Friday, November 13, 2015

SAMSUNG - LA32A330J1X SAMSUNG - LA40A330J1X SERVICE MODE AND TROUBLE SHOOTING

SAMSUNG - LA32A330J1X SAMSUNG - LA40A330J1

SERVICE MODE AND TROUBLE SHOOTING 

TROUBLESHOOTING
Check the various cable connections first.
# Check to see if there is a burnt or damaged cable.
# Check to see if there is a disconnected or loose cable connection.
# Check to see if the cables are connected according to the connection diagram.
Check the power input to the Main Board.
NO POWER 
SYMPTOM
The LEDs on the front panel do not work when connecting the power cord.
The SMPS relay does not work when connecting the power cord.
The units appears to be dead.
CHECK POINTS
The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are
improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
Check the internal cable connection status inside the unit.
Check the fuses of each part.
Check the output voltage of SMPS.
Replace the Main Board.
Does proper DC 13V appear at pin20 of CN1001? > Change a Assy PCB Power.
Does proper DC A3.3V appear at C1040? > Check a IC1011 Change a main PCB ass’y
Does proper DC 5V, 3.3V, 1.2V appear at C1005, C1038, C1063? > Check a IC1006, IC1012. Change a main PCB ass’y
No Video (Analog PC signal)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the PC source
Check the M-star
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check a PC source and check the connection of DSUB cable? > PC cable. Change a PC cable. Change a main PCB ass’y.
Does the digital data appear at the output of LVDS (R6048~6045_FBE)? > Check a IC6001. Change a main PCB ass’y
Check a LVDS cable? Replace a lcd panel?
No Video (HDMI - Digital Signal)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the HDMI source
Check the M-star
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected
Does the digital data appear at R5055~5062,R5066~5073? > Check a IC1402. Change a main PCB ass’y.
Does the digital data appear at output of IC5001(R6048~6045_FBE)? > Check a IC1401. Change a main PCB ass’y.
Check the LVDS cable? Replace the LCD panel?
No Video (Tuner_CVBS)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the Tuner CVBS source
Check the M-star
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Does the signal appear at R3235? > Check a B+ voltage (#7of Tuner) 5V, change a main PCB ass’y.
Does the signal appear at C5068 of IC5001? > Change a main PCB ass’y.
Check the LVDS cable? Replace the LCD panel?
NO AUDIO 
SYMPTOM
Video is normal but no Audio
CHECK POINTS
Does the signal appear at pin 232, 236, 234,237(I2S_CLK, I2S_SCLK, I2S_ LRCLK, I2S_DATA) of IC1201? > Check a connection harness and headphone jack./Side AV Check Sound Processor IC5001 (M-star)
Check the DC 12V of IC2001? > Check a B12V Line. Change a main PCB ass’y
Does the signal appear at Pin 47 or 48, 53 or 54(CH1_L, R Sound) And Pin 36 or 37, 30 or 31 (CH2_L, R Sound) of IC2001? > Change a main PCB ass’y.
Replace the speaker ass’y?
SERVICE MODE
To enter ‘Service Mode’ Press the remote -control keys in this sequence :
# If you do not have Factory remote - control
INFO > MENU > MUTE > Power on
# If you have Factory remote - control
PICTURE ON > DISPLAY > FACTORY
# The buttons are active in the service mode.
1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left Arrow Right, Menu, Enter, Number Key(0>9)
2. Function - Control Key : Power, CH +, CH -, VOL +, VOL -, Menu, TV/VIDEO(Enter)
Panel Check
You have to check Panel Maker Because of different adjustments as follows.
First of all, Check the label rating!
1) Label Rating File
# LCD PANEL MARK
A:ACER(AUO) S : SEC C : CMO
# If not printed you could consider S(sec) panel mark.
Calibration AV
1) Apply the NTSC Lattice (N0. 3) pattern signal to the AV IN 1 port
2) Press the Source key to switch to “AV1” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “AV Calibration” menu.
6) In “AV Calibration Off” status, press the “> ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “AV Calibration” status from Failure to Success.
Calibration Component
1) Apply the 720p Lattice (N0. 6) pattern signal to the Component IN 1 port
2) Press the Source key to switch to “Component1” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “Comp Calibration” menu.
6) In “Comp Calibration Off” status, press the “> ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “Comp Calibration” status from Failure to Success.
Calibration PC
1) Apply the VESA XGA Lattice (N0. 21) pattern signal to the PC IN port
2) Press the Source key to switch to “PC” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “PC Calibration” menu.
6) In “PC Calibration Off” status, press the “> ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “PC Calibration” status from Failure to Success.
Calibration HDMI
1) Apply the 720p Lattice (N0. 6) pattern signal to the HDMI1/DVI IN port
2) Press the Source key to switch to “HDMI1” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “HDMI Calibration” menu.
6) In “HDMI Calibration Off” status, press the “ ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “HDMI Calibration” status from Failure to Success.
White Ratio (Balance) Adjustment
1.You can adjust the white ratio in factory mode (1:Calibration, 3:White-Balance).
3.Since the adjustment value and the data value vary depending on the input source, you have to adjust these in CVBS, Component 1 and HDMI 1 modes.
4.The optimal values for each mode are configured by default. (Refer to Table 1, 2) It varies with Panel’s size and Specification.
# Equipment : CS-210
# Pattern: MIK K-7256 #92 “Flat W/B Pattern” as standard
# Use other equipment only after comparing the result with that of the Master equipment
HDMI : Time #6 720P, Pattern #24 Chessboard > Calibration Manual adjustment #92 pattern (720p)
COMP: Time #6 720P, Pattern #24 Chessboard > Calibration Manual adjustment at #92 pattern (720p)
CVBS: Time #2 PAL, Pattern #24 Chessboard > Calibration Manual adjustment at #92 pattern (NTSC)
PC: Time #21 1024*768, Pattern #24 Chessboard > Calibration Manual adjustment at #92 pattern (NTSC)
How to Initialize.
Click “1. Option Table(Service)” > “Factory Reset” in Factory Menu. You can make every setting in Factory Initial Status.
INNER WRING DIGRAM 
CLICK ON THE IMAGE TO ZOOM IN