Sony TRINITRON KV-AR14M50 Manuale utente

REVISION HISTORY BX1

MODEL

KV-AR14M50

KV-AR14M80

KV-AR14P52

PA RT N O. : 9-872-365-02

CHASSIS

NO. SUFFIX DATE SUPP / CORR DESCRIPTION

1 -01 2003/8 -- 1st Issue

2 -02 2004/1 Supp-1 IC001 Part Number Change (Page 68)

CHASSIS

TRINITRON

COLOR TV

SERVICE MANUAL BX1

RM-W101

MODEL COMMANDER DEST. CHASSIS NO.

KV-AR14M50

RM-W101 Malaysia SCC-U96D-A

KV-AR14M50 RM-W101 GE SCC-V04C-A

KV-AR14M80 RM-W101 ME SCC-U90D-A

KV-AR14P52 RM-W101 Thailand SCC-U94J-A

MODEL COMMANDER DEST. CHASSIS NO.

– 2 –

KV-AR14M50/AR14M80/AR14P52

RM-W101

Note

Power requirements 110-240 V AC, 50/60 Hz

220-240 V AC, 50/60 Hz Malaysia

Power consumption (W) Indicated on the rear of the TV

Television system B/G, I, D/K, M

Color system PAL, PAL 60, SECAM, NTSC3.58, NTSC4.43

Channel coverage

B/G VHF: E2 to E12 / UHF: E21 to E69

CATV: S01 to S03, S1 to S41

IUHF: B21 to B68

CATV: S01 to S03, S1 to S41

D/K VHF: C1 to C12, R1 to R12 / UHF: C13 to C57, R21 to R60 /

CATV: S01 to S03, S1 to S41, Z1 to Z39

MVHF: A2 to A13 / UHF: A14 to A79 /

CATV: A-8 to A-2, A to W+4, W+6 to W+84

8(Antenna) 75-ohm external terminal

Audio output (Speaker) 3W + 3W

Number of terminal

DVideo Input: 2 Output: 1 Phono jacks; 1 VP-P, 75 ohms

≥Audio Input: 2 Output: 1 Phono jacks; 500 mVrms

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

unbalanced sync negative

C: 0.286 Vp-p, 75 ohms

(Component Input: 1 Phono jacks;

Video) Y: 1 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 14 in.

Tube size (cm) 37 Measured diagonally

Screen size (cm) 34 Measured diagonally

Dimension (w/h/d, mm) 414 x 352 x 410

Mass (kg) 13

Design and specifications are subject to change without notice.

SPECIFICATIONS

(KV-AR14M50/AR14M80)

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.

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 REMOVINGTHE

ANODE.

– 3 –

KV-AR14M50/AR14M80/AR14P52

RM-W101

Note

Power requirements 220-240 V AC, 50/60 Hz

Power consumption (W) Indicated on the rear of the TV

Television system B/G

Color system PAL, PAL 60, NTSC3.58 (AV IN), NTSC4.43

Stereo/Bilingual system A2 Bilingual B/G

Channel coverage

B/G VHF: E2 to E12 / UHF: E21 to E69

CATV: S01 to S03, S1 to S41

8(Antenna) 75-ohm external terminal

Audio output (Speaker) 3W + 3W

Number of terminal

DVideo Input: 2 Output: 1 Phono jacks; 1 VP-P, 75 ohms

≥Audio Input: 2 Output: 1 Phono jacks; 500 mVrms

(Component Input: 1 Phono jacks;

Video) Y: 1 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 14 in.

Tube size (cm) 37 Measured diagonally

Screen size (cm) 34 Measured diagonally

Dimension (w/h/d, mm) 414 x 352 x 410

Mass (kg) 13

Design and specifications are subject to change without notice.

SPECIFICATIONS

(KV-AR14P52)

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.

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 REMOVINGTHE

ANODE.

– 4 –

KV-AR14M50/AR14M80/AR14P52

RM-W101

TABLE OF CONTENTS

SELF DIAGNOSTIC FUNCTION ............................. 4

1. DISASSEMBLY

1-1. Rear Cover Removal ................................................. 8

1-2. Speaker Removal ...................................................... 8

1-3. Chassis Assy Removal .............................................. 8

1-4. Service Position ........................................................ 8

1-5. Terminal Bracket Removal ....................................... 8

1-6. A Board Removal ...................................................... 8

1-7. Picture Tube Removal ............................................... 9

2. SET-UP ADJUSTMENTS

2-1. Beam Landing ......................................................... 10

2-2. Convergence ............................................................ 11

2-3. Focus Adjustment ................................................... 13

2-4. G2 (SCREEN) Adjustments ................................... 13

2-5 White Balance Adjustment ..................................... 13

2-6 Sub Bright Adjustment ........................................... 13

3. CIRCUIT ADJUSTMENTS

3-1. Adjustment With Commander ................................ 14

3-2. Adjustment Method ................................................ 15

3-3. Picture Quality Adjustment .................................... 29

3-4. Deflection Adjustment ............................................ 29

3-5. Drive Adjustment .................................................... 30

3-6. Picture Distortion Adjustment ................................ 31

Section Title Page Section Title Page

4. DIAGRAMS

4-1. Block Diagram ........................................................ 32

4-2. Circuit Boards Location .......................................... 33

4-3. Schematic Diagram ................................................. 34

4-3-1. A Board — Processor (Block A) ................. 35

4-3-2. A Board — Audio (Block B) ....................... 36

4-3-3. A Board — Power Supply (Block C) .......... 38

4-3-4. A Board — Deflection (Block D) ................ 40

4-3-5. A Board — Tuner (Block E) ........................ 42

4-3-6. A Board — Jack (Block F) .......................... 44

4-3-7. C Board Schematic Diagrams ...................... 46

4-4. Voltage Measurement and Waveforms ................... 49

4-5. Printed Wiring Boards and Parts Location ............. 52

4-6. Semiconductors ....................................................... 55

5. EXPLODED VIEWS

5-1. Chassis..................................................................... 57

6. ELECTRICAL PARTS LIST .................................... 58

INSTRUCTION MANUAL

– 5 –

KV-AR14M50/AR14M80/AR14P52

RM-W101

The units in this manual contain a self diagnostic function. If an error occurs, the STANDBY (1) indicator will automatically

begin to flash. A description of the self-diagnosis function is explained in the instruction manual. The number of times the

STANDBY (1) indicator flashes translates to a probable source of the problem. 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 (1) indicator will flash a set number of times to indicate the possible cause of the

problem. If there is more than one error, the indicator will identify the first of the problem areas.

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

*If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is

diagnosed first by the mirco controller is displayed on the screen.

** Refer to Screen (G2) Adjustment in this manual.

SELF DIAGNOSTIC FUNCTION

Diagnosis

Item

Description

Power does

not turn on

+B overcurrent

(OCP)*

V-Protect

IK (AKB)

Power supply

NG (+5V) for

Video Processor

No. of timer

STANDBY (1)

indicator flashes

Does not light

2 times

4 times

5 times

8 times

Self-Diagnostic

display/

Diagnosis result

–

2:0

2:1 ~ 255

4:0

4:1 ~ 255

5:0

5:1 ~ 255

8:0

8:1 ~ 255

Probable Cause

Location

• Power cord is not plugged

in.

• Fuse is burned out (F600)

A board.

• H OUT (Q805) is shorted.

(A board)

• IC751 is shorted. (C board)

• +13V is not supplied.

(A board)

• IC804 is faulty. (A board)

• Video OUT (IC1545) is

faulty. (A board)

• IC001 is faulty. (A board)

• Screen (G2) is improperly

adjusted.**

• IC604 faulty.

• IC602 faulty.

Detected

Symptoms

• Power does not turn on.

• No power is supplied on

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 shorted.

• No raster is generated.

• CRT Cathode current

detection reference pulse

output is small.

• No power supply to CRT

ANODE.

• No RASTER is generated.

– 6 –

KV-AR14M50/AR14M80/AR14P52

RM-W101

STANDBY uindicator

2. DISPLAY OF STANDBY (1)INDICATOR

FLASH COUNT

3. STOPPING THE STANDBY (1)INDICATOR FLASH

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY (1)

indicator from flashing.

4. SELF-DIAGNOSTIC SCREEN DISPLAY

For errors with symptoms such as "power sometimes shuts off" or "screen sometimes goes off" that cannot be confirmed,

it is possible to bring up past occurrences of failure on the screen for confirmation.

[To Bring Up Screen Test]

In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

Display /Channel 5/Volume /Power / TV

Note that this differs from entering the service mode (volume [+]).

The following screen will be displayed indicating the error count.

Diagnostic Item Flash Count*

+B overcurrent 2 times

V-Protect 4 times

IK (AKB) 5 times

Power Supply NG (+5V) 8 times

for Video processor

* One flash count is not used for self-diagnosis.

Lamp ON 300ms

Lamp OFF 3 sec.

Lamp OFF 300ms

2 times

4 times

5 times

8 times

2 : 0

3 : N/A

4 : 0

5 : 1

8 : 0

101 : N/A

SELF DIAGNOSTIC

Numeral "0" means that no fault was detected.

Numeral "1" means the number of a fault occurrence (1 ~ 255).

–7 –

KV-AR14M50/AR14M80/AR14P52

RM-W101

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-diagnosis 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 subsequent as shown below when the

self-diagnostic screen is being displayed.

8,-

[Quitting Self-diagnostic screen]

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

6. SELF-DIAGNOSTIC CIRCUIT

[+B overcurrent $OCP%] Occurs when an overcurrent on the +B(135V) line is detected by pin 32 of IC001 (A board).

If the voltage of pin 32 of IC001 (A board) is more than 4V, the unit will automatically go

to standby.

[V-PROTECT] Occurs when an absence of the vertical deflection pulse is detected by pin 13 of IC001

(A board).

[IK $AKB%] If the RGB levels* do not balance within 15 sec after the power is turned on, this error will

be detected by IC001 (A board). TV will stay on, but there will be 5 times LED blinking.

Occurs when IC001 internal HV protect detects an abnormal H-Pulse (frequency) due to

improper power supply to IC001. TV cuts off high voltage power of anode CRT. No picture

will be detected. eg: IC602, IC604 go faulty.

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

A BOARD

IC001

Y/CHROMA JUNGLE

A BOARD

IC804

V.OUT

A BOARD

IC001

SYSTEM

A BOARD

IC003

MEMORY

FROM

C BOARD

IC751 PIN 5

EHTO

RED LED

DISPLAY

SDA1

V.GUARD

SDA

F.B-PLS 3 1384

32 122

A BOARD

FROM

Q804

COLLECTOR

POWER SUPPLY NG (+5V)

for VIDEO PROCESSOR

– 8 –

KV-AR14M50/AR14M80/AR14P52

RM-W101

2Terminal bracket

3One screws

(+BVTP 4 × 16)

1One screws

(+BVTP 3 × 12)

4FBT

bracket

A Board

SECTION 1

DISASSEMBLY

1-1. REAR COVER REMOVAL 1-2. SPEAKER REMOVAL

1-3. CHASSIS ASSY REMOVAL 1-4. SERVICE POSITION

1-5. TERMINAL BRACKET REMOVAL 1-6. A BOARD REMOVAL

2Rear cover

1Six screws

(+BVTP 4 × 16)

1Four screws

(Washer Head)

(+P4 × 16)

2Speaker Block Assy

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