PT-LW330, PT-LW280, PT-LB360, PT-LB330, PT-LB300, PT-LB280 (serv.man2) - Panasonic Projector Service Manual (repair manual). Page 84

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DIA-2
SCH
Schematic Diagrams
MAIN
AC
B08
B03
FN3001
FN3002
FN3003
FN3004
FN3005
B05/B07
Speaker
B04
B11
B02
B10
B06
B01
B09
FILTER
POWER
3
4
5
6
7
8
9
1
1
2
3
4
5
6
7
8
9
10
1
2
BALLAST
R
LCD
PANEL
R
LCD
PANEL
R
LCD
PANEL
IRIS
TEMP.
SENSOR A
IR (FRONT)
1
2
3
1
3
2
2
2
2
2
1
1
1
1
3
3
3
3
1
1
1
RXD
1 2
1
2
2
2
2
GND
3
3
S3.3V
4
Lamp_SW
TXD
5
3
1
2
3
1
2
3
1
2
3
4
5
1
2
3
4
5
1
2
3
4
1
2
3
4
1
2
3
1
2
3
6
6
1
2
1
40
1
40
1
40
1
40
1
40
1
40
J9001
J9002
J9003
Panel_R
Panel_G
Power_Out
Lamp_Out
Lamp_Cold
FAN_C
FN3001
FN3002
FN3003
FN3004
FN3005
P5030
P3003
P3001
1
5
GND
GND
GND
GND
S16V
S16V
NC
S16V
S16V
PFC_ON
PTH
120
15.5V
380V
GND
LAMP
PHG231A11PXG
GND
GND
GND
GND
S16V
S16V
S-5V
S16V
S16V
PFC_ON
FAN_A
FAN_B
P3004
P3006
P3002
K2006
K2004
K2003
AC
100~240V
K2008
AC Socket
AC IN~
100~240V
IRIS
6
7
8
9
10
6
7
8
9
10
FAN_C
P5030
 
 
 
 
 
B12
IR (REAR)
Caution
Components indicated by a mark   in this schematic diagram have 
the special significance in the safety. It is therefore, particularly 
recommended that the replacement of those parts must be made 
by exactly the same parts. Unauthorized substitutions may result 
in fire or accident.
This project is isolated from AC line by using the internal converter 
transformer. 
Please pay attention to the following notes in servicing. 
1.  Do not touch the part on the primary circuit or both the primary 
and secondary circuits at the same time. 
2.  Do not shorten the circuit between the primary and secondary 
sides. 
3.   The grounding lead must be connected to the ground of the 
same circuit when measuring the voltage and waveform. 
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