Sony KV-EF34N90 Service manual

MODEL COMMANDER DEST. CHASSIS NO.

KV-EF34N90 RM-913 TAIWAN SCC-P13EA

MODEL COMMANDER DEST. CHASSIS NO.

CHASSIS

TRINITRON

COLOR TV

SERVICE MANUAL

BG-3S

RM-913

SPECIFICATIONS

Note

Power requirements 110 V AC, 50/60 Hz Power consumption (W) Indicated on the rear of the TV Television system M Color system PAL, SECAM, NTSC4.43, NTSC3.58 Stereo/Bilingual system B/G

MTS B/G

Teletext Language English, Chinese Channel coverage

M VHF: A2 to A13 / UHF: A14 to A69

CATV: A-6 to A-2, A to W+4, W+6 to W+29

˘ (Antenna) 75-ohm external terminal Audio output 15W + 15W 10% distortion Number of terminal

D (Video) Input: 4 Output: 1 Phono jacks; 1 VP-P, 75 ohms ≥ (Audio) Input: 4 Output: 1 Phono jacks; 500 mVrms

(S Video) Input: 2 Y : 1 Vp-p, 75 ohms,

unbalanced, sync negative

C : 0.286 Vp-p, 75 ohms

(Component Video)

Input: 1 Phono jacks; Y : 1.0 Vp-p,

75 ohms, sync negative CB : 0.7 Vp-p, 75 ohms CR : 0.7 Vp-p, 75 ohms Audio : 500 mVrms

2 (Headphone) Output: 1 Stereo minijack

Picture tube 34 inch

Tube size (mm) 859 (Measured diagonally) Screen size (mm) 800 (Measured diagonally)

Dimension (w/h/d, mm) 859 × 660.5 × 573.5 Mass (kg) 83

CAUTION

SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR CARBON PAINTED ON THE CRT, AFTER REMOVING THE ANODE.

Design and specifications are subject to change without notice.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

KV-EF34N90

RM-913

Section Title Page

SELF DIAGNOSIS FUNCTION ................................ 4

1. GENERAL........................................................................ 8

2. DISASSEMBLY

2-1. Rear Cover Removal ................................................ 28

2-2. Speaker Box Removal ............................................. 28

2-3. Chassis Assy Removal ............................................. 28

2-4. Service Position ....................................................... 28

2-5. D2 and DH Boards Removal ................................... 29

2-6. J1 Board RF Splitter Removal ................................. 29

2-7. P Boards Removal ................................................... 29

2-8. A and B Boards Removal ........................................ 30

2-9. H1 Board Removal .................................................. 30

2-10. Demagnetization Coil Removal .............................. 30

2-11. Top Switch Removal................................................ 30

2-12. Picture Tube Removal.............................................. 31

3. SET-UP ADJUSTMENTS

3-1. Beam Landing.......................................................... 32

3-2. Convergence............................................................. 33

3-3. Focus Adjustment .................................................... 34

3-4. Neck Assy Twist Adjustment................................... 35

3-5. G2 (Screen) and White Balance Adjustments ......... 37

3-6. Frequency (Free Run) Adjustment .......................... 37

4. CIRCUIT ADJUSTMENTS

4-1. Adjustments with Commander ................................ 51

4-2. Adjustment Method ................................................. 51

4-3. Picture Quality Adjustments .................................... 59

4-4. A Board Adjustment After IC003 (Memory)

Replacement ............................................................. 60

4-5. Picture Distortion Adjustment ................................. 61

Section Title Page

5. DIAGRAMS

5-1. Block Diagram ......................................................... 51

5-2. Frame Schematic Diagram ...................................... 59

5-3 Circuit Boards Location .......................................... 63

5-4. Schematic Diagrams and Printed Wiring Boards ... 63

(1) Schematic Diagram of A (1/2) Board ..................... 67

(2) Schematic Diagram of A (2/2) Board ..................... 71

(3) Schematic Diagram of B(1/2) Board....................... 75

(4) Schematic Diagrams of B(2/2) and F Boards ......... 78

(5) Schematic Diagram P (1/3) Board ......................... 89

(6) Schematic Diagram of P (2/3) Board ..................... 92

(7) Schematic Diagrams of P (3/3), J1,B4 Boards ...... 95

(8) Schematic Diagrams of C and H1 Boards ............. 99

(9) Schematic Diagrams of VM2 and DH Boards ....... 106

(10) Schematic Diagram of D2 Board ........................... 111

5-5. Semiconductors ....................................................... 113

6. EXPLODED VIEWS

6-1. Picture Tube ............................................................ 116

6-2. Chassis .................................................................... 117

7. ELECTRICAL PARTS LIST ..................................... 118

RM-913

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 occurrence data stored in memory to reveal past problems and how often these problems occur.

1. DIAGNOSTIC TEST INDICATORS

When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the lamp will identify the first of the problem areas.

Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.

Diagnostic

Item

Description

• Power does not turn on

• +B overcurrent (OCP) or overvoltage (OVP)

• Vertical deflection stopped

• Horizontal deflection overdrive

• White balance failure (no PICTURE)

• Micro reset

No. of times

STANDBY/TIMER

lamp flashes

Does not light

2 times

5 times

—

Self-diagnostic

display/Diagnostic

result

—

002:000 or 002:001~255 003:001~255 004:001~255

at the same time

005:000 or 005:001~225

101:00 or

101:001~225

Probable

Cause

Location

• Power cord is not plugged in.

• Fuse is burned out F4601 (F Board)

• H.OUT Q511 is shorted. (A board)

• IC701 is shorted. (C board)

• -13V is not supplied. (A board)

• IC 503 faulty (A board)

• G2 is improperly adjusted. (Note 2)

• CRT problem.

• Video OUT IC701 is faulty. (C board)

• IC301 is faulty. (A board)

• No connection A board to C board.

• Discharge CRT (C Board)

• Static discharge

• External noise

Detected

Symptoms

• Power does not come on.

• No power is supplied to the TV.

• AC power supply is faulty.

• Power does not come on.

• Load on power line is shorted.

• Has entered standby state after horizontal raster.

• Vertical deflection pulse is stopped.

• Power line is shorted or power supply is stopped.

• No raster is generated.

• CRT cathode current detection reference pulse output is small.

• Power is shut down shortly, after this return back to normal.

• Detect Micro latch up.

Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.

The symptom that is diagnosed first by the microcontroller is displayed on the screen.

Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.

SELF DIAGNOSTIC FUNCTION

KV-EF34N90

RM-913

2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT

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.

RM-913

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 (mode volume [+]).

Self-Diagnosis screen display

5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to “0”.

Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.

[Clearing the result display]

To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the diagnostic screen is being displayed.

Channel [8] / 0

[Quitting Self-diagnostic screen]

To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.

KV-EF34N90

RM-913

6. SELF-DIAGNOSTIC CIRCUIT

[+BovercurrentªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604 (A board). If Q604

(A board) go to ON and the voltage to pin 18 of IC301 (A board) should go down when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.

[Horizontaldeflectionoverdrive] Occurs when an overdrive on H drive line is detected by D526 (A board). Power supply

will be shut down when detect it.

[Verticaldeflectionstopped] Occurs when an absence of the vertical deflection pulse is detected by Q509 (A board)

and IC001 (A board) shut down the power supply.

[Verticaldeflectionovercurrent] Occurs when an overcurrent on V drive line is detected by Q507 (A board). Power supply

will be shut down when detect this by IC001 (A board).

[Whitebalancefailure] If the RGB levels* do not balance or become low level within 5 seconds, this error will be

detected by IC301 (A board). TV will stay on, but there will be no picture.

* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)

KV-EF34N90

1Two claws

2Chassis

4Four screws

(+BVTP 4X16)

3Tree screws (+BVTP 4X16)

1Tree screws (+BVTP 4X16)

2Tree screws (+BVTP 4X16)

1Two screws (TP + TWH 4X25)

2SPEAKER BOX L/R ASSEMBLY

2-1. REAR COVER REMOVAL

– 28 –

2-2. SPEAKER BOX REMOVAL

SECTION 2

DISASSEMBLY

2-3. CHASSIS ASSY REMOVAL

2-4. SERVICE POSITION

RM-913

– 29 –

1screws (+BVTP 4X16)

2screw

(+BVTP 3X12)

1screw (+BVTP 3X12)

5Two screws

(+BVTP 3X12)

3Two claws

4Terminal bracket

6J1 board

8RF splitter

7P-P cable

1Three connector

2P board

P board

Driver

P board

Remove the P Board while take off Connector’s craw by tip of screwdriver,etc.

1Claw

4Claw

7Claw

8Blacket

5HV block

2D2 board

CN4603

CN4602

CN4601

9DH board

3Two screws

(+BVTP 3X12)

6Two screws (+BVTP 3X12)

CN3803

CN3802

2-5. D2 AND DH BOARDS REMOVAL

2-6. J1 BOARD AND RF SPLITTER REMOVAL

2-7. P BOARD REMOVAL

KV-EF34N90

RM-913

KV-EF34N90

6Two DGC holders

4Two CRT supporter

1Two DGC clips

3DGC band

5Demagnetization

coil

2Two hooks

Cushion

Cushion (160X45)

1Three screws (+PWH 3X12)

4A board

3B board

2Four connector

1Two screws

(+BVTAP 3X12)

2Two claws

3H1 board

6Three claws

4Two claws

4Top switch

(with top switch holders)

6connector

5Two top switch

holders

1Two screws (+BVTP 3X12)

2-8. A AND B BOARDS REMOVAL

– 30 –

2-9. H1 BOARD REMOVAL

2-10. DEMAGNETIZATION COIL REMOVAL

2-11. TOP SWITCH REMOVAL

RM-913

Anode button

8C board

7Chassis assenbly

9Neck assembly

2Speaker box(L)

assembly

4Speaker box(R) assembly

0Deflection yoke

!∞Two springs

6Two claws

!™Two DGC clip

!£Two fooks

!§Two CRT

supportor

!¢DGC band

!§Two DGC holder

!¡Anode cap

!ªFour nuts

@ºPicture tube

Cution

3Two screws (TP+TWH 4X25)

5Two screws (TP+TWH 4X25)

!¶Demagnetization coil

2-12. PICTURE TUBE REMOV AL

•REMOVAL OF ANODE-CAP

NOTE : After removing the anode, short circuit the anode of the picture tube and

the anode cap to the metal chassis, CRT shield or carbon paint on the CRT.

•REMOVING PROCEDURES

– 31 –

1 Turn up one side of the rubber cap in the direction indicated by the arrow a.

2 Using a thumb pull up the rubber cap firmly in the direction indicated by the arrow b.

3 When one side of the rubber cap is separated from the anode button, the anode-cap

can be removed by turning up the rubber cap and pulling it up in the direction of the arrow c.

• HOW TO HANDLE AN ANODE-CAP

1 Do not damage the surface of anode-caps with sharp shaped objects. 2 Do not press the rubber too hard so as not to damage the inside of anode-cap.

A metal fitting called the shatter-hook terminal is built into the rubber.

3 Do not turn the foot of rubber over too hard.

The shatter-hook terminal will stick out or damage the rubber.

KV-EF34N90

RM-913

KV-EF34N90

RM-913

SECTION 3

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 rated power

supply voltage unless otherwise noted.

Controls and switches should be set as follows unless otherwise noted:

PICTURE control........................................................... normal

BRIGHTNESS control................................................... normal

................................................................................................................................................................................................................................

Preparation :

• In order to reduce the influence of geomagnetism on the set's

picture tube, face it east or west.

• Switch on the set's power and degauss with the degausser.

Perform the adjustments in the following order :

1. Beam Landing

2. Convergence

3. Focus

4. White Balance Note : Test Equipment Required.

1. Color-bar/Pattern Generator

2. Degausser

3. Oscilloscope

3-1. BEAM LANDING

1. Input a white signal with the pattern generator. Contrast Brightness

2. Position neck assy as shown in Fig3-1.

3. Set the pattern generator raster signal to a green raster.

4. Move the deflection yoke to the rear and adjust with the purity control so that the green is at the center and the blue and the red take up equally sized areas on each side. (See Figures 3-1 through 3-3.)

5. Move the deflection yoke forward and adjust so that the entire screen is green. (See Figure 3-2.)

6. Switch the raster signal to blue, then to green and verify the condition.

7. When the position of the deflection yoke has been decided, fasten the deflection yoke with the screws and DY spacers.

8. If the beam does not land correctly in all the corners, use a magnet to adjust it. (See Figure 3-4.)

}

normal

Neck assy

Fig. 3-2

Red

Green

Fig. 3-3

Purity control corrects this area.

Deflection yoke positioning corrects these areas.

Blue

Disk magnets or rotatable disk magnets correct these areas (a-d).

Behind the G2 edge

G2G1 G3

Fig. 3-1

Fig. 3-4

– 32 –

KV-EF34N90

RM-913

3-2. CONVERGENCE ADJUSTMENT

Preparation :

• Before starting this adjustment, adjust the focus, horizontal size

and vertical size.

• Set the PICTURE and BRIGHTNESS 50%.

• Cross hatch / Dot pattern.

(1) Horizontal and Vertical Static Convergence

Center dot

R G B

H. STAT VR

R G B

V. STAT

Magnet

Y magnet

1 V. STAT

b b

2 H. STAT VR

RGGBB

B G R

RV702 H. STAT

C Board

1. (Moving horizontally), adjust the H.STAT control so that the red, green and blue dots are on top of each other at the center of the screen.

2. (Moving vertically), adjust the V.ST AT magnet so that the red, green and blue dots are on top of each other at the center of the screen.

3. If the H.STAT variable resistor cannot bring the red, green and blue dots together at the center of the screen, adjust the horizontal convergence with the H.STAT variable resistor and the V.STAT magnet in the manner given below. (In this case, the H.STAT variable resistor and the V.STAT magnet influence each other, so be sure to perform adjustments while tracking.)

Purity

V.STAT

– 33 –

KV-EF34N90

RM-913

4 BMC (Hexapole) Magnet.

If the red, green and blue dots are not balanced or aligned, then use the BMC magnet to adjust in the manner described below.

RG B R G B R GB

5 Y separation axis correction magnet adjustment.

1. Receive the cross-hatch signal and adjust [PICTURE] to [MIN] and [BRIGHTNESS] to [STANDARD] .

2. Adjust the Y separation axis correction magnet on the neck assembly so that the horizontal lines at the top and bottom of the screen are straight.

Neck assy Neck assy

Blue

Red

(2) Dynamic Convergence Adjustment Preparation:

• Before starting this adjustment, adjust the horizontal static

convergence and the vertical static convergence

• Set the PICTURE and BRIGHTNESS to normal.

1. Adjust TLH. (TLH correction piece)

1 Receive the dot/hatch pattern signal and adjust picture quality

by the menu.

2 Correct horizontal mis-conv ergence of red and blue of both sides

on the X axis. When red is outside insert BMC magnet to right side (THL+) views from DY neck. And when blue is outside, insert it to left side (THL–) and take both sides.

(B)B(R)

TLH +

(R)

(B)

TLH -

2. Adjust XCV core.

To able to become balance of XCV on the X axis well.

3. Adjust V-TILT.

Correct the vertical mis-convergence of red and blue of vertically sides on the Y axis.

4. Adjust YCH.

Adjust horizontal mis-convergence of red and blue of vertically sides on the Y axis. Mentioned above steps 2 to 4 are adjusting respectively perform minuteness tracking.

VM board

Red

VM board

Blue

Note

1. The Red and Blue magnets should be equally far from the horizontal center line.

2. Do not separate the Red and Blue magnets too far. (Less than 8 mm)

VM board

H-TRPYCH

TLV

BMC magnet

C board

RV702

– 34 –

KV-EF34N90

RM-913

(3) Screen-corner Convergence

a-d : screen-corner misconvergence

Fix a Permalloy assy corresponding to the misconverged areas.

3-3. FOCUS ADJUSTMENT

Note

Focus adjustment should be completed before W/B adjustment.

(1) Receive digital monoscope pattern. (2) Set "A/V CONTROL" to "STANDARD". (3) Adjust FOCUS VR so that the center of the screen becomes

justfocus. (4) Change the receiving signal to white pattern and blue back. (5) Confirm MAGENTA RING should not be over the limit sam-

ple. In case MAGENTA RING is over the limit sample, adjust

FOCUS VR to take tracking of MAGENTA RING and FO-

CUS.

Permalloy assembly

Focus

Screen

FLYB ACK TRANSFORMER (T503)

3-4. NECK ASSY TWIST ADJUSTMENT

(1) Receive dot/hatch pattern. (2) Turn FOCUS VR fully counter-clockwise. (3) Confirm the dot shape at the screen center. (Fig. 3-4) (4) Resume FOCUS VR.

Note

In case of turning NECK ASSY, loosen the screw 3 turns. Do not move the position.

Turn NECK ASSY clockwise.

– 35 –

Turn NECK ASSY counter clockwise.

Fig. 3-4

KV-EF34N90

RM-913

3-5. G2 (SCREEN) AND WHITE BALANCE

ADJUSTMENTS

1. G2 (SCREEN) ADJUSTMENT

1) Set the PICTURE and BRIGHTNESS to normal.

2) Put to VIDEO input mode without signals.

3) Connect R, G and B of the C board cathode to the oscilloscope.

4) Adjust G2 (Screen) volume to the value below.

175 V ±2(VDC)

0 V

2. DRIVE LEVEL ADJUSTMENT

1) Set to Service Mode (Refer Section 4-1: ADJUSTMENTS WITH COMMANDER).

2) Input PAL Colorbar Signal.

3) Set to VP7 (Service Mode) "DYC" = 0.

4) Set VP22 GON to "0",VP23 BON to "0".

5) Set to A/V mode to "PERSONAL".

6) Connect an osilloscope to pin 2 of CN705 on the C board.

7) Set the picture to maximum and Brightness to minimum. Enter into the Service Mode.

8) Using the

9) Using the [3] and [6] buttons on the Remote Commander adjust until the oscilloscope waveform has an amplitude of 1.64 ± 0.05Vp-p.

[1] and [4] buttons select SAJ0 "PMX".

4. SUB PICTURE BRIGHTNESS ADJUSTMENT

1) Set to service mode (Refer Section 4-1: ADJUSTMENTS WITH COMMANDER).

2) Input a PAL RF colorbar signal through Sub TUNER (TU3301).

3) BRIGHTNESS ....RESET.

PICTURE ............MINIMUM

4) A:Select SBR (WHB7) with

level with [3] and [6] so that the second stripe from the right is dimly lit.

B:Adjust RV5301 on B board so that the level of CN1310 0

pin is within spec.

White

A: second from the right

[1] and [4], and adjust SBR (WHB7)

0.68 ± 0.01Vp-p

Black

3-6. FREQUENCY (FREE RUN) ADJUSTMENT

(1) Select Video 1 (no signal). (2) Connect a frequency counter across pin !ª (FH) IC301 of A

Board.

(3) Select VP (OF) HOS with [1] and [4] of the commander then

adjust to 15.690kHz ± 25Hz using [3] and [6].

1.64 ± 0.05Vp-p

10) Reset to VP7 "D YC" = 1 and VP22 "GON" to 1, VP23 BON to "1".

3. WHITE BALANCE ADJUSTMENT

1) Set to Service Mode (Refer Section 4-1: ADJUSTMENTS WITH COMMANDER).

2) Input white raster signal.

3) Set the following condition. PICTURE minimum, BRIGHTNESS 50%

4) Select GCT (WHB 4) and BCT (WHB 5) with adjust the level with [3] and [6] for the best white balance.

5) Set the PICTURE to maximum.

6) Select GDR (WHB 1) and BDR (WHB 2) with [1] and [4], and adjust the level with [3] and [6] for the best white balance.

7) Write into the memory by pressing [MUTING] then [0].

[1] and [4], and

– 36 –

SECTION 4

231 564 897 0

ENTER

JUMP

PIC

MODE

MUTING DISPLA Y

POWER

CHVOL

MTS

TV/VIDEO FREEZE

SWAP

PIP

VIDEO TV

MENUTWIN

PIP CH

ZOOM

LEFT

FAVORITE

INDEX

ZOOM

RIGHT

SURROUND

WAKE UP

SLEEP

SOUND

MODE

PIP CH

VIDEO

POWER

TITLE

CIRCUIT ADJUSTMENTS

4-1. ADJUSTMENTS WITH COMMANDER

Service adjustments are made with the RM-951 that comes with this unit.

a. ENTERING SERVICE MODE

With the unit on standby

↓

[DISPLAY]

↓

VOL (+)

↓

[POWER]

This operation sequence puts the unit into service mode.

b. METHOD OF CANCELLATION FROM SERVICE

MODE

Set the standby condition (Press [POWER] button on the commander), then press [POWER] button again, hereupon it becomes TV mode.

KV-EF34N90

RM-913

1, 4 Select the adjustment item.

↓

3, 6 Raise/lower the data value.

↓

[MUTING] Writes.

↓

- Executes the writing.

7, - All the data becomes the values in memory. 8, - All user control goes to the standard state. 5, - Service data initialization (Be sure not to use

usually.)

2, - Write 50Hz adjustment data to 60Hz, or vice

versa.

c. METHOD OF WRITE INTO MEMORY

1) Set to Service Mode.

2) Press [1] (UP) and [4] (DOWN), select an item of adjustment.

3) Press [MUTING] button and it will indicate WRITE on the screen.

4) Press [0] button to write into memory.

d. MEMORY WRITE CONFIRMATION METHOD

1) After adjustment, pull out the plug from AC outlet, and then plug into AC outlet again.

2) Turn the power switch ON and set to Service Mode.

3) Call the adjusted items again to confirm adjustments were made.

The screen display is :

Device Name

Item No

GEO

Suffix No (OEM Code)

Software version

Item Name

1.0C

HPS 1C SERVICE

59 7F 000A0008S

Marking of virgin NVM

Data

Mode

Total Power-On time (hours)

PAL, SECAM : 50 NTSC : 60

RM-913

– 37 –

KV-EF34N90

RM-913

4-2. ADJUSTMENT METHOD

Item Number 00 of device GEO This explanation uses H-Position as an example.

1. Select “GEO 00 HPS” with the 1 and 4 buttons.

2. Raise/lower the data with the 3 and 6 buttons.

3. Select the optimum state. (The standard is 1F for P AL reception.)

4. Write with the [MUTING] button. (The display changes to WRITE.)

5. Execute the writing with the - button. (The WRITE display will be changed to red color while excuting, and back to SERVICE.)

Use the same method for all Items. Use 1 and 4 to select the adjustment item, use 3 and 6 to adjust, write with [MUTING], then execute the write with -.

Note : 1. In [WRITE], the data for all items are written into memory

together.

2. For adjustment items that have different standard data between 50Hz or 60Hz, be sure to use the respective input signal after adjustment.

GEO 00

008S 1.0C

GEO 00 008S 1.0C

1F SERVICE 50HPS 7F 0 000A59

1F WRITE 50HPS 7F 0 000A59

Written with [MUTING]

1F SERVICE 50HPS 7F 0 000A59

GREEN Adjusted with [3]

and [6] buttons.

GREEN

RED

The WRITE display then the display returns to a green SERVICE.

Write executed with [0]

– 38 –

Adjustment Item Table

Category Functionality Initial Range Function Table & Note Register Device & Slave RAM Address

GEO 0 HPS 0F 3F H Position 50/60/MID50/MID60 12 (7-2) CXA2130S(88H) 355 (7-2)

4 VPS 23 3F V Position 50/60/MID50/MID60 0F (7-2) 354 (7-2)

WHB 0 RDR 25 3F R Drive DYNAMIC/others 09 (7-2) CXA2130S(88H) A1 (7-2)

– 39 –

SAJ 0 PMX 2B 3F Picture Maximum Data 03 (7-2) CXA2130S(88H) 105

VP 0 EHT 5 0F EHT Comp 50/60HZ 15 (3-0) CXA2130S(88H) 9A (3-0)

No. Name Data (Bit Range) Address (Bit Range)

1 HSZ 26 3F H Size 50/60/MID50/MID60 11 (7-2) 36A (7-2) 2 PAP 22 3F Pin Amp 50/60HZ 13 (7-2) 98 (7-2) 3 TLT 5 0F Trapezium 50/60/MID50/MID60 15 (7-4) 36B (7-4)

5 VSZ 16 3F V Size 50/60/MID50/MID60 0E (7-2) 369 (7-2) 6 SCO 8 0F S Correction 50/60HZ 10 (7-4) 95 (7-4) 7 VLN 8 0F V Linearity 50/60HZ 10 (3-0) 95 (3-0) 8 BOW 8 0F AFC Bow 50/60HZ 16 (7-4) 9B (7-4)

9 AGL 8 0F AFC Angle 50/60HZ 16 (3-0) 9B (3-0) 10 UPN 24 3F Upper Pin 50/60HZ 14 (7-2) 99 (7-2) 11 LPN 26 3F Lower Pin 50/60HZ 18 (7-2) 9D (7-2) 12 HBL 0 1 H Blanking on/off 18 (1) 6D (1) 13 LBL 7 0F Left H Blanking 50/60HZ 17 (7-4) 9C (7-4) 14 RBL 7 0F Right H Blanking 50/60HZ 17 (3-0) 9C (3-0)

1 GDR 25 3F G Drive DYNAMIC/others 0A (7-2) A2 (7-2)

2 BDR 25 3F B Drive DYNAMIC/others 0B (7-2) A3 (7-2)

3 RCT 7 0F R Cutoff SECAM/others 07 (3-0) A5 (3-0)

4 GCT 7 0F G Cutoff SECAM/others 08 (7-4) A6 (7-4)

5 BCT 7 0F B Cutoff SECAM/others 08 (3-0) A6 (3-0)

6 BMN 18 1F Brightness Minimum Data 06 (7-2) 106

7 SBR 2E 3F Sub Brightness Control 06 (7-2) 107

1 SHU 0 0F Sub Hue Control TV/Video 05 (7-2) 108

2 SSH 4 0F Sub Sharpness Control TV/Video 07 (7-4) 109

3 SCL 20 3F Sub Color Control NTSC/others 04 (7-2) 10A

1 GMA 2 03 Gamma Correction NTSC/others 0B (1-0) 363 (1-0)

(also separated for STANDARD) 2 YDL 8 0F Y Delay 3 SST 2 03 SECAM ID Start Position 1B (1-0) 70 (1-0) 4 SSP 1 03 SECAM ID Stop Position 1B (3-2) 70 (3-2) 5 SLV 1 03 SECAM ID Level 1C (1-0) 71 (1-0) 6 SBF 22 3F SECAM BELL fO 1C (7-2) 71 (7-2) 7 DYC 1 1 Dynamic Color on/off 0A (1) 5F (1) 8 ABL 0 1 ABL Mode Switching (except STANDARD) 09 (1) 5E (1) 9 VTH 1 1 ABL Detection Vth Switching 09 (0) 5E (0)

01 SFO 1 1 FO Switching for Sharpness NTSC/others 05 (1) 356 (1) 11 DCX 1 1 DC Trans. Ratio Switching 06 (1) 5B (1) 12 SHT 1 1 Pre-/Overshoot ratio Switch NTSC/others 06 (0) 357 (0)

PAL/SECAM/NTSC/DVD

0C (3-0) 366

KV-EF34N90

RM-913

KV-EF34N90

Adjustment Item Table

Category Functionality Initial Range Function Table & Note Register Device & Slave RAM Address

VP 13 HDW 0 1 H Drive Pulse Width Switch 00 (6) 55 (6)

AP 0 BCS 1 3 Bass Center Shift #4 (3-0) TDA7315(80H) 358 (1-0)

– 40 –

MSP 0 WST 15 FF W/G Stereo Threshold MSP3415D(84H) 165

RM-913

No. Name Data (BIt Range) Address (Bit Range)

14 AFC 0 03 AFC Gain Control TV/Video/Text 0F (1-0) 1C7 15 HOS 7 0F H Oscillation 0C (7-4) 61 (7-4) 16 HSS 0 1 Slice Level of H Sync Sep. 0D (1) 62 (1) 17 VSS 0 1 Slice Level of V Sync Sep. 0D (0) 62 (0) 18 HMS 1 1 Macro Vision C/m off/on 50/60Hz 0E (0) 93 (0) 19 YUV 0 1 YUV Switch Control 01 (0) 56 (0) 20 CDV 1 3 CD mode for Video 0D (5-4) 361 (5-4) 21 RON 1 1 R ON not memorized 01 (3) 56 (3) 22 GON 1 1 G ON not memorized 01 (2) 56 (2) 23 BON 1 1 B ON not memorized 01 (1) 56 (1) 24 PON 1 1 P ON not memorized 00 (7) 55 (7) 25 BLK 0 1 BLK Off 12 (0) 67 (0) 26 VMC 1 1 VM Off 13 (0) 68 (0)

1 TCS 1 3 Treble Center Shift #5 (3-0) 359 (1-0)

1 WBT EA FF W/G Bilingual Threshold 166 2 WLL 5 FF W/G Monaural Threshold 167 3 WAC 1 0F W/G Agreement Count 168 4 WDL 30 FF W/G Search Delay 169 5 NDL 20 FF NICAM Search Delay 16A 6 SDL 10 FF Stereo status Read Delay 16B 7 AGC 1 1 AGC Switch Auto/Constant 00BB (7) 116 (7) 8 REL 28 3F AGC Gain at Constant Mode 00BB (6-1) 116 (6-1) 9 CRM 0 1 Carrier muting on/off 00BB (9) 115 (1)

10 ACO 1 1 Audio Clock out on/off 0083 (5) 11A (5) 11 FP 1B 7F FM Prescale for non-M system 000E (7-0) 329 12 FPM 32 7F FM Prescale for M system 000E (7-0) 32A 13 FH 2D 7F FM Prescale for HDEV 000E (7-0) 32B 14 FHM 65 7F FM Prescale for HDEV and M 000E (7-0) 32C 15 WGP 2A 7F W/G Prescale 000E (7-0) 32D 16 NIP 6D 7F NICAM Prescale 0010 (7-0) 32E 17 ERR 50 FF Auto FM switch Threshold 0021 (10-3) 14F 18 VOL 6D FF Loud Speaker gain 0700 to 07FFh 0000 (11-4) 368

Adjustment Item Table

Category Functionality Initial Range Function Table & Note Register Device & Slave RAM Address

No. Name Data (Bit Range) Address (Bit Range)

LTI 0 LDH 1 1 Histogram Segment Selection 00 (2) TDA9178 (40H) 175 (2)

1 CFS 1 1 Contour Filter Selection 00 (3) 175 (3) 2 WLB 0 1 Letterbox Window Switch 00 (5) 175 (5) 3 VDC 1 1 Video Dependent Coring 00 (6) 175 (6) 4 DEM 0 1 Demonstration Mode 00 (7) 175 (7)

5 CDP 0 07 Luminance Delay 01 (2-0) 176 (2-0) 6 OSP 1 1 Overrule Smart Peaking 01 (5) 176 (5)

7 WPO 0 1 White Point Stretch Off 01 (4) 176 (4) 8 DSK 0 1 Skin T one Switch 02 (0) 177 (0) 9 ASK 0 1 Skin Tone Angle Selection 02 (1) 177 (1)

10 WSK 0 1 Skin Tone Width Selection 02 (2) 177 (2) 11 SSK 0 1 Skin Tone Size Selection 02 (3) 177 (3) 12 DGR 1 1 Green Enhancement Switch 02 (4) A9 (4) 13 DGT 7 7 Threshold of Green Enhancement Switch A9 (7-5) 14 GGR 0 1 Green Enhancement Gain 02 (5) 177 (5)

` 15 WGR 0 1 Green Enhancement Width 02 (6) 177 (6)

16 SGR 0 1 Green Enhancement Size 02 (7) 177 (7)

– 41 –

17 DBL 0 1 Blue Stretch Switch 03 (0) 178 (0) 18 GBL 0 1 Blue Stretch Gain Selection 03 (1) 178 (1) 19 SBL 0 1 Blue Stretch Size Selection 03 (2) 178 (2) 20 CDS 1 1 Color Dependent Sharpness 03 (3) A9 (3) 21 CST 7 7 Threshold of Color Dependent Sharpness A9 (2-0) 22 CTI 0 1 Color Transient Improvement 03 (4) 178 (4) 23 BON 0 1 Black offset Compensation 03 (5) 178 (5) 24 BTD 0 3F Adaptive Black Strecth 04 (5-0) 179 (5-0) 25 NLD 15 3F Non-Linearity Amplifier 05 (5-0) AA (5-0) 26 NLW 4 7 Step Width of Non-Linearity Amplifier 05 (5-0) AE (6-4) 27 VGD 20 3F Variable Gamma 06 (5-0) AB (5-0) 28 VGW 0 7 Step Width of Variable Gamma 06 (5-0) AE (2-0) 29 PKD 1A 3F Peaking Amplitude 07 (5-0) AC (5-0) 30 PKW 8 0F Step Width of Peaking Amplitude 07 (5-0) AF (7-4) 31 SPD 1F 3F Steepness Correction 08 (5-0) 17D (5-0) 32 CRD 13 3F Coring Level 09 (5-0) AD (5-0) 33 CRW 9 0F Step Width of Coring Level 09 (5-0) AF (3-0) 34 LWD 1F 3F Line Width Correction A9 (5-0) 17F (5-0) 35 SNM 1 7 S/N Mode under unreliable S/N Condition BO (2-0) 36 SNC 3 0F S/N Ratio Average Counter TV/Video B1 (3-0) 37 FMC 2 0F Feature Mode Matching Counter B2 (3-0)

KV-EF34N90

RM-913

KV-EF34N90

Adjustment Item Table

Category Functionality Initial Range Function Table & Note Register Device & Slave RAM Address

MID 0 HAT 1C FF H Phase for A-ch in Twin mode CXP86332 (6EH)

– 42 –

RM-913

No. Name Data (Bit Range) Address (Bit Range)

1 HAX 21 FF H Phase for A-ch in Index mode 2 VPA 0C FF V Phase for A-ch (common) 3 DLA 3 O7 Chroma Delay for A-ch 4 VJA 0 O3 V-Jitter Reduction for A-ch 5 CYA 10 FF Y-Clamp Level for A-ch 6 CUA 80 FF U-Clamp Level for A-ch 7 CVA 80 FF V-Clamp Level for A-ch 8 DPA 0 7F Clamp Delay Position for A-ch 9 HBT 22 FF H Phase for B-ch in Twin mode

10 HBI 20 FF H Phase for B-ch in PinP mode 11 HBX 21 FF H Phase for B-ch in Index mode 12 VPB 0C FF V Phase for B-ch except in Index 13 VBX 9 FF V Phase for B-ch in Index mode 14 DLB 3 O7 Chroma Delay for B-ch 15 VJB 0 O3 V-Jitter Reduction for B-ch 16 CYB 10 FF Y-Clamp Level for B-ch 17 CUB 80 FF U-Clamp Level for B-ch 18 CVB 80 FF V-Clamp Level for B-ch 19 DPB 0 7F Clamp Delay Position for B-ch 20 VJC 3 3 V-Jitter Reduction for C-ch 21 DLC 4 7 Chroma Delay for C-ch 22 YSD 1 7 YS Delay 23 ADA 0 1 AD Switch for A-ch 27 ADB 0 1 AD Switch for B-ch 25 DCA 0 3 Digital Input Color Signal Phase for A-ch 26 DCB 0 3 Digital Input Color Signal Phase for B-ch 27 ACA 0 1 ADC on/off for A-ch 28 ACB 0 1 ADC on/off for B-ch 29 WIA 0 3 Write Interlace Correction for A-ch 30 RIA 0 3 Read Interlace Correction for A-ch 31 WIB 0 3 Write Interlace Correction for B-ch 32 RIB 0 3 Read Interlace Correction for B-ch 33 OEA 0 1 Odd/Even Selection for A-ch 34 EIA 0 3 Reverse Interlace Correction for A-ch 35 OEB 0 1 Odd/Even Selection for B-ch 36 EIB 0 3 Reverse Interlace Correction for B-ch 37 OEC 0 1 Odd/Even Selection for C-ch 38 OES 0 1 Option 1 for Euro model 39 OID 1 1 Option 2 for Field ID 40 OVF 0 1 Option 3 for V LPF

+ 50 hidden pages

Sony KV-EF34N90 Service manual

KV-EF34N90 RM-913 TAIWAN SCC-P13EA

SPECIFICATIONS

TABLE OF CONTENTS

SELF DIAGNOSTIC FUNCTION

DISASSEMBLY

SET-UP ADJUSTMENTS

CIRCUIT ADJUSTMENTS