SONY BX3 H Service Manual

SERVICE MANUAL

BX1S

CHASSIS

MODEL COMMANDER DEST. CHASSIS NO.

KV-BT21M50 KV-BT21M80 KV-BT21M81

RM-W101 GE SCC-V04A-A

RM-W101 ME SCC-U90M-A

RM-W100 ME SCC-U90J-A

MODEL COMMANDER DEST. CHASSIS NO.

RM-W100RM-W101

TRINITRON

COLOR TV

KV-BT21M50/BT21M80/BT21M81

RM-W101 RM-W100

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

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

Teletext language English, Farsi (Persian) KV-BT21M81 only

Channel coverage

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

CATV: S01 to S03, S1 to S41

I UHF: 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

M VHF: 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

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

≥ Audio Input: 2 Output: 1 Phono jacks; 500 mVrms 2 (Headphone) Output: 1 Stereo minijack

Picture tube 21 in.

Tube size (cm) 54 Measured diagonally

Screen size (cm) 51 Measured diagonally

Dimension (w/h/d, mm) 497 x 461 x 487

Mass (kg) 23

SPECIFICATIONS

Note

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.

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4-1. BLOCK DIAGRAM

VIF&SIF SAW

MAIN

Power

Supply

FSS TUNER

AGCin

12C

Video

L(Mono)

Video

L(Mono)

CV/YC

L(Mono)

CV/YC

L(Mono)

CV/YC

L(Mono)

G/Y

B/P

R/P

Fbl(RGBin)

24.576MHz

DVD/RGB

AV2

AV3

AV1

Mon Out

Audio Amp

out

Mon

out

AV1

AV2

AV3

RGB/

DVD

5V 30V

24-5.VIF1~2

115. DGC Relay

STBY

3.3V

AC in ~

110-220V

CISPR/

PFC

3.3V

RESET

3.3V 5V 8V

3.3/5V

Relay

8V AUDIO VCC

DGC

+/-15V

Hout

FBT

1/2ch

Audio Amp

AT T

VAR

NVM

Pin out H-drive

H-out

Rot. cct

V-out

RGB Amp

feedback

Mono

L,R

mute

EHT, ABL

EW, Hd

V+, V-

RGB

On/Off

stdby

Device 12C

12C

SIRCS

Key buttons

PLL

I/O Port

VIF & SIF POWER

Color

Decoder

YUV

Processor

Jungle

RGB

FM MONO Dem

Volume control

ONE CHIP

Micro

Te xt

CC & V-chip

11.XTALOUT

10.XTALIN

74~76.YUVout

70-72.YUVin

119. KEY IN

126.INT2

98, 99. SCL1, SDA1

108, 109. SCL0, SDA0

102. BINT

122~3. RED/GREEN LED

77.SCARTFBL

78~80.RGB3 34DIRIN

R-Y/R,Y/G, B-Y/B IN

31.AGCout

43.IFVO/IFMON-OUT

62.SCARTHPL

48.MON-OUT

36.OutL

85~87

RGBout

84.lk

65.VM

23. VD+

22. VD-

112.ROT CTRL

113. ROT SW

21.EWD

67.Hout

66.AFC

32.EHTO

83.ABL

60.LSL

106. AUDIO MUTE

105. AUDIO STDBY

58.CVBS1/Y1

59.C3

56.InL1

55.CVBS3

53.InL3

I/O Port

51.CVBS2/Y2

52.C2

49.InL2

B-INT

LED

+B line

30V

– 31 –

DIAGRAMS

SECTION 4

KV-BT21M50/BT21M80/BT21M81

RM-W101 RM-W100

KV-BT21M50/BT21M80/BT21M81

RM-W101 RM-W100

4-2. CIRCUIT BOARDS LOCATION

A Board

4-3. SCHEMATIC DIAGRAM

Note:

• All capacitors are in µF unless otherwise noted.

• All electrolytic capacitors are rated at 50V unless otherwise

noted.

• All resistors are in ohms. kΩ = 1000Ω, MΩ = 1000kΩ

• Indication of resistance which does not have rating electrical power is as follows.

Pitch: 5 mm Rating electrical power 1/4W (CHIP: 1/10W)

• : nonflammable resistor.

• : fusible resistor.

• ¢ : internal component.

• : panel designation or adjustment for repair.

• All variable and adjustable resistors have characteristic

curve B unless otherwise noted.

• Readings are taken with a color-bar signal input. no mark : Common ( ) : PAL [ ] : NTSC 3.58

• Readings are taken with a 10 MΩ digital multimeter.

• Voltage are dc with respect to ground unless otherwise noted.

• Voltage variations may be noted due to normal production tolerances.

• All voltage are in Volt.

• ✽ : Cannot be measured.

• Circled numbers are waveform references.

• : B +bus.

• : B –bus.

• k : signal path.

Note: The reference number which starts with Wxxx

(eg: W003) indicates a wire to wire connection.

Note: Components marked as XX are not fitted on this

model.

C Board

Reference information

RESISTOR : RN METAL FILM

: RC SOLID : FPRD NONFLAMMABLE CARBON : FUSE NONFLAMMABLE FUSIBLE : RS NONFLAMMABLE METAL

OXIDE : RB NONFLAMMABLE CEMENT : RW NONFLAMMABLE

WIREWOUND : ✽ ADJUSTMENT RESISTOR

COIL : LF-8L MICRO INDUCTOR CAPACITOR : TA TANTALUM

: PS STYROL : PP POLYPROPYLENE : PT MYLAR : MPS METALIZED POLYESTER : MPP METALIZED POLYPROPYLENE : ALB BIPOLAR : ALT HIGH TEMPERATURE : ALR HIGH RIPPLE

Note: The component identified by shading and

mark ! are critical for safety. Replace only with part number specified.

Note: “A” board schematic diagram is divided into 6 blocks.

Each block is named by its function and block “alphabet”. eg: Processor (Block A) Joint connection between boards can be identified using the block alphabet followed by sequence numbering. eg: -<HOUT-DEFL (A10) To D11 Meaning: Block A joint A10 is connected to Block D joint D11

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