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KE-50MR1/50MR1E/MR50M1
PANEL MODULE SERVICE MANUAL
PDP Module Name
NP50C3MF01 |
KE-50MR1 AEP Model |
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KE-50MR1 K Model |
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NP50C4MF01 |
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KE-50MR1E HK Model |
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KE-50MR1E ME Model |
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KE-MR50M1 CH Model |
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FLAT PANEL COLOR TV
Contents
1. Confirmation Common Manual P1 P20
2.Confirmation Manual P21 P44
3.Repair Manual P45 P63 4.THE PARTS INFORMATION P64 P65
PDP (NP series) Confirmation Common Manual
Ver.1
1
PDP Malfunction Phenomenon |
Malfunction
Phenomenon
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No Picture |
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Power-off |
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Alarm protection |
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When you turn-on the main power, |
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the LED light-off after few minutes. |
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Go to Page 8 |
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due to check more details. |
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Power-on |
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No Priming |
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The LED is lighting, but |
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The priming does not appear on |
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not appear pictures. |
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screen. |
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Go to Page 10 |
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due to check more details. |
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No Signal
The priming is on screen, but not appear pictures.
Go to Page 10
due to check more details.
2
PDP Malfunction Phenomenon |
Abnormal Screen 
Abnormal Color
No lighting sell are on screen at white pattern.
Go to Page 11
due to check more details.
Abnormal Block
Colorful blocks appear on screen at color bar pattern.
Go to Page 11
due to check more details.
3
PDP Malfunction Phenomenon |
Vertical 
Vertical Line 
Single Line
Two Lines
Many Lines
Only one line is always lighting.
Go to Page 12
due to check more details.
two lines are lighting.
Go to Page 13
due to check more details.
Many lines are lighting.
Go to Page 14
due to check more details.
4
PDP Malfunction Phenomenon |
Vertical 
Vertical Block 
One Black Block
One block is always nolighting by one IC.
Go to Page 15
due to check more details.
One Zebra Block
Zebra block appears by one IC.
Go to Page 16
due to check more details.
Many Black Blocks
Many block appear by one data relay board.
Go to Page 16
due to check more details.
5
PDP Malfunction Phenomenon |
Horizontal 
Horizontal Line 
One Black Block
One black line appears on screen.
Go to Page 17
due to check more details.
Two Lines
Two lines appear on screen.
Go to Page 18
due to check more details.
Horizontal Block
Half block does not go out.
Go to Page 19
due to check more details.
6
PDP Malfunction Phenomenon |
Screen Defect 
Lighting strip
Check our specification .
Black strip
Check our specification .
7
No Picture |
Alarm
Protection
Panel Alarm 
FPC Opened
Panel alarm line go through the edge of the FPC.
CHECK POINT
FPC cutting at scan side and TCP side.
Panel Grid Opened
Panel alarm line go through the edge of panel.
This case is caused by sulfur issue.
CHECK POINT
Panel Grid condition.
REWORK
We can not rework this.
REWORK
We can not rework this.
Vs Protection 
High Voltage Circuit Broken
Next parts will be broken, Scan
Board, Common Board, High Voltage
Board, Scan Relay Board.
CHECK POINT
Fuse on boards, Power HIC, Between NEGA and POSI on scan relay board
REWORK
Change the Scan, Common board and Scan relay board.
8
No Picture |
Alarm
Protection
Vd Protection 
TCP Broken
In case of shortage between Vd line and GND in TCP, Vd protection will be worked.
CHECK POINT
Shortage between Vd line and GND,
TCP surface
Data Relay Board Broken
In case of shortage between Vd line and GND in data relay board, Vd protection will be worked.
CHECK POINT
Shortage between Vd line and GND on data relay board.
REWORK
We can not rework this.
REWORK
Change the data relay board.
5V Protection 
Digital Board Broken
In case of no supply from supply board, 5V protection will be worked.
CHECK POINT
Fuse on digital board
REWORK
Change the digital board.
9
No Picture |
No Priming
No Signal
High Voltage Circuit Broken
Next parts will be broken, Vp or Vbw line on Scan Board, Vsw line on Common Board, (High Voltage Board).
CHECK POINT
Fuse on board, Vp, Vbw and Vsw line of Power HIC.
Digital Board Broken
Digital is not working.
CHECK POINT
fuse on digital board, LVDS cable
Vacuum Tube Cracking
With big noise.
CHECK POINT
Vacuum tube
REWORK
Change the scan or common board (High voltage board).
REWORK
Change the digital board.
REWORK
We can not rework this.
10
No Picture |
Abnormal
screen
High Voltage Circuit Broken
Next parts will be broken, Vbw line
on Scan Board, Vsw line on
Common Board, (High Voltage
Board).
CHECK POINT
fuse on board, Vbw or Vsw line on board.
REWORK
Change the scan or common board (High voltage board).
11
Vertical |
The output of TCP
Single Line 
Data Grid Open
The output of TCP is fixed at low level or high level.
This line is very clear and constant.
CHECK POINT
One line is no-lighting or lighting at any pure color signal (red, green blue and black)
Damaged data grid in panel
EX) Sulfur, scratch
CHECK POINT
The surface condition of panel grid.
REWORK
We can not rework this.
REWORK
We can not rework this.
12
Vertical |
The output of TCP
Two Lines 
The closed outputs of TCP are Shortage.
CHECK POINT
Two lines are lighting at two colors.
Data Grid Shortage
The grids of panel are shortage due to foreign material.
CHECK POINT
The surface condition of panel grid.
REWORK
We can not rework this.
REWORK
We can not rework this.
13
Vertical |
Many Lines 
Data Grid Open
Damaged data grid in panel
EX) Sulfur, scratch
CHECK POINT
The surface condition of panel grid.
REWORK
We can not rework this.
14
Vertical |
TCP Broken
Black Block 
Data Relay Board
TCP is not working.
CHECK POINT
The surface of TCP is damaged.
The buffer IC is not working on signal lines.
The connector on data relay board is opened by the cracking of solder.
CHECK POINT
Input signal condition.
REWORK
We can not rework this.
REWORK
Change the data relay board.
15
Vertical |
Zebra Block 
Data Relay Board
The lead of the buffer IC or the connector on data relay board are shortage by foreign material.
CHECK POINT |
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REWORK |
Input signal condition. |
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Change the data relay board. |
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Many Blocks 
Data Relay Board
The lead of the buffer IC or the connector on data relay board are shortage by foreign material.
CHECK POINT
Input signal condition.
REWORK
Change the data relay board.
16
Horizontal |
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The output of Scan IC |
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The output of scan IC is fixed at low |
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level or high level. |
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This line is very clear and constant. |
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Single Line |
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CHECK POINT |
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One line is no-lighting or lighting at |
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white signal. |
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Scan Relay Board
Mis-contact between FPC and the connector of scan relay board.
CHECK POINT
The output of scan IC.
Reconnection.
REWORK
Change the scan relay board.
REWORK
Reconnect the FPC.
17
Horizontal |
Two Lines 
Scan Relay Board
The output of scan IC are shortage.
This line is not clear and not constant.
CHECK POINT
FPC insert shifting.
Foreign material in connector.
The lead of scan IC.
REWORK
Clean in the connector. Reconnect the FPC.
Change the scan relay board.
18
Horizontal |
Scan IC broken
Block 
Scan Board
Scan IC is not working.
CHECK POINT
The surface of scan IC.
The output of scan board is not working.
CHECK POINT
The output of Scan Board.
REWORK
Change the scan relay board.
REWORK
Change the scan board.
19
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