SONY KVPF51P40 - Service Manual Immediate Download

KV-PF21DK7

RM-952

SCC-U30G-A

KV-PF21M70

RM-952

SCC-U13E-A

KV-PF21N70

RM-915

Taiwan

SCC-P13F-A

KV-PF21P70

RM-952

SCC-U13F-A

KV-PF21Q40

RM-952

SCC-U12P-A

KV-PF21Q70

RM-952

SCC-U13H-A

KV-PF51P40

RM-952

Indonesia

SCC-U20N-A

MODEL

COMMANDER DEST. CHASSIS NO.

CHASSIS

TRINITRON ® COLOR TV

SERVICE MANUAL

BG-3S

MODEL

COMMANDER DEST.

CHASSIS NO.

RM-915

RM-952

KV-PF21N70/PF51P40/PF21P70/PF21Q40

RM-915

RM-952

KV-PF21Q70/PF21M70/PF21DK7

RM-952

SPECIFICATIONS

(except KV-PF21N70)

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.

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. CIRCUIT ADJUSTMENTS THAT ARE

CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS

MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL

COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS

SUSPECTED.

Note

Power requirements

110-240 V AC, 50/60 Hz

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

Television system

B/G, I, D/K, M

KV-PF21M70

B/G, D/K

KV-PF21DK7

B/G

KV-PF21P70/PF21Q70

KV-PF21Q40/PF21P40

Color system

PAL, PAL60, SECAM, NTSC4.43, NTSC3.58

KV-PF21M70

PAL, PAL60, NTSC4.43, NTSC3.58 (AV IN)

KV-PF21P70/PF21P40

PAL, PAL60, SECAM, NTSC4.43

KV-PF21Q70/PF21Q40

KV-PF21DK7

Channel coverage

B/G

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

CATV : S01 to S03, S1 to S41

UHF : B21 to B68/ CATV : S01 to S03, S1 to S41

KV-PF21M70 only

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

KV-PF21M70/PF21DK7

VHF : A2 to A3/ UHF : A14 to A79/

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

KV-PF21M70 only

(Antenna)

75-ohm external terinal

Audio output

Number of terminal

(Video)

Input : 2

Output : 1

Phono jacks; 1 Vp-p, 75 ohms

(Audio)

Input : 2

Output : 1

Phono jacks; 500 mVrms

(Earphone)

Output : 1

Minijack

Picture tube

21 inch

Tube size (cm)

Measured diagonally

Screen size (cm)

Measured diagonally

Dimension (w/h/d, mm)

490 x 458 x 487

Mass (kg)

Design and specifications are subject to change without notice.

KV-PF21N70/PF51P40/PF21P70/PF21Q40

RM-915

RM-952

KV-PF21Q70/PF21M70/PF21DK7

RM-952

SPECIFICATIONS

(KV-PF21N70 only)

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.

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. CIRCUIT ADJUSTMENTS THAT ARE

CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS

MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL

COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS

SUSPECTED.

Note

Power requirements

110V AC, 50/60 Hz

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

Television system

Color system

PAL, PAL60, NTSC4.43, NTSC3.58 (AV IN)

Channel coverage

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

CATV : A-8 to A-1, A-W, W+1 to W+84

(Antenna)

75-ohm external terinal

Audio output

Number of terminal

(Video)

Input : 2

Output : 1

Phono jacks; 1 Vp-p, 75 ohms

(Audio)

Input : 2

Output : 1

Phono jacks; 500 mVrms

(Earphone)

Output : 1

Minijack

Picture tube

21 inch

Tube size (cm)

Measured diagonally

Screen size (cm)

Measured diagonally

Dimension (w/h/d, mm)

490 x 458 x 487

Mass (kg)

Design and specifications are subject to change without notice.

KV-PF21N70/PF51P40/PF21P70/PF21Q40

RM-915

RM-952

KV-PF21Q70/PF21M70/PF21DK7

RM-952

TABLE OF CONTENTS

Section

Title

Page

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

1. GENERAL .......................................................... 9

2. DISASSEMBLY

2-1.

Rear Cover Removal ................................................ 35

2-2.

Chassis Assy Removal ............................................. 35

2-3.

F Bracket Removal .................................................. 35

2-4.

Service Position ....................................................... 35

2-5.

Replacement of Parts ............................................... 36

2-5-1.

Replacement of Control Button .......................

2-5-2.

Replacement of Bar Control ............................

2-6.

Terminal Bracket Removal ...................................... 36

2-7.

Degauss Coil Removal ............................................ 36

2-8.

Picture Tube Removal .............................................. 37

3. SET-UP ADJUSTMENTS

3-1.

Beam Landing .......................................................... 38

3-2.

Convergence ............................................................. 39

3-3.

Focus Adjustment .................................................... 41

3-4.

G2 (Screen) and White Balance Adjustments ......... 41

4. CIRCUIT ADJUSTMENTS

4-1.

Adjustments with Commander ................................ 42

4-2.

Adjustment Method ................................................. 43

4-3.

Picture Quality Adjustments .................................... 48

4-4.

A Board Adjustment After IC003 (Memory)

Replacement ............................................................. 48

4-5.

Picture Distortion Adjustment ................................. 49

Section

Title

Page

5. DIAGRAMS

5-1

Block Diagram ......................................................... 51

5-2

Frame Schematic Diagram ...................................... 54

5-3

Circuit Boards Location .......................................... 56

5-4

Schematic Diagrams and Printed Wiring Boards ... 57

(1)

Schematic Diagram of A(1/2) Board ...................... 59

(2)

Scheamtic Diagram of A(2/2) Board ...................... 63

(3)

Schematic Diagrams of C3 and F Boards ............... 71

5-5

Semicondutors ......................................................... 75

6. EXPLODED VIEW

6-1.

Chassis ..................................................................... 77

7. ELECTRICAL PARTS LIST ................................... 79

KV-PF21N70/PF51P40/PF21P70/PF21Q40

RM-915

RM-952

KV-PF21Q70/PF21M70/PF21DK7

RM-952

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.

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)

· -13V is not supplied.

(A board)

· IC 503 faulty (A board)

· IC 301 faulty (A board)

· G2 is improperly adjusted.

(Note 2)

· CRT problem.

· IC301 is faulty. (A board)

· No connection A board to

C3 board.

· Discharge CRT

(C3 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