Daewoo DTH-20D5FSN Bedienungsanleitung
ColourTelevision
CHASSIS : CM-220N
Model : DTH-20D5FSN
DTH-21D4FSN
S/M No. : TCM220NEF0
Service Manual
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr May.2001
SPECIFICATIONS
DTH-20D5FSN DTH-21D4FSN
MODEL
ITEM
TV STANDARD PAL-M/N
POWER INPUT 220V 50/60HZ
POWER CONSUMPTION 88W
TUNING SYSTEM Frequency Synthesizer (FS)Tuning System
TV VHF(L) : CH2 ~ CH6
UHF(H) : CH7 ~ CH13
UHF : CH14 ~ CH69
CATV VHF(L) : 5A,A,B,A-5-A-1
TUNING RANGES CH2-CH6
VHF(H) : C-W+11
CH7-CH13
UHF : W+12-W+84
SOUND OUTPUT 5W + 5W
SPEAKER 8 ohm 5W X 2EA
ANTENNA INPUT IMPEDANCE 75 ohm Unbalanced
Font :Video, Audio, Earphone
Rear:Video, Audio,(R,L)
Picture IF Carrier Frequency : 45.75 MHZ
INTERMEDIATE FREQUENCIES Sound IF Carrier Frequency :41.25 MHZ
Color Sub-Carrer Frequency :3.579545 MHZ
REMOTE CONTROL R-43A01
1) ICON MENUTYPE
2) 3-Language OSD
3) WITH CAPTION
4) CH LABEL
DTH-20D5FSN DTH-21D4FSN
SPECIAL FUNCTIONS
AUXILIARY INPUT TERMINAL
SPECIFICATIONS..................................................................................................................................... 2
CIRCUITBLOCKKIAGRAM .................................................................................................................... 3
ALIGNMENTINSTRUCTION.................................................................................................................... 4
YourRemoteControl ..........................................................................................................................................4
Service Mode Adjustment...................................................................................................................................5
Assembly Adjustment .........................................................................................................................................6
SCHEMATICDIAGRAM ........................................................................................................................... 10
PRINTEDCIRCUITBOARD ..................................................................................................................... 11
EXPLODEDVIEW..................................................................................................................................... 12
SERVICEPARTSLIST ............................................................................................................................. 14
APPENDIX (“Appendix is provided only by internet [http://svc.dwe.co.kr]”)
TROUBLESHOOTINGGUIDE................................................................................................................. 34
1
. No Power......................................................................................................................................................34
2. No Picture .....................................................................................................................................................35
3. No Sound......................................................................................................................................................36
4. CH Don’t Stop...............................................................................................................................................37
5. No Color........................................................................................................................................................38
6.NoVertical Deflection....................................................................................................................................38
7. No On-Screen Display ..................................................................................................................................39
8.RemoteControlDoesNot Operate................................................................................................................39
TABLE OF CONTENTS
1
2
SPECIFICATIONS
CAUTION
CM-220N
MODEL
ITEM
TV STANDARD PAL-M/N
POWER INPUT 220V 50/60HZ
POWER CONSUMPTION 88W
TUNING SYSTEM Frequency Synthesizer (FS)Tuning System
TV VHF(L) : CH2 ~ CH6
UHF(H) : CH7 ~ CH13
UHF : CH14 ~ CH69
CATV VHF(L) : 5A,A,B,A-5-A-1
TUNING RANGES CH2-CH6
VHF(H) : C-W+11
CH7-CH13
UHF : W+12-W+84
SOUND OUTPUT 5W + 5W
SPEAKER 8 ohm 5W X 2EA
ANTENNA INPUT IMPEDANCE 75ohmUnbalanced
Font :Video, Audio, Earphone
Rear:Video, Audio,(R,L)
Picture IF Carrier Frequency : 45.75 MHZ
INTERMEDIATE FREQUENCIES Sound IF Carrier Frequency :41.25 MHZ
Color Sub-Carrer Frequency :3.579545 MHZ
REMOTE CONTROL R-43A01
1) ICON MENUTYPE
2) 3-Language OSD
3)WITH CAPTION
4) CH LABEL
DTH-20D5FSN DTH-21D4FSN
SPECIAL FUNCTIONS
AUXILIARY INPUT TERMINAL
CIRCUIT BLOCK DIAGRAM
3
4
Your Remote Control
ALIGNMENT INSTRUCTION
CAUTION
1. POWER
Use this button to turn yourTV on or off.
2. MUTE
Use to turn theTV’s sound on and off.
3. CH
Use these buttons to change yourTV’s volume, to
activate selections in the menu system.
4. VOL
Use these buttons to change yourTV’s volume, to
activate selections in the meny system,or to change
audio and video settings.
5. MENU
Use this button to turn theTV’s menu system on and off.
6. DISPLAY
Use this button to display the channel numbeer and
status.
7. INPUT
Use this button to select theTV’s signal source.
8.VIDEO
Use this button to display video adjustment.
9. 0-9
Use these buttons to change channels.
10. SLEEP
Use this button to program theTV to turn off after a
certain time.
11.PREVIOUS
Use this button to return to the previous channel you
werewatching.
5
Table-A :Adjust the values of service mode when a part is replaced.
ADJUSTMENT
NECESSARY UNNECESSARY
I701 Data is stored in I703
(U-COM)
I101
(MAIN) Initial setting values are written from I701.
Adjustingltems
S5 RFAGCD
S6 H.PHASE/V.POSI/V.SIZE
S8 RD/BD/RB/GB/BB
S9 Subbrightness
CRT Adjust items related to picture tube only. (White Balance adjustment)
ALIGNMENT INSTRUCTIONS
SERVICE MODE ADJUSTMENTS
Follow the steps below whenever service adjustment is required.SeeTable- A andTable- B to determine if
serviceadjustments are required.
1) How to enter the service mode using the user remote control.
•Turn the set on.
• Direct the remote control to the reception window ofTV.
• Push buttons of remote control in sequence as follows.
1 MUTE DISPLAY MUTE
•Then, the screen will appear as follows.
• Using the channel up or channel down button, select the item you wish to adjust.
(The color of selected item turns into the red.)
• Press the volume up or down button to enter in the service mode you wish to adjust.
2) How to memorize the adjusted values in the service mode.
• Must press DISPL AY button the state which the screen is displaying each of service menus
after all adjustments are completed each of all service menu.
PART
REPLACED NOTES
I703
(EEPROM)
6
ALIGNMENT INSTRUCTIONS
Table-B DATA
INITIAL RANGE
S2 ScreenAdjustment - -
Auto RF AGC - -
VideoLevel(VIDEOL) 7 0~7 Must be set to 7
RF AGC Delay (RFAGCD) *0~63 Align RF AGC threshold
FM Level (FM.LEV) 8 0~31 Must be set to 20
AGC Point 3.75 - Select AGC reference voltage
A/DVALUE - -
HorizontalPhase(H.PHASE) *0~31 Align sync to flyback pulse, using internal cross pattern(S7)
Vertical Position (V.POSI) *0~63 Align vertical DC bias, using internal cross pattern(S7)
Vertical Size (V.SIZE) *0~127 Align vertical amplitude, using internal cross pattern(S7)
NO SD POWER OFF YES - Automatically turn off in 15min for no received signal.
Vertical S-Correction (V SC) 0 0~31 Must be set to 6
Vertical Linearity (V LIN) 20 0~31 Must be set to 16
InternalBlack - - Display internalBLACKpattern
Internal100%White - - Display internal100%WHITE
Internal 60%White - - Display internal 60%WHITE
InternalCross Pattern - - Display internalCROSSpattern
Red Drive (RD) *0~127 Align RED OUT Ievel
Green Drive (GD) 10 0~15 Must be set to 10
Blue Drive (BD) *0~127 Align BLUE OUT AC level
Red Bias (RB) *0~255 Align RED OUT DC Ievel
Green Bias (GB) *0~255 Align GREEN OUT DC Ievel
Blue Bias (BB) *0~255 Align BLUE OUT DC Ievel
Subbrightness *0~127 Align common RGB DC level
Contrast 10 0~27
Tint 27 0~27
Color 15 0~27
S12 ForwardingMode - FactoryInitialization
MODE ADJUSTMENT ITEMS REMARKS
S5
S6
S7
S8
S9
* indicates the items with different settings each of sets
ASSEMBLY ADJUSTMENTS
1) SCREEN ADJUSTMENT (S2)
Enter the service mode and select service adjustment S2.
You cna see the one horizontal line on the screen.
Adjust the Screen ControlVolume (located on FBT) so that the horizontal line onscreen may be
disappeared.
Press the volume up or down button to exit in the screen adjustment mode.
NOTE
IN THE SCREEN ADJUSTMENT MODE, DONT PRESS OTHER BUTTONS EXCEPT VOLUME UP OR DOWN BUTTON.
7
ALIGNMENT INSTRUCTIONS
2) FOCUS ADJUSTMENT
•Turn in a local station and adjust the Focus Control knob (located on FBT) for best picture
details at high light condition.
3) RF AGC DELAY ADJUSTMENT (S5)
• Receive a good local channel.
• Enter the service mode and select service adjustment S5.
•You can see the OSD as shown in below.
• Select RFAGCD item, press the volume up or down button until noise or beat in picture disappears.
• Press the DISPLAY button to memorize the data.
4) GEOMETRIC ADJUSTMENTS (S6)
• Enter the service mode and select service adjustment S7.
•Whenever you select the“S7”using the volume up or down button, the screen is changing like this.
NORMAL BLACK WHITE100 WHITE60 CROSS
• Using the volume up or down button, select internal cross pattern.
• Select service adjustment S6.
•You can see the OSD as shown in below.
4-1.Horizontal Position Adjustment
• Select H.PHASE item, adjust H.PHASE data value to obtain proper horizontal centering of the
internal cross pattern at the left and right of the screen.
4-2.Vertical Position Adjustment
• SelectV.POSI item, adjustV.POSI data value to center the raster properly on the screen.
8
ALIGNMENT INSTRUCTIONS
4-3.Vertical Size Adjustment
Select “V.SIZE” item, adjust “V.SIZE”data value to proper vertical size as follows.
5) WHITE BALANCE ADJUSTMENT (S8)
Receive a good local channel.
Enter the service mode and select service adjustment S8.
You can see the OSD as shown in below.
Using volume up or volume down, adjust service adjustment data of RD/GD/BD and RB/GB/BB until a good gray
scale with normal whites is obtained.ALIGNMENT INSTRUCTIONS
Press the DISPLAY button to memorize the data.
6) DIGITAL PRESET(D.P) ADJUSTMENTS (S9)
SUBBRIGHTNESS ADJUSTMENT
Receive a good local channel.
Enter the service mode and select service adjustment S9.
You can see the OSD as shoown in below.
9
ALIGNMENT INSTRUCTIONS
Select Subbrightness item, adjust Subbrightness data value to obtain normal brightness level.
Press the DISPLAY button to memorize the data.
CONTRAST
Fixed value = 10
TINT
Fixed value = 27
COLOR
Fixed value = 15
7) FACTORY OUTGOING MODE (S12 : FACT)
If you select the S12, then the set becomes factory outgoing status.
You can see the OSD“outgoing OK”
Dieses Handbuch passt für folgende Modelle
1
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