SERVICE MANUAL

COMMANDER DEST CHASSIS NO.

FE-2 CHASSIS

KV-21LT1B KV-21LT1E KV-21LT1K KV-21LT1U

RM-887

French

SCC-Q54C-A

KV-21FT2K

SCC-Q51E-A

Spanish SCC-Q53C-A

SCC-Q51C-A

SCC-Q52C-A

KV-21LT1

RM-889

KV-21FT2

TABLE OF CONTENTS
Section Title Specifications Connectors Self Diagnostic Software 1. GENERAL Switching On the TV and Automatically Tuning.. Introducing the Menu System.. Teletext.. Connecting Optional Equipment.. Using Optional Equipment.. Troubleshooting.. 2. DISASSEMBLY KV-21LT1 2-1. 2-2. 2-3. 2-4. 2-5. 2-6. Rear Cover Removal A Board PWB Removal 1 A Board PWB Removal 2 Service Position Wire Dressing Picture Tube Removal.... 10 11... Page 6 Section Title Page
3. SET-UP ADJUSTMENTS 3-1. Beam Landing 3-2. Convergence 3-3. Focus Adjustment 3-4. Screen (G2), White Balance 4. CIRCUIT ADJUSTMENTS 4-1. Electrical Adjustments 4-2. Test Mode 2 5. DIAGRAMS 5-1. Circuit Board Location 5-2. Block Diagrams 5-3. Schematic Diagrams and Printed Wiring Boards * C Board * A Board 5-4. Semiconductors 5-5. IC Blocks 6. EXPLODED VIEWS 6-1. Chassis (KV-21LT1) Chassis (KV-21FT2) 6-2. Picture Tube(KV-21LT1) Picture Tube(KV-21FT2) 7. ELECTRICAL PARTS LIST
KV-21FT2 2-7. 2-8. 2-9. 2-10. 2-11. Rear Cover Removal Chassis Removal Service Position Wire Dressing Picture Tube Removal... 15
ATTENTION APRES AVOIR DECONNECTE LE CAP DELANODE, COURT-CIRCUITER LANODE DU TUBE CATHODIQUE ET CELUI DE LANODE DU CAP AU CHASSIS METALLIQUE DE LAPPAREIL, OU AU COUCHE DE CARBONE PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE CATHODIQUE.
CAUTION SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR THE CARBON PAINTED ON THE CRT, AFTER REMOVAL OF THE ANODE CAP.
ATTENTION !! AFIN DEVITER TOUT RISQUE DELECTROCUTION PROVENANT DUN CHSSIS SOUS TENTION, UN TRANSFORMATEUR DISOLEMENT DOIT ETRE UTILIS LORS DE TOUT DPANNAGE LE CHSSIS DE CE RCEPTEUR EST DIRECTMENT RACCORD LALIMENTATION SECTEUR.
WARNING !! AN ISOLATION TRANSFORMER SHOULD BE USED DURING ANY SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO LIVE CHASSIS, THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO THE POWER LINE.
ATTENTION AUX COMPOSANTS RELATIFS LA SECURIT!! SAFETY-RELATED COMPONENT WARNING !! COMPONENTS IDENTIFIED BY SHADING AND MARKED 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 SUPPLEMENTS PUBLISHED BY SONY. LES COMPOSANTS IDENTIFIS PAR UNE TRAME ET PAR UNE MARQUE SUR LES SCHMAS DE PRINCIPE, LES VUES EXPLOSES ET LES LISTES DE PIECES SONT DUNE IMPORTANCE CRITIQUE POUR LA SCURIT DU FONCTIONNEMENT, NE LES REMPLACER QUE PAR DES COMPSANTS SONY DONT LE NUMRO DE PICE EST INDIQU DANS LE PRSENT MANUEL OU DANS DES SUPPLMENTS PUBLIS PAR SONY.

ITEM MODEL

Television System

B/G/H, L,I

Spanish

B/G/H, D/K

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 I : UHF B21-B69
Color System PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)
PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN) PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN) PAL, SECAM NTSC4.43, NTSC3.58 (VIDEO IN)

Model Power Consumption

KV-21FT2K 55W

KV-21LT1B 55W

KV-21LT1E 55W

Rear Connection Panel KV-21LT1 KV-21FT2
Front Connection Panel KV-21LT1 KV-21FT2
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. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted) See table 1., non fatal errors are reported using this method. Each time the software detects an error it is stored within the NVM. See Table 2.

Table 1

Error Message No error Reserved OCP ( Over Current Protection ) Reserved No Ver tical Sync Unstable AKB IIC bus clock and/or data lines low at power on NVM no IIC bus acknowledge at power on Not Used Tuner no acknowledge at power on Not used Jungle controller no acknowledge at Power ON LED Code 10 11
How to enter into Table 2 1. 2. Turn on the main power switch of the TV set and enter into the Stanby Mode. Press the following sequence of buttons on the Remote Commander.

(ON SCREEN DISPLAY)

(DIGIT 5)

(VOLUME -) (TV)

The following table will be displayed indicating the error count.
Flash Timing Example : e.g. error number 3 Table 2

StBy LED ON ON ON

ERROR MENU E02 E03 E04 E05 E06 E07 E08 E09 E10 E11 WORKING TIME HOURS MINUTES OCP OVP N/A VSYNC IKR IIC NVM JUNGLE TUNER SOUNDP 8V (0, (0, (0, (0, (0, (0, (0, (0, (0, (0, 255) 255) 255) 255) 255) 255) 255) 255) 255) 255) 0 0
Note: To clear the error count data press 80 on the Remote commander.
The operating instructions mentioned here are partial abstracts from the Operating Instruction Manual. The page numbers of the Operating Instruction Manual remain as in the manual.
Switching On the TV and Automatically Tuning
Please confirm that aerial is connected Confirm
5 A new menu appears on the screen asking you to check
that the aerial is connected. Ensure the aerial is connected and then press the OK button to start the automatic tuning. The TV starts to automatically search and store all available channels (TV Broadcast) for you.
Auto Tuning Programme: System: Channel: Searching. 01 B/G C21
The first time you switch on your TV, a sequence of menu screen appear on the TV enabling you to: 1) choose the language of the menu screen, 2) choose the country in which you wish to operate the TV, 3) search and store all available channels (TV Broadcast) and 4) change the order in which the channels (TV Broadcast) appear on the screen. However, if you need to change the language menu, change or repeat the tuning (e.g. when you move house) or rearrange again the order of the channels afterwards, you can do that by selecting the appropriate menu in the (Set Up). For more information, refer to the Menu Guide section of this instruction manual. You can also do that by pressing the on the TV set. Auto Start Up Button This procedure could take some minutes. Please be patient and do not press any button. Otherwise the automatic tuning will not be completed.

Set Up Language/Country Auto Tuning Programme Sorting Manual Programme Preset Advanced Features
LANGUAGE / COUNTRY The Language/Country option in the Set Up menu allows you to select the language that the menus are displayed in. It also allows you to select the country in which you wish to operate the TV set.
Brightness, Colour and Sharpness can only be alterated if Personal mode is selected. Hue is only available for NTSC colour signal (e.g: USA video tapes). Select Reset and press OK to reset the picture to the factory preset levels.
To do that: after selecting the option, press and then proceed in the same way as in the steps 2 and 3 of the section Switching On the TV and Automatically Tuning.

Menu System

AUTO TUNING The Auto Tuning option in the Set Up menu allows you to automatically search for and store all available TV channels.
Language/Country Auto Tuning Programme Sorting Manual Programme Preset Advanced Features

Set Up

To do that: after selecting the option, press and then proceed in the same way as in TV steps 4 and 5 of the section Switching On the TV and Automatically Tuning.
3 After selecting the Channel option, press. Then press or to select the channel tuning (C for terrestrial channels or S for cable channels). Next press. After that, press the number buttons to enter directly the channel number of the TV Broadcast or the channel of the VCR signal. If you do not know the channel number, press or to search for it. When you tune the desired channel, press OK twice to store. Repeat all the above steps to tune and store more channels.

Manual Programme Preset

b)Normally the automatic fine tuning (AFT) is
PROGRAMME SORTING The Programme Sorting option in the Set Up menu allows you to change the order in which the channels (TV Broadcast) appear on the screen. To do that: after selecting the option, press and then proceed in the same way as in step 6 b) of the section Switching On the TV and Automatically Tuning.
Programme: System: Channel: Label: AFT: Skip: Decoder: Confirm 01 B/G C 21 --TVE On No Off

Removal of the Anode-Cap

* REMOVING PROCEDURES.

Anode button

Turn up one side of the rubber cap in the direction indicated by the arrow a
How to handle the Anode-Cap

1. 2. 3. 4.

Using a thumb pull up the rubber cap 3 When one side of the rubber cap is firmly in the direction indicated by the separated from the anode button, the arrow b anode-cap can be removed by turning up the rubber cap and pulling it up in the direction of the arrow c
To prevent damaging the surface of the anode-cap do not use sharp materials. Do not apply too great a pressure on the rubber, as this may cause damage to the anode connector. A metal fitting called a shatter hook terminal is fitted inside the rubber cap. Do not turn the rubber foot over excessively, this may cause damage if the shatter hook sticks out.

2-7. Rear Cover Removal

2-8. Chassis Removal and Refitting

=> => =>

2-9. Service Position
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

Position the A board as shown to gain access to its solder side. Take care not to trap the interconnecting leads in the process.

=> =>

2-11. Picture Tube Removal
Discharge the anode of the CRT and remove the anode cap. Unplug all interconnecting leads from the Deflection yoke, neck assy, degaussing coils and CRT grounding strap. Remove the C Board from the CRT. Remove the chassis assembly. Loosen the Deflection yoke fixing screw and remove. Place the set with the CRT face down on a cushion and remove the Degaussing Coil holders. Remove the Degaussing Coils. Remove the CRT grounding strap and spring tentioners. Unscrew the four CRT fixing screws [ located on each CRT corner ] and remove the CRT. [Take care not to handle the CRT by the neck.]
SECTION 3 SET-UP ADJUSTMENTS
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. Unless there are specific instructions to the contrary, set the controls and switches to the following settings : Contrast Brightness.. 80% [or remote control normal] 50%

Carry out the adjustments in the following order : 3-1. Beam Landing. 3-2. Convergence. 3-3. Focus. 3-4. White Balance. Note : Test equipment required. 1. Color bar/pattern generator. 2. Degausser. 3. Oscilloscope. 4. Digital multimeter.
Preparation: In order to reduce the influence of geomagnetism on the sets picture tube, face it in an easterly or westerly direction. Switch on the sets power and degauss with the degausser.

Fig. 3-2.

Purity

3-1. Beam Landing

1. 2. 3. Input an all white signal from the pattern generator. Set the Contrast and Brightness to normal. Set the pattern generator raster signal to Red. Move the deflection yoke forward and adjust with the purity control so that the Red is at the centre and the Blue and Green take up equally sized areas on each side of the screen. [See Fig.3-1 - 3-3]. Move the deflection yoke backwards and adjust so that the entire screen becomes Red. [See Fig.3-1] Switch the raster signal to Blue, then to Green and verify the condition. When the position of the deflection yoke has been determined, fasten the deflection yoke with the screws. If the beam does not land correctly in all the corners, use a magnet to correct it. [See Fig.3-4]

Fig. 3-3.

GREEN RED BLUE

4. 5. 6. 7.

Purity control corrects this area
Disk magnets or rotatable disk magnets correct these areas (a-d)
Deflection yoke positioning corrects these areas

Fig. 3-1.

Caution : High voltages are present on the Deflection yoke terminals - take care when handling the Deflection yoke whilst carrying out adjustments.

Disk Magnets

Fig.3-4

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.
Before starting this adjustment, adjust the focus, horizontal size and vertical size. Minimize the Brightness setting. Input a dot pattern from the pattern generator.

b a a b

Horizontal and Vertical Static Convergence

Center dot

H.STAT convergence control
V.STAT Vertical Static Magnet
RV5375 (H STAT) H STAT Convergence (on mount side)

B G B R

Fig.3-5
[Moving horizontally], adjust the H.STAT control so that the Red, Green and Blue points are on top of each other at the centre of the screen. [Moving vertically], adjust the V.STAT magnet so that the Red, Green and Blue points are on top of each other at the centre of the screen. If the H.STAT variable resistor is unable to bring the Red, Green and Blue points together at the centre of the screen, adjust the horizontal convergence with the H.STAT variable resistor and the V.STAT magnet in the manner indicated below. [In this case, the H.STAT variable resistor and the V.STAT magnet influence each other].
Operation of the BMC (Hexapole) magnet.

R G B R G B R G B

Tilt the V.STAT magnet and adjust the static convergence by opening or closing the V.STAT magnet. The movement of the magnets interact with each other and so the respective dot position should be monitored while carrying out this adjustment. Use the H.STAT VR to adjust the Red, Green and Blue dots so that they coincide at the centre of the screen (by moving the dots in the horizontal direction).
Geometry Adjustment. Preparation:

YCH Adjustment

YCH VR
Before starting this adjustment, adjust the horizontal and vertical static convergence. 1. 2. 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.

Deflection Yoke

TLV Adjustment

TLV VR

Screen Corner Convergence If you are unable to adjust the corner convergence properly, this can be corrected with the use of permalloy magnets.
a-d: screen-corner convergence defect c d

Tilt Direction HTIL Adjustment
Install the permalloy assembly for the area that needs correcting.

TLH pieces

HTIL correction can be performed by adding a TLH correction assembly to the Deflection yoke.
Permalloy Assy X-4387-214-1
Convergence adjustment with permalloy

Layout of each control

3-4. Screen (G2), White Balance
[Adjustment in the service mode using the remote commander] G2 adjustment 1. 2. 3. 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. White balance adjustment for TV mode 1. 2. Input an all-white signal from the pattern generator. Enter into the Service Mode by pressing TEST, TEST and MENU on the Service Commander. 3. Select Service from the on screen menu display and press the right arrow button on the remote commander. 4. The Service menu will appear on the screen. [See Page 18] 5. Set the Contrast to MAX. 6. Set the R-Drive to 25. 7. Adjust the G-Drive and the B-Drive so that the white balance becomes optimum. 8. Press the OK button to write the data for each item. 9. Set the Contrast to MIN. 10. Adjust the G-Cutoff, and the R-Cutoff with the left and right buttons on the remote commander so that the white balance becomes optimum. 11. Press the OK button to write the data for each item.

V.STAT

Purity BMC (Hexapole)

3-3. Focus Adjustment

1. 2. 3. Receive a television broadcast signal. Normalize the picture setting. Adjust the focus control located on the flyback transformer to obtain the best focus at the centre of the screen. Bring only the centre area of the screen into focus, the magenta-ring appears on the screen. In this case, adjust the focus to optimize the screen uniformly.

Screen

SECTION 4 CIRCUIT ADJUSTMENTS
4-1. Electrical Adjustments
Service adjustments to this model can be performed using the supplied Remote Commander RM-887. 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.

SERVICE 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 (0, 15) (0, 15) (0, 63) (0, 63) (0, 63) (0, 3) (0, 15) (0, 3) (0, 15) (0, 15) (0, 63) (0, 63) (0, 63) (0, 15) (0, 15) Adj Adj 25 Adj Adj Adj Adj Adj 8

(VOLUME +) (TV)

TT will appear in the upper right corner of the screen. Other status information will also be displayed. 3. Press MENU on the remote commander to obtain the following menu on the screen.
GEOMETRY Left-HBlk Right-HBlk V-Angle V-Bow H-Centre H-Size Pin-Amp U-Corner-Pin L-Corner-Pin Pin Phase V-Linearity V-Size S-Correction V-Centre V-Zoom (0, (0, (0, (0, (0, (0, (0, (0, (0, (0, (0, (0, (0, (0, (0, 15) 15) 63) 63) 63) 63) 63) 63) 63) 63) 63) 63) 63) 63) 63) Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj 25
Geometry Service Design Status IF adjust Error Menu FE-2 Mono v1.12 Factory data 00h

4. 5. 6.

Move to the corresponding adjustment item using the up or down arrow buttons on the Remote Commander. Press the right arrow button to enter into the required menu item. Press the Menu button on the Remote Commander to quit the Service Mode when all adjustments have been completed.
Note : Before performing any adjustments ensure that the correct model has been selected in the Model Setting menu. After carrying out the service adjustments, to prevent the customer accessing the Service Menu switch the TV set OFF and then ON.
IF ADJUST AGC Adjust Automute Audio Gain L Gating (0, 255) (0, 255) (0, 255) (0, 255) 0 1
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.
Sub Colour Adjustment [ Print side of A board ] 1. 2. 3. 4. Receive a PAL colour bar signal. Connect an oscilloscope to Pin 3 of CN504 [A Board]. Enter into the Service service menu. Adjust the Sub Colour data so that the Cyan, Magenta and Blue colour bars are of equal levels as indicated below. Note: Ensure that no signal is applied to the Antenna socket while carrying out the following IF adjustments. 1. 2.
Deflection System Adjustment Enter into the Geometry service menu. Select and adjust each item in order to obtain the optimum image.

Same Level

B-Out Waveform
Tuner AGC Adjustment 1. Set the AGC adjust register value : For destination France set the value to 6. All other destinations set the value to 0. 2. 3. 4. 5. 6. 7. Receive a signal of 64dBuV / 75 ohm terminated [62dBuV / 75 ohms for B model] via the tuner antenna socket. Connect a voltmeter to pin1 of TU101 [print side of A Board] or to the AGC pin of CN001 [mount side of A Board]. Confirm that the AGC voltage is 3.5volts +/- 0.3volts. If adjustment is required, enter into the Test Menu. Select the AGC Adjust menu item. Adjust the data using the left and right arrow buttons on the Remote Commander to obtain a voltage of 3.5V +/- 0.3V.

V SIZE

4-2. TEST MODE 2:
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. The function is kept even when the menu is not displayed on screen !!.

S CORRECTION

V CENTRE

H CENTRE

H SIZE

PIN AMP

PIN PHASE

CORNER PIN

V ANGLE
'TT' mode off Picture maximum Picture minimum Set speaker/headphone Volume to 35% Set speaker/headphone Volume to 50% Set speaker/headphone Volume to 65% Set speaker/headphone Volume to 80% Ageing mode Shipping Condition Sub picture adjustment Sub colour adjustment Sub Brightness adjustment Text H Position adjustment Picture Rotation Test Picture level 50% Toggle Factory Mode Destination ADE Destination BL Destination ADE Destination U Destination ADE Destination BL Destination KR Destination KR Auto Sutoff Disable/Enable Rotation ON/OFF No Function No Function Enter G2 Adjustment Re-initialise NVM (Prog 59) Re-initialise geometry (Prog 59) Set NVM as non virgin (Prog 59) Set NVM as virgin (Prog 59) Auto AGC adjustment No Function Enable/disable RGB priority RGB auto-detect enable/disable On timer enable/disable Manual AGC adjustment Enable/disable X26 countermeasure (N problem) Force PAL video (Factory Use Only) Un-force PAL(restore normal video condition) Local keys test No Function Enable/disable watchdog Display Error and Working Time menu
5-2. CIRCUIT BOARD LOCATION

Reference Information

RESISTOR RN RC : METAL FILM : SOLID : NON FLAMMABLE CARBON : NON FLAMMABLE FUSIBLE : NON FLAMMABLE METAL OXIDE : NON FLAMMABLE CEMENT : NON FLAMMABLE WIREWOUND : ADJUSTMENT RESISTOR COIL CAPACITOR LF-8L TA PS PP PT MPS MPP : MICRO INDUCTOR : TANTALUM : STYROL : POLYPROPYLENE : MYLAR : METALIZED POLYESTER : METALIZED POLYPROPYLENE : BIPOLAR : HIGH TEMPERATURE : HIGH RIPPLE

FPRD FUSE

N VM H

CVM Board

RS RB RW

J S1 Board A2 A1

A Board

D2 A D

5-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS

Note :

All capacitors are in F unless otherwise noted. pF : F 50WV or less are not indicated except for electrolytic types. Indication of resistance, which does not have one for rating electrical power, is as follows. Pitch : 5mm Electrical power rating : 1/4W Chip resistors are 1/10W All resistors are in ohms. k = 1000 ohms, M = 1000,000 ohms : nonflammable resistor. : fusible resistor. : internal component. : panel designation or adjustment for repair. All variable and adjustable resistors have characteristic curve B, unless otherwise noted. All voltages are in Volts. Readings are taken with a 10Mohm digital mutimeter. Readings are taken with a color bar input signal. Voltage variations may be noted due to normal production tolerences. : B + bus. : B - bus. : RF signal path. : earth - ground. : earth - chassis.

ALB ALT ALR

Note : The components identified by shading
and marked are critical for safety. Replace only with the part numbers specified in the parts list.
Note : Les composants identifis par une trame et
par une marque sont d'une importance critique pour la scurit. Ne les remplacer que par des pices de numro spcifi. specified.

5-2. BLOCK DIAGRAMS (1)

CN1201

R AUDIO

IC001 MICRO, VIDEO PROCESSOR, ROM, AUDIO, VIDEO SWITCH

L AUDIO 2

CN001 TO SPEAKERS
S601 PH601 ISOLATOR VD+ VP
5 IC604 DUAL DC REGULATOR

+3.3V STBY

XTAL IN 63

XTAL OUT 64

J1200 CN601

1 LOWB IN BOOST V- DY3

OUT V DY H- DY+ H- DYH DY V- DYV- DY+ 6 V- DY+

IC501 V OUTPUT

IC002 REMOTE CONTROL RECEIVER

REF H- DYH- DY-

IC201 AUDIO AMP

DY ASSY

+5V STBY

AUD OUT/CV6520 48

1 IN/INL
LINE FILTER T601 RELAY RY601

MAIN RECT D601

OUT/L 14

AUDIO MUTE 5

A board IC Voltage Table
IC Voltage Table Ref No Pin No Voltage (V) 0 3.2 2.12 2.0 2.3 8.0 IC001 5.4.0 1.4 1.3.8 3.8 5.IC34 3.5 3.6 1.9 0.3 3.6 1.1.4 3.9 1.8 3.3 3.49 1.0 3.6 2.8 2.51
20us/div 20us/div 20us/div 5ms/div
A board Semiconductor Voltage Table
Ref Q013 (e) 0 (b) 0.7 (c) 0 Ref Q604 (e) 0 (b) 0 (c) 2. 5

Ref No

Pin No Voltage (V)

Q0 3.3 Q0 5. 6

ICICIC12 0.2 2.2.5 2.5 2.56 5.2 3.58 3.1 3.62 3.IC12 14

4.8 0.4 0

Q212 Q401 Q411

0 4.8 1.1

0.7 4.2 1.7

0 1.8 4.2

Q601 5.6 4.8 5.3 Q606 10.4.5 86.7
Q602 14.2 5.Q607 -82.4 -79.9 10.9

QQ0 2.5 95.2

7.1 5.0 8.1 -3.3.2 3.0.3 -12.6 0.2 13. 9 0.3 1. 4 2. 3 1.8 2. 4 1.6 6. 4 -80.4 -80.5 -80.2 -80.2 -81.5 -81.6 -77.8 -81.8 -76 -81.9 -79.4 16.14.4 86. 4. 0 11. 3 0. 0 11.35

A board Location Table

DIODE D001 D002 D003 D004 D006 D007 D008 D010 D011 D012 D013 D014 D016 D017 D018 D019 D020 D035 D036 D051 D101 D103 D104 D210 D211 D212 D402 D404 D405 D406 D407 D408 D412 D414 D420 D421 D423 D424 J-2 J-4 J-2 M-8 M-8 J-2 L-1 G-2 H-2 J-2 M-8 M-8 J-2 L-1 G-2 L-1 M-8 L-2 L-2 K-1 B-1 E-2 E-2 I-5 I-5 I-5 B-2 I-2 B-2 B-2 B-3 B-2 C-3 B-3 B-1 C-2 B-2 M-2 D435 D436 D501 D502 D503 D504 D505 D506 D507 D512 D513 D514 D534 D535 D536 D537 D538 D539 D573 D601 D602 D604 D610 D611 D612 D613 D614 D615 D616 D617 D618 D619 D620 D621 D623 D627 D631 D632 D633 A-2 A-3 D-9 D-9 I-1 H-2 J-1 D-5 J-1 D-8 D-9 C-9 D-4 E-6 B-6 C-4 F-6 B-5 F-5 I-9 K-5 F-9 J-5 G-5 G-5 J-6 K-8 H-5 G-6 G-6 H-6 H-6 M-5 J-5 J-5 K-7 L-6 L-5 L-5 IC001 IC002 IC003 IC004 IC401 IC501 IC531 IC601 IC602 IC604 IC608 IC609 IC1201 Q013 Q016 Q212 Q401 Q411 Q532 Q533 Q535 Q601 Q602 Q603 Q604 Q606 Q607 Q608 Q609 D634 D639 D640 D1201 D1203 D1204 IC K-2 M-8 I-2 K-4 I-2 D - 10 E-4 F - 10 F-7 H-5 L-6 L-6 H-4 TRANSISTOR K-3 I-3 I-5 C-1 D-1 D-4 A-6 B-4 K-5 G-5 G-5 G-5 G - 10 G-9 J-6 J-6 F - 10 I-6 L-5 H-1 I-4 H-4

C board Waveforms

20us/div 20us/div 20us/div 20us/div

A board Waveforms

1-419-187-11 1-452-032-00 1-452-094-00 1-453-345-11 1-452-728-61 1-529-711-11 1-529-710-11 1-571-433-21 1-765-286-11 1-776-860-11 8-738-836-05 8-451-505-11 1-251-839-21 8-598-535-00 8-598-531-00
COIL DEGAUSSING MAGNET, DISK; 10MM MAGNET, ROTATABLE DISK; 15MM TRANSFORMER ASSY, FLYBACK (NX-1748//M3A4) COIL, NA ROTATION (RT-154) SPEAKER (8CM) (KV-21LT1) SPEAKER (5x9CM) (KV-21FT2) SWITCH, PUSH (AC POWER) CORD, POWER (KV-21LT1B/21LT1E/21LT1K/21FT2K) POWER CORD, FILTER (KV-21LT1U) PICTURE TUBE (A51LPT60X) (SD-313) DEFLECTION YOKE (Y21RSA-S) CAP ASSY, HIGH VOLTAGE FRONTEND BTF-EF411(KV-21LT1B) FRONTEND BTF-EC401(KV-21LT1E)
8-598-537-00 FRONTEND BTF-EP401(KV-21LT1K/KV-21FT2K) 8-598-527-00 FRONTEND BTF-EU601(KV-21LT1U)
ACCESSORIES AND PACKAGING MATERIALS
1-249-429-11 CARBON < VARIABLE RESISTOR >
1-241-656-21 RES, ADJ, METAL FILM 110M

REMOTE COMMANDER

1-418-476-21 REMOTE COMMANDER (RM-887)
*4-205-481-21 MANUAL, INSTRUCTION (KV-21LT1B) (GERMAN/FRENCH/ITALIAN/DUTCH) *4-205-481-71 MANUAL, INSTRUCTION (KV-21LT1B) (ENGLISH) *4-205-481-11 MANUAL, INSTRUCTION (KV-21LT1E) (GERMAN/GREEK/TURKISH) *4-205-481-51 MANUAL, INSTRUCTION (KV-21LT1E) (SPANISH/PORTUGUESE/FINNISH/SWEDISH/ DANISH/NORWEGIAN) *4-205-481-61 MANUAL, INSTRUCTION (KV-21LT1E) (ITALIAN) *4-205-481-41 MANUAL, INSTRUCTION (KV-21LT1K) (BELGIAN/CZECH/ENGLISH/DUTCH/ POLISH/RUSSIAN/SLOVAKIAN) *4-205-481-31 MANUAL, INSTRUCTION (KV-21LT1U) (ENGLISH) *4-205-400-41 MANUAL, INSTRUCTION (KV-21FT2K) (BELGIAN/CZECH/ENGLISH/DUTCH/ POLISH/RUSSIAN/SLOVAKIAN) *4-395-957-01 BAG, PROTECTION *4-205-642-01 *4-205-407-01 *4-205-675-01 *4-205-404-01 *4-205-674-01 *4-205-401-INDIVIDUAL CARTON (KV-21LT1) INDIVIDUAL CARTON (KV-21FT2) CUSHION (UPPER) (ASSY) (KV-21LT1) CUSHION (UPPER) (ASSY) (KV-21FT2) CUSHION (LOWER) (ASSY) (KV-21LT1) CUSHION (LOWER) (ASSY) (KV-21FT2)
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.
The TRACE software that is supplied with the interface allows you to: Read, restore and compare NVM contents via the I2C bus Acknowledge check of all I2C devices in the TV set Read Error Codes (emulation of the Error Reader tool) With the optional IR Add-on kit, the following features can be added: Remote Commander emulation User programmable Functional Check through Infrared Fast and documented Test Mode setting of all Sony TV chassis Additional features such as Adjustments and Troubleshooting are available in chassis-dependent software modules. Please contact your local Sony Service organisation for the latest information.