Panasonic PTD7700U - DLP PROJECTOR, Service Manual

Page: 71 / 132

14 Block Diagram
14.1. Power Supply
Power Supply
K-P.C.Board
A-P.C.Board (Video Signal Processor)
PA-P.C.Board (Power Factor Correction)
G-P.C.Board
(Fan Motor Control)
PC-P.C.Board (DC/DC Converter) PB-P.C.Board (Switching Power Supply)
Power Cord
Main
Power
Switch
K1
F9001
D9001
Interlock
Switch
Bimetal
Control circuit
Voltage
Feedback
OVP
Voltage
Detector
UVP
PA
1
Low Voltage
Power Supply
Igniter
Transformer
PWM
Control Current
Detector
D/A
Converter
STB15V
5V Reg.
5V
STB15V
12V
IC800
12V Reg.
IC807
Fan Sense
Power Good
Power Good
G2
IC706
Motor Driver
Control
IC806
IC809
Motor Driver
IC808
Motor Driver
IC810
IC802
G7
IC804
G4
IC805
G6
IC803
G5
Fan for
Power supply Fan for
DMD Fan for
Lamp2 Fan for
Lamp1
G12
G14
Motor for
Focus
Motor for
H-Shift
Motor for
V-Shift
Motor for
Zoom
Motor for
Mechanical
shutter
Motor for
Mechanical
diaphragm
PB3
PB1
PB3
PB6
PB6
PC1
PC1
PC9
PC9
PC1
PC9
PC9
REG
REG
Buck
Converter
IC1001
IC1003
15V(B) 0.2A
5V 4.1A
2.5V 8.5A
3.3V 5.7A
8V 1.65A
IC1004
IC1005
D0411
IC1010/IC1011
IC1002
Voltage
Feedback
Voltage
Detect
PB6
PB6
PB3
PA3
PA4
CN1
CN2A
A35
A27
A14
A34
PC2
CN1
-15V 0.1A
-8V 0.12A
12V 1.4A
STB5V 2.1A
STB15V 2.8A
Power Good
Power on/off
85V or less
IC0104
IC0104
IC0101/IC0103
MLT PLY
I sense
450V
or
more
DC380V
R0103,R0146
RL0101
D0103
D0104
Line
Filters
CN
2A
18V 5V
Q1 L2
D3
C9
R10
Fixed Power Control
CPU
HOT
COLD
Ballast 1
Ballast 2
Lamp+
Lamp-
Lamp on/off
Lamp Sense
EXF
Dimmer
IC0403
IC0401
DC380V
IC0411
IC0407
Control Circuit
15V
15V(B)
15V(A)
STB15V
D0413
12V
D0414
D0409
-15V
RL0402
Q0404
Motor Driver
G15
G16
3.3V
3.3V Reg.
IC801
SDATA,
SCLK
Voltage
Control
Voltage
Control
Voltage
Control
Voltage
Control
CPU
G1
PA5
Converter
Converter
Converter
Converter
4
Ignition Pulse Voltage
typ.15kVo-p
Lamp Voltage
Vla:60 130V
Output Power
300W/240W/160W
* See Ballast 1 for the circuit.
6
G9
HOT COLD
Photo-
coupler
IC0405
Photo-
coupler
IC0406
Photo-
coupler
IC0404
PT-D7700U / PT-D7700E
71