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CHASSIS
SERVICE MANUAL
BG-3S
MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO.
KV-HF21M80 RM-952 Vietnam SCC-U28EA-A
TRINITRON ® COLOR TV
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KV-HF21M80 RM-952 SPECIFICATIONS Note Power requirements 110-240 V AC, 50/60 Hz Power consumption (W) Indicated on the rear of the TV Television system B/G, I, D/K, M Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 Channel coverage B/G VHF: E2 to E12 / UHF: E21 to E69 / CATV: S01 to S03, S1 to S41 I UHF: B21 to B68 / CATV: S01 to S03, S1 to S41 D/K VHF: C1 to C12, R1 to R12 / UHF: C13 to C57, R21 to R60 CATV: S01 to S03, S1 to S41, Z1 to Z39 M VHF: A2 to A13 / UHF: A14 to A79 / CATV: A-8 to
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KV-HF21M80 RM-952 TABLE OF CONTENTS Section Title Page Section Title Page SELF DIAGNOSIS FUNCTION ................................ 4 5. DIAGRAMS 5-1. Block Diagram ......................................................... 37 1. GENERAL ........................................................................ 8 5-2. Frame Schematic Diagram ...................................... 40 5-3 Circuit Boards Location .......................................... 42 2. DISASSEMBLY 5-4. Schematic Diagrams and P
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KV-HF21M80 RM-952 SELF DIAGNOSTIC FUNCTION The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically begin to flash. The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the remote commander can be used to review the failure occu
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KV-HF21M80 RM-952 2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT 2 times 5 times Lamp ON 0.3 sec. Lamp OFF 3 sec. Lamp OFF 0.3 sec. STANDBY/SLEEP lamp Diagnostic Item Flash Count* +B overcurrent/overvoltage 2 times Vertical deflection stopped White balance failure 5 times * One flash count is not used for self-diagnostic. 3. STOPPING THE STANDBY/TIMER FLASH Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp from flashing. – 5 –
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KV-HF21M80 RM-952 4. SELF-DIAGNOSTIC SCREEN DISPLAY For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurances of failure for confirmation on the screen: [To Bring Up Screen Test] In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below: [Screen display] / channel [5]/ Sound volume[-] / Power ON ˘ Note that this differs from entering the service mode
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KV-HF21M80 RM-952 6. SELF-DIAGNOSTIC CIRCUIT IC301 IC001 IC003 Y/CHROMA JUNGLE SYSTEM MEMORY FROM 21 IK-IN IO-8DAT 45 5 B-DAT CRT FROM MP/ [+B] Q604 C3 18 O-LED 51 PROTECT SDA 35 46 IO-SDAT [V] Q509/507 [+B overcurrent ªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven verticals in a period, the unit will automatically turn off. [Vertical deflection stopped] Occurs when an ab
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KV-HF21M80 RM-952 – 8 – The operating instructions mentioned here are partial abstracts SECTION 1 from the Operating Instruction Manual. The page numbers of the Operating Instruction Manual remain as in the manual. GENERAL Using Your New TV WARNING • Dangerously high voltages are present inside the TV. Getting Started • Operate the TV only between 110 – 240 V AC. Step 1 Connect the antenna If you wish to connect a VCR, see the “Connecting a VCR” diagram below. Do not open the cabinet and
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KV-HF21M80 RM-952 Ω Using Your New TV – 9 – Connecting the 3D WOOFER Notes • If you connect a monaural VCR, connect the yellow plug to (the yellow jack) and the black plug to -L (MONO) (the white jack). • If you connect a VCR to the ˘ (antenna) terminal, preset the signal output from the VCR to the program number 0 on the TV. You can enjoy high quality sound by connecting the 3D WOOFER. • When no signal is input to the connected video equipment, the TV screen becomes blue. 3D WOOFER CAUTION R
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KV-HF21M80 RM-952 Using Your New TV – 10 – Securing the TV Connecting optional components You can connect optional audio/video components, such as a VCR, multi disc player, To prevent the TV from falling, secure the TV using one of the following methods: camcorder, video game or stereo system. To watch the picture of the connected equipment, press … (see page 13). With the supplied screws, attach the band to the TV stand and to the rear of A Connecting a camcorder/video game equipment the TV us
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KV-HF21M80 RM-952 Using Your New TV – 11 – Presetting channels (continued) Presetting channels u Presetting channels manually Press SELECT until SELECT You can preset up to 100 TV channels in 1 1 2 3 “MANUAL PROGRAM” numerical sequence from program b 4 5 6 Number buttons appears. MANUAL PROGRAM number 1 using the remote and the buttons on your TV as well. 7 8 9 ÷ JUMP 0 Press + or –. SOUND Á PROGR 2 . +/– MODE b VHF LOW B/G PROGR +/– SELECT Press PROGR +/– or the 1 2 3 3 PIC MODE PROGR number bu
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KV-HF21M80 RM-952 Using Your New TV – 12 – ¤ Watching the TV To change the color system setting If the color is abnormal when receiving programs through the ˘ (antenna) terminal u or the … (video input) jack This section explains functions used … while watching the TV. Most operations ; (1) Press SELECT until “COL SYS” appears. can be done using the remote. 1 2 3 4 5 6 Number buttons COL SYS: AUTO 7 8 9 (2) Press + or – to select the appropriate color system until the color is optimal. ÷ JUMP J
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KV-HF21M80 RM-952 Using Your New TV – 13 – Watching the TV (continued) Additional tasks Setting the Wake Up timer To Do this Turn off temporarily Press u. The u indicator on the TV lights up red. Press until the WAKE UP TIMER:10M 1 desired period of time Turn off completely Press U on the TV. After 10 minutes appears. Mute the sound Press ¤. The Wake Up timer starts Press … to select “VIDEO 1” or “VIDEO 2”. Watch the video input immediately after you have (VCR, camcorder, etc.) To return to the
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KV-HF21M80 RM-952 Advanced Operations – 14 – Advanced Operations Customizing the picture and sound (continued) Customizing the SOUND Á PROGR MODE picture and sound SOUND MODE Adjusting the picture and sound settings SELECT You can customize the picture and Press SELECT until the SELECT + or – 1 sound by selecting the picture and desired setting appears. PIC MODE sound modes or by adjusting its FAVORITE PICTURE 60 settings. You can change the sound effect by PICTURE COLOR BRIGHT HUE* Each time y
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KV-HF21M80 RM-952 Advanced Operations – 15 – Viewing your Blocking the 1 2 3 Number favorite channels channels 4 5 6 buttons 7 8 9 (CHILD LOCK) JUMP ÷ 0 1 2 3 SOUND Á PROGR You can display six of your favorite MODE 4 6 5 You can prevent a child from watching channels for quick and easy selection. PROGR +/– certain channels by using the buttons on You can change the favorite channel 7 8 9 the remote control. setting as well. JUMP ÷ 0 SOUND Á PROGR + or – MODE FAVORITE Selecting a favorite chann
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KV-HF21M80 RM-952 Additional Information – 16 – Additional Information Self-diagnosis Troubleshooting function If you find any problem while viewing your TV, please check the following guide. If any problem persists, contact your Sony dealer. Your TV is equipped with a self-diagnosis function. If there is a Symptom Solutions Possible cause problem with your TV, the u indicator flashes red. The number of Snowy picture • Check the antenna cable and connection • Connection is loose or the times the
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KV-HF21M80 RM-952 – 17 – Troubleshooting (continued) Symptom Possible cause Solutions Good picture • Press ¸ + to increase the volume level. • The volume level is too low. Symptom Solutions Possible cause • Press ¤ to cancel the muting. • The sound is muted. Picture slant • Press SELECT until “PIC ROTATION” • The terrestrial magnetism (KV-XF21M83/ appears on the screen, then press + or – affects your TV set. XF21M80 only) to align the picture to the TV screen. (page 13) No sound Dotted lines or
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KV-HF21M80 RM-952 – 18 – Identifying parts and controls Remote Control Refer to the pages indicated in parentheses ( ) for details. 9 Front panel !º 1 !¶ 2 !¡ 1 2 3 1 2 3 4 5 6 4 5 6 3 7 8 9 7 8 9 JUMP ÷ JUMP ÷ 0 0 4 !™ SOUND Á PROGR SOUND Á PROGR !§ MODE MODE 5 ONE-PUSH AUTOMATIC PROGRAMING !£ 6 !¢ 2 7 FAVORITE FAVORITE !∞ 8 ONE-PUSH AUTOMATIC PROGRAMMING TV TV 1u (power) button (12) !§ SOUND MODE button (15) 2; (TV) button (13) !¶ Teletext operation buttons 3 Number buttons (12) (not us
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KV-HF21M80 RM-952 – 19 – SECTION 2 DISASSEMBLY 2-1. REAR COVER REMOVAL 2-3. F BRACKET REMOVAL 2 Rear cover 2 F board 1 Three connectors Lever 1 Two screws (+BVTP 4 × 16) One screw 1 Eight screws (+BVTP 4x16) (+BVTP 4 × 16) 2-2. CHASSIS ASSY REMOVAL 2-4. SERVICE POSITION (Note: Remove F Bracket first.) Lever Lever 1 Chassis assy
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KV-HF21M80 RM-952 – 20 – 2-5. REPLACEMENT OF PARTS 2-6. TERMINAL BRACKET REMOVAL For replacement of the Multi Button. unscrew it to exchange with new parts, and fix it with screws (+BVTP). Terminal board bracket 2-5-1. REPLACEMENT OF MULTI BUTTON Multi button One screw (+BVTP 4x16) A board Two screws (+BVTP 3 × 12) 2-7. DEGAUSS COIL REMOVAL 2-5-2. REPLACEMENT OF LIGHT GUIDE For replacement of Light Guide, pull it out to exchange with the new part. 1 Demagnetization coil Light guide 2 Tension spr
