Samsung CL-21M40MQ User manual

COLOR TELEVISION
Chassis : KS9C(N)MI
Model : CL21M40MQGXXAO
COLOR TELEVISION FEATURES
■Turbo Sound
■■Sound Equalizer
■New Structure Design
SERVICE Manual
CL-21M40MQ

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. Sep. 2006
Printed in Korea
AA82-03964A

Table of Contents
Chapter 1 Precaution
■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
Chapter 2 Product Specification
■2-1 Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
■2-2 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
■2-3 Specifications Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
■2-4 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Chapter 3 Alignment & Adjustment
■3-1 Service Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
■3-2 How to Access Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
■3-3 Factory Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
■3-4 Service Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
■3-5 Replacements & Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Chapter 4 Exploded View & Part List
■4-1 CL21M40MQGXXAO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Chapter 5 Electrical Part List
■5-1 CL21M40MQGXXAO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Chapter 6 Troubleshooting
■6-1 Checkpoints by Error Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
■6-2 Troubleshooting Procedures by Error Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
■6-3 Troubleshooting Procedures by ASS'Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
■6-4 Troubleshooting by Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Chapter 7 Block Diagram
■7-1 Overall Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
■7-2 Partial Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Chapter 8 Wiring Diagram
■8-1 Overall Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
■8-2 Pin Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Chapter 9 PCB Diagram
■9-1 Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
■9-2 CRT Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Chapter 10 Schematic Diagram
■10-1 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
■10-2 Micom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
■10-3 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
■10-4 Side A/V & CRT Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4

Alignment & Adjustment
Samsung Electronics 3-1
3. Alignment & Adjustment
3-1 Service Instruction
1. General Adjustment :
In general, a color TV can provide ideal visual quality by adjusting the basic settings such as the vertical size, horizontal size,
focus, etc.
Display a black and white picture on the screen to check if the picture is clearly displayed.
If there are some 'spotted' points on the screen when displaying a black and white picture, degauss the screen using the
degauss coil. If the spotted points remain, re-adjust the purity and the convergence. This completes the basic performance
examination.
Notice.
■These adjustments and the check list are only applied to KS9C chassis-applied models.
■use 110v for the measurement set. It is recommended using an
insulation transformer when supplying power to the set so as to prevent shock to the set or to yourself.
■These adjustment specifications have been created on the basis of the domestic KS9C chassis-applied remote
control model. Some of the contents may be changed subject to the sales location and the product specifications.
2. When replacing the Main Board :
Focus adjustment, screen voltage setting and W/B adjustment are all required.
3. When replacing the CRT Ass'y : No adjustments required.

Alignment & Adjustment
3-2 Samsung Electronics
3-2 How to Access Service Mode
MENU Show all menus
▲/ ▼Move the cursor to select an item.
◀/ ▶Adjust the selected configuration value
1. To enter Service Mode, press the keys on the remote control according to the following sequence. (in Stand-by status)
Info →Menu →MUTE→power On
※When failing to enter Service Mode, repeat the procedure above.
2. The initial screen of Service Mode.
3. Functions of the Keys within Service Mode
ADJUST
OPTION
G2-ADJUST
CHCKSUM
RESET
T-FMTNUS

Alignment & Adjustment
Samsung Electronics 3-3
3-3 Factory Data ★The underlined are items applied during the service adjustment. None of the others should be adjusted.
1.T-FMTNUS
No Item Adjust/Fix Initial Remark
1HS Adjust 37
2VA Adjust 34
3VSL Adjust 30
4 VS FIX 31
5 AGC Adjust 33
6 CDL FIX 9
7SCT Adjust 10
8SBT Adjust 7
9BLR Adjust 28
10 BLB Adjust 43
11 RG Adjust 30
12 GG FIX 32
13 BG Adjust 46
14 SC FIX 29
15 STT FIX 29
16 AKB FIX 0
17 NDL FIX 1
18 NSR FIX 5
19 VOL FIX 10
20 MVOL FIX 7
21 RPO0 FIX 1
22 RPO1 FIX 1
23 CAP FIX 12
24 FMWS FIX 0
25 AGCS FIX 1
26 OMD FIX 15
27 SCL FIX 3
28 PWL FIX 13
29 MUS FIX 1
30 SCBT FIX 40
31 SSP FIX 5
32 DNSR FIX 17
33 DSBT FIX 0
34 DCDL FIX 6
35 DBLR FIX 32
36 DBLB FIX 32
37 DSK FIX 0

Alignment & Adjustment
3-4 Samsung Electronics
2.Option
3.White Balance
No Item Initial 21"FLAT Remark
1Video Mute Off Off Video Mute time between the Channel
changes
2 Audio STEREO STEREO Audio MONO/STEREO Option
32ND SIF EXTERNAL EXYERNAL SIF Option
4Auto Power Off Off Turns on automatically when the Master
Power is turned ON
5Audio Mute On On Mutes the Audio when the there is no
source signal
6Start Language English English Preset OSD (On-Screen Display) laguage
at time of purchase
7Hotel Mode Off Off
8Blue Screen On On Blue Screen when there is no source signal
9 V-Chip Off Off
10 AV Option AV1/2/DVD/SV AV1/2/DVD Back Jack Option
11 AFN Off Off
No Item 21"FLAT Remark
1Hight Light 275/265/45FL
2Low Light 275/265/1.5FL

Alignment & Adjustment
Samsung Electronics 3-5

Alignment & Adjustment
3-6 Samsung Electronics
3-4 Service Adjustment
3-4-1 Adjusting the Picture Size
■Since the KS9C chassis has the deflection settings data within the Factory Data, the picture size has to be adjusted when
replacing Main Board, according to the following procedures.
①Display the Lion pattern. ②Press "Power Off →MUTE→1→8→2→Power On "
using the remote control and enter Factory Mode.
③Enter Deflection Mode. ④Adjust the VA, VS,VSL and HS items so
that the width becomes 5 and the height becomes 4.

Alignment & Adjustment
Samsung Electronics 3-7
3-4-2 Adjusting the Picture Straight Lines
①Display the Cross Hatch pattern.
②Adjust settings other than VA,VH and HS so that straight lines are displayed without curves.
④When the adjustments are complete, display the Lion pattern and check that the picture size has not been changed.
If there is no change, finish the adjustments.
③Adjust the V-Linearity and V-SC settings so that the
intervals of the horizontal lines become uniform.

Alignment & Adjustment
3-8 Samsung Electronics
3-5 Replacements & Calibration
3-5-1 Adjusting the Focus
1. Display the CROSS Hatch pattern.
2. Turn the Focus clockwise to the optimal position.
3. Slowly turn the Focus clockwise so that the cross line is the most clearly displayed.

Alignment & Adjustment
Samsung Electronics 3-9
3-5-2 Adjusting the Screen Voltage
1. Select "Power Off →MUTE→1→8→2→Power On " to enter Service Mode.
2. Turn to toshiba pattern
3. Use remocon come into " G2 Adjust" mode by hand or automatically.
4. Turn Screen VR of FBT and confirm the characters below changed to GREEN.

Alignment & Adjustment
3-10 Samsung Electronics
3-5-3 Adjusting the White Balance
1. Initialize all settings to the values appropriate to the corresponding model.
2. Select "Power Off →Mute →1 →8 →2→Power On" to enter Service Mode.
3. Initialize all settings to the values appropriate to the corresponding model.
4. Display the Toshiba pattern and adjust the White Balance using CA100 with the coordinates of the corresponding model.
5. Enter Video Adjust1 of Service Mode. Adjust Low/Light.
- Adjust Sub Bright to set Y.
- Adjust B Cutoff to set y.
- Adjust R Cutoff to set x.
6. Enter Video Adjust1 of Service Mode. Adjust High/Light.
- Adjust Sub Contrast to set Y.
- Adjust B Drive to set y.
- Adjust R Drive to set x.
7. Check Low/Light and readjust it if its value has been changed.
8. If you have readjusted Low/Light, readjust High/Light until the two values are identical to the coordinates of the corresponding
model.
※White Balance Standard Data
3-5-4 Check List for the Screen Voltage and White Balance Adjustment
1. The Screen Voltage and White Balance are connected each other, and both of them have to be configured to the correct values.
2. Adjust the White Balance after the Screen Voltage was adjusted, and check if the Screen Voltage is normal after adjusting the
White Balance.
3. If the White Balance is readjusted, check the Screen Voltage again.
4. When the adjustment is finished, check the following checklist.
- If there is a spot on the screen when turning the TV set off/on, adjust the Screen Voltage again.
- If there is a ghost line on the screen, adjust the Screen Voltage again.
No Item TSE Required Adjustment
21"SDI AK
1White Balance
High: x : 275
y : 265
Y : 45FL
Low: x : 275
y : 265
Y : 1.5FL
White Balance
(Standardization Applied)

Block Diagram
Samsung Electronics 7-1
7. Block Diagram
7-1 Overall Block Diagram

Block Diagram
7-2 Samsung Electronics
RENUT
V/A-tnorF
NI
C.O.U
&
mociM
MORPEE
LACITREV
PMA
04087AL
RTTUO-H
OIDUA
PMA
HC2×W01
TBF
W/S
SNART
CD/CA
retrevnoC
SPMS
TNOC
RELOR
2367AK
TRCF12
OEDIV
PMA
7016ADT
V521+/A
V31+/A
+BTBFoT
PMAdnuoSoT
+B
COU
COU
BGR
evirD-V
evirD-H
-
e
rP
PMA
WASFIV
W/S+
V8+/B
V5+/B
V3.3+/A
ENUT
R
KC
A
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ACR
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CIFIS&W/S-FIS
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180V
±16.5V
FI
NI-V/A
TUO-V/A
>NOITPO<
NOM
O
7-2 Partial Block Diagram
7-2-1 System Board Block Diagram

10. Schematic Diagram
Samsung Electronics
Schematic Diagram
10-1
10-1 Power
This Document can not be used without Samsung’s authorization.
TP01
TP02
TP08
TP04
Power
Signal
TP01
TP02
TP04
TP08

Schematic Diagram
10-2 Samsung Electronics
TP11TP11 TP10 TP09 TP04
TP12
TP13
10-2 Micom
Power
Signal
This Document can not be used without Samsung’s authorization.
TP04
TP09
TP10
TP11
TP12
TP13

Samsung Electronics
Schematic Diagram
10-3
10-3 Audio
Power
Signal
This Document can not be used without Samsung’s authorization.

Schematic Diagram
10-4 Samsung Electronics
10-4 Side A/V & CRT Board
Power
Signal
This Document can not be used without Samsung’s authorization.