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Check the serial ID number of the product requested for repair before starting the problem 
analysis and repair.   

Structure of serial ID number is shown below.   

(1) Checking serial ID number of PDP module (14 digits)   

The serial ID number of the product that is brought in for service and that of the 
completed panel chassis has the structure as shown below. 

The serial ID number is shown on the bar code label that is attached to the rear of the 
chassis (aluminum).   

        N7A  1  01   001A1    01A 

                                                                                        Version No.:    01 ~ 99 
                                                         A ~ Z (excluding I and O) 

                                                Lot No.:  001 ~ 999 
                                                         A ~ Z (excluding I and O) 
                                                                                                                  1 ~ 3 

                                    Production week code:  01 ~ 53 

                                 Production year (low digit):  0 ~ 9 

                                            Product code:  N7A- model 42 type 

                   

Module product label                   Serial ID label of panel chassis 

 

 

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(2) Checking serial ID number of constituent PC boards (12 digits)   

The serial ID number of the module constituent PC boards has the following structure.   

The serial ID number is shown on the bar code label that is attached to each PC board. 
 

        Cs  1  01  00001  1A 

                                                                                          Version No.:    1 ~ 9 , a~z   
                                                          A ~ Z  (excluding I and O) 

                                                 Lot No.:  00001 ~ Z9999 

                                    Production week code:  01 ~ 53 

                                 Production year (low digit):  0 ~ 9 

                                            Product code:   

 

 

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(1) Prepare the test equipment and the module requested for repair. 

(2) Affix to the stand (jig) the module requested for repair. 

(3) Connect LOGIC board connector CN1 of the module to the Interface 

board (jig)CN5 with the dedicated signal cable. 

(5) Turn on the AC power to the interface board (jig). 

(7) Set the PDP go switch on the Interface board (jig) to ON.   

(The main power of the module is turned on.) 

(6)  Select the signal used when a problem occurs, or an all white pattern. 

(4) Connect the AC power cable to CN61 on the PSU board of the module 

requested for repair. 

 

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1 

After momentarily going on, the 
screen becomes black 
immediately or after a few 
seconds. (Main power is turned 
off.)  

 

 

 

 

X-SUS 
Y-SUS 
PSU 
Panel chassis 
LOGIC 
ABUSL 
ABUSR 

Refer to Chapter 
4.6.1 

2 

Entire 
screen does 
not light.   

Screen lights dimly even on the 
back screen.   

 

 

 

LOGIC Replace 

LOGIC 

board 

3 

Single vertical line (of different 
color)  

 

 

 

 

Panel chassis 
LOGIC 

Refer to Chapter 
4.6.2 

4 

Vertical line 

Vertical line from the middle of 
effective scan area (Vertical line 
of different color) 

 

 

 

 

Panel chassis 

Replace panel 
chassis 

 

5 

Bar width of 1/7 of horizontal size 
or in multiples of 1/7, is 
displayed. Abnormal display.   

 

 

 

 

Panel chassis 
ABUSL 
ABUSR 
LOGIC 
Above boards 
are connected

. 

Refer to Chapter 
4.6.2 

6 

Vertical bar 

Bar width of 3/7 or 4/7 of the 
screen width, is displayed. 
Abnormal display. (Vertical line of 
different color) 

 

 

 

 

ABUSL 
ABUSR 
LOGIC 
Above boards 
are connected. 

Refer to Chapter 
4.6.2 

7 

Single horizontal line (No light) or 
single horizontal line does not 
light among the effective 
scanning area.   

Single horizontal line does not 
light. 

 

 

 

 

Panel chassis 

Replace panel 
chassis 

8 

Horizontal 
line 

Every other line(No light) 

Entire screen 

 X-SUS 

Y-SUS 

Replace 

X-SUS 
Y-SUS 
Board