Sony KV-HF21M80 SECTION 2 DISASSEMBLY

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KV-HF21M80

RM-952

SECTION 2DISASSEMBLY

2-2. CHASSIS ASSY REMOVAL

1 Chassis assy

Lever

2-1. REAR COVER REMOVAL

1 Eight screws

(+BVTP 4 × 16)

1 Two screws

(+BVTP 4 × 16)

2 Rear cover

2-3. F BRACKET REMOVAL

1 Three connectors

2 F board

Lever

One screw

(+BVTP 4x16)

2-4. SERVICE POSITION

(Note: Remove F Bracket first.)

Contents

Main SERVICE MANU AL KV-HF21M80 SPECIFICATIONS Page SELF DIAGNOSTIC FUNCTION 1. DIAGNOSTIC TEST INDICATORS 2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT 3. STOPPING THE STANDBY/TIMER FLASH 4. SELF-DIAGNOSTIC SCREEN DISPLAY 5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY 6. SELF-DIAGNOSTIC CIRCUIT [+BovercurrentOCP] [Verticaldeflectionstopped] [Verticaldeflectionovercurrent] [Whitebalancefailure] SECTION 1 GENERAL If you wish to connect a VCR, see the Connecting a VCR diagram below. 2 WARNING 4 Connecting the 3D WOOFER You can enjoy high quality sound by connecting the 3D WOOFER. 12 Attach the 3D WOOFER into the footholds on the top of your TV. Securing the TV To prevent the TV from falling, secure the TV using one of the following methods: or AB Use only the supplied screws. Use of other screws may damage the TV. Presetting channels Presetting channels automatically To preset channels automatically from a specified program number 10 Presetting channels (continued) Watching the TV 11 To change the color system setting Skipping program numbers To preset the skipped program number again Additional tasks Changing the on-screen display language 14 Setting the Wake Up timer To cancel the Wake Up timer Customizing the picture and sound Selecting the picture and sound modes To select the picture mode To select the sound mode 16 Viewing your favorite channels Selecting a favorite channel Changing the favorite channel setting Blocking the channels (CHILD LOCK) Additional Information Self-diagnosis function Check that the u indicator flashes red a number of times between 3-second intervals. Count the number of times the u indicator flashes. Press U (main power) to turn off your TV. Additional Information 21 22 Troubleshooting (continued) Identifying parts and controls Front panel U 2 Remote Control SECTION 2 DISASSEMBLY 2-5. REPLACEMENT OF PARTS 2-6. TERMINAL BRACKET REMOVAL 2-7. DEGAUSS COIL REMOVAL KV-HF21M80 2-8. PICTURE TUBE REMOVAL REMOVAL OF ANODE-CAP HOW TO HANDLE AN ANODE-CAP REMOVING PROCEDURES SECTION 3 SET-UP ADJUSTMENTS } 3-1. BEAM LANDING 3-2. CONVERGENCE 4 1 3 2 4 YCH TLV RB TLVYCH B R Page CIRCUIT ADJUSTMENTS 4-1. ADJUSTMENTS WITH COMMANDER RM-952 a. ENTERING SERVICE MODE [MUTING] 4-2. ADJUSTMENT METHOD Page Page Page Page SUB HUE ADJUSTMENT 4-3. PICTURE QUALITY ADJUSTMENTS SUB COLOR ADJUSTMENT BELL FILTER ADJUSTMENT 4-4. A BOARD ADJUSTMENT AFTER IC003 (MEMORY) REPLACEMENT 4-5. PICTURE DISTORTION ADJUSTMENT Item Number 00 0B 38 37 39 SECTION 5 DIAGRAM C3 VM1 AUDIO PROSESSOR F 41 40 42 RM-952 KV-HF21M80 5-3. CIRCUIT BOARDS LOCATION C3 VM1 * 44 A BOARD WAVEFORMS A ( ?A (1/2) board A (2/2) board / 2.8 2.2 ( TO V1 BOARD TO V1 BOARD CN801 5V 5V 30V 30V 30V 9V 9V ( B-SSS10315-VT.-A.HF21 TO DGC ( 49 48 50 123456789101112 13 14 15 16 17 18 19 20 21 22 TO DY TO COATING EARTH A A Board PRINTED WIRING BOARD A BOARD IC ( 9V IK B DRIVER G DRIVER ( 58 57 59 A ANODE CATHODE VM 61 60 62 SECTION 6 EXPLODED VIEWS 63 SECTION 7 ELECTRICAL PARTS LIST A 64 65 66 67 68 69 A C 70 F C 71 VM 72 73