Belson BSV4251 Schematic

SERVICE MANUAL (BSV-4251 BSV-4251A )

Service Manual

MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE

BSV-4251/4251A RD(1) 00 03/10/23 1/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

CONTENTS

SPECIFICATION ..………………………………………………. 4
CONTROL DESCRIPTIONS …………………………………... 7
OPTIONS EXTRAS ..……………………..…………………… 9
REMOTE CONTROL BUTTONS ………..……………………. 10
DISPLAY CELL DEFECT SPECIFICATION …………………. 12
BLOCK & WIRING DIAGRAM …………………………………14
MODULE FUNCTION & DEFINITION ……………………….. 16
MODULE BASIC CONFIGURATION …………………….……17
VSC BOARD PIN CONFIGURATION …………….………….. 18
OSD MENU (FACTORY)……………………………………….. 21
DESCRIPTION OF VSC FUNCTIONS ……………………….. 32
CIRCUIT OPERATION & WAVEFORM……………………….. 34
MODULE SUPPLY VOLTAGE SEQUENCE …………………. 41

VSC & PSU POWER SEQUENCE ……………………….….... 42

VOLTAGE & W/B ADJUSTMENT……………………………… 44
SAFETY PRECAUTIONS …………………………………………49

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BSV-4251/4251A RD(1) 00 03/10/23 2/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

(MODULE USE AND CONSIDERATIONS IN SERVICING)
TROUBLESHOOTING.…….…………………………..…………. 53
IMAGE STICKING CHARACTERISTICS ……………………… 64
ISM MODE………………………………………………………….. 66

SCHEMATIC &PRINTED CIRCUIT BOARD &EXPLODE VIEW ……… 67

EXPLODED VIEW PARTS LIST ………………………………… 69
REPLACMENT PARTS LIST …………………………………….. 71
EXPLODE VIEW …………………………………………………… 75

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BSV-4251/4251A RD(1) 00 03/10/23 3/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

SPECIFICATIONS

Note : Specification and ot hers are subject to change without notice for improvement.

● TV

1.Input Signal :

PAL

SECAM
SD,HD
VGA ~XGA

2. Tuner : PAL
SECAM

2. Input Voltage : AC 100V ~ 240V,@ 50/60Hz, 4A

3. Power Consumption : 320W

Stand-by : 5W

4. PDP Module : PDP42V51000,51300(YBT), 51330(new ASIC) - LGE

5. Speaker Impedance : 8 §Ù

6. Sound Output : 10W + 10W

7. Feature :

- AV Input (Bottom)

- Component1 Input (Bottom, DVD)

- Component2 Input (Bottom, DTV)

- D-SUB (Bottom, RGB 15 pin)

- S-Video Input (Bottom,4Pin DIN)

- SCART1 Input (Bottom, Full)

- SCART2 Input (Bottom, Half)

- Tuner (Bottom, PAL,SECAM)

- External SPK Out (Bottom, SPK Jack)

- Audio Input (Bottom,RCA Ja ck,AV,Component1/2,S-Video,RGB)

- RS-232C (9 pin) , TCP / IP Support (0~255set)

8. Function :

- ARC

- PIP (PIP Swap,Sound Swap)

- PBP (4:3,16:9)

- MTS

- TTX

9. External Interface

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BSV-4251/4251A RD(1) 00 03/10/23 4/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

1) AV / COMPONENT Output

ITEM MIN TYP MAX UNIT
AV Video Input Level 0.85 1.00 1.15 Vpp
AV Sync Input Level 0.24 0.29 0.32 Vpp
AV Burst Input Level 0.14 0.28 0.35 Vpp
AV Video Input Level 0.47 0.63 0.79 V
AV Audio Input L/R 0.47 0.63 0.79 V
Component Video Input Level

(Y,Cb/Pb,Cr/Pr)
Analog RGB, H/V Input Level 0.6 0.7 0.8 Vpp

2) COMPONENT Mode (Y,Cb/Pb,Cr/Pr)

RESOLUTION H-Freq(KHz) V-Freq(Hz) Proposed

720*480 15.73 60.00 SDTV,DVD 480I
720*576 15.63 50.00 SDTV,DVD 576I

720*480 31.47 59.94 SDTV 480P
1280*720 45.00 60.00 HDTV 720P
1280*720 44.96 59.94 HDTV 720P

1920*1080 33.75 60.00 HDTV 1080I
1920*1080 33.72 59.94 HDTV 1080I

3)SUPPORTIING DISPLAY Mode
* It is optimal screen when the resolution is 640 * 480

RESOLUTION H-Freq(KHz) V-Freq(Hz)

640*480
720*400 31.47 70

800*600

1024*768

10. RS-232C Signal

0.6 0.7 0.8 Vpp

31,47 60

37.86 72

37.50 75

35.15 56

37.88 60

48.88 72

46.88 75

48.36 60
56,48 70

60.02 75

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BSV-4251/4251A RD(1) 00 03/10/23 5/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

Pin No Pin Name S pec Pin No Pin Name Spec

1 DCD NC 6 DSR NC
2 RXD 12 Vpp 7 RTS NC
3 TXD 12 Vpp 8 CTS NC
4 DTR NC 9 R NC
5 GND GND

CONTROL DESCRIPTIONS

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SERVICE MANUAL (BSV-4251 BSV-4251A )

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BSV-4251/4251A RD(1) 00 03/10/23 7/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

OPTIONAL EXTRAS

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BSV-4251/4251A RD(1) 00 03/10/23 8/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

◐Optional extras can be changed or modified for quality improvement without notification new optional

extras can be added.

◐Contract your dealer for buying these items.

REMOTE CONTROL BUTTONS

※ When using the remote control aim it at the remote control sensor of the Monitor.

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BSV-4251/4251A RD(1) 00 03/10/23 9/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

TELETEXT FUNCTION

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BSV-4251/4251A RD(1) 00 03/10/23 10/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

DISPLAY CELL DEFECT SPECIFICATION

MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE

BSV-4251/4251A RD(1) 00 03/10/23 11/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

[ PDP42V51000,51300,51330]

DEFINITION OF CELL DEFECT ZONE

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BSV-4251/4251A RD(1) 00 03/10/23 12/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

1) Definition of Cell defect Zone

2) Display Dot Diagram

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BSV-4251/4251A RD(1) 00 03/10/23 13/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

ANALOG RGB

COMPONENT1

(DTV)

COMPONENT2

(DVD)

TUNER

CVBS

COMPOSITE

IN

HALF SCART

VIDEO IN/OUT

FULL SCART

VIDEO IN/OUT

S-VIDEO

S-VIDEO
AUDIO IN

PC

AUDIO IN

SCART_FULL

AUDIO IN

SCART_HALF

AUDIO IN

COMPOSITE

AUDIO IN

FULL SCART

RGB

DTV

AUDIO IN

DVD

AUDIO IN

TUNER

SIF

SCART_FULL

AUDIO OUT

SCART_HALF

AUDIO OUT

24LC21

EEPROM

R,G,B,H,V

Y,Pb,Pr

Y,Pb,Pr

CVBS,ID

CVBS,ID

CH,LU

SVIDEO_IN R/L

PC_IN R/L

F_SC_IN R/L

H_SC_IN R/L

AV_IN R/L

SCART RGB(R,G,B,FB)

DTV_IN R/L

DVD_IN R/L

2

2

2

2

2

2

2

2

2

2

2

F_CVBS_OUT_R/L

2

H_CVBS_OUT_R/L

5

3

CXA2089Q

MUX(U3)

A/V

(U8)

BA7657

SWITCH

4

V OUT2

Y,C OUT2

V OUT1

Y,C OUT1

MSP0 L/R

MSP1 L/R

BSV-4251 &BSV-4251A (42") PDP TV BLOCK DIAGRAM

AD9883

CONVERTER

4

BA7657

(U28)

SWITCH

(U2)
A/D

TTX RGB

(R,G,B,FB)

4

2
2

20.25MHz

VPC3230D-C5

VIDEO

DECODER

H_SCART_OUT

20.25MHz

VPC3230D-C5

VIDEO

DECODER

(MAIN)

6.000MHz

SDA5550

(U26)

TTX

18.432MHz

(U45)

MSP3453

AUDIO

PROCESSOR

(U39)

(SUB)

(U41)

24

TTX_CVBS

MSP_OUT1

L/R

CH1 RGB

CH1 GB

CH2 GB

SST39VF080AT

FLASH

HY62U8200

RAM

24LC16

EEPROM

SPK

16

R

TDA7495S

AUDIO AMP

SPK

L

5

3

2

4

2

24

16

20.000MHz

(U21)

PW565

DS232AS

RS232

TRANSMITTER

RS232

DSUB-9P

VCC12

12

V

I/O EXTENDER

VCC5

AP1501-50

12V 12V 12V 12V

80.000MHz

KYE
PAD

RC1117

VCC3

DE [23:0]

DO [23:0]

FSDQM[7:0]

FSDATA[63:0]

H SYNC

V SYNC

DEN

DCLK

ADR[12:0]

A[21:0]

D[7:0]

REMOCON

VCC5A

AP1501-50

24

TRANSMITTER

POWER

MODULE

SIL164

TMDS

K4S643232E X 2

SDRAM

TM28F800B3

FLASH

MOMORY

24LC256

EEPROM

VCC5D

AP1501-50

TX0 +

TX0 -

TX0+

TX1 +

TX1 -

TX2 +

TX2 -

TXC +

TXC -

VCC9

KIA7809

MODULE

42"

5VST

5V

FAN

12V

MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE

BSV-4251/4251A RD(1) 00 03/10/23 14/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE

BSV-4251/4251A RD(1) 00 03/10/23 15/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

MODULE FUNCTION & DEFINITION

1. The function of each part

Part name Main function
Y-Board (Scan Driver) Execution of the scan and sustain operation connecting scan electrode (Y-electrode) and FPC of panel
Z-Board (Common Sustain Driver) Execution of the sustain operation connecting sustain electrode (Z-electrode) and FPC of panel

X-Board (Address Driver) Execution of the address operation connecting the botton plate address electrode (X-electrode) and FPC of panel
Control Board Distribution to X, Y, Z board after creation of display data and driver timing for an image and sound signal to be input from outside

DC/DC-2 Board Distribution to X, Y, Z board after conversion from input voltage of Vs, Va, Voc to circuit logic voltage (5V)
FPC (Flexible Plate Circuit) The pattern connection of PCB and panel

COF (Chip On Film) It means to integrate a kind of IC Chip with FPC

2. A term and definition of defect

2.1 CELL DEFECT

Term The actual state A cause

Non lighting Cell Defect Cell is always “Off” ¢º a different thing or structural defect of Cell
Flashing Cell Defect Cell repeat On / Off ¢º a different thing or structural defect of Cell

Non-extinguishing Cell Defect Cell is always “On” ¢º a different thing or structural defect of Cell
High Intensity Cell Defect A cell is the brighter than others on same color ¢º a different thing or structural defect of Cell

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BSV-4251/4251A RD(1) 00 03/10/23 16/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

MODULE BASIC CONFIGURATION

[PDP42V51000,51300,51330]

MODEL NAME DOCUMENT NO REVISION NO REVISION DATE PAGE

BSV-4251/4251A RD(1) 00 03/10/23 17/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

VSC BOARD PIN CONFIGURATION

Pin No I/O Specification Description

1 ( 5V ) I 5V VSC 5V Input
2 ( 5V ) I 5V VSC 5V Input
3 ( 5V ) I 5V VSC 5V Input
4 ( GND ) GND 5V Ground
5 ( GND ) GND 5V Ground

J7

6 ( GND ) GND 5V Ground
7 ( 12V ) I 12V VSC 12V Input
8 ( 12V ) I 12V VSC 12V Input
9 ( GND ) GND 12V Ground
10 ( GND ) GND 12V Ground
11 ( 12V ) I 12V FAN 12V
12 ( GND ) GND FAN 12V Ground

AC POWER DETECT PORT

J6

P2

: AC INPUT DETECTING.
: AC POWER ON  High ,

1 ( AC-DET ) I 5V / 0V

3 ( 5V STBY ) I 5V 5V INPUT PORT FOR VSC STANDBY
2 ( RL-ON ) O 5V / 0V

6 ( 5V-MNT ) I 5V / 0V

4 ( GND )

5 (VAVS-ON ) O 5V / 0V

7 ( NC ) No Connection
1 ( REMOCON ) I 5V Monitor transmitter signal input port
2 ( GND )
3 ( 5VST ) O 5V Stand by 5V Output Port
4 ( GND )

5 (LED-R ) O 5V / 0V

6 (LED-G ) O 5V / 0V

AC POWER OFF  LOW

:Turn off the power by power sequence to

stabilize PDP MODULE in case of power
breakdown.

RELAY CONTROL PORT FOR POWER ON

: Relay On  High , Relay off  Low

PDP MODULE STABLE CHECK PORT.

: The port to provide control signal to PDP
MODULE after the controller stabilized. At the
moment, MICOM always check this signal and
turn off the power when the signal is low.

PORT FOR VA/VS OF PDP MODULE.

: ON  HIGH , OFF LOW

:To protect PDP MODULE, Micom turn on the

Va/Vs 2 seconds after checking 5V-MNT.

RED LED CONTORL OUTPUT PORT

: High : Red LED On
GREEN LED CONTORL OUTPUT PORT
: High : Green LED On

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BSV-4251/4251A RD(1) 00 03/10/23 18/75

J9

J10

J11

J1

SERVICE MANUAL (BSV-4251 BSV-4251A )

7 ( POWER ) I 5V / 0V LOCAL KEY INPUT PORT FOR POWER
8 ( VOL+ ) I 5V / 0V LOCAL KEY INPUT PORT FOR VOL +
9 ( VOL- ) I 5V / 0V LOCAL KEY INPUT PORT FOR VOL ­10 ( SRC/SEL ) I 5V / 0V LOCAL KEY INPUT PORT FOR SOURCE
11 (MENU) I 5V / 0V LOCAL KEY INPUT PORT FOR MENU
12 (CH-) I 5V / 0V LOCAL KEY INPUT PORT FOR CH­13 (CH+) I 5V / 0V LOCAL KEY INPUT PORT FOR CH+
1 ( 32V ) I 32V Audio AMP POWER INPUT PORT
2 ( 32V ) I 32V Audio AMP POWER INPUT PORT
3 ( GND ) 0V Audio AMP POWER GROUND PORT
4 ( GND ) 0V Audio AMP POWER GROUND PORT
1 ( L OUT ) O
2 ( L GND ) Audio AMP LEFT GROUND PORT
3 ( R OUT ) O
4 ( R GND ) Audio AMP RIGHT GROUND PORT
1 ( S-SCL ) RS-232C CLOCK LINE
2 ( S-SDA ) RS-232C DATA LINE
3 ( FS )
4 ( GND ) 0V
1 ( VCC5 ) I 5V 5V Input
2 ( VCC5 ) I 5V 5V Input
3 (SCART_R) I
4 (SCART_G) I
5 (SCART_B) I
6 (SCART_FB) I +1V to +3V / 0V to 0.4V SCART FAST BLANKING
7 ( GND ) 0V
8 (FSCART_CVBS_IN)
9 ( GND )) 0V
10 (HSCART_CVBS_IN)
11 ( GND ) 0V
12 ( FSCART_ID )
13 ( HSCART_ID )
14 ( GND ) 0V
15 (F_CVBS_OUT)
16 ( GND ) 0V
17 (H_CVBS_OUT)
18 ( GND ) 0V
19 (F_CVBS_L_OUT)
20 (F_CVBS_R_OUT)
21 ( GND ) 0V
22 (H_CVBS_L_OUT)
23 (H_CVBS_R_OUT)

I

I

I 4:3 / 16:9 VIDEO STATUS

I 4:3 / 16:9 VIDEO STATUS

O

O

O
O

O
O

0.7Vpp±0.1pp

0.7Vpp±0.1pp

0.7Vpp±0.1pp

1.0Vpp±3dB

1.0Vpp±3dB

1.0Vpp±3dB

1.0Vpp±3dB

0.5Vrms±3dB

0.5Vrms±3dB

0.5Vrms±3dB

0.5Vrms±3dB

Audio AMP LEFT OUTPUT PORT( 8 §Ù )

Audio AMP RIGHT OUTPUT PORT ( 8 §Ù )

SCART RED INPUT PORT
SCART GREEN INPUT PORT
SCART BLUE INPUT PORT

SCART1 CVBS INPUT PORT

SCART2 CVBS INPUT PORT

SCART1 CVBS OUTPUT PORT

SCART2 CVBS OUTPUT PORT

SCART1 AUDIO LEFT OUTPUT PORT
SCART1 AUDIO RIGHT OUTPUT PORT

SCART2 AUDIO LEFT OUTPUT PORT
SCART2 AUDIO RIGHT OUTPUT PORT

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BSV-4251/4251A RD(1) 00 03/10/23 19/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

24 ( GND ) 0V
1 ( VCC5) I 5V 5V INPUT
2 ( F_SC_L_IN ) I
3 ( F_SC_R_IN ) I
4 ( GND ) 0V
5 ( H_ SC_L_IN ) I
6 ( H_SC_R_IN ) I
7 ( GND ) 0V
8 ( AFT ) I
9 ( GND ) 0V
10 ( TUNER_SIF )
11 ( GND ) 0V
12 (TUNER_CVBS)

J2

13 ( GND ) 0V
14 ( SDA3 ) I 5V / 0V DATA LINE
15 ( SCL3 ) I 5V / 0V CLOCK LINE
16 ( GND ) 0V
17 ( VCC12 ) I 12V 12V INPUT
18 ( VCC12 ) I 12V 12V INPUT
19 ( GND ) 0V
20 ( VCC5A ) I 5V 5V INPUT
21 (VCC5A ) I 5V 5V INPUT
22 ( GND ) 0V
23 ( GND ) 0V
24 ( GND ) 0V

I

I

0.5Vrms±3dB

0.5Vrms±3dB

0.5Vrms±3dB

0.5Vrms±3dB

1.0Vpp±3dB

SCART1 AUDIO LEFT OUTPUT PORT
SCART1 AUDIO RIGHT OUTPUT PORT

SCART2 AUDIO LEFT OUTPUT PORT
SCART2 AUDIO RIGHT OUTPUT PORT

TV VIDEO INPUT PORT

OSD MENU(FACTORY)

■ FACTORY MODE

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BSV-4251/4251A RD(1) 00 03/10/23 20/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

FACTORY MODE

„ 1. Calibration

: Automatic adjustment of white balance for Analogue input (PC) and Component2 (DTV)

input.
„ 2. Option Table 0002
: Initial installation of OSD.

„ 3. Color control

: Adjustment of contrast and brightness for scaler generating power.

„ 4. PW565

: Adjustment of contrast and brightness for scaler input port (CH1 or CH2).
„ 5. VPC3230-MAIN
: Value adjustment for video decoder¡¯s brightness and contrast, color tickness in

the main window.

„ 6. VPC3230-SUB

: Value adjustment for video decoder¡¯s brightness and contrast, color tickness in

the sub window.

„ 7. ADC

: Value adjustment for brightness and contrat, color thickness of analogue RGB,

Y,Pb,Pr of AD9883 A/D convertor.

„ 8. Heatrun

: The mode when you do aging.
„ 9. Version
: It shows the information of Firmware version and Panel.
„ 10. Setup
: Installation of TTX language and video, protocol, logo.

󰼿

CALIBRATION MENU

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BSV-4251/4251A RD(1) 00 03/10/23 21/75

SERVICE MANUAL (BSV-4251 BSV-4251A )

CALIBRATION MENU

„ 1. PC Calibration
: Automatic adjustment as the fittest status of white balance for analogue input (PC)
„ 2. DTV Calibration

: Automatic adjustment as the fittest status of white balance for component2 (DTV)

input.

󰼿

󰼿

OPTION TABLE MENU

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BSV-4251/4251A RD(1) 00 03/10/23 22/75

OPTION TABLE MENU

„ Flesh tone 󰼿

󰼿

„ LNA(Low Noise Amplifier)

: On/Off Installation of screen quality improv ement fuction, when TV input signal is

weak.

„ Blue Screen

: When there are no input signal of the TV and external equipment, you can install the

screen color as blue.

„ Melody Volume

: Installation of the melody volume for initial soft power On/Off. The volume is ex­factoried as ¡°0 ¡± due to license.

„ Video Mute

„ TTX TOP

„ Auto FM

„ Help

„ Area

„ High Deviation

SERVICE MANUAL (BSV-4251 BSV-4251A ) SERVICE MANUAL (BSV-4251 BSV-4251A )

󰼿

COLOR CONTROL MENU

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