Samsung CL21C650MLMXZD Schematic
COLOR TELEVISION
Chassis: KSCB(P)_SIX-O(CB1C)
Model : CL21C650MLMXZD
SERVICE Manual 
COLOR TELEVISION |
CONTENTS |
1. |
Precaution |
2. |
Product Specification |
3. |
Disassembly & Reassembly |
4. |
Troubleshooting |
5. |
Exploded View & Part List |
6. |
Wiring Diagram |
7. |
Schematic Diagram |
CL21C650ML
Refer to the service manual in the GSPN (see the rear cover) for the more information.
GSPN (Global Service Partner Network)
Area |
Web Site |
North America |
service.samsungportal.com |
Latin America |
latin.samsungportal.com |
CIS |
cis.samsungportal.com |
Europe |
europe.samsungportal.com |
China |
china.samsungportal.com |
Asia |
asia.samsungportal.com |
Mideast & Africa |
mea.samsungportal.com |
This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
©Samsung Electronics Co.,Ltd. Mar. 2010 Printed in Korea
AA82-06323A
Table of Contents
1. Precaution |
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1-1 |
Safety Precautions....................................................................................................................................................... |
1-1 |
1-2 |
Servicing Precautions.................................................................................................................................................. |
1-3 |
1-3 |
Static Electricity Precautions........................................................................................................................................ |
1-4 |
1-4 |
Installation Precautions................................................................................................................................................ |
1-5 |
2. Product Specification |
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2-1 |
Product Specification................................................................................................................................................... |
2-1 |
2-2 |
Specifications Analysis................................................................................................................................................. |
2-2 |
2-3 |
Accessories.................................................................................................................................................................. |
2-3 |
3. |
Disassembly & Reassembly |
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3-1 Overall Disassembly & Reassembly............................................................................................................................ |
3-1 |
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4. |
Troubleshooting |
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4-1 |
Troubleshooting............................................................................................................................................................ |
4-1 |
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4-2 |
Adjustment................................................................................................................................................................... |
4-14 |
5. |
Exploded View & Part List |
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5-1 |
CL21C650MLMXZD Exploded View............................................................................................................................ |
5-1 |
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5-2 CL21C650MLMXZD Electrical Part List....................................................................................................................... |
5-3 |
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6. |
Wiring Diagram |
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6-1 |
Overall Wiring............................................................................................................................................................... |
6-1 |
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6-2 |
Pin Connection............................................................................................................................................................. |
6-2 |
7. |
Schematic Diagram |
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7-1 |
Circuit Description........................................................................................................................................................ |
7-1 |
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7-2 |
Schematic Diagram...................................................................................................................................................... |
7-5 |
Troubleshooting
4. Troubleshooting
4-1 Troubleshooting
4-1-1 First Checklist for Troubleshooting
1.Power LED: Check that the LED works when the power cord is connected to a 90-264 wall outlet.
2.LED Indicators: See table 4-1-2 Basic Troubleshooting: LED Diagnosis on the Front Panel.
3.In case of a power failure or abnormal screen, check the following items.Check that the power cord is correctly connected to a 90-264 wall outlet.
Check that the Master Switch has been pressed.Ch eck that the transmitter is turned on.
Check that transmitter device selection is set to TV.Check that the signal cable is properly connected.Check that channel setting has been set.
Samsung Electronics |
4-1 |
Troubleshooting
4-1-2 Checkpoints by Error Mode
1. Troubleshooting Summary
Problem |
Solution |
The power does not turn on. |
Check if the power cord is properly connected. |
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Air broadcasting does not work. |
Check if the antenna is properly installed. |
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Cable broadcasting does not work. |
Subscribe to a local cable broadcasting firm and get support. |
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Satellite broadcasting does not work |
Install a satellite antenna (Parabola) and connect it to the TV. |
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2. Menu & Remote Control
Problem |
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Solution |
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■ Press the Select Device button to select the TV or external device. |
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Replace the battery of the remote control with a new one. |
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■ Insert the battery making sure the polarity (+,-) is correct. |
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■ Check if the angle or the distance is sufficient, or if there is any |
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The remote control does not work. |
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interference between the product and the remote control. |
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Make sure the user has pressed the correct button. |
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■ To avoid direct sunlight to the receiving panel of the TV, remove any |
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indoor lighting or change the location of the TV. |
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■ Check if the power switch at the back left of the TV is turned on.. |
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■ Press the Select Device button to select the TV. |
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Cannot change the channel with the remote control. |
■ |
Change the channel using the remote control of the cable or satellite |
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receiver. |
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Press the source button and check if the AV item is grayed out. When the |
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Cannot select an A/V channel. |
AV item is grayed out, you cannot select an A/V channel. Check if the |
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connector is properly connected. |
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Cannot select a menu. |
Check if the menu is grayed out. If a menu is grayed out, it cannot be |
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selected. |
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4-2 |
Samsung Electronics |
Troubleshooting
3. Screen
Problem |
Solution |
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■ Check if the power cord is properly connected. |
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The screen is black and there is no sound. |
■ Turn on the power. |
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■ Select anAV channel that corresponds to the external device. |
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Only the screen is blank/it is dark or too bright. |
Adjust the screen brightness. |
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The screen is blue/the external channel is not |
■ Check if the connector is properly installed. |
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displayed. |
■ Select anAV channel that corresponds to the external device. |
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The screen overlaps (double/triple). |
■ Check if the antenna is properly installed. |
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■ Adjust the position, angle or direction of the antenna. |
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The screen is snowy or unclear. The picture quality |
■ Check if the antenna has been bent or moved by the wind. |
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■ Check the antenna for its lifetime. |
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gets worse when it is windy |
(Normally 3 - 5 years, 1-2 years near the coast) |
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Dotted or semi-dotted lines are displayed on the |
Install the antenna as far away from the road as possible. |
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screen. |
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The screen is black and white. |
■ Adjust the color density. |
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■ Check if the connector is properly installed. |
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The colors of the screen are odd/strange. |
Adjust the color tones. |
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Unusual lines appear on the screen. |
Keep the antenna away from the power cord or connectors if possible. |
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Unusual lines appear on the screen when watching |
Keep the video player as far away from the TV as possible. |
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or recording to video. |
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4. Sound
Problem |
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Solution |
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There is no sound. |
■ |
Increase the volume. |
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Press the Mute button. |
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The sound is very low. |
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Increase the volume. |
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Set the auto volume control to ON. |
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There is a lot of noise. |
Keep the antenna away from the power cord or connectors if possible. |
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The selected language does not appear. |
Press the Multiplex button to select the TV. |
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Samsung Electronics |
4-3 |
Troubleshooting
5. Channel
Problem |
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Solution |
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■ Check if the antenna is properly installed. |
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There are no channels available. |
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Press theAuto Channel button to store channels. |
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Contact your local broadcasting service station. |
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■ Adjust the position, angle or direction of the antenna. |
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Activate the Reception Sensitivity Boost feature. |
Some channels are not available. |
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Contact your local broadcasting service station. |
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Use the number keys to select a specific channel and press Store/Clear |
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to memorize it. |
Only the UHF (14-69) channels are not available. |
Check if the antenna is able to receive UHF signals. |
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6. Others
Problem |
Solution |
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The TV makes a noise as if something is dropping |
This noise may occur when the plastic material inside the TV expands or |
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inside. |
contracts according to the seasonal temperature or humidity. This is like the |
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noise from a furniture/cabinet/sink unit, and there is no need for concern. |
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4-4 |
Samsung Electronics |
Troubleshooting
7. Basic Troubleshooting: Diagnosis of LED on the Front Panel
LED
●:Light is On:Light is Blinking ○:Light is Off
Power |
Description |
○ |
This happens when the TV have turned on or the power cord is disconnected. |
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● |
This happens when the power cord is connected. |
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○→ →● |
The LED blinks, while the unit is starting up or the unit is turning off. |
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8. Troubleshooting by the Checksum
■Diagnosis of trouble by the checksum is neither reliable nor convenient.
You can only use the checksume of the current direct-view TV to determine whether the software is corrupted or not. The Checksum value is determined according to the version of the software loaded on the set.
Therefore, you can determine whether the software has been properly downloaded, if you know the correct checksum for that version of the software.
You can check the checksum according in the following order.
Factory Mode →Checksum →Enter →Output Checksum (e.g. 0xab2b)
■Checksum Examples
T-SIXPEANM -1000.0 Checksum = XXXX
Samsung Electronics |
4-5 |
Troubleshooting
9. Flow Chart for Malfunction
Does the TV work?
Yes
Is the power cord or the master switch out of order?
Yes
Is CRT higi voltage been measured?
Yes
Is
the cable from the
Main Board th the CRTAss’y properly innected?
BRIDGE DIODE
SMPS-TR
MAIN TRANS
DY-JACK
FBT
Yes |
Is there something on |
Yes |
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the Screen. |
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No |
Check that the cables ard |
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properly connected to Main |
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Board. |
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No |
Connect the cable |
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Does the OSD menu on the screen work?
No
UOC TOP IC Replace.
OUTPUT TR Q401 |
INPUT JACK |
SOUND IC
VERTICALIC
MICOM SMD IC
EW DRIVER
TUNER
4-6 |
Samsung Electronics |
Troubleshooting
4-1-3 Troubleshooting Procedures by ASS’Y
1NO Power
- Power part of the Main Board Check.
No Picture & No Sound
Is the power cord or the master switch out of order?
Check the FUSE “FP801S” |
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Yes |
Check the “D801S” #1 |
Yes |
Check the IC801S #1 |
Yes |
Check the others part |
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W6753F |
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Change “FP801S” |
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Change “D801S” |
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Change “IC801S” |
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Complete |
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F801A
D809C
BRIDGE DIODE
FD801S
SMPS-TR
SOUND IC
Samsung Electronics |
4-7 |
Troubleshooting
2.No Sound
- when the power is normal
No sound (1st power OK)
Check the +14V line |
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Yes |
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Check FD801S |
Check D809C |
Check IC201 Pin#39.40 |
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Change IC601 |
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Change FD801S |
Change D809C |
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Complete
D809C
FD801S
MICOM SMD IC
SOUND IC
4-8 |
Samsung Electronics |
Troubleshooting
3.No Picture
- when the power is normall
No picture (1st power OK)
Check the +125V line |
Yes |
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Check the others B+ line |
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No |
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“D811” |
Yes |
T444 B+ Pin #3 |
Yes |
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Check D407 |
Yes |
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CHECK CRTASS`Y |
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open and check |
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Open and check |
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No |
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No |
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No |
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Yes |
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Change the “D811” |
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Check the “Q401” |
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Change the “Q401” |
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Change D407 |
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Complete
MAIN TRANS D811 |
FBT D407 OUTPUT |
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TR Q401 |
Samsung Electronics |
4-9 |
Troubleshooting
4-1-4 Troubleshooting by Blocks
1.Tuner Diagnosis
If there is no signal measured even though the RF signal received by the external antenna is input to the Main Board Tuner.
-Supplied Power: 5V, 8V, 33V
-RF Trouble Check: Check CVBS output
-AUDIO Trouble Check: Check SiF Signal output
B+5V B+33V |
IF |
4-10 |
Samsung Electronics |
Troubleshooting
2.External Input Diagnosis
Component inputs and one monitor output (Video, Audio) are supported. The signal is input to UOC TOP IC through the ports.
If the signal input change “and output are” to “is” not detected, check the following.
-Supplied Power: UOC TOP IC(5V, 3.3V, 8V)
-Input Problem Check: Check the connecting jacks.
VIDEO IN |
AUDIO IN |
VIDEO IN |
AUDIO IN |
Samsung Electronics |
4-11 |
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