Front : Video, Audio, Earphone
Rear: Video, Audio, (R,L)
Picture IF Carrier Frequency : 45.75 MHZ
Sound IF Carrier Frequency : 41.25 MHZ
Color Sub-Carrer Frequency : 3.579545 MHZ
AV only PIP
ICON MENU TYPE
STEREO / SAP
3 - Language OSD
with Caption
220V 60HZ
ICON MENU TYPE
STEREO / SAP
3 - Language OSD
with Caption
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr
Apr. 2002
Page 2
✔
Caution
: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).
5. No Color ..................................................................................................................................... 15
6. No Vertical Deflection ................................................................................................................. 15
7. No On-Screen Display ................................................................................................................ 16
8. Remote Control Does not Operate ............................................................................................. 16
1
Page 3
SAFETY INSTRUCTION
WARNING :
X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high
voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 22-23 kV (14”) or
24-26 kV (20” - 21”) at max beam current. The high voltage must not, under any circumstances, exceed 27.5 kV (14”,
20”), 29KV (21”). Each time a receiver requires servicing, the high voltage should be checked. It is important to use an
accurate and reliable high voltage meter.
2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued X-RAY RADIATION
protection, the replacement tube must be exactly the same type tube as specified in the parts list.
SAFETY PRECAUTION
1. Potentials of high voltage are present when this receiver is operating. Operation of the receiver outside the cabinet or
with the back cover removed involves a shock hazard from the receiver.
1)Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when
working on high voltage equipment.
2)Discharge the high potential of the picture tube before handling the tube. The picture tube is highly evacuated and if
broken, glass fragments will be violently expelled.
2. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts List.
3. When replacing a high wattage resistor (oxide metal film resistor) in circuit board, keep the resistor body 10 mm away
from the circuit board.
4. Keep wires away from high voltage or high temperature components.
5. This receiver must operate under AC 230 volts, 5O Hz. NEVER connect to a DC supply of any other voltage or
frequency.
Only competent service personnel may carry out work involving the testing or repair of this equipment
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this equipment have special safety-related characteristics. These characteristics are
often passed unnoticed by a visual inspection and the X-RAY RADIATION protection afforded by them cannot necessarily be
obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual and its supplements, electrical components having such features are
identified by designated symbol on the parts list. Before replacing any of these components, read the parts list in this manual
carefully. The use of substitutes replacement parts which do not have the same safety characteristics as specified in the parts
list may create X-RAY Radiation.
2
Page 4
SPECIFICATIONS
CN-220N Chassis (Stereo Model)
MODEL
ITEM
TV STANDARD NTSC-M
POWER INPUT 120V 50 / 60HZ220V 50 / 60HZ 220V 50 / 60HZ
POWER CONSUMPTION 84W
TUNING SYSTEM Frequency Synthesizer (FS) Tuning System
CRTOAdjust items related to picture tube only.(White Balance adjustment)
7
Page 9
ALIGNMENT INSTRUCTIONS
Table-B
MODEADJUSTMENT ITEMS
S2Screen Adjustment- -
Auto RF AGC- Video Level (VIDEOL)70 ~ 7 Must be set to 7
RF AGC Delay (RFAGCD)*0 ~ 63Align RF AGC threshold
S5
S6
S7
S8
S9
S12Forwarding Mode-Factory Initialization
FM Level (FM.LEV)15(20)0 ~ 31Must be set to 15(Mono), 20(ST)
AGC Point3.75-Select AGC reference voltage
A/D VALUE- Horizontal Phase(H.PHASE)*0 ~ 31Align sync to flyback pulse, using internal cross pattern(S7)
Vertical Position (V.POSI)*0 ~ 63Align vertical DC bias, using internal cross pattern(S7)
Vertical Size (V.SIZE)*0 ~ 127Align vertical amplitude, using internal cross pattern(S7)
NO SD POWER OFFYES-Automatically turn off in 15min for no received signal.
Vertical S-Correction (V SC)00 ~ 31Must be set to 6
Vertical Linearity (V LIN)
Internal Black - -Display internal BLACK pattern
Internal 100% White
Internal 60% White
Internal Cross Pattern- -Display internal CROSS pattern
Red Drive (RD)*0 ~ 127Align RED OUT AC level
Green Drive (GD)
Blue Drive (BD)*0 ~ 127Align BLUE OUT AC level
Red Bias (RB)
Green Bias (GB)*0 ~ 255Align GREEN OUT DC level
Blue Bias (BB)*0 ~ 255Align BLUE OUT DC level
Subbrightness*0 ~ 127Align common RGB DC level
Contrast100 ~ 27
Tint270 ~ 27
Color150 ~ 27
DATA
INITIAL RANGE
200 ~ 31Must be set to 16
- -Display internal 100% WHITE
- -Display internal 60% WHITE
100 ~ 15Must be set to 10
*0 ~ 255Align RED OUT DC level
REMARKS
*
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 can see the one horizontal line on the screen.
·
Adjust the Screen Control Volume (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.
8
Page 10
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.
IFCONTROL
AUTORFAGCSTART
VIDEOL7
RFAGCD10
FM.LEV15
AGC POINT3.75
A/D VALUE : 8DH
MOVE ADJUST RECALL : SET
ALIGNMENT INSTRUCTIONS
·
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.
GEOMETRY
H. PHASE20
V. POSI29
V. SIZE70
NO SD POWER OFF YES
V SC0
V LIN20
MOVE ADJUST RECALL : SET
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
·
Select V.POSI item, adjust V.POSI data value to center the raster properly on thescreen.
9
Page 11
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.
RD58
GD10
BD65
RB105
GB160
BB100
MOVE ADJUST RECALL : SET
·
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.
D.P.
SUB BRIGHTNESS64
CONTRAST10
TINT 27
COLOR15
MOVE ADJUST RECALL : SET
10
Page 12
·
Select Subbrightness item, adjust Subbrightness data value
·
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”
ALIGNMENT INSTRUCTIONS
to obtain normal
brightness level.
11
Page 13
SCHEMATIC DIAGRAM
12
Page 14
EXPLODED VIEW
17
16-1
REMARK S
MATERIAL
EPS 20D51PAD
LDPE T0.03X1300X1000
DW-3
150 ART P/E FILM(C/TV)1SPEC PLATE
HIPS BK
30X190 BK2
30X80 BK
CR T2.0
1
1
5 TT2 TRS 4X14 MFZN BK
BAG PE
CARTON BOX
16
4858193401
20
SCREW TAPPTITE
4858211800
4858055200
4855415800
7172401412
19
18
17
16-1
2SCREW CRT FIXING AS
1
1
COVER BACK
4852155601
16
4
111
SCREW CRT FIXING AS
RUBBER
MAIN PCB
4856214902
15
CRT
4856013300
4856013302
4856215402
14
14-3
14-2
14-1
4945801+5541201
HIPS BK
BUTTON CTRL
BUTTON
4851915401
4854945801
131211
PVC T1.0
TT2 WAS 3X12 MFZN BK
PMMA MILKY
1
DECO SENSOR
4855541201
HIPS BK
1
2
8
1
SCREW TAPPTIE
INSU PLATE
SPEAKER
MASK FRONT
4857618000
7128301212
4852073601
876
9
10
9-1
TT2 WAS 3X12 MFZN BK
CUAU+ABS BK
PC BK
11
DECO COVER
4855313101
HIPS BK
SWPA PIE 0.5
2
SCREW TAPPTIE
7128301212
4-1
1
1
PANEL
SPRING
4852326511
4856716000
432
ABS BK
EGI T0.5
2
1
PART NAMEQ'tyPART CODENo
BUTTON POWER
GRILL
4854856401
4852539601
1
2326511+4856401+6716000
1
1
MARK BRAND
PANEL FRONT
4855617500
4852067101
5
15
12
13
11
14-3
10-1
10
9-1
9
4-1
14-2
14
14-1
10-1
10
8
9-1
9
18
19
6
4
5
3
2
20
7
1
13
Page 15
EXPLODED VIEW
14
13
REMARKS
12
HIPS BK
CN-220C
FELT T0.7 L=200CLOTH BLACK
A48JLL91x50 M16
SWRM
30X190 BK
DC-20SF
CR T2.0
4
4
150ART P/E FILM
T2S TRS 4X14 MFZN
1
67122401411
1
4
4
1
T2S TRS 3X12 MFZN
2
1
8
3
1
PC SMOG
A1050P-H24 T2.0
ABS BK
HIPS BK
SWPA PIE 0.5
1
1
1
1
11
MATERIAL
EGI T0.5
EGI T0.5
ABS BK
1
1
1
11
WASHER RUBBER
SPECIAL SCREW
CRT
SPEC PLATE
DEGAUSING COIL
SCREW CRT FIXING AS.
4856214902
4856013302
4856013302
4856016100
10
19
18
1716151413
58G0000146
4855415800
SCREW TAPPING
COVER BACK
4852156201
4857817611
121110
MAIN PCB ASSY
PTMPMSJ801
SCREW TAPPING
7128301211
987
SPEAKER
BUTTON
PTSPPWJ776
4854945901
MASK FRONT
MARK BRAND
4852067101
4855615900
654
SPRING
PANEL CTRL
4856716000
4852326601
3
PART NAMEQ'tyPART CODE
GRILL R
GRILL L
BUTTON POWER
4852539800
4852539700
4854856601
1
2
No
1-1
9 8
15
7
16
6
5
18 17
4
3
2
1
1
1
14
Page 16
PRINTED CIRCUIT BOARD
15
Page 17
SERVICE PARTS LIST
LOCPART NAMEPART DESCRIPTIONQTY REMARK
R
is a recommendable part for stock.
is safety component, so it must be used the same component.
✐ CAUTION : In this Service Manual, some parts can be changed for improving their
performance without notice in the parts list. So, if you need the latest parts
information, please refer to PPL(Parts Price List)in Service information
Center(http://svc.dwe.co.kr)
Page 18
LOCPART NAMEPART DESCRIPTIONQTY REMARK
SERVICE PARTS LIST
LOCPART NAMEPART DESCRIPTIONQTY REMARK
Z501FILTER CERAXT 4.5MB1
ZZ200PCB CHIP MOUNT B ASDTQ-20D5FSPN1
CC151 C CHIP CERA50V X7R 0.01MF K 20121
CC152 C CHIP CERA50V X7R 0.01MF K 20121
CC153 C CHIP CERA50V X7R 0.01MF K 20121
CC154 C CHIP CERA50V X7R 0.01MF K 20121
CC155 C CHIP CERA50V X7R 0.01MF K 20121
CC202 C CHIP CERA50V CH 20PF J 20121
CC203 C CHIP CERA50V CH 20PF J 20121
CC204 C CHIP CERA50V CH 820PF J 20121
CC205 C CHIP CERA50V CH 180PF J 20121
CC206 C CHIP CERA50V X7R 0.01MF K 20121
CC207 C CHIP CERA50V X7R 0.1MF K 20121
CC208 C CHIP CERA50V X7R 0.1MF K 20121
CC209 C CHIP CERA50V X7R 0.1MF K 20121
CC210 C CHIP CERA50V X7R 0.01MF K 20121
CC212 C CHIP CERA50V X7R 0.01MF K 20121
CC213 C CHIP CERA50V X7R 0.01MF K 20121
CC214 C CHIP CERA50V X7R 0.01MF K 20121
CC215 C CHIP CERA50V X7R 0.1MF K 20121
CC217 C CHIP CERAY5V 50V 0.47MF Z 20121
CC220 C CHIP CERA50V X7R 0.01MF K 20121
CC501 C CHIP CERA50V CH 47PF J 20121
CC502 C CHIP CERA50V CH 20PF J 20121
CC528 C CHIP CERA50V X7R 1000PF K 20121
CC551 C CHIP CERA50V CH 100PF J 20121
CC552 C CHIP CERA50V CH 100PF J 20121
CC556 C CHIP CERA50V CH 8PF D 20121
CC560 C CHIP CERA50V X7R 0.01MF K 20121
CC562 C CHIP CERA50V CH 18PF J 20121
CC567 C CHIP CERA50V CH 180PF J 20121
CC568 C CHIP CERA50V X7R 0.01MF K 20121
CC569 C CHIP CERA50V Y5V 0.1MF Z 20121
CC570 C CHIP CERA50V Y5V 0.1MF Z 20121
CC571 C CHIP CERA50V Y5V 0.1MF Z 20121
CC573 C CHIP CERA50V Y5V 0.1MF Z 20121
CC575 C CHIP CERA50V X7R 1000PF K 20121
CC605 C CHIP CERA50V X7R 0.1MF K 20121
CC650 C CHIP CERA50V Y5V 0.1MF Z 20121
CC651 C CHIP CERA50V X7R 4700PF K 20121
CC652 C CHIP CERA50V X7R 4700PF K 20121
CC653 C CHIP CERA50V Y5V 0.1MF Z 20121
CC654 C CHIP CERA50V X7R 0.01MF K 20121
CC655 C CHIP CERA50V CH 4PF C 20121
CC656 C CHIP CERA50V CH 4PF C 20121
CC661 C CHIP CERA50V Y5V 0.1MF Z 20121
CC663 C CHIP CERA50V Y5V 0.1MF Z 20121
CC665 C CHIP CERA50V Y5V 0.1MF Z 20121
CC666 C CHIP CERA50V X7R 470PF K 20121
CC667 C CHIP CERA50V X7R 0.01MF K 20121
CC669 C CHIP CERA50V X7R 470PF K 20121
CC670 C CHIP CERA50V X7R 470PF K 20121
CC671 C CHIP CERA50V X7R 0.01MF K 20121
CC752 C CHIP CERA50V CH 18PF J 20121
CC753 C CHIP CERA50V CH 18PF J 20121
CC754 C CHIP CERA50V X7R 0.01MF K 20121
CC755 C CHIP CERA50V X7R 0.01MF K 20121
CC756 C CHIP CERA50V CH 220PF J 20121
CC757 C CHIP CERA50V X7R 0.033MF K 20121
CC758 C CHIP CERA50V CH 100PF J 20121
CC759 C CHIP CERA50V CH 100PF J 20121
CC760 C CHIP CERA50V CH 100PF J 20121
CC761 C CHIP CERA50V X7R 0.1MF K 20121
CC768 C CHIP CERA50V CH 100PF J 20121
CC780 C CHIP CERA50V X7R 0.01MF K 20121
CCA01 C CHIP CERA50V X7R 1000PF K 20121
CCA13 C CHIP CERA50V X7R 1000PF K 20121
CCA14 C CHIP CERA50V X7R 1000PF K 20121
I201IC CHIP PIPSDA9388X1
JC210R CHIP1/10 0 OHM 20121
JC401R CHIP1/10 0 OHM 20121
JC502R CHIP1/10 0 OHM 20121
JC504R CHIP1/10 0 OHM 20121
JC507R CHIP1/10 0 OHM 20121
JC510R CHIP1/10 0 OHM 20121
JC604R CHIP1/10 0 OHM 20121
JC680R CHIP1/10 0 OHM 20121
JCA01R CHIP1/10 0 OHM 20121
JCA03R CHIP1/10 0 OHM 20121
RC105 R CHIP1/10 15K OHM J 20121
RC150 R CHIP1/10 15K OHM J 20121
RC151 R CHIP1/10 100K OHM J 20121
RC154 R CHIP1/10 47K OHM J 20121
RC156 R CHIP1/10 47K OHM J 20121
RC165 R CHIP1/10 4.7K OHM J 20121
RC202 R CHIP1/10 4.7K OHM J 20121
RC203 R CHIP1/10 1K OHM J 20121
RC204 R CHIP1/10 3.9K OHM J 20121
RC205 R CHIP1/10 47K OHM J 20121
RC206 R CHIP1/10 1K OHM J 20121
RC207 R CHIP1/10 47K OHM J 20121
RC208 R CHIP1/10 1K OHM J 20121
RC209 R CHIP1/10 1K OHM J 20121
RC210 R CHIP1/10 0 OHM 20121
RC211 R CHIP1/10 100 OHM J 20121
RC212 R CHIP1/10 330 OHM J 20121
RC213 R CHIP1/10 330 OHM J 20121
RC216 R CHIP1/10 1K OHM J 20121
RC219 R CHIP1/10 75 OHM J 20121
RC220 R CHIP1/10 0 OHM 20121
RC351 R CHIP1/10 6.8K OHM J 20121
RC359 R CHIP1/10 27K OHM J 20121
RC360 R CHIP1/10 33K OHM J 20121
RC361 R CHIP1/10 2.2K OHM J 20121
RC362 R CHIP1/10 11K OHM J 20121
RC405 R CHIP1/10 1K OHM J 20121
RC453 R CHIP1/10 10K OHM J 20121
RC454 R CHIP1/10 1K OHM J 20121
RC455 R CHIP1/10 330 OHM J 20121
RC501 R CHIP1/10 1K OHM J 20121
RC503 R CHIP1/10 5.6K OHM J 20121
RC508 R CHIP1/10 1K OHM J 20121
RC509 R CHIP1/10 1K OHM J 20121
RC510 R CHIP1/10 390 OHM J 20121
17
Page 19
LOCPART NAMEPART DESCRIPTIONQTY REMARK
SERVICE PARTS LIST
LOCPART NAMEPART DESCRIPTIONQTY REMARK
RC525 R CHIP1/10 1K OHM J 20121
RC526 R CHIP1/10 1.3K OHM J 20121
RC530 R CHIP1/10 560 OHM J 20121
RC531 R CHIP1/10 560 OHM J 20121
RC533 R CHIP1/10 39 OHM J 20121
RC554 R CHIP1/10 1K OHM J 20121
RC557 R CHIP1/10 1.8K OHM J 20121
RC558 R CHIP1/10 1K OHM J 20121
RC559 R CHIP1/10 330 OHM J 20121
RC561 R CHIP1/10 330 OHM J 20121
RC562 R CHIP1/10 820K OHM J 20121
RC565 R CHIP1/10 12K OHM J 20121
RC566 R CHIP1/10 12K OHM J 20121
RC567 R CHIP1/10 10K OHM J 20121
RC568 R CHIP1/10 4.7K OHM F 20121
RC569 R CHIP1/10 1.5K OHM J 20121
RC570 R CHIP1/10 10K OHM J 20121
RC571 R CHIP1/10 2.7K OHM J 20121
RC572 R CHIP1/10 22K OHM J 20121
RC573 R CHIP1/10 1K OHM J 20121
RC580 R CHIP1/10 330 OHM J 20121
RC581 R CHIP1/10 330 OHM J 20121
RC582 R CHIP1/10 330 OHM J 20121
RC601 R CHIP1/10 1K OHM J 20121
RC602 R CHIP1/10 1K OHM J 20121
RC603 R CHIP1/10 8.2K OHM J 20121
RC604 R CHIP1/10 8.2K OHM J 20121
RC651 R CHIP1/10 1K OHM J 20121
RC652 R CHIP1/10 1K OHM J 20121
RC661 R CHIP1/10 5.1K OHM J 20121
RC662 R CHIP1/10 510 OHM J 20121
RC665 R CHIP1/10 10K OHM J 20121
RC701 R CHIP1/10 39 OHM J 20121
RC703 R CHIP1/10 100 OHM J 20121
RC704 R CHIP1/10 1K OHM J 20121
RC705 R CHIP1/10 4.7K OHM J 20121
RC706 R CHIP1/10 4.7K OHM J 20121
RC707 R CHIP1/10 1K OHM J 20121
RC708 R CHIP1/10 4.7K OHM J 20121
RC709 R CHIP1/10 1.5K OHM J 20121
RC712 R CHIP1/10 47K OHM J 20121
RC731 R CHIP1/10 10K OHM J 20121
RC732 R CHIP1/10 1K OHM J 20121
RC733 R CHIP1/10 1K OHM J 20121
RC734 R CHIP1/10 1K OHM J 20121
RC735 R CHIP1/10 1K OHM J 20121
RC736 R CHIP1/10 10K OHM J 20121
RC737 R CHIP1/10 10K OHM J 20121
RC738 R CHIP1/10 470 OHM J 20121
RC743 R CHIP1/10 1K OHM J 20121
RC744 R CHIP1/10 1K OHM J 20121
RC746 R CHIP1/10 2.2K OHM J 20121
RC747 R CHIP1/10 3.9K OHM J 20121
RC750 R CHIP1/10 4.7K OHM J 20121
RC751 R CHIP1/10 470 OHM J 20121
RC752 R CHIP1/10 470 OHM J 20121
RC755 R CHIP1/10 4.7K OHM J 20121
RC756 R CHIP1/10 4.7K OHM J 20121
RC758 R CHIP1/10 4.7K OHM J 20121
RC759 R CHIP1/10 4.7K OHM J 20121
RC763 R CHIP1/10 200 OHM J 20121
RC776 R CHIP1/10 4.7K OHM J 20121
RC780 R CHIP1/10 100 OHM J 20121
RC781 R CHIP1/10 1K OHM J 20121
RC782 R CHIP1/10 330 OHM J 20121
RC784 R CHIP1/10 510K OHM J 20121
RC785 R CHIP1/10 100 OHM J 20121
RC786 R CHIP1/10 1K OHM J 20121
RC787 R CHIP1/10 4.7K OHM J 20121
RC788 R CHIP1/10 4.7K OHM J 20121
RC789 R CHIP1/10 1K OHM J 20121
RC791 R CHIP1/10 1K OHM J 20121
RC792 R CHIP1/10 1K OHM J 20121
RC793 R CHIP1/10 1K OHM J 20121
RC794 R CHIP1/10 1K OHM J 20121
RC795 R CHIP1/10 10K OHM J 20121
RC796 R CHIP1/10 470 OHM J 20121
RC797 R CHIP1/10 10K OHM J 20121
RC798 R CHIP1/10 1K OHM J 20121
RC799 R CHIP1/10 10K OHM J 20121
RCA10 R CHIP1/10 220K OHM J 20121
RCA11 R CHIP1/10 100 OHM J 20121
RCA12 R CHIP1/10 100 OHM J 20121
RCA13 R CHIP1/10 220K OHM J 20121
RCA14 R CHIP1/10 910KOHM J 20121
RCA16 R CHIP1/10 47K OHM J 20121
RCA17 R CHIP1/10 47K OHM J 20121
RCA18 R CHIP1/10 47K OHM J 20121
RCA19 R CHIP1/10 1K OHM J 20121
RCA20 R CHIP1/10 20K OHM J 20121
RCV03 R CHIP1/10 75 OHM J 20121
RCV04 R CHIP1/10 100 OHM J 20121
RCV05 R CHIP1/10 47 OHM J 20121
RCV06 R CHIP1/10 51 OHM J 20121
RCV10 R CHIP1/10 2.4K OHM J 20121
RCV11 R CHIP1/10 1K OHM J 20121
RCV12 R CHIP1/10 10 OHM J 20121
ZZ200PCB MAIN (RHU) ASDTQ-20D5FSPN1
C105C ELECTRO16V RSS 470MF (10X12.5)TP1
C310C ELECTRO25V RSS 1000MF (13X20) TP1
C410C ELECTRO250V RSS 10MF (10X20) TP1
C414C ELECTRO35V RSS 470MF (10X20) TP1
C415C ELECTRO16V RSS 1000MF (10X20) TP1
C510C ELECTRO16V RSS 470MF (10X12.5)TP1
C514C ELECTRO16V RSS 470MF (10X12.5)TP1
C670C ELECTRO16V RSS 470MF (10X12.5)TP1
C681C ELECTRO16V RSS 2200MF (13X25) TP1
C682C MYLAR100V 0.22MF J1
C684C MYLAR100V 0.22MF J1
C802C CERA1KV B 4700PF K (TAPPING)1
C803C CERA1KV B 4700PF K (TAPPING)1
C812C ELECTRO16V RSS 1000MF (10X20) TP1
C813C CERA SEMI2KV BL(N) 470PF K (T)1
C814C ELECTRO160V RSS 100MF (16X25) TP1
J220WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J221WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J222WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J301WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J302WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J303WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J304WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J305WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J306WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J307WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J309WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J401WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J402WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J403WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J404WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J405WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J407WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J408WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J409WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J410WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J416WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J425WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J503WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J504WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J505WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J506WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J507WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J508WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J509WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J510WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J511WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J512WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J513WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J514WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J515WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J516WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J517WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J518WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J519WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J520WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J521WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J522WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J523WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J524WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J525WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J526WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J529WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J535WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J536WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J537WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J542WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J551WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J556WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J560WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J601WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J602WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J603WIRE COPPERAWG22 1/0.65 TIN COATING0.05
21
Page 23
LOCPART NAMEPART DESCRIPTIONQTY REMARK
SERVICE PARTS LIST
LOCPART NAMEPART DESCRIPTIONQTY REMARK
J605WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J607WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J608WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J609WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J610WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J611WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J613WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J614WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J615WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J620WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J621WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J630R CARBON FILM1/4 10K OHM J1
J701WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J702WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J703WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J704WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J705WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J706WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J707WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J708WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J709WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J710WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J711WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J712WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J713WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J714WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J715WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J717WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J718WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J720WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J721WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J722WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J723WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J725WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J726WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J730WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J740WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J807WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J808WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J809WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J812WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J813WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J822WIRE COPPERAWG22 1/0.65 TIN COATING0.05
J823WIRE COPPERAWG22 1/0.65 TIN COATING0.05
L111COIL PEAKING0.56UH M (AXIAL 3.5MM)1
L112COIL PEAKING22UH K (AXIAL 3.5MM)1
L502COIL PEAKING47UH 10.5MM K (LAL04TB)1
L503COIL PEAKING15UH K (AXIAL 3.5MM)1
L533COIL PEAKING15UH K (AXIAL 3.5MM)1
L601COIL PEAKING4.7UH K (AXIAL 3.5MM)1
L603COIL PEAKING100UH K (AXIAL 3.5MM)1
L604COIL BEADHC-35501
L605COIL BEADHC-35501
L607COIL BEADHC-35501
L651COIL PEAKING15UH K (AXIAL 3.5MM)1
L701COIL PEAKING22UH K (AXIAL 3.5MM)1
L802COIL BEADHC-35501
C670C ELECTROCEXF1C471V 16V RSS 470MF (10X12.5)TPCEXF1V331C 35V RUS 330MF (10X20) TPCEXF1V331C 35V RUS 330MF (10X20) TPCEXF1V331C 35V RUS 330MF (10X20) TPCEXF1V331C 35V RUS 330MF (10X20) TP
C802C CERACCXB3A472K 1KV B 4700PF K (TAPPING)CCXB2H222K 500V B 2200PF K (TAPPING)CCXB2H222K 500V B 2200PF K (TAPPING)CCXB2H222K 500V B 2200PF K (TAPPING)
C803C CERACCXB3A472K 1KV B 4700PF K (TAPPING)CCXB2H222K 500V B 2200PF K (TAPPING)CCXB2H222K 500V B 2200PF K (TAPPING)CCXB2H222K 500V B 2200PF K (TAPPING)
CC652 C CHIP CERAHCBK472KCA 50V X7R 4700PF K 2012HCBK153KCA 50V X7R 0.015MF K 2012HCBK153KCA 50V X7R 0.015MF K 2012HCBK153KCA 50V X7R 0.015MF K 2012HCBK153KCA 50V X7R 0.015MF K 2012
J021WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J201WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J206WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J209WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J210WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J211WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J224WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING 85801065GY AWG22 1/0.65 TIN COATING
J530WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING
J536WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J540WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING
J551WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J556WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J606C CERA SEMICBZF1H104Z 50V F 0.1MF ZCBZF1H104Z 50V F 0.1MF ZCBZF1H104Z 50V F 0.1MF ZCBZF1H104Z 50V F 0.1MF Z
J611WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J612WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING
J613WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J614WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
J625WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING
J684WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING85801065GY AWG22 1/0.65 TIN COATING
J720WIRE COPPER85801065GY AWG22 1/0.65 TIN COATING
PWC1 CORD POWER AS4859909910LP-19+H03VVH2-F+TERM4859902710KJ-10+SPT-2+YPT018=21004859907910ME301P+TER=18304859900910KKP-419C+YPT-018=21004859902710KJ-10+SPT-2+YPT018=2100
686, AHYEON-DONG MAPO-GU
SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX : DWELEC K28177-8
CABLE : “ DAEWOOELEC”
Page 35
APPENDIX
IC DESCRIPTION
U-COM(I701)
CABLE (H)
ST / MONO
BLUE BACK
NC
AUTO TINT
NC
1
P10
2
P11
3
P12
4
P13/PWM1
5
P14/PWM2
6
P15/PWM3
7
P16
8
P17/PWM
9
VSS
10
XT1
11
XT2
12
VDD
P07TV ONLY (H)
P06
P05
P04
P03
P02
P01
P00
P73/INT3/TOIN
P72/INT2/TOIN
P71/INT1
P70/INT0
42
POWER ON(H)
41
NC
40
AUDIO MUTE(H)
39
AKB WHITE
38
SOUND RESET
H.OUT
37
ON(L)/OFF(H)
36
POWER ON
35
ST-BY(H)
34
REMOCON IN
33
NC
32
NC
31
NC
13
KEY IN
AFT IN
AGC IN
SPARE A/DM-DATA
P84/AN4
14
P85/AN5
15
P86/AN6
16
P87/AN7
17
RES
18
FILT
19
CVIN
20
VS
21
HSR
- X'TAL : 32.768 KHz
P63/SCLK1
P62/SDA1
P61/SCLK0
P60/SDA0
BL
G
30
T-CLOCK
29
T-DATA
28
M-CLOCK
27
26
I
25
24
B
23
22
1
Page 36
APPENDIX
IC DESCRIPTION
1. Abstract.
This specification is 1-Tuner Mono Model for North/South America, CCD 1-Chip MICOM
It is developing software specification for tuning only NTSC and 3 system TV F/S.
* 3 System : NTSC-M, PAL-M, PAL-N.
2. H/W Outline.
1) ROM : 28,672 x 8bits.tsc
: 15,872 x 8 bits for CGROM.
2) RAM : 512 x 8bits.
: 336 x 9bits.(for CRT Display)
3) OSD Function.
Screen Display. : 34 characters x 16 lines.(by software)
RAM : 336 words. (9 bits per word)
Display area. : 34 words. x 8 lines.
1st control area. : 8 words. x 8 lines.
Characters.
244 patterns programmable.
Up to 244 kinds of 16 x 17 dot characters.
Up to 244 kinds of 8 x 9 dot characters.
or
Up to 244 kinds of 16 x 32 dot characters used 16K bytes.
Various characters attributes.
Character colors.: 16 colors
Character background colors.: 16 colors
Fringe / shadow colors.: 16 colors
Full screen colors.: 16 colors
Rounding.
Underline.
Italic character.(slanting)
Attribute can be changed without spacing.
Vertical display start line number can be set for each row independently.(Row can be overlapped.)
Horizontal display start position can be set for each row independently.
Different display modes can be set for each row independently.
Caption and Text mode/ OSD mode 1/ OSD mode 2(Quarter size)/ Simplified graphic mode.
Ten character sizes.
Horiz. x Vert. = (1x1),(1x2),(2x2),(2x4),(0.5x0.5)
(1.5x1),(1.5x2),(3x2),(3x4),(0.75x0.5)
Shuttering and scrolling on each row.
LC863228A.
3. System Feature.
1) The system for TV tuning is Frequency Synthesis type.
2) Closed Captions function is interior designed.
2
Page 37
3) On Screen Displays function is interior designed.
4) Package.: 42 PIN SDIP.
5) Tuner (Pre-scaler.): I2C Bus.
/PLL IC
6) Remocon.: The IC of Transmission (MITSUBISHI M50560)
7) E2PROM.: 24C08(I2C Bus) à Apply one byte Read/Write mode.
36P01TV/VIDEO-TV Mode:’high’ LIne(Videl)Mode:’Low’
37P02H.Out-Use to discharge High Voltage when TV set turns off.
38P03Sound Reset-Sound IC Reset : ITT-Only-Cn220
39P04AKB-Use when control AKB(’High Beam:
’Hihg(5V)’Output)
40P05Audio Mute -Use only ’read data’ of ’LA76814/10.
41P06Vudio White -Use when TV set turns off.
42P07Power-Use when dose power off/on.
-Power Off: Output ’Low(DC 0V),
-Power on : Output ’High(DC 5V)
Output form and existence of pull-up resistor for every port can be specified for each bit.
At port 1, "Programable pull-up reistor provided" when specifying either CMOS or N-ch open drain output.
Port status in reset.
TerminalI/OPull-up resistor status at selecting pull-up option
Port 0IPull-up resistor OFF, ON after reset release
Port 1IProgrammable pull-up resistor OFF.
7
Page 42
APPENDIX
IC DESCRIPTION
I101
DCT814(LA76814) : IC VIDEO PROCESSOR
AUDIO OUT
FM OUTPUT
PIF AGC
RF AGC OUT
PIF INPUT1
PIF INPUT2
IF GND
IF VCC
FM FILTER
AFT OUTPUT
BUS DATA
BUS CLOCK
ABL IN
OSD RED INPUT
OSD GREEN INPUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
54
SIF INPUT
53
SIF APC FILTER
52
SIF OUTPUT
51
EXT. AUDIO INPUT
50
VCO FILTER
49
VCO COIL1
48
VCO COIL2
47
APC FILTER
46
VIDEO OUTPUT
45
BLACK LEVEL DETECTOR
44
INT. VIDEO INPUT(S-C IN)
43
VIDEO/VER. VCC
42
EX. VIDEO INPUT(Y IN)
41
VIDEO/VER./BUS GND
40
VIDEO OUTPUT
OSD BLUE INPUT
FAST BLANKING INPUT
RGB VCC
RED OUTPUT
GREEN OUTPUT
BLUE OUTPUT
B.AKB INPUT
VERTICAL OUTPUT
RAMP ALC FILTER
HOR./BUS VCC
HOR. AFC FILTER
HORIZONTAL OUTPUT
16
17
18
19
20
21
22
23
24
25
26
27
39
CHROMA AFC1 FILTER
38
3.58 CRYSTAL
37
fsc OUTPUT
36
CHROMA AFC2 FILTER
35
34
X-RAY INPUT
33
CCD/HOR. GND
32
CCD FILTER
31
CCD VCC
30
CLOCK(4MHz) OUTPUT
29
VCO IREF
28
FBP INPUT
8
Page 43
APPENDIX
IC DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
SymbolParameterValueUnit
Vs Supply Voltage 20V
IoOutput Peak Current (inernally limited)2A
Ptot Total Power Dissipation (Tcase=70oC) 33w
TopOperationg Temperature0 to 70C
Tstg, TjStorage and Junction Temperature-40 to + 150C
THERMAL DATA
SymbolDescriptionValueUnit
Rth j-caseThermal Resistance Junction to caseTyp. 1.4Max.2C/W
o
o
o
PIN CONNECTION
ELECTRICAL CHARACTERISTICS (Vcc = 11V, R = 8, f = 1kHz, Tamb = 25 C unless otherwise sepcified)
(Top view)
o
SymbolParameter Test ConditionMin.Typ.Max.Unit
VccSupply Range31118V
IqTotal Quiescent Current5065mA
VosOutput offest Voltage120mV
Po Output Power THD = 10%6.37W
Total Harmonic DistortionPo = 1W0.050.2%
THD
SVRSupply Voltage Rejectionf = 100 Hz VF = 05 V4056dB
CTCrosstalk4660dB
Amute Mute Attenuation6080dB
TwThermal Threshold150oC
GvClosed Loop Voltage Gain252627dB
AGvVoltage Gain Matching 0.5dB
R1Input Resistance2530K
VTmute
Mute Thresholdfor Vcc > 6.4VO = -30dB
Po = 0.1W to 2W
f = 100Hz VR = 0.5V
for Vcc > 6.4V;V0=-3.0db
9
1%
2.3
Vcc/2-1
Page 44
TROUBLESHOOTING GUIDE
1. NO POWER
APPENDIX
R802
R813
1
Check
F801(125V 4A)
PCW1
4
Check
waveform
I801
#2
#1
#6 #3
C804
L811
C802
F801
B+
#4
#2
#5
#6
L801
133V
45V
12V
L807
L806
D807
C814
D808
D813
C812
R801
R814
C815
D881~D884
Q804
C820
TUNER
33V
DR.TRNS B+
45V
SOUND B+
R817
C819
133V
12V
3
Check
2A05G
2
Check
R801(7W 2.2)
TO I101 #34
OCP
Check
Voltage
5
Check
Voltage
6
7
Check
Voltage
D805
R811
C807
#4
#1
#2#3
12V
133V
C850
10
C706
ST-BY
5V
1
Q805
133V
MICOM #37
R819
D812
5.6Vz
2
I803
3
R851
Page 45
APPENDIX
TROUBLESHOOTING GUIDE
2. NO PICTURE
Check the waveform of I101 #46
c
Check
the voltages
5V
33V
U102
TUNER
T-DATA
T-CLOCK
#29 #30
I701
MICOM
#10#11 #12
XC701
32.768KHz
Check
the crystal
ST-BY
5V
IF OUT
clock/data signal
AFT
#14
#27
SDA
#28
SCL
clock/data signal
Check
IF Vcc (5V)
Check
Check
SF101
SAW FILTER
#5#6
#10
#8
I101
#11
#12
NG : GO to the figure c
OK : Go the figure d
Check
IF AGC voltage
#3
#4
Check
RF AGC voltage
#46
#44
Check
the waveform
Z501
4.5M Trap
d
Z501
RBG Vcc (9V)
Check
RBG signal output
Check
ABL current
Check
composite video
C525
Check
#44
#18
#19
#20
#21
#13
I101
#43
#25
CHROMA/VER Vcc(5V)
HOR/BUS Vcc(5V)
11
Check
Check
T402
FBT
Check
200V LINE
D405
R412
Check
heater voltage
21V
-3V
Page 46
3. NO SOUND
APPENDIX
TROUBLESHOOTING GUIDE
Check audio output signal of I101 #1
3-1. CN-220N CHASSIS
e
33V
U102
TUNER
T-DATA
#29 #30
I701
MICOM
#10#11 #12
XC701
32.768KHz
Check
the crystal
5V
T-CLOCK
ST-BY
5V
IF OUT
AFT
#14
#27
SDA
#28
SCL
clock/data signal
Check
IF Vcc (5V)
Check
SF101
SAW FILTER
#5#6
#10
#8
I101
#11
#12
Check
FM filter circuit
NG : Go to the figure e
OK : Go to the figure f
Check
IF AGC voltage
#3
#52
#54
If no signal,
then change I101
SIF input signal
#9
Check
SIF output signal
Check
5V
f
Check
Vcc of the sound AMP
SOUND
12V
Audio L - in
Audio R - in
audio signal in
R601
C681
C682
C684
Check
#3, #13
#4
TDA7266S
#12
I601
#2
#14
#1
#5
#6
Check
audio signal out
C605
C605
C683
12
Q601
L out
R out
earphone
Check
L:Mute / H:Normal
Micom #40
Audio MUTE
H:Mute L:Normal
Page 47
APPENDIX
TROUBLESHOOTING GUIDE
3-2. CN-220N CHASSIS
e
5V
33V
XC701
32.768KHz
U102
TUNER
T-DATA
T-CLOCK
#29#30
I701
MICOM
#10 #11#12
ST-BY
5V
Check
the crystal
IF OUT
AFT
#14
#27
SDA
#28
SCL
clock/data signal
Check
IF Vcc (5V)
Check
SF101
SAW FILTER
#5#6
#10
#8
I101
#11
#12
Check
FM filter circuit
#3
#52
#54
#9
Check
IF AGC voltage
Check
SIF output signal
If no signal,
then change I101
Check
SIF input signal
5V
f
Check
Vcc of the sound AMP
SOUND
12V
Audio - in
audio signal in
R601
C602
C603
Check
#1
#4
TDA7267A
I601
audio signal out
#2
C605
#6
13
Check
C604
SPEAKER
Q601
Check
L:Mute / H:Normal
Micom #40
Audio MUTE
H:Mute L:Normal
Page 48
4. CH DON’ T STOP
APPENDIX
TROUBLESHOOTING GUIDE
Check the input signal conditions
5V
h
33V
T-DATA
#29#30
TUNER
T-CLOCK
I701
MICOM
U102
#15
#14
Check
5V/33V LINE
IF OUT
AGC IN
C103
AFT
RF AGC Voltage
Check
AFT window Voltage
2.1V~2.5V
Check
NG : Loss of signal or weak signal
OK : Go to the figure g
SF101
SAW FILTER
#4
RF AGC OUTPUT
#10
I101
XC701
32.768KHz
#10
Check
the crystal
#11#12
ST-BY
5V
#27
#28
SDA
SCL
SDASCL
#5 #6
EEPROM
I703
#8
ST-BY
5V
14
Check
SDA/SCL
#11
#12
#49
#48
Check
VCO coil
L501
VCO COIL
Page 49
APPENDIX
TROUBLESHOOTING GUIDE
5. NO COLOR
Check
C.V.S waveform
composite video in
Check
the voltage
RGB Vcc (9V)
Check
R/G/B signal
R OUT
G OUT
B OUT
#44
#18
#19
#20
#21
I101
Check
the voltage
#43
Video/Chroma/Deflection Vcc
Check
the crystal
#38
X502
6. NO VERTICAL DEFLECTION
C507
C508
Check
the voltage
( 2.5V )
5V
#24
V RAMP ALC filter
I101
Vertical output
vertical output signal
Check
the voltage
#43
Video/Chroma/Deflection Vcc
X502
#23
Check
Vertical IC Vcc (25V)
C307
Vertical
D.Y.
If no output,
then change I301
#5
(Invert RAMP in)
#2
(Output)
Check
the waveform
Check
the voltage (25V)
#6
I301
LA7841
15
Page 50
7. NO ON-SCREEN DISPLAY
APPENDIX
TROUBLESHOOTING GUIDE
Check
the signal (60Hz)
V.SYNC IN
H.SYNC IN
Check
the signal (15,734Hz)
32.768KHz
#20
#21
XC701
I701
MICOM
#10#11 #12
ST-BY
5V
Check
the crystal
SDA
SCL
#22
#23
#24
#25
Check
clock/data signal
OSD R
OSD G
OSD B
BLANK
Check
OSD R/G/B/BLANK signal
If OSD does not operate,
then change the I701
I101
#14
#15
#16
#17
8. REMOTE CONTROL DOES NOT OPERATE
I701
MICOM
#10#11#12
XC701
32.768KHz
Check
the crystal
ST-BY
5V
#34
OUT
Check
the waveform
IL701
Remote Control
PREAMP
GND
ST-BY
5V
16
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