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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.

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 spe- cial 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.

1. SAFETY INSTRUCTION

WARNING : Only competent service personnel may carry out work involving the testing or repair of this equipment 

Summary of Contents for CM21S7 Series

Page 1: ...tandard PAL SECAM B G D K NTSC AV Only Sound system Mono Power consumption 74W Speaker 5W 8 Ohm x 2 Teletext system 1 Page teletext Aerial Input 75 Ohm unbalanced Channel coverage off air S cable and...

Page 2: ...1 SAFETY INSTRUCTION 2 2 BLOCK DIAGRAM 3 3 SERVICE ALIGNMENT INSTRUCTIONS 4 4 SCHEMATIC DIAGRAM 6 5 PRINTED CIRCUIT BOARD PCB 7 6 EXPLODED VIEW 9 7 SERVICE PARTS LIST 11 1 TABLE OF CONTENTS...

Page 3: ...ass 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 meta...

Page 4: ...3 3 2 BLOCK DIAGRAM...

Page 5: ...screen key on the service remocon Adjust the screen volume of FBT the SCREEN value equal to 32 Press the SCREEN key of service remocon again 3 2 2 White Balance Select a dark picture and adjust R BIA...

Page 6: ...ont and Rear adjustment Receive the RETMA PATTERN Use the COR T UP DN keys for the WBF adjust and use the COR B UP DN keys for the WBR adjustment 3 2 7 AGC Adjust the antenna signal level to 64 2dBuV...

Page 7: ...6...

Page 8: ...7...

Page 9: ...8...

Page 10: ...9...

Page 11: ...10...

Page 12: ...BK 3CR M201C 4856219502 WASHER RUBBER CR T2 0 BLACK M211A 7172401452 SCREW TAPPTITE TT2 TRS 4X14 MFZN BK 3CR M211B 7178301252 SCREW TAPPTITE TT2 WAS 3X12 MFZN BK 3CR M541 4855419800 SPEC PLATE ART 15...

Page 13: ...C531 C593 C574 C561 C1B1H223KT C CERAMIC AXL UP050 B 0 022uF K C901 C902 C1B1H391KT C CERAMIC AXL UP050 B 390pF K C903 C905 C808 C1B1H561KT C CERAMIC AXL UP050 B 560pF K C832 CAI2G222PN C CERAMIC AC E...

Page 14: ...6 L512 L900 LA04180KBT COIL PEAKING AXL AL04TB LGA0203 180uH K L801 5CL213550T COIL BEAD HC 3550 LBQ 3 5 5 L401 5CL35TLX25 COIL LINEARITY LX 025 L802 5CL34940UH COIL CHOKE A 940 L403 5AL36TL451 COIL W...

Page 15: ...8040 N IC LA78040N TO 220 I805 UKIA111733 IC KIA1117API33 I804 ULM7805 N IC CW7805 I802 UPC17L1 N IC PHOTO PC 17L1 LTV 817M I703 5CU213388 IR PREAMP SM 3388 D707 DL50231 N LED DLL 50231 FYL 5013HD1C D...

Page 16: ...6W 220 J R818 RDD2002JNT R CARBON FILM 1 6W 20K J R522 R721 RA13 RDD2201JNT R CARBON FILM 1 6W 2 2K J R819 RDD2202JNT R CARBON FILM 1 6W 22K J R826 RDD2401JNT R CARBON FILM 1 6W 2 4K J R586 RDD2402JNT...

Page 17: ...I R821 RX22000JBT R MOX FILM RDL 2W 200 J MINI R404 RX22700JBT R MOX FILM RDL 2W 270 J MINI R811 RX233R0JBT R MOX FILM RDL 2W 33 J MINI R807 RX24702JBT R MOX FILM RDL 2W 47K J MINI R304 R306 R601 RS2R...

Page 18: ...J079 J086 R510 DA03 R534 RA19 J054 J100 J151 J011 J014 J026 4NWJP100 T WIRE COPPER AWG22 1 0 5 TIN COATING J027 J028 J030 J031 J038 J045 J048 J057 J059 J069 J073 J080 J081 J082 J005 J039 J060 4NWJP125...

Page 19: ...DAEWOO ELECTRONICS CORP PRINTED DATE April 2011 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA...

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