Summary of Contents for KLH KT2006
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Page 1: Service Manual
SERVICE MANUAL FILE NO. SM-CTV-O-034 COLOR TELEVISION SERVICE MANUAL MODEL NO. KT2006 CHASSIS NO. CN-12C1 Please read this manual carefully before service. -
Page 2: Table Of Contents
SERVICE MANUAL TABLE OF CONTENTS SPECIFICATIONS ..........................1 SAFETY INSTRUCTIONS AND MAINTENANCE ...........…..2 X-Ray Radiation Precaution ........................2 Safety Precaution ........................……………..2 Product Safety Notice ........................………..3 Maintenance ........................……………………3 ADJUSTMENTS .......................…………….4 Circuit Adjustments ......................…………….4 Set-up Adjustments ......................…………….5 Service Mode and Bus Data ....................…………….8 CONTROL BUTTONS ....................………………11 Control Buttons ....................………………………….…11... -
Page 3: Specifications
SERVICE MANUAL MODEL KT2006 Television system NTSC-M Channel coverage VHF 2~13, UHF 14~69 Mid Band (A-8~A-1, A~I); Super Band (J~W) Cable TV coverage Hyper Band (AA~ZZ, AAA, BBB) Ultra Band (65~94, 100~125) Channels preset Antenna input 75 ohm (unbalanced) Screen dimensions 406¡... -
Page 4: Safety Instructions And Maintenance
SERVICE MANUAL SAFETY INSTRUCTIONS WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAUTION” AND “PRODUCT SAFETY NOTICE” INSTRUCTIONS BELOW. X-RAY RADIATION PRECAUTION 1. The EHT must be checked every time the TV is serviced to ensure that the CRT does not emit X-ray radiation as result of excessive EHT voltage. -
Page 5: Product Safety Notice
SERVICE MANUAL CAREFULLY BEFORE OPERATING AND SERVICING THIS TV SET. 1. Many electrical and mechanical components in this chassis 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 replacements rated at higher voltages or wattage, etc. -
Page 6: Circuit Adjustments
SERVICE MANUAL CIRCUIT ADJUSTMENTS 1. General Description All adjustments are thoroughly checked and corrected before the TV outgoing. Therefore the TV should operate normally and deliver proper colour pictures upon installation. However, several minor adjustments may be required depending on the particular location where the TV is operated. This TV is shipped completely in carton. -
Page 7: Set-Up Adjustments
SERVICE MANUAL Before Adjusting After Adjusting SET-UP ADJUSTMENTS ● The following adjustments should be made when a complete realignment is required or a new CRT is installed. Perform the adjustments in order as follows. 1. Colour purity 2. Convergence 3. White Balance Note: The purity/convergence magnet assembly and rubber wedges need mechanical positioning. - Page 8 SERVICE MANUAL Fixed 4-pole Magnet Adjust the Angle (Vertical Lines) Rotate Two Tabs At the Same Time (Horizontal Lines) Purity Magnet Adjustment of Magnets Convergence Magnet Assembly Fig. 2 2. Convergence Adjustment Note: Before attempting any convergence adjustment, the TV should be operated for at least 15 minutes. ●...
- Page 9 SERVICE MANUAL Red/BLU 4-pole Magnet Movement 6-pole Magnet Movement Center Convergence by Convergence Magnets Incline the Yoke up (or down) Incline the Yoke Right(or left) Circumference Convergence by DEF Yoke Fig. 3 SERVICE MODE AND BUS DATA...
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Page 10: Service Mode And Bus Data
SERVICE MANUAL 1. How to Enter the Service Mode with the Remote Control 1) Decrease volume to 0. 2) Press the MUTE button on the remote control and VIDEO button on the TV at the same time. 3) Adjust the TV with the MENU SELECT buttons on the remote control. 4) Press the button on the remote control to quit the Service mode. - Page 11 SERVICE MANUAL OPT.VID SW MENU. 10 OPT.TV.AV OPT.AV1/2 OPT.AV3 OPT.COLOR OPT.V-CHIP OPT.CCD OPT.CLOCK SRCH.SPEED OPT.P-ON ROM CORREC Notes: ¢ Ù The data sheet may differ dependent on different models. ¢ Ú The data sheet may differ dependent on different CRTs for the same model. 3.
- Page 12 SERVICE MANUAL Enter the TV to the Service mode and receive Philips test pattern. Select “H.PH/60H” by pressing the ¡ û /¡ ú buttons on the remote control, and adjust horizontal picture position in the centre of screen by pressing the data adjustment buttons.
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Page 13: Control Buttons
SERVICE MANUAL Control Buttons 1.Control Buttons 1.1 Front panel STANDBY INFRARED SENSOR POWER INDICATOR TV/VIDEO SELECT VOLUME DOWN/UP MENU SELECT CHANNEL DOWN/UP 1.2 Side panel 1.3 Rear panel... -
Page 14: Remote Control
SERVICE MANUAL 2. Remote Control FUNCTION Used for volume control and child lock KEYPAD Use to select channels by number 100+ Three digit select FUNCTION STANDBY TIMER Accesses the Timer menu ARROWS Used to navigate the TV menus KEYPAD SCAN Scans all the active channels CH+/- PICTURE... -
Page 15: Structure And Chassis Function Description
SERVICE MANUAL STRUCTURE AND CHASSIS FUNCTION DESCRIPTION 1. Structure Block Diagram... -
Page 16: Block Diagram For Supply Voltage System
SERVICE MANUAL 2. Block Diagram for Supply Voltage System... -
Page 17: Block Diagram For Remote Control System
SERVICE MANUAL 3. Block Diagram for Remote Control System... -
Page 18: Chassis Description
SERVICE MANUAL 4. Chassis Description This TV uses CN-12C1 chassis which mainly includes a small signal processor LA76814 (N101), microcontroller LC863248A, vertical output circuit LA7840 and sound power amplifier TDA7056B. LA76814, a small signal processing chip developed by Japan-based Sanyo, is designed for use in NTSC televisions, featuring high-integrity, performance &... -
Page 19: Service Data
SERVICE MANUAL SERVICE DATA Technical Data of Key ICs LA76814 Small Signal Processing IC 1. Introduction of LA76814 IC LA7684 is a NTSC-M only system color TV specific monolithic IC developed by SANYO Co., which is controlled by Inter IC Bus. LA76814 includes a IF processing circuit£ ¬ a luminance and chroma signal processing circuit, horizontal/frame scanning small signal processing circuit, etc. - Page 20 SERVICE MANUAL 2. Block Diagram 3. Refer to Table 2 about Functions and Service Data of LA76814's Pins.
- Page 21 SERVICE MANUAL TDA7056B 5W mono BTL audio amplifier with DC volume 2. General Description control The TDA7056B is a mono Bridge-Tied Load (BTL) 1. Features output amplifier with DC volume control. ¡ ¤ DC volume control It is designed for use in TV and monitors, but is also ¡...
- Page 22 SERVICE MANUAL LC86F3248A (D701) 8-Bit Single Chip Microcontroller 1. Overview The LC863264/56/48/40A are 8-bit single chip microcontrollers with the following on-chip functional blocks: -CPU: Operable at a minimum bus cycle time of 0.42¦ Ì s -On-chip ROM capacity Program ROM: 64K/56K/48K/40K bytes CGROM: 16K bytes -On-chip RAM capacity: 640 bytes -OSD RAM: 352×9 bits...
- Page 23 SERVICE MANUAL AT24C08 (D702) EEPROM 1. Features ¡ ¤ Data EEPROM internally organized as 1024/2048 2.Pin Configuration bytes and 64/128 pages×16 bytes ¡ ¤ Page protection mode, flexible page-by-page hardware write protection ¡ ª Additional protection EEPROM of 64/128 bits, 1 bit per data page ¡...
- Page 24 SERVICE MANUAL LA7840 (N301) Vertical Deflection Output Circuit 1. Features ¡ ¤ Low power dissipation due to built-in pump-up circuit ¡ ¤ Vertical output circuit ¡ ¤ Thermal protection circuit built in ¡ ¤ Excellent crossover characteristics ¡ ¤ DC coupling possible 2.Block Diagram Fig.
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Page 25: Service Data Of Key Ics
SERVICE MANUAL Service Data of Key ICs Table 2 Functions and Service Data of LA76814 (N101)’s Pins GDM8145 Multimeter Ground Resistance (K¦ ¸ ) Measure with red Measure with Pin No. Function Description Voltage of Pin probe while black probe while grounding black grounding... - Page 26 SERVICE MANUAL GDM8145 Multimeter Ground Resistance (K¦ ¸ ) Measure with Measure with Pin No. Function Description Voltage red probe while black probe Pin (V) grounding black while grounding probe. red probe. Deflection circuit ground 6.46 6.09 X-ray detector filter Killer filter 7.06 APC filter of sub-carrier restorer...
- Page 27 SERVICE MANUAL Table 3 Functions and Service Data of TDA7056B(N191)’s Pins Digital Multimeter Function Description Reference Voltage(V) Positive Resistance(K¦ ¸ ) Negative Resistance(K¦ ¸ ) Not connected ¡ Þ ¡ Þ Positive supply voltage 15.5 Voltage input 1130 Signal ground DC Volume control Positive output Power ground...
- Page 28 SERVICE MANUAL AFT voltage input terminal 4.02 Ground Button-control voltage input terminal 5.23 Reset terminal 4.69 Filter 12.27 Video signal input terminal 12.47 4.46 Vertical flyback pulse input terminal 16.8 5.21 Horizontal flyback pulse input terminal 16.7 5.62 R character output terminal G character output terminal 5.09 B character output terminal...
- Page 29 SERVICE MANUAL Table 5 Functions and Service Data of AT24C08 (D702)’s Pins GDM8145 Multimeter Ground Resistance (K¦ ¸ ) Measure with red Measure with Pin No. Function Description Voltage of Pin probe while black probe while grounding black grounding probe. probe.
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Page 30: Waveforms Of Key Points
SERVICE MANUAL Waveforms of Key Points 1. D701 (5) (10) (11) (29) (30) (41) (42) 2. N101 (19) (20) (21) (23) (27) (28) (38) (46) 3. N301 (5) (2) 4. V431 (B) (C),V432 (B) (C) - Page 31 SERVICE MANUAL...
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Page 32: Replacement Of Parts
SERVICE MANUAL Replacement of Parts 1£ ® Description Many electrical and mechanical components in this chassis have special safety-related characteristics. Components which have these special safety characteristics in this manual and its supplements are identified by the international hazard symbols or UL, FCC, FDA or VDE marking on the circuit diagram and parts list. When replacing any of these components, substitute the one which has the same safety characteristics as specified in the manual. - Page 33 5/27/2003 2235 East Frances Street, Ontario, CA 91761 APEX DIGITAL TELEVISION In-Warranty Schedule by Model Carry-In Stock REIMBURSEMENT RATES LIMITED WARRANTY In Home Remote Service Repair Product Model No. Control Model Carry-In Home Service Stock Remote Parts Labor Yes/No Yes/No Yes/No Control Minor...
- Page 34 5/27/2003 Carry-In Stock REIMBURSEMENT RATES LIMITED WARRANTY In Home Remote Service Repair Product Model No. Control Model Carry-In Home Service Stock Remote Parts Labor Yes/No Yes/No Yes/No Control Minor Major Minor Major Repair 32 inch GT3215 UK1A PF3225 CHKT1A PROJECTION GB4308 CHKT2A GB43HD09...
- Page 35 Group component lists of AT2008&AT2008S&KT2006 Part name CRT Type TYPE: K12B-C1; When using CPU CH04T1228 Remote control TYPE:K12B-C2; When using CPU CH04T1222 Remote control For large-neck CRT, including Samsung, LG, Phillips, Thai, and Seg Hatachi CRT CRT assembly For small-neck IRICO or Shanghai Novel CRT...
- Page 36 JUC7.820.690 $98.00 8667211330C02 JUC7.820.690 $98.00 8667211330C03 JUC7.820.690 8667211330C04 $98.00 JUC7.820.829 8667211330C11 $98.00 JUC7.820.829 $98.00 8667211330C12 JUC7.820.829 8667211330C13 $98.00 JUC7.820.829 $98.00 8667211330C14 $98.00 JU7.820.1808 8667214210C01 8667214210C02 $12.24 JU7.820.1630 For AT2008S only,JUC7.820.406 8667206640C01 $12.24 $12.24 For AT2008/KT2006 only,JUC7.820.406 8667206880C02 $12.24 JUC7.820.258 8667211380C...