PT-LB20NTU, PT-LB20NTE, PT-LB20NTEA, PT-LB20U, PT-LB20E, PT-LB20EA, PT-LB20SU, PT-LB20SE, PT-LB20SEA, PT-LB20VU, PT-LB20VE, PT-LB20VEA - Panasonic Projector Service Manual (repair manual). Page 43

Read Panasonic PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA Service Manual online

11 Block Diagram
11.1. Power Supply
Power Supply
3
4
1
B1
B4
Q2
STEP-DOWN CHOPPER
Power  Cord
AC IN
K1
K2
F9101
Z101
TH101
1
4
P3
5
7
8
12
PHOTOISOLATOR
15 V AVR
HALF BRIDGE
DRIVER
(SLAVE)
SWITCHING
TRANSFORMER
RECTIFIER
SWITCHING
REGULATOR
PHOTOISOLATOR
POWER
FACTOR
CORRECTION
LAMP
D9608
Q9608
D9609
Q9610
Q204
Q205
Q9611
Q9606
Q107
Q9607
IC9602
IC9603
D9611
Q9609
D9612
MAIN/STB
3.4 V
DC380 V
THERMOFUSE
Power Control
ST1
Lamp ON/OFF
L det
3.4 V
+6 V
FAN 14 V
STB 3.4 V
+17 V
11
3
4
1
P2
P1
HALF BRIDGE
DRIVER
(MASTER)
PHOTO-
ISOLATORS
D9604
Q9604
Q9614
Q9603
D9605
D9606
D
S
D
S
G
Q9605
D9607
B3
B5
B6
Q1
D
S
G
3
5
1
4
2
Q3
LINE
FILTER
LINE
FILTERS
15 V
15 V
3
IGNITER
BLOCK
MC202
INTERLOCK
SWITCH
G
D
S
G
D
S
D
S
G
G
IC102
A-P.C.Board
A6
K-P.C.Board
B-Module
B/Q-Module
P-Module
Q-Module
 (CONTROLLER)
HOT
COLD
HOT
COLD
A-P.C.Board
A4
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA
43

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