SERVICE MANUAL MODEL KV-21LT1B KV-21LT1E KV-21LT1K KV-21LT1U COMMANDER DEST FE-2 CHASSIS MODEL CHASSIS NO. RM-887 French RM-887 Spanish SCC-Q53C-A RM-887 OIRT SCC-Q51C-A RM-887 UK SCC-Q52C-A KV-21FT2K SCC-Q54C-A COMMANDER DEST RM-887 OIRT KV-21LT1 RM-889 RM-887 KV-21FT2 1 CHASSIS NO.
TABLE OF CONTENTS Section Title Specifications Connectors Self Diagnostic Software .................... .................... .................... Page Section 3 5 6 3. SET-UP ADJUSTMENTS 3-1. Beam Landing 3-2. Convergence 3-3. Focus Adjustment 3-4. Screen (G2), White Balance .................... .................... .................... .................... 16 17 19 19 7 8 10 10 10 11 4. CIRCUIT ADJUSTMENTS 4-1. Electrical Adjustments 4-2. Test Mode 2 .................... ....................
ITEM MODEL French Spanish OIRT Television System B/G/H, L,I B/G/H B/G/H, D/K UK Model Power Consumption Picture Tube I Channel Coverage VHF : E2-E12, F2-F10 UHF : E21-E69 CABLE TV : S01-S03, S1-S20, B-Q HYPER : S21-S41 L F02-F10, F21-F69 I UHF : B21-B69 VHF : E2-E12 UHF : E21-E69 CABLE TV : S01-S03, S1-S20 HYPER : S21-S41 VHF : E2-E12, R01-R12 UHF : E21-E69, R21-R69 CABLE TV : S01-S03, S1-S20 HYPER : S21-S41 PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN) PAL, SECAM NTSC4.43, NTSC3.
Model Name Item KV-21FT2K KV-21LT1B KV-21LT1E KV-21LT1K KV-21LT1U Pal Comb OFF OFF OFF OFF OFF PIP OFF OFF OFF OFF OFF RGB Priority OFF ON ON OFF ON Woofer Box OFF OFF OFF OFF OFF Scar t 1 ON ON ON ON ON Scar t 2 OFF OFF OFF OFF OFF Front in (3) OFF OFF OFF OFF OFF OFF Scar t 4 OFF OFF OFF OFF Projector OFF OFF OFF OFF OFF AKB in 16:9 mode OFF OFF OFF OFF OFF Norm B/G ON ON ON ON OFF Norm I OFF ON OFF OFF ON Norm D/K ON OFF ON
21 pin connector Pin No 1 2 4 1 21 20 19 Signal Signal level Audio output B (right) Standard level : 0.5V rms Output impedence : Less than 1kohm* 2 Audio output B (right) Standard level : 0.5V rms Output impedence : More than 10kohm* 3 Audio output A (left) Standard level : 0.5V rms Output impedence : Less than 1kohm* 4 Ground (audio) 5 Ground (blue) 6 Audio input A (left) 7 Blue input 0.7 +/- 3dB, 75 ohms positive 8 Function select (AV control) High state (9.
FE-2 SELF DIAGNOSTIC SOFTWARE The identification of errors within the FE-2 chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty.
OK button to select Yes. 4 The Auto Tuning menu appears on the screen. Press the Select “-“ instead of a country • If the country in which you want to use the TV set does not appear in the list. • If you do not want your channels (TV Broadcast) stored in a given channel sequence starting from programme position 1. screen. Press the or button to select the country in which you will operate the TV set, then press the OK button to confirm your selection.
. . / or / . OK Mode: Personal Contrast Brightness Colour Sharpness Hue Reset Picture Adjustment Level 2 OK . MENU K Menu System 9 continued... To do that: after selecting the item you want to alter press , then press repeatedly / / or to adjust it and finally press OK to store the new adjustment. This menu also allows you to customise the picture mode based on the programme you are watching: Personal (for individual settings). Live (for live broadcast programmes). Movie (for films).
OK Programme: System: Channel: Label: AFT: Skip: Decoder: Confirm 01 B/G C 21 --TVE On No Off Manual Programme Preset Set Up Language/Country Auto Tuning Programme Sorting Manual Programme Preset Advanced Features Set Up OK Language/Country Auto Tuning Programme Sorting Manual Programme Preset Advanced Features Mode: Personal Contrast Brightness Colour Sharpness Hue Reset Picture Adjustment Set Up Language/Country Auto Tuning Programme Sorting Manual Programme Preset Advanced Features OK Se
25 153 101 98 TELETEXT Index Programme News Sport Weather . Press it again to cancel teletext mode. Teletext 15 Fastext service lets you access pages with one button push. While you are in Teletext mode and Fastext is broadcast, a colour coded menu appears at the bottom of the teletext page. Press the colour button (red, green, yellow or blue) to access the corresponding page. Fastext To Switch Off Teletext: Press . To reveal concealed information (e.g: answer to a quiz): Press / .
• Using the menu system, select the “Picture Adjustment” menu and select “Reset” to return to the factory settings. • Check that the optional equipment is on and press the button repeatedly on the remote control until the correct input symbol is displayed on the screen. • Press the • Using the menu system, select the “Picture Adjustment” menu and select “Reset” to return to factory settings. • Turn off any equipment connected to the Scart connector on the rear of the TV.
SECTION 2 DISASSEMBLY KV-21LT1 2-1. Rear Cover Removal 2-2. A Board PWB Removal [ Step 1 ] <= => <= => Remove screw. <= Release the mains power cable from its securing posts. Remove the rear cover fixing screws indicated. Pull the rear cover away from the front beznet until clear of chassis. Note : Use a cross-head screwdriver with a blade length of at least 200mm. <= Remove FBT support bracket. 2-3. A Board PWB Removal [ Step 2 ] 2-5.
2-6. Picture Tube Removal 1 WARNING: BEFORE REMOVING THE ANODE CAP High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to remove the anode cap. Short between anode and CRT coated earth ground strap. 2 6 4 7 3 9 8 Coated Earth Ground Strap 5 1. 2. 3. 4. 5. 6. 7. 8. 9. Discharge the anode of the CRT and remove the anode cap. Release the EHT lead from its CRT support bracket.
KV-21FT2 2-8. Chassis Removal and Refitting 2-7. Rear Cover Removal => => => => => => => Remove the rear cover fixing screws indicated. Pull the rear cover straight back until clear of chassis. To remove the chassis release the clips indicated at opposite sides of the main bracket and slide the chassis away from the beznet. Ensure that the interconnecting leads are released from their purse locks to prevent damage being caused. 2-10. Wire Dressing 2-9.
2-11. Picture Tube Removal 9 WARNING: BEFORE REMOVING THE ANODE CAP 1 High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to remove the anode cap. Short between anode and CRT coated earth ground strap. 3 5 7 6 8 2 Coated Earth Ground Strap 4 1. 2. 3. 4. 5. 6. 7. 8. 9. Discharge the anode of the CRT and remove the anode cap.
SECTION 3 SET-UP ADJUSTMENTS • • • 1. 2. Carry out the adjustments in the following order : 3-1. Beam Landing. 3-2. Convergence. 3-3. Focus. 3-4. White Balance. When complete readjustment is necessary or a new picture tube is installed, carry out the following adjustments. Unless there are specific instructions to the contrary, carry out these adjustments with the rated power supply.
4. 3-2. Convergence Preparation: · · · If the V.STAT magnet is moved in the direction of the (a) and (b) arrows, the Red, Green and Blue points move as indicated below. a Before starting this adjustment, adjust the focus, horizontal size and vertical size. Minimize the Brightness setting. a Input a dot pattern from the pattern generator. a b b Horizontal and Vertical Static Convergence b B B G G R R a Center dot R G R B G B R G B a b H.STAT convergence control V.
Geometry Adjustment. YCH Adjustment Preparation: YCH VR + Before starting this adjustment, adjust the horizontal and vertical static convergence. 1. 2. 3. + Deflection Yoke Remove the deflection yoke spacer. Tilt the deflection yoke as indicated in the figure below and optimise the geometry. Tilting the DY Up and Down will balance the upper and lower pin adjustment. Tilting the DY Left and Right will balance the H-Trap adjustment. Re-install the deflection yoke spacer.
Layout of each control 3-4. Screen (G2), White Balance [Adjustment in the service mode using the remote commander] G2 adjustment 1. 2. 3. V.STAT Purity 4. BMC (Hexapole) Input a dot signal from the pattern generator. Set the Picture, Brightness and Colour to minimum. Apply 175V DC from an external power supply to the R, G and B cathodes of the CRT. Whilst watching the picture, adjust the G2 control [SCREEN] located on the Flyback Transformer to the point just before the flyback return lines disappear.
SECTION 4 CIRCUIT ADJUSTMENTS 4-1. Electrical Adjustments SERVICE Service adjustments to this model can be performed using the supplied Remote Commander RM-887. Offset-R Offset-G R-Drive G-Drive B-Drive Peak-Freq Luma-Delay SC0 White-Peak Subcont Subright Subcol Subsharp Br OSD Br TXT How to enter into the Service Mode 1. 2. Turn on the main power switch and enter into the stand-by mode. Press the following sequence of buttons on the Remote Commander.
Sub Brightness Adjustment 1. 2. 3. Input a Monoscope pattern. Press ‘TEST’ ‘TEST’ 13 on the Remote Commander. Adjust the ‘Sub-Brightness’ data so that there is barely a difference between the 0 IRE and 10 IRE signal levels. Sub Contrast Adjustment 1. 2. 3. Input a video signal that contains a small 100% white area on a black background. Connect an digital voltmeter to Pin 10 of J701 [C Board]. Adjust the Sub-Contrast [‘TT11’] to obtain a voltage of 95 +0,- 5V.
4-2. TEST MODE 2: V SIZE Is available by pressing the ‘TEST’ button twice, OSD ‘TT’ appears. The functions described below are available by selecting the two numbers. To release the ‘Test mode 2’, press 00, 10, 20 ... twice or switch the TV set into Stand-by mode. In ‘TT Menu’ mode, it is possible to remove the Menu from the screen by pressing the Speaker Off button once. Pressing the Speaker OFF button a second time will cause the Menu to reappear.
Memo 23
5-2. CIRCUIT BOARD LOCATION Reference Information RESISTOR RN : METAL FILM RC : SOLID FPRD : NON FLAMMABLE CARBON FUSE : NON FLAMMABLE FUSIBLE RS : NON FLAMMABLE METAL OXIDE VM RB : NON FLAMMABLE CEMENT CVM Board RW : NON FLAMMABLE WIREWOUND C C N H J S1 Board A2 A : ADJUSTMENT RESISTOR A1 D2 A D1 A Board D 5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS Note : • • • All capacitors are in µF unless otherwise noted.
VIDEO L J401 (1/2) TU101 CN001 MODE1 MODE2 GREEN IN RED IN C2 IN BLK V IN 1 Y/V IN 2 AUDIO A8 B8 A11 A15 B15 A16 A20 B20 A2 A( VIDEO AUDIO BLUE IN A7 VIDEO SDA SCL AGC 1 4 5 SDA SCL OUT 2 25 ) BUFFER Q401,411 IC003 RESET FUNCTION SWITCH S001 - S006 WP 7 1 VCC IC002 REMOTE CONTROL RECEIVER IC004 +5V STBY +3.3V STBY POWER SUPPLY, DEFLECTION, SMALL SIGNAL BOARD, AUDIO AMPLIFIER 5 6 5-2.
(e) (b) 7.5 131 2.5 Q703 Q704 Q705 2.3 3.1 132.4 8.1 3.0 124.2 124.8 Q702 Q701 Ref 7.5 5.2 131.6 7.5 202 (c) Q710 Q709 Q708 Q707 Q706 Ref 8.1 (b) 8.1 2.1 123.0 124.3 7.5 3.5 124.6 125.8 7.5 (e) C board Semiconductor Voltage Table C [ R, G, B OUT ] (c) 5.5 123.3 7.5 5.5 125.0 Ref Q717 Q716 Q715 Q713 Q712 (e) (b) (c) 124.2 123.4 125.8 125.0 132.3 131.5 29 8.1 8.1 8.1 133.0 132.4 201.9 125.8 126.4 201.9 IC1801 1.3 4.1 4.1 7.0 8.0 1.
KV-21FT2K JW 5.0mm 2200uF PLUG, CONNECTOR 4P KV-21LT1U 1000uF - PLUG, CONNECTOR 3P KV-21LT1K 1000uF - PLUG, CONNECTOR 3P 1000uF - PLUG, CONNECTOR 3P PLUG, CONNECTOR 3P CN1201 A KV-21LT1E B - H 1000uF C D E F G KV-21LT1B I C1228 J C1203 − L1200 TU101 33 JW 5.0mm BTF-EP401 3.3uH JW 5.0mm BTF-EU601 3.3uH JW 5.0mm BTF-EP401 3.3uH JW 5.0mm BTF-EC401 3.3uH JW 5.
A A B B C D E F G 34 36 H I J K L M N O P Q R S T U V W X 35 37 Y Z 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 36 38 28 29 30 31 32 33 34 35
5-4.
ERA81-004TP1 ERA83-006 MTZJ-3.6A MTZJ-T-77-2.2A HZS9.INBZ MTZJ-T-77-3.6B MTZJ-T-77-5.6B MTZJ-T-77-5.6C MTZJ-T-77-6.8A MTZJ-T-77-6.8C MTZJ-T-77-8.2B MTZJ-T-77-7.5B MTZJ-T-77-9.1A MTZJ-T-77-9.1C MTZJ-T-77-10 MTZJ-T-77-15B MTZJ-T-77-33A MTZJ-33C MTZJ-7.5B RD3.9ES-B2 RD5.6ESB2 RD6.8ES-B2 RD7.5ESB2 RD9.1ES-B3 RD10ESB2 RD15ESB2 1SS119-25TD 1SS133T-77 CATHODE ANODE SLA-570KT3F CATHODE ANODE 1SS355TE-17 RD12SB2 UDZS-TE-17-4.7B UDZS-TE-17-5.6B UDZS-TE-17-6.8B UDZS-TE-17-9.
5-5 IC BLOCK DIAGRAMS A BOARD IC604 BA41W12ST A BOARD IC401/IC531 LM393TD SW 2 Vref 1 + 1 5 7 + 3 GND 2 + 3 4 - - 6 + 5 A BOARD IC601 MCZ3001D 18 8 Remote OFF Sel=34v Internal ref 5v DVLD 15v/8v Driver Reg.
SECTION 6 EXPLODED VIEWS NOTE : • • Items with no part number and no description are not stocked because they are seldom required for routine service. The construction parts of an assembled part are indicated with a collation number in the remarks column. • Items marked “ * “ are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. 6-1. KV-21LT1 CHASSIS 9 5 6 4 8 7 1 2 3 UK models only REF. NO. 1 £ 2 3 £ £ 4 £ 5 PART.
6-2. KV-21LT1 PICTURE TUBE 67 73 74 75 76 69 71 77 68 70 72 66 63 64 65 62 60 61 52 59 51 53 55 54 56 58 57 REF. NO. PART.
SECTION 6 EXPLODED VIEWS NOTE : • • Items with no part number and no description are not stocked because they are seldom required for routine service. The construction parts of an assembled part are indicated with a collation number in the remarks column. • Items marked “ * “ are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. 6-3. KV-21FT2 CHASSIS 10 6 7 5 9 8 4 1 2 3 REF. NO. 1 2 3 4 5 £ £ £ PART.
6-4. KV-21FT2 PICTURE TUBE 65 72 64 73 74 75 69 76 66 67 70 68 71 64 61 60 62 63 59 51 58 56 57 71 52 70 54 55 53 REF. NO. 51 52 53 54 55 56 57 58 £ 59 £ 60 61 62 63 £ PART.
SECTION 7 ELECTRICAL PARTS LIST PARTS LISTING TABLE OF CONTENTS Page A BOARD COMMON Parts List : Parts common to all models listed in this manual .......................................... 47 A BOARD VARIANT Parts List : Parts that belong only to the model specified Model KV-21LT1 ......................................................................................................... 53 KV-21FT2 ........................................................................................................
The components identified by shading and marked are critical for safety Replace only with the part number specified. REF. NO. PART.
The components identified by shading and marked are critical for safety Replace only with the part number specified. A REF. NO. PART.NO C538 C539 C540 C541 C542 1-165-319-11 1-107-642-91 1-136-206-11 1-106-383-00 1-162-131-11 CERAMIC CHIP 0.1UF ELECT 3.3UF MYLAR 0.033UF MYLAR 0.047UF CERAMIC 220PF 20.00% 10.00% 10.00% 10.00% C545 C546 C547 C550 C552 1-164-004-11 1-135-840-51 1-117-671-21 1-107-638-11 1-102-212-00 CERAMIC CHIP 0.1UF FILM 0.
The components identified by shading and marked are critical for safety Replace only with the part number specified. REF. NO. PART.NO DESCRIPTION D014 D016 D017 D018 D019 8-719-422-12 8-719-109-89 8-719-109-97 8-719-109-69 8-719-109-97 DIODE DIODE DIODE DIODE DIODE D020 D035 D036 D051 D101 8-719-109-89 8-719-069-55 8-719-069-55 8-719-978-33 8-719-977-81 D103 D104 D210 D211 D212 A REMARK REF. NO. PART.NO DESCRIPTION REMARK UDZ-TE-17-3.9B MTZJ-T-77-5.6B MTZJ-T-77-6.8B MTZJ-T-77-3.
The components identified by shading and marked are critical for safety Replace only with the part number specified. A REF. NO. PART.
The components identified by shading and marked are critical for safety Replace only with the part number specified. A REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO R025 R026 R027 R028 R029 1-216-025-91 1-216-025-91 1-216-025-91 1-216-025-91 1-216-061-00 RES-CHIP RES-CHIP RES-CHIP RES-CHIP RES-CHIP 100 100 100 100 3.3K 5% 5% 5% 5% 5% R031 R032 R033 R034 R035 1-216-210-00 1-216-061-00 1-216-073-00 1-216-121-91 1-216-101-00 RES-CHIP RES-CHIP RES-CHIP RES-CHIP RES-CHIP 3.3K 3.
The components identified by shading and marked are critical for safety Replace only with the part number specified. A REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO R504 R505 R506 R507 R508 1-249-385-11 1-216-677-11 1-216-665-11 1-216-349-00 1-216-677-11 CARBON METAL CHIP METAL CHIP METAL OXIDE METAL CHIP 2.2 12K 3.9K 1 12K 5% 0.5% 0.5% 5% 0.5% R509 R510 R512 R514 R515 1-216-665-11 1-216-113-00 1-249-382-11 1-249-377-11 1-249-377-11 METAL CHIP RES-CHIP CARBON CARBON CARBON 3.9K 470K 1.
The components identified by shading and marked are critical for safety Replace only with the part number specified. C REF. NO. PART.NO DESCRIPTION REMARK R652 R653 R654 R656 R660 1-216-081-00 1-216-073-00 1-216-001-00 1-216-365-00 1-247-807-31 RES-CHIP RES-CHIP RES-CHIP METAL OXIDE CARBON 22K 10K 10 0.
The components identified by shading and marked are critical for safety Replace only with the part number specified. C REF. NO. PART.NO DESCRIPTION C713 C714 C717 C718 C719 1-101-004-00 1-104-665-11 1-102-114-00 1-102-114-00 1-102-114-00 C1803 C1804 C1805 1-101-005-00 CERAMIC 1-126-964-11 ELECT 1-137-366-11 MYLAR CERAMIC ELECT CERAMIC CERAMIC CERAMIC REMARK 0.01UF 100UF 470PF 470PF 470PF 20.00% 10.00% 10.00% 10.00% 0.022UF 10UF 0.0022UF 50V 20.00% 50V 5.00% 50V REF. NO.
The components identified by shading and marked are critical for safety Replace only with the part number specified. C REF. NO. PART.NO DESCRIPTION REMARK R720 R721 R722 R723 R724 1-249-421-11 1-249-405-11 1-249-393-11 1-249-393-11 1-249-393-11 CARBON CARBON CARBON CARBON CARBON 2.2K 100 10 10 10 5% 5% 5% 5% 5% 1/4W 1/4W 1/4W 1/4W 1/4W R726 R727 R728 R729 R730 1-215-871-11 1-249-409-11 1-216-372-11 1-249-414-11 1-247-807-31 METAL OXIDE CARBON METAL OXIDE CARBON CARBON 2.2K 220 1.
A new TV Repair Assistance Tool that combines ease of use and powerful PC software tools to allow you to save valuable time during many TV repairs. The TRACE interface connects to the PC's serial port. It provides connection to the TV's I2C bus and can be provided with an InfraRed transmitter (optional). The interface is powered by a standard 9 V PP3 battery for portable use, and can also be powered by an external 9V/25mA DC power supply.
