Sony TRINITRON KV-VF21M40 Service Manual
  1. Manuals
  2. Brands
  3. Sony Manuals
  4. TV
  5. TRINITRON KV-VF21M40
  6. Service manual
Sony TRINITRON KV-VF21M40 Service Manual

Sony TRINITRON KV-VF21M40 Service Manual

Trinitron color video tv, bc-4a chassis
Hide thumbs Also See for TRINITRON KV-VF21M40:
Table of Contents

Advertisement

Quick Links

SERVICE MANUAL

MODEL
COMMANDER
KV-VF21M40
RM-956
KV-VF21M70
RM-956
KV-VF21M70
RM-956
EJECT
Z
PIC MODE
TAPE SPEED
zREC
REW
m
MENU
COUNTER RESET
t
1
4
7
-/--
2
RM-955
Please file according to model size. ....
21
DEST. CHASSIS NO.
E
SCC-P10A-A
ME
SCC-P11A-A
JE
SCC-P12A-A
EJECT
Z
PIC MODE
TIMER REC G-CODE ON/OFF
TIMER REC G-CODE ON/OFF
TAPE SPEED
INDEX
zREC
INDEX
.
>
.
>
X PAUSE
X PAUSE
PLAY
FF
REW
PLAY
FF
H
M
m
H
M
ENTER
ENTER
x STOP
x STOP
A/B
MENU
COUNTER RESET
GAME
t
GAME
2
3
1
2
3
5
6
4
5
6
8
9
7
8
9
0
C
-/--
0
C
2
PROGR
PROGR
RM-956
BC-4A
MODEL
COMMANDER
KV-VF21M70
RM-956
KV-VF21M77
RM-955
TRINITRON
COLOR VIDEO TV
®
CHASSIS
DEST. CHASSIS NO.
HK
SCC-P09B-A
HK
SCC-P09A-A
PAL NTSC
®
(VF21M77 ONLY)

Advertisement

Table of Contents
loading

Related Manuals for Sony TRINITRON KV-VF21M40

Summary of Contents for Sony TRINITRON KV-VF21M40

  • Page 1: Service Manual

    SERVICE MANUAL MODEL COMMANDER KV-VF21M40 RM-956 KV-VF21M70 RM-956 KV-VF21M70 RM-956 EJECT EJECT PIC MODE PIC MODE TIMER REC G-CODE ON/OFF TIMER REC G-CODE ON/OFF TAPE SPEED TAPE SPEED zREC INDEX zREC > X PAUSE PLAY ENTER x STOP MENU COUNTER RESET MENU COUNTER RESET GAME...
  • Page 2 TV Section Television system B/G, I, D/K, M Color system PAL/SECAM and NTSC /NTSC 3.58 Bilingual system NICAM bilingual I (VF21M77 ONLY) Channel coverage See “Receivable channels and channel display” Picture tube Trinitron 21 inches (approx. 50.7 cm measured diagonally) Antenna in 75-ohm antenna socket for VHF/UHF...
  • Page 3 Receivable channels and channel display System Area B/G, H Middle East/Asia Indonesia Morocco CATV Hong Kong/ United Kingdom Ireland South Africa Angola CATV D/K, K1 East European coutries China Ivory Coast CATV America CATV Channel coverage Channel display E-2 to E-12 C02 to C12 E-21 to E-69 C21 to C69...

  • Page 4: Table Of Contents

    COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUP- PLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN THIS MANUAL.
  • Page 5 OUTLINE • The units in this manual contain a self-diagnostic function. • If an error occurs, the STANDBY 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 lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference.
  • Page 6 DISPLAY OF STANDBY LIGHT FLASH COUNT * One flash count is not used for self-diagnostic. < Diagnostic Item > • +B OCP/OVP • Vertical deflection stopped STANDBY lamp (RED) • White balance failure STOPPING THE STANDBY FLASH • Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY lamp from flashing. SELF-DIAGNOSTIC SCREEN DISPLAY •...
  • Page 7 SELF-DIAGNOSTIC CIRCUIT LED flash STANDBY lamp D1308 RY601 RELAY Q601 STOP • IC301 Y/C/J PROTECT VM OUT R,G,B STOP Q502 Q501 R510 C505 D502 Owing to current increase voltage of R615 decrease and that it make PM601 pin 8 to [+B overcurrent] become LOW and OFF RY601.
  • Page 8 1-1. KV-VF21M40/VF21M70 Getting Started Step 1: Preparation Check the supplied accessories When you have taken everything out of the carton, check that you have these items: • Remote control • Two R6 (size AA) batteries • Stabilizer band • Two clamps •...
  • Page 9 Step 3: Connecting the antenna For better TV reception and clear recordings, connect an outdoor antenna to your video TV. Connecting an outdoor antenna To connect a VHF antenna or a combination VHF/UHF antenna—75-ohm coaxial cable (round) Attach an IEC antenna connector to the 75-ohm coaxial cable. Plug the connector into the 8 (antenna) socket of the video TV.
  • Page 10 Step 4: Selecting the language (continued) Press M or m to select LANGUAGE/ , then press ENTER. PLAY PLAY The selected item turns ENTER ENTER red. Press M or m to select , then press ENTER. The menu language changes to Chinese. To return to the normal screen Press MENU.
  • Page 11 Step 5: Setting the clock (continued) Press M, m or , to set the month, year, hour and minutes in the same way as in step 5, then press ENTER. The clock starts working. To return to the normal screen Press MENU.
  • Page 12 Step 6: Setting the channels (continued) Press M or m to select AUTO PROGRAM, then press ENTER. PLAY PLAY ENTER ENTER Presetting starts from program position 1. The preset program and channel numbers are displayed on the screen in sequence. When presetting is finished, program position 1 appears again.

  • Page 13: Basic Operations

    Basic Operations Watching the TV EJECT This section explains various functions used while watching the TV. Most operations can be done using the remote PIC MODE TIMER REC G-CODE TAPE SPEED control. zREC INDEX > X PAUSE PLAY ENTER x STOP MENU COUNTER RESET -/--...

  • Page 14: Playing A Tape

    Playing a tape This section shows you how to play a tape. Other convenient functions you can use while playing a tape are explained in “Additional Operations.” EJECT PIC MODE TIMER REC G-CODE TAPE SPEED zREC INDEX > X PAUSE PLAY ENTER x STOP...

  • Page 15: Recording Tv Programs

    Playing a tape (continued) Displaying on-screen information Press to display the following on-screen information. To show only the amount of remaining tape and the linear tape counter on the screen, press again. To make the information disappear, press displayed on the screen. Amount of remaining tape Beginning of the tape 27.11 SAT...
  • Page 16 Recording TV programs (continued) Press REC z. zREC The REC indicator lights up and recording begins. Note • You can also select the channel number directly with the number buttons. Press C (once for regular channels, twice for cable channels), the desired number buttons, then ENTER.
  • Page 17 Recording TV programs (continued) Recording using QUICK-TIMER The Quick-Timer recording function allows you to preset your video TV to record one program within a 24-hour period. For setting the Quick-Timer, use QUICK TIMER on the video TV. Before you begin •...
  • Page 18 Recording TV programs (continued) The QUICK TIMER button changes the following when turned clockwise or counterclockwise • When setting the start time: The hour increases or decreases by one hour. The minutes increase or decrease by one minute. • The recording time period: Increases or decreases by 15 minutes.
  • Page 19 Recording TV programs (continued) Recording TV programs using the timer You can preset up to five programs within a one-month period. Before you begin • When the TV is in standby mode (the 1 indicator on the video TV is lit in red), press ?/1 , PROGR +/– or a number button on the remote control.
  • Page 20 Recording TV programs (continued) Checking/adding/ PIC MODE TAPE SPEED TIMER REC G-CODE ON/OFF changing/canceling zREC INDEX the timer settings > X PAUSE PLAY ENTER x STOP MENU COUNTER RESET Press TIMER REC. To exit the PROGRAM TIMER REC LIST after checking the settings, skip steps 2 and 3.
  • Page 21 Adjusting the TV (continued) Presetting channels manually Preset the channels manually if you want to select channels that were not set automatically or if you want to allocate program numbers to channels one by one. Press MENU. Press M or m to select , then press ENTER.
  • Page 22 Adjusting the TV (continued) Skipping program positions You can skip unused program positions when selecting a program with the PROGR +/– buttons. However, the skipped programs may still be called up when you select them with the number buttons. Press MENU. Press M or m to select , then press ENTER.
  • Page 23 Adjusting the TV (continued) Adjusting the color system Normally set the color system to AUTO. However, when the picture has no color, manually select the appropriate color system for your area. Press MENU. Press M or m to select , then press ENTER. Make sure TV SET UP is selected, then press ENTER.
  • Page 24 Adjusting the TV (continued) Adjusting the alignment of the picture EJECT The picture may be out of alignment due to influence from the earth’s magnetic PIC MODE field in relation to the position of the TV. TIMER REC G-CODE TAPE SPEED You can adjust the angle of the picture if zREC INDEX...
  • Page 25 Tape options (continued) Adjusting with Adaptive Picture Control (APC) This function allows you to improve playback and recording quality automatically according to the condition of the video tape. This function is set to ON at the factory. To maintain better picture quality, it is advisable to leave the function on.
  • Page 26 Additional Operations When connecting to a Sony VCR If you use this video TV with another Sony VCR, the remote control may accidentally operate both the video TV and VCR at the same time. To prevent this from happening, set VHS to SONY so that the remote control operates only this video TV.

  • Page 27: Switching Off Automatically

    Tape options (continued) Setting the color system Normally set COL SYS in the menu to AUTO. If streaks appear during playback, set COL SYS to correspond to the system that the tape was recorded in. Press MENU. Press M or m to select , then press ENTER.
  • Page 28 Switching on automatically EJECT — ON TIMER PIC MODE TAPE SPEED TIMER REC G-CODE ON/OFF zREC INDEX You can preset your video TV to > X PAUSE automatically switch on at a desired time. You can select the TV program, PLAY video playback or input source to be ENTER...

  • Page 29: Connecting Optional Equipment

    Searching using the index EJECT function PIC MODE TAPE SPEED TIMER REC G-CODE ON/OFF zREC The video TV marks the tape with an INDEX > X PAUSE index signal at the point where each recording begins. Use these signals as PLAY references to find a specific recording.
  • Page 30 Connecting optional equipment (continued) To watch the video input signal Press t so that t1 or t2 appears on the screen. EJECT PIC MODE TAPE SPEED TIMER REC G-CODE ON/OFF zREC INDEX > X PAUSE PLAY ENTER x STOP MENU COUNTER RESET GAME Additional Operations...

  • Page 31: Self Diagnosis Function

    Count the number of times the indicator flashes. Press ?/1 to turn off your video TV. Inform your nearest Sony service facility about the number of times the indicator flashes. Be sure to note the model name and serial number located on the rear of your video TV.
  • Page 32 (a standard service fee will be charged). Do not use any commercially available liquid type cleaning cassettes other than Sony’s, as it may damage the video heads. The video heads may be The video heads may have to be worn out.

  • Page 33: Identifying Parts And Controls

    Troubleshooting (continued) Symptom Possible cause Recording section Cover the safety tab hole with The cassette is ejected The safety tab of the cassette has adhesive tape, or use another when you press REC been removed. cassette with its safety tab intact. Cannot record.
  • Page 34 Identifying parts and controls (continued) PLAY PAUSE TIMER REC QUICK TIMER PROGR GAME PUSH qs qd qf qg 7 GAME button (13, 49) qf 1 (standby) indicator (14) 8 t (input select) button (48) qg Remote control sensor 9 2 (volume) +/– buttons (15) qh TIMER REC (recording) indicator (27) q;...

  • Page 35: Kv-Vf21M77

    1-2. KV-VF21M77 Getting Started Step 1: Preparation Check the supplied accessories When you have taken everything out of the carton, check that you have these items: • Remote control • Two R6 (size AA) batteries • Stabilizer band • Two clamps •...
  • Page 36 Step 3: Connecting the antenna For better TV reception and clear recordings, connect an outdoor antenna to your video TV. Connecting an outdoor antenna To connect a VHF antenna or a combination VHF/UHF antenna—75-ohm coaxial cable (round) Attach an IEC antenna connector to the 75-ohm coaxial cable. Plug the connector into the 8 (antenna) socket of the video TV.
  • Page 37 Step 4: Selecting the language (continued) Press M or m to select LANGUAGE/ , then press ENTER. PLAY PLAY The selected item turns ENTER ENTER red. Press M or m to select , then press ENTER. The menu language changes to Chinese. To return to the normal screen Press MENU.
  • Page 38 Step 5: Setting the clock (continued) Press M, m or , to set the month, year, hour and minutes in the same way as in step 5, then press ENTER. The clock starts working. To return to the normal screen Press MENU.
  • Page 39 Step 6: Setting the channels (continued) Press M or m to select AUTO PROGRAM, then press ENTER. PLAY PLAY ENTER ENTER Presetting starts from program position 1. The preset program and channel numbers are displayed on the screen in sequence. When presetting is finished, program position 1 appears again.
  • Page 40 Basic Operations Watching the TV EJECT This section explains various functions used while watching the TV. Most operations can be done using the remote PIC MODE TAPE SPEED TIMER REC G-CODE ON/OFF control. zREC INDEX > X PAUSE PLAY ENTER x STOP MENU COUNTER RESET...
  • Page 41 Playing a tape This section shows you how to play a tape. Other convenient functions you can use while playing a tape are explained in “Additional Operations.” EJECT PIC MODE TAPE SPEED TIMER REC G-CODE ON/OFF zREC INDEX > X PAUSE PLAY ENTER x STOP...
  • Page 42 Playing a tape (continued) Displaying on-screen information Press to display the following on-screen information. To show only the amount of remaining tape and the linear tape counter on the screen, press again. To make the information disappear, press displayed on the screen. Amount of remaining tape Beginning of the tape 27.11 SAT...
  • Page 43 Recording TV programs (continued) Press REC z. zREC The REC indicator lights up and recording begins. Note • You can also select the channel number directly with the number buttons. Press C (once for regular channels, twice for cable channels), the desired number buttons, then ENTER.
  • Page 44 Recording TV programs (continued) Recording using QUICK-TIMER The Quick-Timer recording function allows you to preset your video TV to record one program within a 24-hour period. For setting the Quick-Timer, use QUICK TIMER on the video TV. Before you begin •...
  • Page 45 Recording TV programs (continued) The QUICK TIMER button changes the following when turned clockwise or counterclockwise • When setting the start time: The hour increases or decreases by one hour. The minutes increase or decrease by one minute. • The recording time period: Increases or decreases by 15 minutes.
  • Page 46 Recording TV programs (continued) Recording TV programs using the G-CODE The G-CODE system allows you to simplify the task of program- ming your video TV to make recordings with the timer. Whenever you want to record a TV program, all you need to do is look up the program’s G-CODE number, a number assigned to each program published in the TV section of most newspapers and cable TV listings.
  • Page 47 Recording TV programs (continued) Recording TV programs using the G-CODE system Before you begin • When the TV is in standby mode (the 1 indicator on the video TV is lit in red), press ?/1 , PROGR +/– or a number button on the remote control.
  • Page 48 Recording TV programs (continued) Recording TV programs using the timer You can preset up to five programs within a one-month period using both the G-CODE setting and the timer setting. Before you begin • When the TV is in standby mode (the 1 indicator on the video TV is lit in red), press ?/1 , PROGR +/–...
  • Page 49 Recording TV programs (continued) PIC MODE TAPE SPEED TIMER REC G-CODE ON/OFF Checking/adding/ zREC INDEX changing/canceling > X PAUSE the timer or G-CODE PLAY settings ENTER x STOP MENU COUNTER RESET Press TIMER REC. To exit the PROGRAM TIMER REC LIST after checking the settings, skip steps 2 and 3.
  • Page 50 Adjusting the TV (continued) Presetting channels manually Preset the channels manually if you want to select channels that were not set automatically or if you want to allocate program numbers to channels one by one. Press MENU. Press M or m to select , then press ENTER.
  • Page 51 Adjusting the TV (continued) Skipping program positions You can skip unused program positions when selecting a program with the PROGR +/– buttons. However, the skipped programs may still be called up when you select them with the number buttons. Press MENU. Press M or m to select , then press ENTER.
  • Page 52 Adjusting the TV (continued) Adjusting the color system Normally set the color system to AUTO. However, when the picture has no color, manually select the appropriate color system for your area. Press MENU. Press M or m to select , then press ENTER. Make sure TV SET UP is selected, then press ENTER.
  • Page 53 Adjusting the TV (continued) Adjusting the alignment of the picture EJECT The picture may be out of alignment due to influence from the earth’s magnetic PIC MODE field in relation to the position of the TV. TAPE SPEED TIMER REC G-CODE ON/OFF You can adjust the angle of the picture if zREC INDEX...
  • Page 54 Tape options (continued) Adjusting with Adaptive Picture Control (APC) This function allows you to improve playback and recording quality automatically according to the condition of the video tape. This function is set to ON at the factory. To maintain better picture quality, it is advisable to leave the function on.
  • Page 55 Additional Operations When connecting to a Sony VCR If you use this video TV with another Sony VCR, the remote control may accidentally operate both the video TV and VCR at the same time. To prevent this from happening, set VHS to SONY so that the remote control operates only this video TV.
  • Page 56 Tape options (continued) Setting the color system Normally set COL SYS in the menu to AUTO. If streaks appear during playback, set COL SYS to correspond to the system that the tape was recorded in. Press MENU. Press M or m to select , then press ENTER.
  • Page 57 Switching off automatically EJECT —SLEEP PIC MODE TIMER REC G-CODE ON/OFF TAPE SPEED zREC INDEX You can automatically switch the video > X PAUSE TV into standby mode after a selected time period. PLAY ENTER x STOP MENU COUNTER RESET GAME Press With each press, the time...
  • Page 58 Switching on automatically - ON TIMER (continued) Press M or m to set the source to be switched on, then press ENTER. The SOURCE changes as follows. TV PROG t VCR N (video playback) If you select TV PROG, press M or m to change the channel numbers.
  • Page 59 Connecting optional equipment Watching and recording the picture input from optional equipment To connect a video camera to audio output t 2/GAME IN 9 t 2/GAME VMC-710M/720M (not supplied) To connect a VCR t 1/ t 1/9 Additional Operations To watch the video input signal to video output to video...
  • Page 60 Count the number of times the indicator flashes. GAME Press ?/1 to turn off your video TV. Inform your nearest Sony service facility about the number of times the indicator flashes. Be sure to note the model name and serial number located on the rear of your video TV.

  • Page 61: Troubleshooting

    (COL SYS) setting. (page 38) The antenna direction, Adjust the antenna direction, position and angle need position and angle. Contact a Sony adjustment. dealer for advice. Double images or “ghosts” Broadcast signals are Use a highly directional antenna.
  • Page 62 (a standard service fee will be charged). Do not use any commercially available liquid type cleaning cassettes other than Sony’s, as it may damage the video heads. The video heads may be The video heads may have to be worn out.
  • Page 63 Identifying parts and controls Refer to the pages indicated in parentheses ( ) for details. Front panel STOP –PLAY– 1 i (headphones) jack 4 Tape transport buttons STOP x button (17, 20) 2 t2/GAME IN jacks ( (video)/9 REW m/ (audio)) (52, 53) PLAY N button (17) 3 TUNER PRESET ON/OFF button...
  • Page 64 Identifying parts and controls (continued) Remote control EJECT EJECT PIC MODE PIC MODE TAPE SPEED TIMER REC G-CODE ON/OFF TAPE SPEED zREC INDEX zREC > X PAUSE PLAY ENTER x STOP MENU COUNTER RESET MENU GAME -/-- PROGR 1 % (muting) button (15) qs TIMER REC (recording) button (30) 2 EJECT Z button (17) qd TAPE SPEED button (19)

  • Page 65: Disassembly

    2-1. REAR COVER REMOVAL 2 Rear cover 2-3. SERVICE POSITION (A BOARD) CV board Insulator Note: Open the A board after move the claw SECTION 2 DISASSEMBLY 2-2. CHASSIS ASSY REMOVAL 1 Eight screws (+BVTP 4 X 16) Cassette door Note: Notice for Installing chassis assmbly Install chassis assembly when keep the cassette door open state.

  • Page 66: Harnes Location

    2-5. HARNESS LOCATION Demagnetic coil DGC holder VM coil CN001 CN1003 CN304 Anode cap Deflection yoke NA rotation coil MA10 board CV board CN002 CN303 CN302 CN301 CN305 Tuner CN306 CN605 board CN803 CN801 CN602 CN604 CN603 CN962 CN503 CN902 F board CN551 CN704...

  • Page 67: Picture Tube Removal

    2-6. PICTURE TUBE REMOVAL 9 Demagnetization 4 CV board 5 NA rotation coil 6 Deflection yoke !¡ Four screws (Tapping screw 5) 1 Anode cap 7 Top support Cushion • Removal of anode-cap NOTE : Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or car- bon paint on the CRT, after removing the anode.

  • Page 68: Set-Up Adjustments

    • The following adjustments should be made when a complete realignment is required or a new picture tube is installed. • These adjustments should be performed with the rated power supply voltage, unless otherwise noted. The PICTURE and Brightness controls should be set as follows unless otherwise noted: PICTURE control ...

  • Page 69: Convergence

    3-2. CONVERGENCE Purity BMC magnet Vertical static convergence magnet (1) Horizontal and Vertical Static Convergence 1. Receive DOT HATCH signal adjust [BRT], [PIX] to looks easily. 2. Set V. STAT Mg, BMC Mg to standard condition. 3. Correct V. STAT Mg. (Correct vertical lag of R, B-DOT around the center of CRT.) (Fig.3-5) 4.

  • Page 70: Focus Adjustment

    • Adjust TLH. (TLH CORRECTION PIECE : 4-057-714-01) Correct horizontal mis-convergence of X axis' right and left red and blue. When red is outside and view from DY neck side, insert TLH correction piece to rightside (TLH+) and when blue is outside and also view from DY neck side, insert TLH correction piece to left (TLH-).

  • Page 71: White Barance Adjustment

    3-5. WHITE BALANCE ADJUSTMENT 1. Receive color-bar signal and set menu picture quality to minimum picture and standard brightness. 2. Set to service mode and adjust CUT-OFF (VP25-green, VP26- blue) and DRIVE (22-green, VP23-blue) of center. 3. Switch to all white signal. 4.

  • Page 72: Safety Related Adjustment

    SAFETY RELATED ADJUSTMENT CONFIRMATION OF HOLD-DOWN When the parts with a mark on the circuit diagram shown below are replaced, confirm the matters described in items 1. and 2. shown below. : PM601, R614, C614, IC607, R638 1. CONFIRMATION OF +B LINE (A BOARD) 1) Input 110 V A C.

  • Page 73: Circuit Adjustments

    5-1. ADJUSTMENTS WITH COMMANDER 1. ENTERING SERVICE MODE 1) Turn on the main power of the set and enter into stand-by mode. 2) Press the following sequence of buttons on the Remote Control Commander. ON SCREEN DISPLAY CH “ 5 ” VOLUME (+) POWER “...

  • Page 74: Adjustment Method

    5-2. ADJUSTMENT METHOD Service adjustment to this model can be performed with the supplied Remote Control Commander RM-955, 956. • HOW TO ENTER INTO SERVICE MODE When exchange the MEMORY IC002 (MA10 board) Perform “standard value” writing YCJ adjustment Deflection circuit adjustment Micro computer adjustment...

  • Page 75: Service Data

    5-3. SERVICE DATA DISP DATA STANDARD RANGE DATA 00-03 VPOS 00-3F VSIZ 00-3F SCOR 00-0F VLIN 00-0F HPOS 00-3F HSIZ 00-3F AFBW 00-0F AFAG 00-0F TRAP 00-0F VP10 PAMP 00-3F VP11 UCPN 00-3F VP12 LCPN 00-3F VP13 HBLK 00-01 VP14 LBLK 00-0F VP15...
  • Page 76 DISP DATA STANDARD RANGE DATA 00-FF 00-01 00-3F 00-01 00-01 00-7F 00-7F 00-7F 00-7F 00-7F MS10 00-FF MS11 00-FF DISP DATA STANDARD RANGE DATA OSDH 00-3F 00-01 00-FF HDCG 00-03 00-01 00-01 00-01 00-01 00-01 ITEM NICAM SEARTH DELAY AGC SWITCH AGC GAIN CARRIER MUTING AUDIO CLOCK OUT...

  • Page 77: A Board Adjustment

    5-4. A BOARD ADJUSTMENT 1. H OSC ADJUSTMENT 1) Input select should be selected LINE input (no signal). 2) Connect a frequency counter to TP801 (A board). 3) Adjust service data "VP42" (HOSC) to become 15.690kHz 25Hz. 2. PICTURE QUALITY ADJUSTMENT 2-1.
  • Page 78 MEMO – 78 –...

  • Page 79: Diagrams

    TV BLOCK SECTION 6 DIAGRAMS 6-1. BLOCK DIAGRAMS TU101 IC301 Y/C/J ONLY BUFF BUFF TV IN Q101 Q305 V OUT V IN IC103 DC-DC CONV. R OUT M77 ONLY CN301 G OUT NICAM B OUT IC101 D103 IK IN PLL SW RESET Q RESET AFT 0(TV)
  • Page 80 6-2. CIRCUIT BOARDS LOCATION Reference information RESISTOR : RN METAL FILM : RC SOLID : FPRD NONFRAMMABLE CARBON : FUSE NONFRAMMABLE FUSIBLE FF10 : RW NONFRAMMABLE WIREWOUND : RS NONFRAMMABLE METAL OXIDE : RB NONFRAMMABLE CEMENT : Å ADJUSTMENT RESISTOR COIL : LF-8L MICRO INDUCTOR...
  • Page 81 AUDIO VIDEO J101 TU101 R106 :CHIP R107 JL37 JL38 R101 R125 CN604 C102 :CHIP L101 :CHIP C104 L102 10µH :TAB 10µH :LAV35 R102 :LAV35 R105 :CHIP :CHIP TO F BOARD CN903 AUDIO L103 L104 R127 D103 C110 10µH 10µH JL119 C108 :LAV35 :LAV35...
  • Page 82 TO A BOARD T801(FBT) D702 RED.OUT 1SS119 R738 149.0 D703 C709 100k 0.047 1SS119 J701 1/2W C719 C721 0.001 IC701 250V G1-1 ( RGB OUT, VM ) TDA6101Q/N3 VIDEO-AMP 150.3 R734 RV701 CN701 D714 1/2W 110M 1SS119 VB-RECT G1-2 :S-MICRO G1-3 10 9 R733...

  • Page 83: [ Video Section]

    Section Title [ VIDEO SECTION] 1. GENERAL 1-1. INTERNAL VIEWS ... 96 2. DISASSEMBLY 2-1. Top Cover Removal ... 97 2-2. VCR Block Assy Removal ... 97 2-3. FF10 Board Removal ... 97 2-4. MA10 Board Removal ... 97 2-5. Service Position (MA10 Board) ...

  • Page 84: General

    1-1. INTERNAL VIEWS - Top Side - FE head 1-500-144-11 Reel table (S) 3-977-507-01 M902 - Bottom Side - Capstan motor 1-698-971-11 SECTION 1 GENERAL Drum assembly DZH-89A-R 1-759-453-11 ACE block assembly A-6759-620-A FL complete assembly A-6759-619-B Reel table (T) 3-977-508-01 M903 Cam motor assembly (Loading motor)

  • Page 85: Disassembly

    2-1. TOP COVER REMOVAL 1 Four screws (+BVTP 3 X 12) 2 Top cover 2-3. FF10 BOARD REMOVAL 1 Screw (+BVTP 3 X 12) 3 H holder 2 Four craws 4 FF10 board 2-5. SERVICE POSITION (MA10 BOARD) MA10 board Chassis assmbry SECTION 2 DISASSEMBLY...

  • Page 86: Circuit Adjustments

    Necessary items and indications for total adjustment of electric circuit of this unit will be described in this chapter. [ INSTRUMENTS TO BE USED ] 1) Color TV 2) Signal or dual trace type oscilloscope, band more than 30 MHz, delay, as provided.
  • Page 87 X’tal OSC CHECK Mode Signal Alignment tape, Stair step Measurement Point MA10 board Q823 emitter(NTSC) IC802 %ªpin(PAL) Measurement Equipment Oscilloscope Specified Value 500 200mVp-p Check: 1)Confirm the frequency is 3.579545MHz 82Hz(NTSC), and 4.433619MHz 100Hz(PAL). 2)Confirm the waveform amplitude is 500 200mVp-p. 3.579545MHz 82Hz (NTSC) 4.433619MHz...
  • Page 88 REC Y LEVEL CHECK Mode E-E(SP) Signal No signal MA10 board IC802 !•pin Measurement Point Measurement Equipment Oscilloscope Specified Value 240 70mVp-p(NTSC) 260 70mVp-p(PAL) Check: Confirm the Vp-p of the waveform is 220 70mVp-p. Fig.3-7 REC CHROMA CHECK Mode REC(SP) Signal Color bar MA10 board IC802 !¢pin...

  • Page 89: Com Poart Function Description (Ma10 Board Ic001)

    INTERFACE, IC PIN FUNCTION DESCRIPTION 4-1. -COM PORT FUNCTION DESCRIPTION (MA10 BOARD IC001) Pin No. Signal S SEL F S SEL R DGC SW – ST/ MONO – – MAIN /SUB F MONO VM SW GP A GP B GP C ASURA CS SLAVE RESE J CLK...

  • Page 90: System Control-Video Block Interface (Ma10 Board Ic402)

    4-2. SYSTEM CONTROL-VIDEO BLOCK INTERFACE (MA10 BOARD IC402) Signal Pin No. STOP IC402 1 RF SW P (SW30) IC402 4 Q VD IC402 ^§ V SYNC *1. 30Hz 50% duty pulse synchronizing with drum rotation. *2. Normally “L” . “H” when the video signal is not detected. *3.

  • Page 91: System Control-Mechanism Block Interface (Ma10 Board Ic402)

    4-4. SYSTEM CONTROL-MECHANISM BLOCK INTERFACE (MA10 BOARD IC402) CASSETTE CASSETTE Signal Pin No. I/O EJECTED LOADING UNLOADING THREADING UNTHREADING STOP CAM UN LOAD IC402 9 HI-Z IC402 8 CAM LOAD IC402 @™ MODE 1 IC402 @¡ MODE 2 IC402 @º MODE 3 IC402 !ª...

  • Page 92: Servo/System Control Port Function Description (Ma10 Board Ic402)

    4-7. SERVO/SYSTEM CONTROL PORT FUNCTION DESCRIPTION (MA10 BOARD IC402) Pin No. Signal RF SWP RF SWITCHING PULSE – – – – QUASI VD CTLHYS HIGH CTL CONTROL – – REC CTL REC CTL SIGNAL CAM LOAD CAM LOADING CAM UNLOAD CAM UNLOADING CTL RESET CTL CONTROL...

  • Page 93: Diagrams

    SYSTEM CONTROL,MAIN MICON, MA10 VCR SERVO,AUDIO OUT,Y/C PROCESS, SECTION 5 CN702 AUDIO PROCESS,VIDEO•AFM REC/PB AMP RF SWP CHECK CONNECTOR PB RF DIAGRAMS REC CUR IC701 VIDEO REC/PB AMP CN701 REC CUR HIFI CH2 F 5-1. BLOCK DIAGRAMS HIFI CH2 HIFI CH2 S SP CH1 F PB VIDEO PB RF 22...

  • Page 94: Printed Wiring Boards And Schematic Diagrams

    MA10 (1/3) MA10 (2/3) 5-3. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS MA10 (3/3) Note: All capacitors are in F unless otherwise noted. pF: Capacitors without voltage indication are all 50V. All resistors are in ohms. = 1000 , M = 1000k Indication of resistance, which does not have one for rating electrical power, is as follows.
  • Page 95 TO DRUM MOTOR FOR JIG CN401 CN1004 SW5V R411 4.7k Q402 :CHIP L401 UN2113 JW(5) C425 IC404 BA10393F IC405 F:CHIP CTL AMP (1.8) BA6305F <2.1> CTL AMP C409 D405 11ES2 6.3V C410 0.047 F:CHIP R414 100k R418 (1.7) 1.4 R435 C422 :CHIP 100k...
  • Page 96 MA10(2/3) BOARD WAVEFORMS PAL/SECAM NTSC 0.4Vp-p (H) 0.4Vp-p (H) 0.32Vp-p (H) FULL ERASE HEAD 0.32Vp-p (H) 0.24p-p (H) 0.25Vp-p (H) HEAD AUDIO REC/PB REC/PB ERASE HEAD AUDIO REC/PB HEAD PAL/SECAM NTSC 0.5Vp-p (H) 1.2Vp-p(H) 0.5Vp-p (H) REC/PB SECAM NTSC 3.8Vp-p (H) 1.2Vp-p (H) 1.8Vp-p (V) REC/PB...
  • Page 97 MA10 (3/3) (VIDEO REC/PB AMP) C711 (1.8) CN701 0.022 <2.2> F:CHIP HIFI CH2 HIFI CH2 F VIDEO RF (3.8) HIFI CH2 S (PB) <0> SP CH1 F SP CH1 C712 (0.1) SP CH1 S 0.022 <0.6> F:CHIP HIFI CH1 F VIDEO RF VIDEO RF HIFI CH1 S...
  • Page 98 FF10 [ LED, EJECT SW ] – FF10 BOARD – FF10 (LED,EJECT SW) CN1301 :B TO B D 5V D1304 SLR-325VCT31 LED 6 REC PON D1303 LED 5 SLR-325VCT31 ON.TIMER LED 4 D1305 LED 3 SLR-325VCT31 LED 2 D1306 SLR-325VCT31 LED 1 T.REC D1307...
  • Page 99 TRANSISTOR RPT-37PBT32 2SC5388 RPT-37PB3F 2SK1482-T UN2113 UN2211 UN2213 2SA1162-G 2SB709A-QRS-TX 2SC1623-L5L6 2SC2412K-T-146-QR 2SD601A-Q 2SD601A-QRS-TX 2SK2251-01 2SA1175-HFE 2SA1309A-QRSTA 2SC2785-HFE 2SC3311A-QRSTA 2SK2845-LB102 LETTER SIDE 2SA1837 2SC4793 2SC1815-GR 2SD879 DIODE D1NL20U CATHODE ANODE D1NS4 D1N20R MTZJ-T-77-3.9B MTZJ-3.3 MTZJ-5.1C MTZJ-6.2B RD10ESB2 RD18ES-B2 RD3.9ES-B1 RD3.9ES-B2 RD39ES-B2 RD5.1ES-B1 RD5.6ESB2...

  • Page 100: Exploded Views

    NOTE: • Items with no part number and no description are not stocked because they are seldom required for routine service. 6-1. PICTURE TUBE : 7-685-134-19 +PTP 2.6X8 : 7-685-663-71 +BVTP 4X16 : 7-685-648-79 +BVTP 3X12 REF. NO. PART NO. DESCRIPTION ------------ ------------- -------------------...
  • Page 101 6-2. CHASSIS : 7-685-648-79 +BVTP 3X12 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- * A-1241-368-A FF10 MOUNT 4-066-498-11 BUTTON, RECORDING 4-394-972-01 CAP, POWER * A-1306-569-A MA10 COMPL 1-900-234-88 CONNECTOR ASSY 7P * A-1298-844-A A COMPL 8-598-449-01 TUNER, FSS BTF-LG443 (VF21M40/M70) 8-598-451-10 TUNER, FSS BTF-WG441 (VF21M77) ! 1-453-296-11 FBT ASSY (NX-4001/M3B4) 1-900-226-67 LEAD ASSY, G2...

  • Page 102: Mechanism Deck Assembly (1)

    6-3. MECHANISM DECK ASSEMBLY (1) : 7-685-646-79 +BVTP 3X8 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- 3-977-509-01 WASHER, THRUST 3-977-507-01 TABLE, REEL (S) 3-977-508-01 TABLE, REEL (T) 1-500-471-11 HEAD, FE 3-977-495-01 SHAFT TG2 3-977-494-01 HOLDER, FEH A-6759-619-B FL COMPLETE ASSY 3-977-535-01 PLATE, LUMINOUS(END SENSOR) 3-977-536-01 PLATE, LUMINOUS(TOP SENSOR) 3-970-471-01 SPRING (DECK OPEN), TORSION...

  • Page 103: Mechanism Deck Assembly (2)

    6-4. MECHANISM DECK ASSEMBLY (2) : 7-685-646-79 +BVTP 3X8 : 7-682-547-04 +P 3X6 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- X-3947-581-4 BRAKE ASSY,MAIN(T) 3-977-462-01 SPRING,EXTENTION. (MAIN BRAKE) X-3947-573-1 ARM ASSY, PENDULUM X-3947-580-5 BRAKE ASSY, MAIN(S) 3-977-513-02 LEVER, REC. PROOF 3-976-767-01 SPRING, TENS.

  • Page 104: Mechanism Deck Assembly (3)

    6-5. MECHANISM DECK ASSEMBLY (3) : 7-685-646-79 +BVTP 3X8 : 7-685-133-19 +BVTP 2.6 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- 3-977-437-01 RETAINER,CAM MOTOR X-3947-584-1 ASSY, REEL DIRECT 3-977-443-01 WASHER, STOPPER 3-977-438-01 WORM - WHEEL 3-977-506-01 ARM, LIMITTER SELECTION 3-977-444-01 GEAR, PINCH TRANSMISSION 3-977-515-01 GUIDE, FL SLIDER 3-977-517-01 PLATE, SLIDE, FL 3-977-519-01 SPRING, TENS.

  • Page 105: Electrical Parts List

    The components identified by shading and mark are criti- cal for safety. Replace only with part number specified. NOTE: • The components identified by REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- carefully factory-selected for each set in order to satisfy The components identified by regulations regarding X-ray radiation.
  • Page 106 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- C612 1-126-943-11 ELECT 2200MF C614 ! 1-126-964-11 ELECT 10MF C615 1-126-960-11 ELECT C616 1-107-680-91 ELECT 22MF C617 1-104-664-11 ELECT 47MF C618 1-163-007-11 CERAMIC CHIP 680PF C619 1-162-318-11 CERAMIC 0.001MF 10% C620 1-126-941-11 ELECT 470MF C621 1-104-664-11 ELECT...
  • Page 107 The components identified by shading and mark are criti- • The components identified by cal for safety. carefully factory-selected for each set in order to satisfy Replace only with part number regulations regarding X-ray radiation. Should replacement be specified. required, replace only with the value originally used. REF.
  • Page 108 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- R312 1-216-675-11 METAL CHIP R313 1-216-025-91 RES,CHIP R314 1-216-025-91 RES,CHIP R315 1-216-025-91 RES,CHIP R316 1-216-025-91 RES,CHIP R317 1-216-025-91 RES,CHIP R318 1-216-025-91 RES,CHIP R319 1-216-025-91 RES,CHIP R320 1-216-049-91 RES,CHIP R321 1-216-025-91 RES,CHIP R322 1-216-051-00 RES,CHIP 1.2K R323...
  • Page 109 The components identified by shading and mark are criti- cal for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- R807 1-260-316-51 CARBON R808 1-214-907-00 METAL R809 1-216-085-00 RES,CHIP R811 1-216-057-00 RES,CHIP 2.2K R812 1-216-687-11 METAL CHIP R814 1-218-756-11 METAL CHIP...
  • Page 110 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- D964 8-719-911-19 DIODE 1SS119-25 D967 8-719-110-88 DIODE RD39ESB2 D968 8-719-110-88 DIODE RD39ESB2 <IC> IC502 8-759-603-37 IC M5216P IC701 8-759-346-42 IC TDA6101Q/N3 IC702 8-759-346-42 IC TDA6101Q/N3 IC703 8-759-346-42 IC TDA6101Q/N3 <JACK> ! 1-451-470-21 SOCKET, PICTURE TUBE J701 <COIL>...
  • Page 111 The components identified by shading and mark are criti- cal for safety. Replace only with part number VIDEO BLOCK specified. REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- * A-1241-368-A FF10 MOUNT ************* <CONNECTOR> CN1301 1-784-041-41 CONNECTOR, BOARD TO BOARD 9P <DIODE>...
  • Page 112 MA10 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- C845 1-164-346-11 CERAMIC CHIP 1MF C846 1-163-021-91 CERAMIC CHIP 0.01MF C847 1-163-038-91 CERAMIC CHIP 0.1MF C848 1-163-031-11 CERAMIC CHIP 0.01MF C849 1-126-960-11 ELECT C850 1-163-031-11 CERAMIC CHIP 0.01MF C851 1-163-809-11 CERAMIC CHIP 0.047MF 10% C852 1-124-589-11 ELECT 47MF...
  • Page 113 The components identified by shading and mark are criti- cal for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- JR108 1-216-295-91 SHORT JR109 1-216-295-91 SHORT JR111 1-216-295-91 SHORT JR115 1-216-295-91 SHORT JR116 1-216-295-91 SHORT JR119 1-216-295-91 SHORT JR120...
  • Page 114 MA10 REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- R078 1-216-073-00 RES,CHIP R084 1-216-033-00 RES,CHIP R085 1-216-049-91 RES,CHIP R096 1-216-069-00 RES,CHIP 6.8K R097 1-216-073-00 RES,CHIP R098 1-216-049-91 RES,CHIP R099 1-216-049-91 RES,CHIP R101 1-216-073-00 RES,CHIP R204 1-249-429-11 CARBON R205 1-216-049-91 RES,CHIP R206 1-216-109-00 RES,CHIP 330K...
  • Page 115 The components identified by shading and mark are criti- cal for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION ------------ ------------- ------------------- R857 1-216-049-91 RES,CHIP R858 1-216-049-91 RES,CHIP R860 1-216-061-00 RES,CHIP 3.3K R861 1-216-089-91 RES,CHIP R863 1-216-045-00 RES,CHIP R864 1-216-295-91 SHORT...
  • Page 116 ------------- ------------ ------------- (E/ME/JE model) (HK model) (VF21M70/M77) (E/ME/JE model) (VF21M77) (VF21M40/M70) Sony Ichinomiya Corporation Quality Assurance Division – 140 – The components identified by shading and mark are criti- cal for safety. Replace only with part number specified. DESCRIPTION...

This manual is also suitable for:

Trinitron kv-vf21m70Trinitron kv-vf21m77Rm-956Rm-955

Table of Contents