background image

2-2

LC2N_SC

LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON 
THE FOLLOWING PAGES:

1. CAUTION:

CAUTION:

 FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME 

TYPE_A,_V FUSE.

ATTENTION:

 UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE_A,_V.

2. CAUTION: 

Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. 
If Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not 
defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components 
in the power supply circuit to fail.

3. Note:

1. Do not use the part number shown on the drawings for ordering. The correct part number is shown in the 

parts list, and may be slightly different or amended since the drawings were prepared.

2. To maintain original function and reliability of repaired units, use only original replacement parts which are 

listed with their part numbers in the parts list section of the service manual.

4. Voltage indications on the schematics are as shown below: 

Plug the TV power cord into a standard AC outlet.:

5. How to read converged lines

6. Test Point Information

2

3

1

5.0

(3.0)

5.0

(3.0)

Voltage

Indicates that the voltage 
is not consistent here.

Power on mode
Power off mode

(Unit: Volt)

3

2

1

A

B

C

D

1-B1

1-D3

AREA D3

AREA B1

1-D3

   Distinction 

Area

Line Number 
(1 to 3 digits)

Examples:
1. "1-D3" means that line number "1" goes to the line number
    "1" of the area "D3".   
2. "1-B1" means that line number "1" goes to the line number
    "1" of the area "B1".

: Indicates a test point with a jumper wire across a hole in the PCB.

: Used to indicate a test point with a component lead on foil side.

: Used to indicate a test point with no test pin.

: Used to indicate a test point with a test pin.

Содержание WF15L5

Страница 1: ...l model 6615LF4 All other information is described in the service manual of the model 6615LF4 15 COLOR LCD TELEVISION WF15L5 TABLE OF CONTENTS Block Diagrams 1 1 Schematic Diagrams CBA s and Test Poin...

Страница 2: ...OLUME AUDIO MUTE SDA SCL INPUT 0 INPUT 1 S SW SCL SDA 20 35 31 40 19 32 41 TO POWER SUPPLY BLOCK DIAGRAM TO IF VIDEO BLOCK DIAGRAM TO AUDIO BLOCK DIAGRAM BACKLIGHT SW BACKLIGHT ADJ P ON H VOLUME AUDIO...

Страница 3: ...DEO1 IN JK701 S VIDEO IN BUFFER Q32 SDA TO SYSTEM CONTROL BLOCK DIAGRAM SCL S SW C Y 3 IC781 INPUT SELECT 5 Q703 4 13 12 Q702 14 1 2 Q701 15 SW CONTROL 10 9 11 INPUT 0 INPUT 1 TO SYSTEM CONTROL BLOCK...

Страница 4: ...H MATRIX AGC OFFSET CANCEL L R FILTER L R SAP SW SAP FILTER I2C DECORDER SAP DEMOD SAP OUT FILTER 29 30 TO IF VIDEO BLOCK DIAGRAM TUNER TUNER L CH R CH 21 27 24 IC851 MTS SAP AUDIO SIGNAL PROCESS AUDI...

Страница 5: ...5 1 EG 0 50 EG 1 49 EG 2 48 EG 3 47 EG 4 46 EG 5 45 EB 0 43 EB 1 42 EB 2 41 EB 3 40 EB 4 39 EB 5 38 OFFEV 12 STV1 13 CLKV 14 HMS1 E 7 HMS1 0 13 STH1 42 POL 43 LP 44 CN311 170 169 166 165 164 163 162...

Страница 6: ...ings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103 M 1...

Страница 7: ...the drawings were prepared 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of t...

Страница 8: ...ram L3120SCM1 MAIN 1 5 Ref No Position IC531 D 4 IC533 E 3 IC671 E 2 IC672 E 2 Q501 C 4 Q502 C 4 Q503 B 3 Q505 C 3 Q509 C 3 Q510 B 2 Q511 C 3 Q512 C 2 Q513 C 2 Q531 D 3 Q633 E 1 CN101A A 4 CN102A A 3...

Страница 9: ...2 4 L3120SCM2 Main 2 5 Schematic Diagram MAIN 2 5 Ref No Position IC31 I 1 IC851 H 3 IC852 J 4 Q32 J 2 CN113 G 1 ICS TRANSISTOR CONNECTOR...

Страница 10: ...matic Diagram L3120SCM3 MAIN 3 5 Ref No Position IC781 P 3 IC801 N 2 Q701 N 3 Q702 N 3 Q703 N 3 Q704 P 1 Q705 O 1 Q706 P 1 Q707 P 2 Q708 P 2 Q802 O 1 Q803 N 1 CN801 M 4 CN802 M 3 CN103A M 2 ICS TRANSI...

Страница 11: ...AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal For c...

Страница 12: ...osition Q401 AA 2 Q403 Z 2 Q404 Z 3 Q405 AA 2 Q406 AA 2 Q407 Z 3 Q408 Z 4 Q409 Z 2 Q410 Z 3 Q411 AA 3 Q412 AA 3 Q415 AA 1 Q416 AA 1 Q421 AC 4 Q422 AC 3 Q423 AC 2 Q424 AB 1 Q427 AA 3 Q428 AA 2 CN402 AD...

Страница 13: ...2 8 L3120SCF Function Schematic Diagram...

Страница 14: ...2 9 L3120SCL1 LCD Main 1 2 Schematic Diagram LCD MAIN 1 2 Ref No Position IC333 B 3 Q301 D 1 CN104 A 3 CN105 A 2 CN111 A 2 CN211 F 4 CN311 F 4 CN102B A 4 CONNECTORS IC TRANSISTOR...

Страница 15: ...in 2 2 Schematic Diagram LCD MAIN 2 2 Ref No Position IC151 I 3 IC171 J 3 IC191 H 2 IC192 H 1 IC193 H 2 IC201 J 1 Q131 I 4 Q201 J 1 CN112 L 4 CN312 L 3 CN101B L 4 CN103B G 2 ICS CONNECTORS TRANSISTORS...

Страница 16: ...1 WF9 Waveforms to be observed at Waveform check points Shown in Schematic Diagram 1DIV 1 0V 20ns R365 WF2 R202 WF3 1DIV 200mV 20 s Pin 11 of CN103A WF7 1DIV 200mV 20 s Pin 9 of CN103A WF8 1DIV 100mV...

Страница 17: ...IDEO1 IN AUDIO1 L IN MAIN CBA FUNCTION CBA BACK LIGHT CN402 2 1 CN311 1 3 2 5 4 7 6 8 9 10 13 12 11 14 15 17 16 19 18 21 20 22 23 24 27 26 25 28 29 30 GND CLKH GND GND HMS1 E ER 0 ER 1 ER 2 ER 3 ER 4...

Страница 18: ...D191 ZENER DIODE EDZTE61 4 7B QD1B00EDZ4R7 D701 Not used D702 Not used D703 Not used IC191 VOLTAGE REGULATOR PQ1LAX95MSPQ QSZBA0TSH053 IC192 VOLTAGE REGULATOR LD1117SC R NSZBA0TSS229 IC333 DIGITAL VID...

Страница 19: ...WF15L5 L3120UL 2005 06 25...

Отзывы: