOLATOR
15 V AVR
SWITCHING
TRANSFORMER
SWITCHING
REGULATOR
PHOTOISOLATOR
POWER
FACTOR
CORRECTION
LAMP
D9608
Q9608
D9609
Q9610
Q204
Q9611
Q9606
Q9607
IC9602 IC9603
D9611
Q9609
D9612
PWON
3.4 V
DC380 V
THERMOFUSE
Power Control
ST1
Lamp ON/OFF
L det
+6 V
+17 V
9
1
3
4
1
P2
P1
PHOTO-
ISOLATORS
D9604
Q9604
Q9614
L9604
C9610
D9601
Q9603
D9605
L9605
C9617
C9618
D9606
D
S
Q9605
D9607
B3
B6
B5
Q1
3
6
1
4
2
Q3
Vla ckeck
7
Information Select
5
LINE
FILTER LINE
FILTER
15 V
15 V
4 2
INTERLOCK
SWITCH
G
D
S
G
D
S
D
S
G
G
Q107
A-P.C.Board
A4
RECTIFIER
D
S
D
S
HALF BRIDGE
DRIVER
(MASTER) HALF BRIDGE
DRIVER
(SLAVE)
Q203 Q202
IC202
K3
K2 K1
SW SW
4 2 1 2 4 1
18 V
MAIN/STBY
STB 3.3 V
STB 14 V
6 V
3.3 V
FAN 4-13.5 V
A6 A7 A9
A5
Z1
to C
from C
1 3
1 3
A-
P.C.Board
Z-P.C.Board
DIRECT POWER OFF
+
for
Exhaust
Fan ( )
PT-LB80NTU / PT-LB80NTE / PT-LB80NTEA / PT-LB80U / PT-LB80E / PT-LB80EA / PT-LB75NTU / PT-LB75NTE / PT-LB75NTEA / PT-LB75U / PT-LB75E / PT-LB75EA
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