DOWNLOAD Panasonic PT-TW343RE Service Manual ↓ Size: 19.44 MB | Pages: 91 in PDF or view online for FREE

2

3

1

3

2

1

8

5

6

4

Q5004

29

28

17

16

42

11

39

24

7

12

23

18

OUT_DET_EXT

IC5202

PT2830

IC1001

PW878LHB

K1203

PC_R

K1

20

3

PC_L

VEDIO_R

K1202

VEDIO_L

CLK

LRCLK

DATA

SD_MCU

OUTR

OUTL

P5003

Q5003

5

2

7

5

2

7

5

2

7

FANC_SW

H6

3

3

3

FANC_ERR

FAN ERR

AA10

Lamp_cold

FN3005

1
2

D3014

W13

FANC_DA

Power_out

FN3004

1
2

IC3280

FR9888

D3008

7

0

0

3

D

3

8

2

3

Q

D3011

IC3250

FR9888

H5

Lamp_out

FAN_SW

FN3003

1
2

FN3002

1
2

T12

FANB_DA

D3006

IC

100

1

P

W

87
8

Y12

FANA_DA

Panel_B/G

Q3361

Q3030

D3005

IC3009

FR9888

Panel_R

S16V

FAN_A

FN3001

1
2

FAN_C

FAN_B

R/C

C1

2

1

2

1

 

E4

LAMP COVER SW

1

2

3_3SDA

E1

LAMP_EN

10

IC1002

TEMP 
SENSOR 2

TEMP 
SENSOR 3

TEMP SENSOR 3

<AT30TS75>

IC1002

<AT30TS75>

IC3001

<AT30TS75>

3_3SCL

P3006

3
2

8

P3002

IC3100

GL810S

5

BALLAST

LAMP cooling Fans

Exhausting FANS

LCD PANEL
 COOL ING FANS

FAN_ERR

Power ERR: ON

P3001

4

`

MAIN

AC

B07

B03

FN3001

FN3002

FN3003

FN3004

FN3005

B05

Speaker

B04

B10

B02

B09

B06

B01

B08

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

 

 

 

 

 

B11

IR (REAR)

B12

INTERACTIVE 

ADAPTOR

INTERAC

TIVE CAMERA 

MODULE

-   When all of LED indicators are off, the symptom indicates that the primary power supply circuit does not 

operate properly. Check the power primary circuit and parts as follows;

    

1. AC cord, F2001A/B (Fuse), filter board, POWER board, thermal switch.

   

2. The thermal switch opens when the surrounding temperature exceeds 120°C.

This projector provides a function which can be specified a defective area simply by indicating the LEDs/ Connect 
the AC cord and press 

 button once and then check the LED indication. 

-   When the WARNING (orange) and POWER (orange) indicators are flashing, the symptom indicates that the 

projector detected an abnormal temperature risen inside the projector. Check the air filters and remove the 

object near the intake and exhaust fan openings, and wait until the POWER indicator stops flashing, and then 
try to turn on the projector. 

   The internal temperature is monitored by sensor IC1002/IC1003 on the MAIN board and IC1902 of the 

temperature control board. 

-   When the WARNING indicator lights orange, the symptom indicates that the projector detected an abnormality 

in the cooling fan operation or in the power supply secondary circuits. Check fan operation and power supply 
lines, and the driving signal status.

When the abnormality occurs inside the projector, the P_FAIL signal (Error: L), FAN_ERR signal (Error: L), 

signal (Error:L) are sent to IC1001. And IC1001 sends the shutdown signal LAMP_DC_ON to the power supply 
circuit and the secondary power supply will be cut off and signal, viaIC3100 and P3002<lamp cover switch>, 

LAMP_ENto the lamp POWER board to cut off the power supply.

  An abnormality occurs on the secondary power supply;

   

Check the S16V check signal. P_FAIL signal becomes low when the abnormality occurs. 

  An abnormality occurs on the fan control circuit;

  

 If fans FN3001, FN3002, FN3003, FN3004 or FN3005 has an error, the FAN_ERR and P_FAIL signal 
become "L". 

  

 If the FAN_ERR signal becomes "L", the FAN_ERR signal will cut off the LAMP_EN signal provided for 
the lamp power circuit.

Make sure that the lamp cover is mounted correctly. If not or 
the lamp cover removed, the lamp does not light on for the 
safety. Check the lamp cover and lamp cover switch (KW10). 

Lamp cover switch (KW10)