Service Manual - Free Schematic Diagram

Transcript

SERVICE MANUAL COLOUR TELEVISION Chassis No. GA-8S MODEL : 21ES251E 21ES253E 21ES353E In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used. FEATURES ¨ Multi 21 System, 100-CH Program Memory ¨ Full Auto Search System ¨ NTSC Colour Comb Filter ¨ CATV (Hyperband) Ready ¨ NTSC Colour Comb Filter Function ¨ High Contrast Picture (Black Strecth Circuit) ¨ White Temperature Select ¨ English Language OSD ¨ Blueback Function Noise Mute ¨ OFF Timer & Child Lock ¨ Hotel Mode & AV Mode (Movie/Music/News) ¨ Surround Sound Effect ¨ Rear AV-IN Terminal ¨ Rear AV-OUT Terminal ¨ Save Mode ¨ AV Stereo & Equalizer CONTENTS Page Page ¨SPECIFICATIONS ............................................. 2 ¨IMPORTANT SERVICE NOTES ........................ 2 ¨ADJUSTMENT PRECAUTIONS ........................ 3 ¨TROUBLE SHOOTING TABLE ....................... 16 ¨WAVEFORMS .................................................. 18 ¨SOLID STATE DEVICE BASE DIAGRAM ....... 19 ¨DESCRIPTION OF SCHEMATIC DIAGRAM .. 20 ¨ DIAGRAM: ¨MAIN BLOCK ........................................... 23 ¨MAIN SCHEMATIC ................................... 24 ¨REPLACEMENT PARTS LIST ¨DIAGRAM BLOCK CRT ............................. 21 ¨DIAGRAM SCHEMATIC CRT ..................... 22 WARNING The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user - serviceable parts inside. Refer servicing to qualified service personnel. SHARP CORPORATION 1 2-1 Specifications are subject to change without prior notice Cabinet material ..................................................................................................................................... All Plastics Dimensions ..................................................................................................................................... Width: 597mm Height: 468.5mm Depth: 341.5mm Weight(approx): 19.5 kg Aerial Input Impedance VHF/UHF .......................................................................................................................... 75 ohms Unbalanced Receiving System ................................................................................... PAL I, B/G, D/K & SECAM B/G, D/K, K1, & NTSC M Receiving Channel VHF-Channels ......................................................................................... E2(48.25MHz) thru E12(224.25MHz) C1(49.75MHz) thru C12(216.25 MHz) .S1(105.25MHz) thru S41(463.25HMz) UHF-Channels ..................................................................................... E21(471.25MHz) thru E69(855.25MHz) C13(471.25MHz) thru C57(863.25MHz) Speaker Size ......................................................................................................................12cm x 6cm Elliptic (2pcs) Voice Coil Impedance .............................................................................................................16 ohms at 400 Hz Power Input ..................................................................................................................... 110 ~ 240V AC 50/60 Hz Power Consumption ........................................................................................................................................ 88W Audio Power Output Rating ............................................................................................................. 3.0W(rms) x 2 Intermediate Frequencies Picture IF Carrier ................................................................................................................................. 38.9MHz Sound IF Carrier Frequency 6.5MHz ............................................................................................................................................. 32.4MHz 6.0MHz ............................................................................................................................................. 32.9MHz 5.5MHz ............................................................................................................................................. 33.4MHz Colour Sub-Carrier Frequency ........................................................................................................... 34.47MHz Convergence ................................................................................................................ Self Convergence System Focus ....................................................................................................................... Electro-Static Focusing Sweep Deflection ......................................................................................................................................... Magnetic SPECIFICATIONS Picture tube in this receiver employs integral implosion protection. Replace with tube of the same type number for continued safety . Do not lift picture tube by the neck. Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage completely. 2-2 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the receiver . 2. Inspect all protective devices such as non-metallic control knobs, insulating fishpapers, cabinet backs, adjustment and compartment covers or shields, isolation resistor- capacity networks, mechanical insulators etc. Before returning the receiver to the user, perform the following safety Checks. BEFORE RETURNING THE RECEIVER 1. When repairing the circuit, be sure not to increase the high voltage to more than 26.0kV (at beam 0 m A) for the set. 2. To keep the set in a normal operation , be sure to make it function on 23.0kV ±1.0kV (at beam 1000 m A) in the case of the set. The set has been factory - Adjusted to the abovementioned high voltage. \ If there is a possibility that the high voltage fluctuates as a result of the repairs, never forget to check for such high voltage after the work. 3. Do not substitute a picture tube with unauthorizerd types and/or brands which may cause excess X-ray radiation. This receiver is designed so that any X-Ray radiation is kept to an absolute Minimum. Since certain malfunctions or servicing may produce potentially hazardous radiation with prolonged exposure at close range, the following precautions should be observed: X-RAY 1. 2. 3. 4. When servicing the high voltage system, remove static charge from it by Connecting a 10K ohm Resistor in series with an insulated wire(such as a test probe) between picture tube dag and 2nd anode lead. (AC line cord should be disconnected from AC outlet.) SERVICE OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE Maintenance and repair of this receiver should be done by qualified service personnel only. IMPORTANT SERVICE NOTES 3. 2. 1. 3-1 For reference please check with memory map RH-IXC688WJZZQ (see attachment) Precaution: If haven't done this initialization, it may possibly generate excessive Beam current. (3) Make sure the data need modification or not (Initial data). (2) The initial data are preset as listed in page 6~10. (1) During POWER OFF (AC OFF), switch on service key (by connecting MCU Pin 5 to ground ) after then raster follow appeared by AC ON.onInitial the screen. values are Initial automatically values are automatically preset only when preset, a new onlyEEPROM when is used. (Judge with the first 4 bytes ). Factory Presetting. (6) Press the SERVICE key again, it will switch to the NORMAL mode position, and the microprocessor is out of the SERVICE mode. (5) In Check mode the data cannot be changed. (4) Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified. Please wait approximately 200 msec for data storage in EEPROM before select to another mode. (3) Press the CH DOWN / UP key on the remote controller to select the item in Adjustment mode, Setting mode, Option mode or NVM Edit mode. (2) Press the MENU key on the remote controller to get ready to select the mode (Adjustment mode, Setting mode, Check mode, Option mode and NVM Edit mode ) one by one. (1) Press SERVICE key on the remote controller to set the TV set to SERVICE mode position, and the microprocessor is in input mode. (Adjustment through the I2C bus control). Service Mode also can be reached by by connecting MCU Pin 5 to ground. Setting the service mode by the microprocessor. CAUTION : MAKE SURE TV SET IN "NORMAL CONDITION" BEFORE SWITCH TO SERVICE MODE FOR ADJUSTMENT. This model's setting are adjusted in two different ways: through the I2C bus control and in the conventional analog manner. The adjustments via the I2C bus control include preset-only items and variable data. ADJUSTMENT PRECAUTIONS NO *** 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 ADJUSTMENT ITEM BUS SET UP RF-AGC FOCUS ADJ H-VCO ADJ VIF-VCO ADJ S-TRAP ADJ V-SHIFT V-SIZE V-LINEARITY VS CORRECTION H-SHIFT H-SIZE PARABOLA UPPER CORNER LOWER CORNER BOW-ADJ ANGLE ADJ TRAPEZIUM SCREEN WHITE BALANCE SUB-BRIGHTNESS SUB-CONTRAST BEAM CURRENT CHECK SUB-COLOR SUB-TINT SECAM-OFFSET BEAM PROTECTOR CHECK HV PROTECTOR CHECK OTHER PROTECTOR CHECK AV OUT CHECK AV IN CHECK COMPONENT IN CHECK SUB-WOOFER CHECK CONTRAST CONTROL CHECK COLOR CONTROL CHECK BRIGHTNESS CONTROL CHECK TINT CONTROL CHECK SHARPNESS CONTROL CHECK CH DISPLAY COLOR CHECK SURROUND CHECK BALANCE CHECK EQUALIZER CHECK COLOR TEMP CHECK NORMAL DISPLAY CHECK COLOUR SYSTEM CHECK SOUND SYSTEM CHECK NOISE MUTE CHECK OSD LANGUAGE QUANTITY CHECK SHOCK TEST CHECK 3-2 ALL MODELS EFFECTIVE MODEL REVISION ***Below are the adjustment items that should be done, PLS FOLLOW THE PROCEDURE. Otherwise some adjustment items will not be accurate. ADJUSTMENT ITEM 80 40 C0 20 A0 60 E0 10 50 E4 E4 75 F5 C2 8D D6 0D 36 46 C6 26 24 54 74 66 E6 C4 4C CC 2C AC EC C1 CA 81 4-1 POS 1 POS 2 POS 3 POS 4 POS 5 POS 6 POS 7 POS 8 POS 0 FLASHBACK FLASHBACK WHITE TEMP UP WHITE TEMP DOWN TUNE DOWN SHARPNESS DOWN BALANCE LEFT SHARPNESS UP BALANCE RIGHT TREBLE UP TREBLE DOWN BASS UP COLOUR UP BRIGHTNESS DOWN TINT DOWN SURROUND UP SURROUND DOWN CONTRAST DOWN PICTURE HOLD TEXT CANCEL SIZE The flow of Mode list as following, * Direct Key-in Mode for Service Items in Service Mode RC CODE (HEX) R/C KEY NAME ALL MODELS MODELS R-C UP (IN SERVICE MODE V00) G-C UP (IN SERVICE MODE V00) B-C UP (IN SERVICE MODE V00) R-C DOWN (IN SERVICE MODE V00) G-C DOWN (IN SERVICE MODE V00) B-C DOWN (IN SERVICE MODE V00) R-D UP (IN SERVICE MODE V00) B-D UP (IN SERVICE MODE V00) B-D DOWN (IN SERVICE MODE V00) R-D DOWN (IN SERVICE MODE V00) Y-MUTE (BESIDES OF SERVICE MODE V00) RF-AGC (V01) VIF-VC0 (V02) H-VCO (V03) SUB-CON (V04) SUB-COL (V05) SUB-BRIGHT (V06) SUB-TINT (V07) SUB-SHP-PRE (V08) SUB-COL-YUV (V09) SUB-TINT-YUV (V10) V-SIZE (V11), V-SIZE60 (V16) V-SHIFT (V12), V-SHIFT60 (V17) H-SHIFT (V13), H-SHIFT60 (V18) SCM-BR (V14) SCM-BB (V15) SUB-VOL S-TRAP-BG (V19) S-TRAP-I (V20) S-TRAP-DK (V21) S-TRAP-M (V22) S-TRAP-574 (V23) AUTO ADJ FOR V01, V02, V03,V19, V20, V21, V22, V23 T-SET SERVICE MODE SERVICE-ITEM USER DATA IN SERVICE MODE . While SERVICE mode ON, EEPROM DATA will switch to the service data. Also, once SERVICE mode OFF, EEPROM will switch back to previous USER DATA. . In the service mode, the user data establish as below, USER DATA CONTRAST MAX 60 COLOUR CENT 0 BRIGHTNESS CENT 0 TINT CENT 0 SHARPNESS CENT 0 WHITE TEMP STANDARD S-VOLUME MIN SURROUND OFF BALANCE CENT 0 AVL *2 BLUE BACK OFF C SYSTEM AUTO S SYSTEM *1 EQUALIZER *2 ANTENNA BOOSTER *1 *1: For each CH, data is same as before switch to Service mode. *2: Data is same as before switch to Serice mode. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 CH-No B/G B/G B/G B/G B/G B/G B/G 294.25 463.25 647.25 663.25 679.25 174.95 175.55 4-2 B/G B/G D/K B/G B/G D/K D/K B/G M B/G B/G B/G I B/G B/G B/G B/G M D/K B/G I B/G B/G I B/G M M M M M M M M M B/G B/G 48.25 62.25 77.25 175.25 182.25 183.25 191.25 196.25 199.25 210.25 224.25 471.25 487.25 503.25 575.25 583.25 599.25 621.25 639.25 703.25 735.25 767.25 815.25 855.25 855.25 55.25 83.25 183.25 193.25 217.25 471.25 477.25 693.25 885.25 112.25 168.25 MCL1 (HEX AE) Fv (MHz) Sound Sys INITIAL 3 : All Channel Sound System are set to B/G 2.) After set the MCL , please set the INITIAL SETTING for each models. 1.) Please set the MCL to MCL1 as below: MODEL INDONESIA INITIAL 3 BOOSTER LAST POWER LAST TV/AV MODE LAST POSITION FLASHBACK CHANNEL 1/2 DIGIT ENTRY VOLUME BLUE BACK CHILD LOCK OFF TIMER PASSWORD AFT COLOR SYSTEM SKIP FAVORITE PROGRAM A FAVORITE PROGRAM B FAVORITE PROGRAM C FAVORITE PROGRAM D AV MODE CONTRAST COLOR BRIGHTNESS TINT SHARPNESS PICTURE NR WHITE TEMP SURROUND AVL BALANCE SAVE MODE ITEMS 1: ENGLISH 5-1 MAGNETIC FIELD(V, H) nT -20,000 40,000 LANG. ENGLISH ALL MODELS MODELS BACKGROUND 12300°K FACTORY SETTING BY MODEL (Reference: Geomagnetism Adjustment) LANGUAGE SOUND SYSTEM ENGLISH B/G ALL CH OFF ON TV MODE CH 1 CH 1 2 DIGIT ENTRY 0 (Min) OFF OFF --:-0000 ALL CH ON ALL CH AUTO ALL CH OFF CH 10 CH 20 CH 30 CH 40 MOVIE 60 +3 0 0(CENTER) +3 OFF 0 OFF ON 0(CENTER) OFF DATA SETTING (1) The following default data has been factory-set for the E2PROM follow by INITIAL DATA selected. SHIPPING SETTING & CHECKING S-SYS B/G LANG QTY 1 DATA 7CH 76H ADDRESS DATA 78H 02H: 78H 03H: OSD V00 V00 V00 V00 V00 V01 V02 V03 V04 V05 V06 V07 V08 V09 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 V23 V24 V25 V26 V27 V28 V29 V30 V31 V32 V33 V34 V35 V36 V37 V38 V39 V40 V41 V42 V43 V44 V45 EEPROM ITEMS R-DRI B-DRI R-CUT G-CUT B-CUT RF-AGC VIF-VCO H-VCO SUB-CON SUB-COLOR SUB-BRIGHT SUB-TINT SUB-SHP PRE SUB-COLOR-YUV SUB-TINT-YUV V-SIZE V-SHIFT H-SHIFT SCM-BR SCM-BB V-SIZE60 V-SHIFT60 H-SHIFT60 S-TRAP(BG) S-TRAP(I) S-TRAP(DK) S-TRAP(M) S-TRAP(574) TEST PATTERN S-TRAP ADJ Start S-TRAP ADJ Stop VS-CORRECT VS-CORRECT60 V LINEARITY V LINEARITY60 SUB-SHP OV PARABOLA PARABOLA60 TRAPEZIUM TRAPEZIUM60 H-SIZE H-SIZE60 UPPER-CORNER UPPER-CORNER60 LOWER-CORNER LOWER-CORNER60 ANGLE ADJ ANGLE ADJ60 BOW ADJ BOW ADJ60 Adjustment Mode (First Stage) 5-2 0…127 0…127 0…255 0…255 0…255 0…127 0…63 0…7 0…127 0…127 0…255 0…127 0…63 0…127 0…127 0…63 0…7 0…31 0…63 0…63 -31…0…+31 -7…0…+7 -15…0…+15 0…127 0…127 0…127 0…127 0…127 0…15 0…127 0…127 0…63 -13…+13 0…63 -13…+13 0…63 0…63 -13…+13 0…63 -13…+13 0…63 -13…+13 0…63 -13…+13 0…63 -13…+13 0…63 -13…+13 0…63 -13…+13 DATA LENGTH 63 63 127 127 127 50 31 3 100 63 127 63 37 49 61 38 3 9 37 22 +6 -2 +2 64 64 64 64 64 0 25 95 38 -9 36 +3 26 32 0 32 0 32 0 32 0 32 0 32 0 32 0 INITIAL DATA 63 63 127 127 127 50 31 3 100 63 127 63 28 49 61 38 3 9 37 22 +6 -2 +2 64 64 64 64 64 0 25 95 38 -9 36 +3 26 32 0 32 0 32 0 32 0 32 0 32 0 32 0 SETTING DATA 21DXS200 ADJ ADJ ADJ ADJ ADJ AUTO AUTO AUTO ADJ ADJ ADJ ADJ *FIX FIX FIX ADJ ADJ ADJ ADJ ADJ FIX FIX FIX AUTO AUTO AUTO AUTO AUTO FIX FIX FIX *FIX FIX *FIX FIX FIX ADJ FIX ADJ FIX ADJ FIX ADJ FIX ADJ FIX ADJ FIX ADJ FIX FIX/ADJ/AUTO ADJUST IF NECESS ADJUST IF NECESS PLS REFER ADJ ITE SCREEN AND WHIT BALANCE REMARK *** There are four stages of service mode data. First stage data from V00~V45 (Adjustment Mode). To go into second stage of service mode data, press MENU key.Second stage data from F01~F170(Setting Mode). To go into third stage of service mode data, press MENU key.Third stage data is Check Mode. To go into fourth stage of service mode data, press MENU key.Fourth stage data from O01~O35 (Option Mode). ADDRESS 00H: 01H: **AFTER INITIALIZED THE EEPROM (REFER TO FACTORY PRESETTING), READ DATA FROM EEPROM ADDRESS 00H ~ 03H,AND COMPARE TO THE LIST BELOW, IF DIFFERENT, INITIALIZE THE EEPROM. OSD F01 F02 F03 F04 F05 F06 F07 F08 F09 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 F27 F28 F29 F30 F31 F32 F33 F34 F35 F36 F37 F38 F39 F40 F41 F42 F43 F44 F45 F46 EEPROM ITEMS ABCL-Gain VIF-G YDL YDL-P YDL-S YDL-N4 YDL-N3 YDL-AV YDL-AV-P YDL-AV-S YDL-AV-N4 YDL-AV-N3 YDL-YUV COL-AV COL-P COL-S COL-N4 COL-N3 COL-ADJ SHP-PRE-AV SHP-PRE-YUV SHP-PRE-P SHP-PRE-S SHP-PRE-N4 SHP-PRE-N3 SHP-OV-AV SHP-OV-YUV SHP-OV-P SHP-OV-S SHP-OV-N4 SHP-OV-N3 TINT-AV TINT-ADJ R-R B-R R-B B-B CTRAP-ADJ CTRAP-ADJ-P CTRAP-ADJ-S CTRAP-ADJ-N4 CTRAP-ADJ-N3 AFC2 GAIN GAMMA BS-D/C BS-GAIN Setting Mode (Second Stage) 6-1 0 (Lo)/ 1(Hi) 0…7 0…7 0…7 0…7 0…7 0…7 0…7 0…7 0…7 0…7 0…7 0…7 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -31…0…+31 -63…0…+63 -63…0…+63 -63…0…+63 -63…0…+63 -63…0…+63 -63…0…+63 0…3 0…3 0…3 0…3 0…3 0…3 0…3 0…15 0…2 0 7 5 5 6 5 5 5 5 5 5 5 5 -4 +12 +9 +8 +12 +8 +1 +3 +7 +2 +7 +7 -5 +13 +7 +2 +7 +7 -5 +3 +5 -19 -2 +8 2 2 2 2 1 1 3 4 0 DATA LENGTH INITIAL DATA 0 7 5 5 6 5 5 5 5 5 5 5 5 -4 +12 +9 +8 +12 +8 +1 +3 +7 +2 +7 +7 -5 +13 +7 +2 +7 +7 -5 +3 +5 -19 -2 +8 2 2 2 2 1 1 3 4 0 SETTING DATA 21DXS200 FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX/ADJ/AUTO F48 F49 F50 F51 F52 F53 F54 F55 F56 F57 F58 F59 F60 F61 F62 F63 F64 F65 F66 F67 F68 F69 F70 F71 F72 F73 F74 F75 F76 F77 F78 F79 F80 F81 F82 AVL LEVEL AUTO-SCM-KIL-AV-YUV AFC1-Gain-TV AFC1-Gain-AV AFC1-Gain-YUV OSD LEVEL Take-Off-TV Take-Off-AV-YUV C-Angle AC-Fail-WO-Bright Forced-SCM-KIL-TV Forced-SCM-KIL-AV-YUV V-Demute-Delay S-Demute-Delay MER MEL1 MEL2 MEL3 MEL4 MEL5 MEL6 F47 SL-TV SL-AV SL-YUV AS/FBP-TV AS/FBP-AV AS/FBP-YUV VDL UDL AUTO-SCM-KIL-TV SECAM-BGP OSD-POS-V50 OSD-POS-V60 OSD-POS-H CP OM-DET 6-2 0 (BPF)/ 1(TOF) 0 (BPF)/ 1(TOF) 0 (103)/ 1(95) 0…255 0…3 0…3 0…255 0…255 0…255 0…255 0…255 0…255 0…255 0…255 0…255 0 : 10% 1 : 30% 2 : 50% 3 : 70% 4 : 90% 0 (disable)/ 1(enable) 0…7 0…7 0…7 0…3 0…3 0…3 0…3 0…3 0…3 0…3 1…55 1…50 0…127 0/1 0,0 : 600mVrms 0,1 : 450mVrms 1,0 : 375mVrms 1,1 : 300mVrms 0…3 0…3 0…3 0…3 1 0 0 255 2 2 25 40 70 150 156 163 165 170 180 3 1 0 3 3 1 1 2 3 3 3 3 0 0 1 0 42 35 15 1 0 1 0 0 255 2 2 25 40 70 150 156 163 165 170 180 3 1 0 3 3 3 1 2 3 3 3 3 0 0 1 0 42 35 19 1 0 FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX *FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX *FIX FIX FIX F83 F84 F85 F86 F87 F88 F89 F90 F91 F92 F93 F94 F95 F96 F97 F98 F99 F100 F101 F102 F103 F104 F105 F106 F107 F108 F109 F110 F111 F112 F113 F114 F115 F116 F117 F118 F119 F120 F121 F122 F123 F124 F125 F126 F127 F128 F129 F130 F131 F132 F133 S-St-Point S-Sp-Point S-Step Pow-Storage S-B-BASS S-B-TREB S-BASS S-TREB SIF AGC GAIN DOWN SIF BPF WIDE HIGH SIF BPF WIDE LOW APER-FREQ R-DRI YUV OFFSET B-DRI YUV OFFSET R-CUT YUV OFFSET G-CUT YUV OFFSET B-CUT YUV OFFSET CON YUV OFFSET BRT YUV OFFSET SHP ANT-ONII OFFSET WAIT MD TIME Contrast OFFSET Bright OFFSET CR-PEDESTEL-ADJ CB-PEDESTEL-ADJ R MTX UP MATRIX ADJ AV2 Brightness OFFSET BASS OFFSET MID1 OFFSET MID2 OFFSET MID3 OFFSET TREBLE OFFSET AS-SPEED (DOWN/UP) SIF-BPF-WIDE SIF-BPF-WIDE-574 CONT NEWS CONT MUSIC CONT MOVIE BRIGHT NEWS BRIGHT MUSIC BRIGHT MOVIE COL NEWS COL MUSIC COL MOVIE SHARP NEWS SHARP MUSIC SHARP MOVIE SURR NEWS SURR MUSIC SURR MOVIE 7-1 0..60 0..60 0..60 -30..0..+30 -30..0..+30 -30..0..+30 -30..0..+30 -30..0..+30 -30..0..+30 -30..0..+30 -30..0..+30 -30..0..+30 0(OFF) / 1(ONI) / 2(ONII) 0(OFF) / 1(ONI) / 2(ONII) 0(OFF) / 1(ONI) / 2(ONII) 0…7 0…7 0…60 0…60 0…60 0 (disable)/ 1(enable) 0 … +10 0 … +10 0 … +10 0 … +10 0/1 0/1 0/1 0/1 -63…0…+63 -63…0…+63 -63…0…+63 -63…0…+63 -63…0…+63 -63…0…+63 -63…0…+63 -31…0…+31 0..2 -63…0…+63 -63…0…+63 0…15 0…15 0/1 0…3 -15…0…+15 -4…0…+4 -4 … +4 -4 … +4 -4 … +4 -4…0…+4 0…3 0 0 0 55 60 60 0 0 0 0 0 +3 0 0 +3 0 3 10 10 10 10 1 0 0 0 0 0 -12 -5 0 +2 +4 0 2 0 0 5 5 1 0 -4 0 0 0 -2 -1 0 1 21 60 7 0 0 0 55 60 60 0 0 0 0 0 +3 0 0 +3 0 3 10 10 10 10 1 0 0 0 0 0 -12 -5 0 +2 +4 -20 2 -16 0 5 5 1 0 -4 0 -1 0 0 +1 0 1 21 60 7 FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX *FIX FIX *FIX FIX FIX FIX FIX FIX FIX FIX *FIX FIX *FIX *FIX FIX FIX FIX FIX FIX F165 F166 F167 F168 F169 F170 FRONT-DET SURROUND AUTO SCM-BR OFFSET AUTO SCM-BB OFFSET GLARE/SAVE MODE OFFSET H-STOP DELAY 7-2 F134 F135 F136 F137 F138 F139 F140 F141 F142 F143 F144 F145 F146 F147 F148 F149 F150 F151 F152 F153 F154 F155 F156 F157 F158 F159 F160 F161 F162 F163 F164 EQ BASS NEWS EQ BASS MUSIC EQ BASS MOVIE EQ MID1 NEWS EQ MID1 MUSIC EQ MID1 MOVIE EQ MID2 NEWS EQ MID2 MUSIC EQ MID2 MOVIE EQ MID3 NEWS EQ MID3 MUSIC EQ MID3 MOVIE EQ TRE NEWS EQ TRE MUSIC EQ TRE MOVIE S-BOOST NEWS S-BOOST MUSIC S-BOOST MOVIE R-R-C B-R-C R-B-C B-B-C TRE OFFSET SUR ONII VD3 / VD2 / VD1-TV VD3 / VD2 / VD1-AV-YUV CORNER UP-LOW ENABLE BOW/ANGLE ENABLE SHP-NR-OFFSET RGB MUTE TIME H-BLK LEFT H-BLK RIGHT -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 -10..0..+10 0(OFF) / 1(ON) 0(OFF) / 1(ON) 0(OFF) / 1(ON) -63…0…+63 -63…0…+63 -63…0…+63 -63…0…+63 -7 ~ 0 +7 0…7 0…7 0/1 0(OFF)/1(ON) -15…0 0…8 0…7 0…7 0(no Front-det) 1(Front-det) 0(1-CHIP) 1(SHAKIT) -31…0…+31 -31…0…+31 0…63 0 : 5ms 1 : 10ms 2 : 15ms 3 : 20ms 1 0 0 30 0 0 -1 +1 +1 +1 0 -1 0 -3 -1 +1 0 +1 -1 +5 +3 0 1 1 +4 -5 -1 +6 +1 1 3 1 1 0 1 0 3 1 0 0 30 0 0 0 +4 +4 0 -1 -2 +2 -3 -1 +1 -2 -2 0 +2 +1 0 1 1 +4 -5 -1 +6 +1 1 3 1 1 0 1 0 3 FIX FIX FIX FIX FIX FIX *FIX *FIX *FIX *FIX *FIX *FIX *FIX FIX FIX FIX *FIX *FIX *FIX *FIX *FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX FIX COL-SYSTEM Force-Col S-SYS AV YUV S-CTRL BIL LANG SERCH-SP R/C-MENU LED-CONT S-BOOSTER VOL CURVE **TUNER BAND WHITE BACK BOOSTER 250 CHANNEL O05 O06 O07 O08 O09 O10 O11 O12 O13 O14 O15 O16 O17 O18 O19 O20 O21 Option Mode (Fourth stage) Data OPTION FUNCTION O01 ***HTL O02 ***HTL-POS O03 ***HTL-VOL O04 HTL-MENU KEY 8-1 0 : without SOUND-MENU 1 : TONE 2 : EQUALIZER Dis/Ena */*/A/M/R/F/*/E */V/*/M/*/F/C/E */*/*/*/*/*/T/E 350/450/550/650/750 Ena/Dis One LED/ Two LEDs 0: No S-BOOSTER 1: Using DAC IC 2: Using PWM port Dis/Ena Refer to Table 1 Dis/Ena Dis/Ena 0 : 100 channels(8k EEPROM) 1 : 250 channels(16k EEPROM) 0 : without COMPONENT 1 : COMPONENT (share with AV1) 2 : COMPONENT (individual) Description OFF/ON Pos-No,Nil Vol-Lvl, Nil Dis/Ena MENU key in HTL mode 0: PAL only 1: 18-system 2: 21-system Dis/Ena M/DK/I/BG 0: No AV 1: AV 2: AV1/AV2 0/1 0/1 0/1 0/1 0/1 0…2 0/1 1…255 1…255 1…255 1…5 0/1 0/1 0…2 0…2 0…2 0/1 1…15 0…2 0 0 0 1 0 0 0 61 87 3 3 0 0 2 2 2 0 15 2 Range Default Data 0/1 0 0…99,--0…60,--0/1 1 0 1 0 0 1 0 5 0 0 1 0 2 1 2 0 15 2 Setting data 21DXS200 0 --1 0 : fix to 0 1 : fix to 1 2 : AVL in SOUND MENU 0 : ALPS LNA TUNER 1 : MATSUSHITA Set items to default for NORMAL KEY 0 : Picture and Sound 1 : Picture only AV MODE Dis/Ena MP-IN Dis/Ena VIRGIN-MODE Dis/Ena 0 : 3 modes WHITE-TEMP 1 : 5 modes LK MENU Dis/Ena 0 : CH △/▽, VOL+/ARROW-KEY 1 : /, /º% 0 : 7-bit volume table VOL-TABLE 1 : 8-bit volume table 0: No GLARE/SAVE MODE GLARE/SAVE MODE 1: GLARE MODE 2: SAVE MODE LANGUAGE 0 : 5-language(E/M/F/R/A) PACKAGE 1 : Vietnam(E/M/F/C/V) 0 : (-105~0) contrast table CONTRAST TABLE 1 : (-60~0) contrast table 2: (-30 ~ 0) contrast table BRIGHTNESS 0: (-60 ~ +60) brightness table TABLE 1: (-30 ~ +30) brightness table AVL 0/1 0…2 0/1 0…2 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0…2 0 0 0 1 0 1 0 0 1 1 0 0 0 2 41.10MHz ~ 122.10MHz 122.15MHz ~ 143.10MHz 143.15MHz ~ 362.10MHz 362.15MHz ~ 426.10MHz 426.15MHz ~ 871.10MHz * *TUNER BAND P-Freq 8-2 UHF (1000) TABLE 1 VHF-H (0010) BAND TUNER BAND = 0 (same as GA6) VHF-L (0001) UHF (1000) TUNER BAND = 1 VHF-L (0001) VHF-H (0010) *** HOTEL MODE OPERATION OF HOTEL MODE: WHEN CHANGE SERVICE DATA O01 TO 1, HOTEL MODE IS ON WHEN HOTEL MODE IS ON, 1. Max volume data is determined by option setting HTL-VOL (O03) 2. Channel position after POWER ON is determined by option setting HOTEL-POS (O02) (if option setting HOTEL-POS is not set, processing is according to last position data). 3. User data updates of EEPROM regarding the video and audio control is not allowed. 4. Preset mode is disable. 5. CH SETTING menu is not available. O35 O34 O33 O32 O31 O30 O29 O28 O25 O26 O27 O24 O23 O22 0 0 0 2 0 1 0 0 1 0 0 0 1 2 NO 1 + BIAS BOX TP201 TV SET Bias Box : about 4.5V Fig. 3-1 (3) Call "V01" mode in service mode. Adjust the "V01" bus data to obtain the Tuner output pin drop 0.1~1.0V below maximum voltage. (4) Change the antenna input signal to *Note 1, and make sure there is no noise. (5)Turn up the input signal to 90 ~ 95 dBµV to be sure that there is no cross modulation beat. 0.1V ADJUSTMENT CONDITION / PROCEDURE (1) Receive "PAL COLOR BAR" signal. Signal Strength: refer to *Note 1 (2) Connect the oscilloscope to TP201 (Tuner's AGC Terminal) as shown in figure 3-1. +OSCILLOSCOPE 9-1 ADJUSTMENT POINT ADJUSTMENT CONDITION / PROCEDURE FOCUS (1) Receive the "Monoscope Pattern" signal. (2) Press RESET to set Picture NORMAL condition. (3) Adjust the focus control to get the best focusing. FOCUS ADJUSTMENT (AUTO & MANUAL ADJ) ADJUSTMENT (I2C BUS CONTROL) TAKE OVER POINT NO ADJUSTMENT POINT 1 RF-AGC PIF ADJUSTMENT CHECKING Signal Strength 63 ~ 67dBµV Antenna Input Signal 9-2 Focusing Point (middle of center and edge of monoscope pattern) WAVEFORM OR REMARKS 21DXS200 56 ± 1dBµV (75 open) Model *Note 1 * for Auto ADJ 1)Receive "PAL COLOR BAR" signal signal strength : refer to *Note 1 1) Go to service mode. 2) Go to service data V01, press R/C to operate auto key (Hex C1) and confirm the 'OK' display on the screen. 3) If appear NG, increase data some step and pls repeat step 2. 4) Proceed step 4 & 5 in manual mode. WAVEFORM OR OTHERS ADJUSTMENT PRECAUTION : Make sure TV Set is in "NORMAL CONDITION" before switch to Service Mode for Adjustment. H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT NO ADJUSTMENT POINT 1 H-VCO ADJ (I2C BUS CONTROL) (AUTO & MANUAL ADJ) ADJUSTMENT CONDITION / PROCEDURE (Manual Adj) (1) In No signal (RASTER) condition. (2) Go to service mode, choose service data V03. (3) Connect oscilloscope to IC801 pin13 (H-OUT), adj V03 until freq become 15.625 ± 0.15 KHz. WAVEFORM OR OTHERS (Auto Adj) (1) In No signal (RASTER) condition. (2) Go to service mode. (3) Choose service data V03, by pressing R/C Auto (Hex C1) key, OSD will appear "OK" at screen. (4) If appear "NG" pls repeat step 3. 2 VIF-VCO ADJ (I2C BUS CONTROL) (AUTO & MANUAL ADJ) (Manual Adj) (1) In No signal (RASTER) condition. (2) Go to service mode, choose service data V02. (3) Connect oscilloscope to IC801 pin7 (AFT), adj V02 until voltage become 2.5 ± 1 V. *NOTE: This adjustment must be done after aging at least 3 minutes. (Auto Adj) (1) In No signal (RASTER) condition. (2) Go to service mode, choose service data V02. (3) Press the R/C Auto (Hex C1) key, OSD will appear "OK" at screen. (4) If appear "NG" pls repeat step 3. 3 S-TRAP fo ADJ (I2C BUS CONTROL) (AUTO & MANUAL ADJ) (Manual ADJ) (1) In No signal (RASTER) condition. (2) Go to service mode, choose service data V20. (3) Connect oscilloscope to TP 801, adj V20 until voltage become Min (below 5 V). (4) After that pls adj service data V19& V23 same as "V20", V21 to "V20+ 1", V22 to "V20-2". (Auto Adj) (1) In No signal (RASTER) condition. (2) Go to service mode, choose service data V20 (S-TRAP I). (3) Press the R/C Auto (Hex C1) key, OSD will appear "OK" at screen. (4) If appear "NG" pls repeat step 3. HORIZONTAL ,VERTICAL,DEFLECTION LOOP ADJUSTMENT (1) NO 1 2 ADJUSTMENT CONDITION / PROCEDURE V-SHIFT (1) Receive Monoscope Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V12. (3) Adjust V12 to align the center of the screen to the geometric center of CRT. Note: B line (Monoscope middle line) must same or nearest higher position to the A mark (Tube middle mark),refer to the attach drawing. ADJUSTMENT POINT Figure A OK V-SIZE (1) Receive Monoscope Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V11. (to be done after V-shift adj) (3) Adjust V11 bus data until the overscan become 10 ± 1.5 %. Caution 1: Pls aging TV more than 10 minutes before adjustment 3 V-LINEARITY (1) Receive Monoscope Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V29. (3 )Already preset. (Adjust this unless the linearity is not achieved.) 4 VS CORRECTION (1) Receive Monoscope Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V27. (3 )Already preset. (Adjust this unless the linearity is not achieved.) 5 H-SHIFT (1) Receive Monoscope Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V13. (3) Adjust the V13 bus data to have a balance position to spec of A=B (as attach drawing). (4) If cannot make it to A=B, adjust from the best point so that A slightly smaller than B. 6 H-SIZE (1) Receive Monoscope Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V36 (3) Adjust V36 bus data until the overscan becomes 10 ± 1.5 %. 7 PARABOLA (1) Receive CrossHatch Pattern Signal (PAL 50Hz). (I2C BUS CONTROL) (2) Choose the service data V32 Adjust the 2nd vertical line from the right end of the crosshatch pattern so that the middle 4 blocks are straight. (3) Make sure both left / right of 2nd vertical line at optimum point 10 A WAVEFORM OR OTHERS B OK NG B HORIZONTAL ,VERTICAL,DEFLECTION LOOP ADJUSTMENT (2) NO 8 ADJUSTMENT CONDITION / PROCEDURE UPPER CORNER (1) Receive CrossHatch Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V38 (3) Adjust the 2nd upper vertical line from the right end of the crosshatch pattern so that the upper line are straight. (4) Make sure both left / right of 2nd vertical line at optimum point 9 LOWER CORNER (1) Receive CrossHatch Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V40 (3) Adjust the 2nd lower vertical line from the right end of the crosshatch pattern so that the bottom line are straight. (4) Make sure both left / right of 2nd vertical line at optimum point 10 BOW-ADJ (1) Receive CrossHatch Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V44 BOW ADJ (3) Adjust the 2nd vertical line from the end of the crosshatch pattern until line is straight WAVEFORM OR OTHERS ADJUSTMENT POINT H-BOW 11 ANGLE ADJ (1) Receive CrossHatch Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V42 (3) Adjust the 2nd vertical line from the end of the crosshatch pattern line is straight (4) Make sure both left / right of 2nd vertical line at optimum point 12 TRAPEZIUM (1) Receive CrossHatch Pattern Signal (PAL 50 Hz). (I2C BUS CONTROL) (2) Choose the service data V34 (3) Adjust the 2nd vertical line from the right end of the crosshatch pattern so that the D1 (center area of the second vertical line - edge of screen) and D2 (top area of the second vertical line - edge of screen) are same. (4) Make sure both left / right of 2nd vertical line at optimum point 13 FINAL INSPECTION OF (1) Receive CrossHatch Pattern Signal (PAL 50Hz). ADJUSTMENT (2) Please make sure picture distortion (overall picture quality) must be balance at optimum point TOP / BOTTOM at LEFT / RIGHT corner. (3) If NG, please RE-ADJUST follow step 7 to 13 or adjust at NG position to get best picture quality A1 D2 D2 D1 D1 A2 D1 A1 B1 B2 D2 C1 C2 OVERALL PICTURE QUALITY MUST BE BALANCE AT OPTIMUM POINT ( LEFT & RIGHT ) 11 A1 ~~ A2 B1 ~~ B2 C1 ~~ C2 D1 = D2 (5)Turn the screen VR of FBT so that cut-off line just disappear and use R/C by pressing key S-Mute (Hex E8) to disable the Y-mute & V-cut so that picture appear in normal mode. (4) Adjust the Screen so that cut-off line appear in low bright, then judge that whether the cut-off line appear in Red or Green or Blue color, in this condition between R-C & G-C & B-C, fix the data of the color appear in cut-off line and adj the other two cut-off data (Note 1) so that cut-off line color become white. (3) By pressing R/C key S-Mute (Hex E8), R-D auto switch to 63, B-D auto switch to 63, R-C auto switch to 127, G-C auto switch to 127, B-C auto switch to 127, Sub-brightness V06 auto switch to 127. Y-mute & Vertical off, screen will be in vertical cut-off condition (2) Go to service mode, then select V00. ADJUSTMENT CONDITION / PROCEDURE (1) In window pattern signal condition X : 0.272 , Y : 0.275 12-1 (In Window Pattern Signal) (2) DARK WHITE (LOW BEAM) Let the gun point at Dark White position, if the color temperature data shift away from the data adjusted in step 1, adjust R-C, G-C & B-C but between them, first color appears in Screen adj item (4) is fixed, adj the other two so that to obtain the similar axis as above. ** Repeat step 1 & 2 to get a regulated position 12300°K 2 WHITE BALANCE ADJ (1)WHITE (HIGH BEAM) ( In Window Pattern Signal) (to be done after screen First use Minolta Color Analyzer CA100, let the gun point at Dark White position (as drawing attach), Adj V06 until LUMINANCE Y become 4 cd/m2, then let the gun adj) (I2C BUS CONTROL) point at White position ( as drawing attach), Adj V04 until LUMINANCE Y become: 150 cd/m2. In service mode V00, adj the R-D & B-D until the axis of color temperature become ADJUSTMENT (I2C BUS CONTROL) NO ADJUSTMENT POINT 1 SCREEN SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST ADJUSTMENT (1) 50% IRE 9.5% IRE *Note : Signal using W/B Pattern Generator SX-1006 (IWATSU) or equivalent. Window Pattern Signal output level are as above: 5.5% IRE White Dark White RC key "1" (HEX 80) RC key "4" (HEX 20) RC key "2" (HEX 40) RC key "5" (HEX A0) RC key "3" (HEX C0) RC key "6" (HEX 60) RC key "7" (HEX E0) RC key "Flashback" (HEX E4) RC key "8" (HEX 10) RC key "0" (HEX 50) WINDOW PATTERN SIGNAL Note 1: R-CUTOFF (R-C) UP R-CUTOFF (R-C) DOWN G-CUTOFF (G-C) UP G-CUTOFF (G-C) DOWN B-CUTOFF (B-C) UP B-CUTOFF (B-C) DOWN R-DRIVE (R-D) UP R-DRIVE (R-D) DOWN B-DRIVE (B-D) UP B-DRIVE (B-D) DOWN WAVEFORM OR OTHERS 5 BEAM CURRENT CHECK (4) Beam current must be within : 12-2 1000 ± 100µA (3) Connect the DC miliammeter between TP 603 ( + ) & TP 602 ( - ) (Full Scale: 3mA Range). (2) Press R/C to set Picture NORMAL condition. (1) Receive the "Monoscope Pattern" signal. 4 SUB-CONTRAST (1) In Window Pattern Signal condition. (to be done after screen, (2) Using Minolta Color Analyzer CA-100, let the gun point at White position (as attach drawing), adjust V04 Bus data until LUMINANCE Y = 150cd/m2 white balance adj, sub-brightness adj) (I2C BUS CONTROL) Service Luminance Tolarance (cd/m2) Mode (cd/m2) Upper Limit Lower Limit Enable 150.0 +10 -10 Disable 150.0 +10 -10 NO ADJUSTMENT POINT ADJUSTMENT CONDITION / PROCEDURE 3 SUB-BRIGHTNESS (1) In Window Pattern Signal condition. (to be done after screen, (2) Using Minolta Color Analyzer CA-100, let the gun point at Dark White position (as attach drawing), adjust V06 Bus data until LUMINANCE Y = 4 cd/m2 white balance adj) (I2C BUS CONTROL) Service Luminance Tolarance (cd/m2) Mode (cd/m2) Upper Limit Lower Limit Enable 4.0 +0.5 -0.5 Disable 4.0 +1.5 -0.5 SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST ADJUSTMENT (2) White WINDOW PATTERN SIGNAL Dark White WINDOW PATTERN SIGNAL WAVEFORM OR OTHERS (Using 10:1 Probe) (2) Connect the oscilloscope to B-AMP Transistor Base (JUMPER 410). Range : 100mV/Div (AC) Sweep time : 10µsec/Div (I2C BUS CONTROL) 13-1 (5) Disable Y-Mute by pressing key (Hex E4) or FLASHBACK, then clear the SERVICE mode. (4) Call the "V07" data in service mode. Adjust the "V07" bus data to obtain the waveform shown as Figure 1-1. (3) In Service mode, go to V07, then press R/C Y-mute (Hex E4) or FLASHBACK key. ADJUSTMENT CONDITION / PROCEDURE (1) Receive the "NTSC 3.58 Color Bar" signal thru AV in. NO ADJUSTMENT POINT 1 SUB-TINT NTSC CHROMA ADJUSTMENT (5) Clear the SERVICE mode. (4) Using the R/C call V05 in SERVICE mode. Adjust V05 bus data, so that the 75% White & Red portions of PAL Color Bar be at the same level shown as Fig 1-1. Range : 100mV/Div (AC) Sweep Time : 10µsec/Div (I2C BUS CONTROL) (2) Press R/C to set Picture Normal condition. (to be done after sub-picture, sub-tint adj) (3) Connect the oscilloscope to R-Amp Transistor Base (JUMPER 401) W Mg R W Y Cy G Mg R B Fig.1-1 *NOTE : Please make sure waveform is adjusted until getting good step slope which is can be a straight line slope at the top of waveform step. straight line slope WAVEFORM OR OTHERS Fig. 1-1 75% W Y 100% (I2C BUS CONTROL) (use 10:1 probe) (use 10:1 probe) 13-2 7) Adjust the V15 so that the offset of B-Y to minimum, shown in Fig 2(b), it means adjust the offset of between No signal line and Signal line to minimum 6) Connect oscilloscope to TP 801. Range: 20mV/Div (AC) Sweep time: 20usec/Div 5) In the service mode, select service data V15. 4) Adjust the V14 so that the offset of R-Y to minimum, shown in Fig 2(b), it means adjust the offset of between No signal line and Signal line to minimum 3) Connect oscilloscope to TP 801. Range: 20mV/Div (AC) Sweep time: 20usec/Div 2) In the service mode, select service data V14. ADJUSTMENT CONDITION / PROCEDURE 1) Receive "SECAM ALL WHITE" signal. NO ADJUSTMENT POINT 1 SECAM BLACK LEVEL R-Y / B-Y WAVEFORM OR OTHERS Cy G B NO ADJUSTMENT POINT 1 SUB COLOUR ADJUSTMENT CONDITION / PROCEDURE (1) Receive the "PAL Color Bar" signal. SECAM CHROMA ADJUSTMENT PAL CHROMA ADJUSTMENT 13 Offset Offset Fig 2(b) become 1 line Fig 2(a) WAVEFORM OR OTHERS (1) Using the TV/VIDEO key on the remote controller, make sure that the modes change in order of TV, COMPONENT, AV1,AV2 & TV again and the video & audio output are according to the input terminal for each mode. (2) Video cross-talk AV to TV checking : a) When connect AV1 input, check TV also b) When connect AV2 input, check TV also (1) Connect YUV & Audio signal to Component In terminal and Audio terminal. (2) Using the INPUT key on the remote controller, press it until the modes change to COMPONENT confirm output is appear. (3) Audio source is share with AV1 (1) Receive "PAL colour bar" signal ( Sound 400Hz, 100 % Mod.) (2) Set the sound output to 500mW by volume key. (3) Terminate the "Sub Woofer" output with a 22 kW impedance. make sure that the output is : 4.0 Vp-p ± 3 dB 2 VIDEO AND AUDIO INPUT CHECK 3 COMPONENT IN CHECK 4 SUB WOOFER OUTPUT CHECK 14-1 ADJUSTMENT CONDITION / PROCEDURE (1) Receive the "PAL Color Bar" signal (100% White Color Bar, Sound 400 Hz 100% Mod). (2) Terminate the Video output with a 75 ohm impedance. Make sure the output is as specified (1.0 Vp-p ± 3 dB). (3) Terminate the Audio output with a 10K ohm impedance. Make sure the O/P is as specified (1.5 Vp-p ± 3 dB). NO ADJUSTMENT POINT 1 VIDEO AND AUDIO OUTPUT CHECK A/V INPUT & OUTPUT CHECKING Caution: Component In terminal, only component will be detected. AV1 share with YUV. Therefore, if YUV signal is connected to WAVEFORM OR OTHERS (1) Receive mono-tone signal. (2) Set MENU, then go into SOUND MENU to select BALANCE (3) Press VOLUME UP/DOWN key to check whether the left to right BALANCE effect is OK or not (1) Receive "music" sound signal. (2) Set MENU, then go into SOUND MENU to select EQUALIZER. (3) Press VOLUME UP/DOWN key to check EQUALIZER effect is OK or not (1) Receive "Monoscope Pattern" signal. (2) Set MENU, then go into PICTURE mode to select WHITE TEMP. (3) Press Volume Up/Down key to check WHITE TEMP function. The back ground will change to (shift right) bluish and (shift left) reddish. 8 BALANCE 9 EQUALIZER 10 WHITE TEMP 14-2 (1) Receive "music" sound signal. (2) Set MENU, then go into SOUND MENU to select SURROUND. (3) Press VOLUME UP/DOWN key to check SURROUND I, II and OFF effect. (1) All Ch (1~99) will have an OSD display of the channel number in green colour under AFT ON condition. 6 CH DISPLAY COLOUR 7 SURROUND (1) Receive "Monoscope Pattern" signal. (2) Set MENU, then go into PICTURE mode to select SHARPNESS. (3) Press Volume Up/Down key to check whether the SHARPNESS effect is OK or not. (1) Receive the "NTSC Colour Bar" signal thru AV in. (2) Set MENU, then go into PICTURE mode to select TINT. (3) Press Volume Up/Down key to check TINT, UP for GREEN direction and DOWN for PURPLE direction whether is OK or not. 4 TINT Key 5 SHARPNESS Key (1) Receive "Monoscope Pattern" signal. (2) Set MENU, then go into PICTURE mode to select BRIGHTNESS. (3) Press Volume Up/Down key to check whether the BRIGHTNESS effect is OK or not. 3 BRIGHTNESS Key (1) Receive "Monoscope Pattern" signal. (2) Connect output of Bias Box to D602 cathode (C602 positive). (3) Set voltage of Bias Box to 18V and make sure the protector is not working. (4) Set voltage of Bias Box to 28.5V. and make sure the protector is working. 2 H, V PROTECTOR 3 OTHER PROTECTOR (1) Once finish rectified Electrolytic Capacitor short testing in + B line, check all possible damaged components on +B line. (Use random selected set for inspection) (1) Receive "Color Bar" signal. (2) Set MENU, then go into PICTURE mode to select COLOUR. (3) Press Volume Up/Down key to check whether the COLOUR effect is OK or not. 2 COLOUR Key Note : Select one of Q853/4/5 to do each short. ADJUSTMENT CONDITION / PROCEDURE (1) Receive "Monoscope Pattern" signal. (2) Set MENU, then go into PICTURE mode to select CONTRAST. (3) Press Volume Up/Down key to check whether the CONTRAST effect is OK or not. NO ADJUSTMENT POINT 1 CONTRAST Key ADJUSTMENT CONDITION / PROCEDURE (1) Receive "Monoscope Pattern" signal. (2) Set CONTRAST MAX. (3) Set BRIGHT MAX. (4) During the Collector & Emitter of Q853/4/5 short, make sure the protector ON and switch to standby mode. NO ADJUSTMENT POINT 1 BEAM PROTECTOR WAVEFORM OR OTHERS FUNCTION OPERATION CHECKING (VIDEO & AUDIO) (1) PROTECTOR OPERATION CHECKING WAVEFORM OR OTHERS 14 8 9 8 11 15-1 (1) Receive "PAL-D/K" signal, press MENU, choose CH-SETTING then go into SOUND mode to select B/G, I Check the sound output is not working properly. Select D/K and check the sound output to make sure it is working properly. (2) Receive "PAL-I" signal, press MENU, choose CH-SETTING then go into SOUND mode to select B/G, D/K. Check the sound output is not working properly. Select I and check the sound output to make sure it is working properly. (3) Receive "PAL-B/G" signal, press MENU, choose CH-SETTING then go into SOUND mode to select I, D/K. Check the sound output is not working properly. Select B/G and check the sound output to make sure it is working properly. (4) Receive "NTSC3.58 -M" signal, press MENU, choose CH-SETTING then go into SOUND mode to select I, D/K. Check the sound output is not working properly. Select M and check the sound output to make sure it is working properly. 14 9 7 8 12 OFF 0 ON 13 SOUND SYSTEM 10 10 12 11 10 EQUALIZER MENU * Bar indicator display 0~20 100 300 1K 3K 8K OFF 0 ON MOVIE 60 +3 0 CENTER +3 OFF Mid (1) Receive the "PAL COLOUR BAR" signal, press MENU, choose CH-SETTING to select COLOR modes except PAL, check the COLOUR is not working properly. Then, select the "PAL" mode. Check again its colour so that it is working properly. (2) Receive "SECAM COLOUR BAR" signal, press MENU, choose CH-SETTING to select COLOR modes except SECAM, check the COLOUR is not working properly. Then, select the "SECAM" mode. Check again its colour so that it is working properly. (3) Receive "NTSC 4.43" signal, press MENU, choose CH-SETTING to select COLOR modes except N443, check the COLOUR is not working properly. Then, select the N443 mode. Check again its colour so that it is working properly. (4) Receive "NTSC 3.58 COLOUR BAR" signal , press MENU, choose select COLOR modes except N358, check the COLOUR is not working properly. Then, select the N358 mode. Check again its colour so that it is working properly OFF 0 ON SOUND MODE SURROUND BALANCE AVL ADJUSTMENT CONDITION / PROCEDURE (1) Once in PICTURE or SOUND Mode, and the NORMAL key is pressed, all the settings will be preset to normal setting accordingly . (Normal setting value for every AV mode : NEWS/MUSIC/MOVIE) PICTURE MODE NEWS MUSIC CONTRAST 55 60 COLOUR 0 0 BRIGHTNESS 0 0 TINT CENTER CENTER SHARPNESS 0 0 PICTURE NR OFF OFF WHITE TEMP Mid Mid 12 COLOUR SYSTEM NO ADJUSTMENT POINT 11 NORMAL Key CHECKING FUNCTION OPERATION (VIDEO & AUDIO) (2) WAVEFORM OR OTHERS *Note: In NORMAL Mode, when press NORMAL key, will appear NORMAL OSD and all setting PICTURE, SOUND functions set to NORMAL. NO ADJUSTMENT POINT 1 SHOCK TEST SHOCK TEST CHECKING. 1 O 15-2 ADJUSTMENT CONDITION / PROCEDURE (1) Hit at the top of TV set for two time. (2) Check TV set not damage and TV operation operate correctly. 21DXS200 QUANTITY ENGLISH (1) Check OSD LANGUAGE quantity and type for respect model. 15 OSD LANGUAGE QUANTITY CHECK MODEL ADJUSTMENT CONDITION / PROCEDURE (1) Receive "PAL COLOUR BAR" signal. (2) Turn up the volume control to maximum, make sure the sound is heard from the speakers. Then put the unit in no signal state. (3) Check the sound mute is effective. (4) Finally turn sound level of CTV to minimum. NO ADJUSTMENT POINT 14 NOISE MUTE CHECKING CHECKING FUNCTION OPERATION (VIDEO & AUDIO) (3) WAVEFORM OR OTHERS WAVEFORM OR OTHERS 16 Check D751, IC702 and IC703 Check IC801 pin 13 Does horizontal circuit oscillate ? Check IC801 Check CRT connector Kwire and the signal on it. Check Secondary Main+B (Approx. 125V) Check T701 pin (8) voltage (Approx. 310V at 220V AC) NO RASTER Normal Check Q601, Q602 and Q604 Check Q752 for 8V regulator circuit and Q752, IC751, Q754 for 5V regulator circuit. Normal Check pin (47) of IC801, Tuner and related circuit. Check the tuner AGC at JA402. NO PICTURE NO SOUND SOUND Check Speaker Check IC301 and peripheral circuit Check signal appear from pin (65) & (66) of IC801 to pin (2) & (4) of IC301 Check pin (46) at IC801 and related circuit. Does noise or signal appear at pin (8) ,(9),(11) and (12) of IC301 ? Check pin (1) of SF201, Tuner and related circuit. Check IC801 and related circuit. Does noise or signal appear at pin (30) of IC801 ? Does noise or signal appear at pin (48) and (49) of IC801 ? CIRCUITS TO BE CHECKED: Tuner. PIF. Automatic Gain Control. (5V), (32V) Power Source. Check pins (9), (13), and (14) of IC801. VERTICAL NOR SYNCHRONIZATION NO 17-1 Check C511 VERTICAL Check R503, R515, R513 R514. R520. and C515 Vertical linearity and size are abnormal. Re-adjust vertical size. (Bus Data) SCAN DEFECTIVE VERTICAL AMP. AND VERTICAL LINEARITY CIRCUIT TO BE CHECKED: Sync. Separator Circuit. NEITHER HORIZONTAL Check X801 (4.43MHz) Check Q855 and its adjacent circuits. The picture colour is cyan. Check IC801. COLOUR 17-2 Check IC1001 and bias control circuit. NO COLOUR Check Q844 and its adjacent circuits. The picture colour is magenta. Is some colour produced in B/W broadcast reception ? NO SPECIFIC Check Q202 and peripheral circuit Check Q853 and its adjacent circuits. The picture colour is yellow. Re-adjust the white balance. Is the white balance properly adjusted ? WAVE FORM (1)1.78 Vp-p (2)4.80 Vp-p (3)3.84 Vp-p (4)4.76 Vp-p Horiz. Rate Horiz. Rate Horiz. Rate Horiz. Rate (5)3.16 Vp-p (6)4.66 Vp-p (7)5.60 Vp-p (8)1.57 Vp-p Horiz. Rate Vert. Rate Horiz. Rate Vert. Rate (9)2.60 Vp-p (10)20.80 Vp-p (11)1110 Vp-p (12)63.40 Vp-p Horiz. Rate Horiz. Rate Horiz. Rate Vert. Rate (13)7.52 Vp-p (14)147.00 Vp-p (15)542.00 Vp-p (16)118.00 Vp-p Vert. Rate Horiz. Rate - Horiz. Rate (17)96.4 Vp-p (18)118.80 Vp-p Horiz. Rate Horiz. Rate 18 21EXS350 8 80 5 T R 51 81 J C 50 IXC844WJ 1 4 M24C16 CATHODE A1530 CATHODE CATHODE 8-2 5-1 27- ANODE EXA535WJ ANODE EXA572WJ 2SD468-C 1 KIA78R05 C6090++1 2SD1913 D3SB 1 7 LA78041 IXC844WJ 30 ANODE ISS356 CATHOD ANODE (RED) PK0013 31 100 CATHODE ANODE EXA520WJ 2SC3198-G 2SC3198-Y C2735 CATHOD ANODE DX0445CE STRW6553 2SA1266 60 74 DX0470CE GND COLLECTOR Vout SE125N++ LA42102+ 19 DESCRIPTION OF SCHEMATIC DIAGRAM NOTES: SAFETY NOTES: 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS. 2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING. 1. The unit of resistance "ohm" is omitted. (K = 1000 ohms, M = Mega ohm). 2. All resistors are 1/16 watt, unless otherwise noted. 3. All capacitors are mF, unless otherwise noted. (P = mmF). VOLTAGE MEASUREMENT CONDITIONS: IMPORTANT SAFETY NOTICE: PARTS MARKED WITH " " ( ) ARE IMPORTANT FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND PERFORMANCE OF THE SET. 1. Voltages in parenthesis measured with no signal. 2. Voltages without parenthesis measured with 3mV B & W or Colour signal. 3. All the voltages in each point are measured with VTVM. SERVICE PRECAUTION: THE AREA ENCLOSED BY THIS LINE ( ) IS DIRECTLY CONNECTED WITH AC MAINS VOLTAGE. WHEN SERVICING THE AREA, CONNECT AN ISOLATING TRANSFORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE HAZARD OF ELECTRIC SHOCK. 20 WAVEFORM MEASUREMENT CONDITIONS: 1. The colour bar generator signal of 1.0V peak applied at pin (24) of IC201. 2. Approximately 4V AGC bias . 21ES251E / 21ES253E / 21ES353E 21 MGR MARTINUS CHI ENG DEDI S. DIAN T. GA-8S CRT (All 21"US) 21EPS258E / 21EMS258E / 21ECS258E / 21ES251E / 21ES353E / 21ES253E KZ018JCE 21ES251E/21ES253E/21ES353E (N2) 4.7k 6800p 4.7k 6800p C383 1 1 C384 0.1u 50V 21ES251E / 21ES253E / 21ES353E 1 C835 0.01u 0.1u 50V IC801 IXC844WJ C810 0.01u MAIN GA8S C821 0.01u RA832WJFW R1088 1K CA054WJ RA759WJFW RJ8 0 RJ9 0 RA831WJFW EZB526WJ WA303WJ MGR DEDI S. CHI DIAN T. ENG QA040WJN1 PA024WJ VXA210WJ MARTINUS PA006WJ RA874WJFW NA792WJ NA890WJ COPYRIGHT © 20 ALL RIGHTS RESERVED.