SERVICE MANUAL 3Y18 CHASSIS Design and specifications are subject to change without prior notice.
Contents Safety Notice--------------------------------------------------------2 Technical specification--------------------------------------------3-8 Chassis Block Diagram--------------------------------------------9 IC Block Diagram -------------------------------------------------10-15 Transistor mark ----------------------------------------------------16 PCB Top/Bottom layer -------------------------------------------17-19 Service Adjustments ------------------------------------------- 20-24 Purity and
-3-
-4-
-5-
-6-
-7-
-8-
Chassis Block Diagram -9-
IC B lock D iagram IC 201 (LA7693*) -10PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.com.
IC B lock D iagram IC 702 & 802 (HEF 4052B) -11PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.com.
IC B lock D iagram IC500 (CQ0765) IC 301(LA7804* ) -12PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.com.
IC B lock D iagram IC 801 (LV1115) -13PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.com.
IC B lock D iagram IC 901 (LA42***) -14PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.com.
IC B lock D iagram IC 701(AN5832SA) -15PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.com.
Transistor Mark NPN PNP PNP L7809 INPUT B C E E C B E C C27 17 D2499 C18 15 E C B A1015 C21 20 C24 82 A966 E C B E C B NPN NPN PNP B B E C L7812 OUTPUT GND INPUT OUTPUT GND -16- L7805 INPUT OUTPUT GND
Service Adjustments -20-
Service Adjustments -21-
Service Adjustments -22-
Service Adjustments -23-
Service Adjustments -24-
Purity and Convergence Adjustment COLOR PURITY ADJUSTMENT (1) Before color purity adjustment,warm up the TV set over 15 minutes and fully degauss. (2) Receive pure white signal in AV status and set the TV receiver dynamic. (3) Go to factory mod MENU2. After write down the values of R-BIAS and B-BIAS, set the values of R-BIAS and B-BIAS zero. (4) Loosen the clamp screw of the deflection yoke and pull the deflection yoke towards color purity Magnetic loop.
Control Location CONTROL LOCATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
Input and Output Terminals INPUT AND OUTPUT TERMINALS (OPTION) VIDEO AND AUDIO INPUT/OUTPUT TERMINALS 1. Video / Audio input for playback for VCR. 2. Video / Audio output for TV program. *Please keep AC cord unplugged when connecting TV system.
Operation Instructions INPUT AND OUTPUT TERMINALS (OPTION) VIDEO AND AUDIO INPUT/OUTPUT TERMINALS 1. Video / Audio input for playback for VCR. 2. Video / Audio output for TV program. *Please keep AC cord unplugged when connecting TV system.
Operation Instructions INPUT AND OUTPUT TERMINALS (OPTION) VIDEO AND AUDIO INPUT/OUTPUT TERMINALS 1. Video / Audio input for playback for VCR. 2. Video / Audio output for TV program. *Please keep AC cord unplugged when connecting TV system.
Operation Instructions OPERATION INSTRUCTIONS Turn the TV set on, then power indicator will light up. Press the program up or down button on the TV set,or press the on/off button on the remote control.The picture will appear after a few seconds . (If tuned on) The program number is displayed on the top right-hand corner of the screen. MENU BUTTON 1.Press this button to select menu. PICTURE, SOUND, PRESET, TIME and SYSTEM can be selected cyclically.
Operation Instructions OPERATION INSTRUCTIONS Features menu FEATURES LANGUAGE ENGLISH COLOUR SYS AUTO C.C OFF PARENTAL CTRL ON CALENDAR GAME Timer menu TIMER TIME START TIME STOP TIME CH SWITCH SWITCH TO _ _:_ _ _ _:_ _ _ _:_ _ _ _:_ _ ___ Install menu INSTALL PROG NO SKIP RECEPTION FINE AFT AUTO STORE 01 ADD AIR ON 1. LANGUAGE You can change language menu in this item. 2. COLOUR SYS You can change present color system in this item. 3.C.C Set the CCD OFF or ON. 4.
Operation Instructions OPERATION INSTRUCTIONS SELECTING PROGRAM Use 0-9 digit buttons to call directly on the program number that you want. If you want to select a double digits program number , firstly press "- / - -" button, then input the two digits. Program number can also be changed by "PROGRAM DOWN" and "PROGRAM UP" buttons. Press "PROGRAM UP" button, program number will increase. Press "PROGRAM DOWN" button, program number will decrease.
Operation Instructions LOCATION OF CONTROL (REMOTE HANDSET UNIT) STAND BY BUTTON ( ) Press this button to turn the TV on/off. Press any Number Button or Program Up/Down Button, picture and sound will come on within a few seconds. 2 3 4 5 6 7 8 9 --/--- 0 AV/TV MUTE BUTTON ( ) Press once to mute the sound, press again to return to previously set sound level. SOUND SYSTEM BUTTON (SYS.) Press this button to select the correct sound system. 5.5M 4.5M 6.5M 6.0M PROG.+ VOL.- MENU VOL.
Operation Instructions LOCATION OF CONTROL (REMOTE HANDSET UNIT) VOLUME UP/DOWN BUTTONS (VOL.+/-) Press Volume Up/Down Buttons to adjust sound level. PERSONAL PRESETS BUTTON (P.P.) You can select DYNAMIC, MILD, COLORFUL, STANDARD and CUSTOM by pressing this button. RECALL BUTTON ( ) Press this button sequentially to recall for the program number, color system and sound system on the screen. SLEEP BUTTON ( ) This key is used to set the sleep timer in 15 minutes step up to two hours.
Operation Instructions BATTERY INSTALLATION (REMOTE CONTROL UNIT) 1. Remove the battery cover. 2. Insert the 2 UM4-AAA 1.5V batteries making sure the polarity (+ or -) of the batteries matches the polarity marks inside the unit. 3. Replace the battery cover. Replace with new batteries when the TV set begins to show the following symptoms: Operation is unsteady or erratic. Sometimes the TV set does not function with Remote Control Unit.
Mechanica l Disassemblies CABINETBACKREMOVAL CHASSISREMOVAL 1.Refert o Figure 1,remove7screws. 2.Pulloffcabine t back andremove. 1.Removecabinetback. 2.Dischargethepicturetubeanode(2ndanodelead)tothe dagcoating(picturetubegroundinglead). 3.DisconnectDegaussingcoilsocket(KE),Picturetubesocket, D eflectionyokeconnector(KDY),Speakerconnectors(KL andKR),and2ndanodelead. 4.Removechassiscompletelybyslidingitstraightback.
A B C D C101 1 50V 14 XS502 XS502 AGC 6 13 10u C601 1K R605 10u 75 AV-IN 10u C606 FU501 T2.5A 250V~ R501 2.2M 2 SDA * 8 7 6 5 4 3 2 1 1 2 3 TV AV2 GND C609 16V 1u 3 C504 4n7 REM Q601 C AV1 GND C508 560 1KV 1 9V AV2 GND * YUV L AV1 AV2 AV1 TV R VCC IC501 L502 L502 C607 10u/16V R608 470 C608 16V 1u 9 10 11 12 13 14 15 9V 16 C612 16V 10u YUV IC601 SDA C506 4n7 D501 D501 C505 C525 4n7 470pF 250V~ 1 3 4 R502 4.
