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PN-655E

TROUBLESHOOTING

5 – 1

Check the adjustment and setting for any abnormality.

Readjust and reset with the menu.

Is input selection set to signal input?

Adjust the input source properly.

Use a Dsub 15pin cable.

Digital connection only
    Is the graphic board resolution proper?

Replace the graphic board. 

Check the video input signal for any abnormality. 
    Check the video cable. 
    Check that the video signal is not a special one (out of support).

Replace the abnormal part.

Is the menu displayed under the signal input state?

Replace the abnormal part. 

Replace the abnormal part.

Is the battery power alive?

NO

Replace the battery.

Replace the abnormal part.

Replace the abnormal part.

Is the AC cord properly inserted?

NO

Insert the AC cord properly.

Is the power SW turned ON?
Is the power SW free from any abnormality?

NO

NO

Replace the abnormal part.

YES

YES

NO

Replace the abnormal part.

Replace the abnormal part.

No abnormality 

Replace the abnormal part.

YES

YES

No abnormality

No abnormality

Yes

Yes

Yes

Yes

No abnormality

Abnormality

Abnormality

Abnormality

Abnormality

Abnormality

Abnormality

Abnormality

Abnormality

No

Yes

No

No

No

Does the main power PWB supply power voltages of STB5V/ 
5V/ 12V/ 24V?
Does the sub power source supply 24V?

Note: If the signal input is not supplied, the power save 

function is operated to interrupt the output of 5/12/ 
24V from the sub power source. 

Check the power PWB and related sections for any 
abnormality. 
   Check the fuse for breakage. 
   Check the main/sub power sources. 
   Check the switch cable.  
   Check the filter block.
   Check the AC power cord.

Check the I/F 1 PWB and the related parts for any abnormality. 
   Check the power cable.  
   Check the fuse for breakage.  
   Check the I/F 1 PWB.

Check the key PWB and the related parts for any abnormality. 
   Check the connection cable.  
   Check the key PWB.

Check the key PWB and the related parts for any abnormality. 
   Check the connection cable. 
   Check the key PWB.

Check the I/F 1 PWB and the related parts for any abnormality. 
   Check the connection cable.  
   Check the fuse for breakage.  
   Check the PWB.

Analog RGB connection only 
   Is a BNC cable used?

Check the I/F 1 PWB and the related parts.
    Check the connection cable.  
    Check the fuse for breakage. 
    Check the PWB.

Check the LCD module and the related parts for any abnormality.
     Check the connection cable.  
     Check the LCD control PWB.

Check the I/F 1 PWB and the related parts for any abnormality. 
    Check the connection cable.  
    Check the fuse for breakage.  
    Check the PWB.

PN-655E

TROUBLESHOOTING

5 – 2

When the power is turned on, the backlight lights up for several seconds.

YES

Refer to "3. The display doesn't show / Display abnormality".

Does the main power PWB supply STB5V/ 5V/ 12V/ 24V?
Does the sub power PWB supply 24V?

Refer to "1. The power is not supplied".

Replace the abnormal part.

Replace the abnormal part. 

Is the sound volume is set to the minimum or mute?

Readjust and reset. 

Replace the abnormal part. 

Replace the abnormal part.

Replace the abnormal part.

Replace the abnormal part.

Replace the abnormal part.

Check the adjustment and setting for any abnormality.

Readjust and reset with the menu.

Replace the abnormal part.

Replace the abnormal part.

Yes

NO

No abnormality

NO

No abnormality

No abnormality

No abnormality

No abnormality

No abnormality 

No abnormality 

No

Abnormality

Abnormality

YES

Abnormality

Abnormality

Abnormality

Abnormality

Abnormality

Abnormality

Abnormality

Abnormality

Check the inverter and the related parts for any abnormality. 

Check the connection cable.  
Check the CCFT lamp.

Check the I/F 1 PWB for any abnormality. 

Check the connection cable.  
Check the fuse for breakage.  
Check the I/F PWB.

Check the audio input signal for any abnormality. 

Check the cable connection. 
Check the audio cable. 

Check the audio output cable for any abnormality. 

Check the cable connection. 
Check the audio cable. 

Check the external speaker and the related parts for any abnormality. 

Check the speaker cable. 
Check the speaker.  
Check the speaker impedance.

Check the I/F 2 PWB and the related parts for any abnormality. 

Check the connection cable.  
Check the fuse for breakage.  
Check the PWB.

Check the I/F 1 PWB and the related parts for any abnormality. 

Check the connection cable.  
Check the fuse for breakage.  
Check the PWB.

Check the DVI cable for any abnormality. 

Check the DVI cable connection.

Check the I/F 1 PWB and the related parts for any abnormality. 

Check the connection cable.  
Check the fuse for breakage.  
Check the PWB.

PN-655E

TROUBLESHOOTING

5 – 3

Abnormality

No abnormality

No abnormality

No abnormality

Does the main power PWB supply STB5V/ 5V/ 12V/ 24V?
Does the sub power PWB supply 24V?

Replace the abnormal part.

Replace the abnormal part.

Replace the abnormal part.

Replace the abnormal part.

Replace the abnormal part.

Yes

Abnormality

Abnormality

Abnormality

Abnormality

No

Check the power PWB and the related parts for 
any abnormality. 

Check the fuse 

for breakage. 

 

Check the main/sub power source. 
Check the switch cable.  
Check the filter block. 
Check the AC power cord. 

Note: If the signal input is not supplied, the power save function is 

operated to interrupt the output of 5/ 12/ 24V from the sub 
power source. 

Check the inverter and the related parts for any abnormality. 

Check the connection cable.  
Check the CCFT lamp.

Check the I/F 1 PWB for any abnormality. 

Check the connection cable.  
Check the fuse for breakage.  
Check the I/F PWB.

Check the I/F 2 PWB and the related parts for any abnormality. 

Check the connection cable.  
Check the fuse for breakage.  
Check the PWB.

Check the sensor PWB for any abnormality. 

Check the connection cable. 

PN-655E

HARDWARE DESCRIPTIONS

6 – 1

The main power unit is composed of the main power source 

ETXSH622MEE (RDENC1010MPPZ), the sub power source 

ETXSH623MCA (RDENC1011MPPZ), and theh filter block 

ETXSH623MEB (RUITK1010MPPZ).

■ Outline specifications

■ LCD module LK645D3LZ19

This module is an active matrix transmission-type LCD display module

which employs amorphous silicon thin film transistor (TFT: Thin Film 

Transistor).
It is composed of the color TFT-LCD panel, the driver IC, the control cir-

cuit, the power circuit, the inverter circuit, and the backlight unit. For the

interface, the LVDS (Low Voltage Differential Signaling) is used. By sup-

plying DC power of 

×

 12V and 

+

24V and the backlight power, this mod-

ule displays images and text in 16,777,216 colors on the panel of 1920

×

 RGB 

×

 1080 dot. The DC/AC inverter is also provided for driving the

lamp. 

The backlight is of the direct radiation system employing 36 CCFT’s

(Cold Cathode Fluorescent Tubes). 

Caution: When the brightness reaches 50% of the default value under

continuous lighting with controlled light (100%) at Ta 

=

 25°C, it

is judged as the end of life.

The I/F PWB 1 controls the temperature sensor, the remote controller,

the switch, the LED, the LCD display, and the inverter. 

(1) Input/ Output signal

(2) Major component parts and functions

The I/F PWB 2 controls the sound circuit. 

(1) Input/Output signal

(2) Major component parts and functions

The key PWB is provided with the remote controller light receiving sec-

tion, the switch, and the LED module. 

The sensor PWB monitors the set temperature with the thermistor. In

case of an abnormality, the red LED lights up and the machine enters

the power standby state. 

Main power 

source

Sub power 

source

Remark

Rated input

100Vac
50Hz/60Hz

100Vac
50Hz/60Hz

Power 
consumption

450W max

335W max.

At 100V ac, 60Hz, 
Rated load

STB5V output 5.1V  1.5A

---

5V output

5.1V  1.0A

---

12V output

12.2V  4.0A

---

19V output

19.2V  2.0A

---

24V output

24.3V  11.0A

24.3V  11.0A

Item

Content

Unit

1

Screen size

163.9 (65 type) diagonal

cm

2

Drive display area

1428.48 (H) 

×

 803.52 (V)

mm

3

Max. brightness

400 (Typ.)

cd/m

2

4

Backlight life (Note 1)

60000

hour

Specifications

Used connector

AV signal

Composite video/Component 
video input pin

BNC 

×

 4

D4 video input pin

D pin

PC signal

Analog input pin 
(VESA conformity)

D-sub 15p

Digital input pin (DVI conformity)

DVI-D pin

Digital output pin (for daisy chain)

DVI-D pin

Audio input pin

φ

 3.5 jack

RS-232C input pin

D-sub 9p

Monitor control

RS-232C 
(bi-directional communication)

D-sub 9p

Reference

Model name of part

Function of part

IC2

BR24L02F

DDC, EEPROM for analog PC

IC4

BR24L02F

DDC, EEPROM for digital PC

IC3

SM5301CS

Video buffer which is provided with
the LPF conforming to the video sig-
nal band 

IC5

Sil1161

TMDS receiver for DVI-D

IC9, 18

Sil1160

TMDS transceiver for DVI-D

IC10

GM1601

Scalar IC which is provided with a 
microcomputer

IC11, 12

BR24L16FV

16kbit EEPROM (Stores setup data.)

IC13

PCF8575

16bit I/O expander conforming to I2C

IC14

AT49F040A

4Mbit flash memory 
(Stores the program.)

IC15

NT5DS4M32EG-5

128Mbit DDR SDRAM
Used as the image memory of 
GM1601 (IC10).

I C19

MT48LC2M32B2

64Mbit SDRAM
Used for realizing high quality picture
of FLI2310 (IC24).

IC20

MST9883

3ch A/D converter

IC21

VPC3230D

Video decoder

IC22

UPD64084GC

Performs the 3-D signal process of
the NTSC signal. High-precision Y/C
separation is performed by the 4Mbit
frame delay memory.

IC24

FLI2310

Progressive scan engine which per-
forms high-level film mode process-
ing of optimized video quality

IC28

PC16552D

Dual UART which is provided with
the FIFO (16byte) 
(Used for RS-232C communication)

IC40, 41

CBTLV16292

12bit multiplexer 

IC25, 26

MAX3243CDB

Transmitter/ receiver for RS-232C

Specifications

Used connector

Audio signal

Audio input pin

RCA pin 

×

 2

Audio output pin

RCA pin 

×

 2

Speaker output

C o nfo r m s to  6 oh m
speaker

Speaker pin

Reference

Model name of part

Function of part

IC1

MSP3440G

Sound processor

IC2

NJU26901

Delay IC for digital audio

IC3

TA2024

Audio amplifier