Belson BSV-4251 User manual

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NO REVISION DATEPAGE
Service Manual
BSV-4251/4251A RD(1) 00 03/10/23 1/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
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
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
BSV-4251/4251A RD(1) 00 03/10/23 3/75
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
SPECIFICATIONS
Note : Specification and others 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(newASIC) - 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 Jack,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
BSV-4251/4251A RD(1) 00 03/10/23 4/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
1)AV/COMPONENTOutput
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) 0.6 0.7 0.8 Vpp
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)
31,47 60
37.86 72
640*480 37.50 75
720*400 31.47 70
35.15 56
37.88 60
48.88 72
800*600
46.88 75
48.36 60
56,48 70
1024*768 60.02 75
10. RS-232C Signal
BSV-4251/4251A RD(1) 00 03/10/23 5/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
Pin No Pin Name Spec 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
BSV-4251/4251A RD(1) 00 03/10/23 6/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
BSV-4251/4251A RD(1) 00 03/10/23 7/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
OPTIONAL EXTRAS
BSV-4251/4251A RD(1) 00 03/10/23 8/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
◐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.
BSV-4251/4251A RD(1) 00 03/10/23 9/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
TELETEXT FUNCTION
BSV-4251/4251A RD(1) 00 03/10/23 10/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
DISPLAY CELL DEFECT SPECIFICATION
BSV-4251/4251A RD(1) 00 03/10/23 11/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
[PDP42V51000,51300,51330]
DEFINITION OF CELL DEFECT ZONE
BSV-4251/4251A RD(1) 00 03/10/23 12/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
1) Definition of Cell defect Zone
2) Display Dot Diagram
BSV-4251/4251A RD(1) 00 03/10/23 13/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
(U21)
PW565
REMOCON
20.000MHz
ANALOG RGB
(U2)
AD9883
A/D
CONVERTER
(U39)
VPC3230D-C5
VIDEO
DECODER
(SUB)
COMPONENT1
(DTV)
COMPONENT2
(DVD)
HALF SCART
VIDEO IN/OUT
S-VIDEO
(U8)
BA7657
SWITCH
CXA2089Q
A/V
MUX(U3)
KYE
PAD
TDA7495S
AUDIO AMP
SPK
R
SPK
L
ADR[12:0]
DS232AS
RS232
TRANSMITTER
RS232
DSUB-9P
24LC21
EEPROM
POWER
MODULE
12
V
5V
KIA7809
5VST
20.25MHz
18.432MHz
(U41)
VPC3230D-C5
VIDEO
DECODER
(MAIN)
20.25MHz
CH1RGB
K4S643232E X 2
SDRAM
AP1501-50
VCC5
BA7657
(U28)
SWITCH
TUNER
CVBS
COMPOSITE
IN
FULL SCART
VIDEO IN/OUT
FULL SCART
RGB
SCART RGB(R,G,B,FB)
Y,Pb,Pr
SDA5550
(U26)
TTX
TTXRGB
(R,G,B,FB)
S-VIDEO
AUDIO IN
PC
AUDIO IN
(U45)
MSP3453
AUDIO
PROCESSOR
6.000MHz
24
CH1GB
16
16
CH2GB
80.000MHz
FSDQM[7:0]
FSDATA[63:0]
A[21:0]
D[7:0]
I/O EXTENDER
SST39VF080AT
FLASH
HY62U8200
RAM
24LC16
EEPROM
VCC12
AP1501-50
VCC5A
AP1501-50
VCC5D
VCC9
RC1117
VCC3
12V 12V 12V 12V
Y,Pb,Pr
R,G,B,H,V5
3
5
3
H_SCART_OUT
V OUT2
V OUT1
MSP0L/R
SVIDEO_INR/L
PC_INR/L
DTV_INR/L
AV_INR/L
4
4
4
CVBS,ID
CVBS,ID
F_SC_INR/L
H_SC_INR/L
F_CVBS_OUT_R/L
H_CVBS_OUT_R/L
2
2
2
2
CH,LU
2
Y,C OUT2
Y,C OUT1
2
2
MSP1L/R
2
2
DTV
AUDIO IN
DVD
AUDIO IN
SCART_FULL
AUDIO IN
SCART_HALF
AUDIO IN
COMPOSITE
AUDIO IN
2
2
2
2
2
TUNER
SIF
SCART_FULL
AUDIO OUT
SCART_HALF
AUDIO OUT
2
2
DVD_INR/L
MSP_OUT1
L/R
4
24
12V
FAN
TM28F800B3
FLASH
MOMORY
24LC256
EEPROM
TTX_CVBS
SIL164
TMDS
TRANSMITTER
DE[23:0] 24
H SYNC
V SYNC
DEN
DCLK
TX0+
TX0+
TX1+
TX1-
TX2+
TX2-
TXC+
TXC-
TX0-
DO[23:0]
MODULE
42"
BSV-4251 &BSV-4251A (42")PDP TVBLOCK DIAGRAM
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
BSV-4251/4251A RD(1) 00 03/10/23 14/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
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 Mainfunction
Y-Board(Scan Driver) Execution ofthe scan and sustain operation connectingscan electrode (Y-electrode) and FPC of panel
Z-Board(Common SustainDriver) Execution of thesustain operationconnecting sustainelectrode (Z-electrode)and FPC of panel
X-Board (Address Driver)Executionof the address operationconnectingthe bottonplate address electrode (X-electrode)and FPC of panel
Control Board Distribution to X, Y, Z board after creation of display data anddriver timingfor animage andsound signal to beinput from outside
DC/DC-2 BoardDistributionto X, Y, Z board after conversionfrom input voltage of Vs, Va, Voc to circuit logic voltage (5V)
FPC (Flexible Plate Circuit)The patternconnectionof PCB and panel
COF (Chip OnFilm) It means to integrate a kindof IC Chip with FPC
2. A term and definition of defect
2.1 CELL DEFECT
Term The actual stateA cause
Non lighting Cell Defect Cell is always“Off”¢º a differentthing or structural defect of Cell
Flashing Cell Defect Cell repeat On / Off ¢º a differentthing orstructural defect of Cell
Non-extinguishing Cell Defect Cell is always“On”¢º a differentthing or structural defect of Cell
High Intensity Cell Defect A cell is the brighter than others onsame color ¢º a differentthing or structural defect of Cell
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
BSV-4251/4251A RD(1) 00 03/10/23 16/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
MODULE BASIC CONFIGURATION
[PDP42V51000,51300,51330]
BSV-4251/4251A RD(1) 00 03/10/23 17/75

SERVICE MANUAL (BSV-4251 BSV-4251A )
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
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
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
J7
12 ( GND ) GND FAN 12V Ground
1 ( AC-DET ) I 5V / 0V
AC POWER DETECT PORT
: AC INPUT DETECTING.
: AC POWER ON High ,
AC POWER OFF LOW
:Turn off the power by power sequence to
stabilize PDP MODULE in case of power
breakdown.
3 ( 5V STBY ) I 5V 5V INPUT PORT FOR VSC STANDBY
2 ( RL-ON ) O 5V / 0V RELAY CONTROL PORT FOR POWER ON
: Relay On High , Relay off Low
6 ( 5V-MNT ) I 5V / 0V
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.
4 ( GND )
5 (VAVS-ON ) O 5V / 0V
PORT FOR VA/VS OF PDP MODULE.
: ON HIGH , OFFLOW
:To protect PDP MODULE, Micom turn on the
Va/Vs 2 seconds after checking 5V-MNT.
J6
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 RED LED CONTORL OUTPUT PORT
: High : Red LED On
P2
6 (LED-G ) O 5V / 0V GREEN LED CONTORL OUTPUT PORT
: High : Green LED On
BSV-4251/4251A RD(1) 00 03/10/23 18/75

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 CH-
13 (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
J9
4 ( GND ) 0V Audio AMP POWER GROUND PORT
1 ( L OUT ) O Audio AMPLEFT OUTPUT PORT( 8 §Ù )
2 ( L GND ) Audio AMP LEFT GROUND PORT
3 ( R OUT ) O Audio AMPRIGHT OUTPUT PORT ( 8§Ù )
J10
4 ( R GND ) Audio AMP RIGHT GROUND PORT
1 ( S-SCL ) RS-232C CLOCK LINE
2 ( S-SDA ) RS-232C DATA LINE
3 ( FS )
J11
4 ( GND ) 0V
1 ( VCC5 ) I 5V 5V Input
2 ( VCC5 ) I 5V 5V Input
3 (SCART_R) I 0.7Vpp±0.1pp SCART RED INPUT PORT
4 (SCART_G) I 0.7Vpp±0.1pp SCART GREEN INPUT PORT
5 (SCART_B) I 0.7Vpp±0.1pp SCART BLUE INPUT PORT
6 (SCART_FB) I +1V to +3V / 0V to 0.4V SCART FAST BLANKING
7 ( GND ) 0V
8 (FSCART_CVBS_IN)
I 1.0Vpp±3dB SCART1 CVBS INPUT PORT
9 ( GND ))0V
10 (HSCART_CVBS_IN)
I 1.0Vpp±3dB SCART2 CVBS INPUT PORT
11 ( GND ) 0V
12 ( FSCART_ID )
I 4:3 / 16:9 VIDEO STATUS
13 ( HSCART_ID )
I 4:3 / 16:9 VIDEO STATUS
14 ( GND ) 0V
15 (F_CVBS_OUT)
O 1.0Vpp±3dB SCART1 CVBS OUTPUT PORT
16 ( GND ) 0V
17 (H_CVBS_OUT)
O 1.0Vpp±3dB SCART2 CVBS OUTPUT PORT
18 ( GND ) 0V
19 (F_CVBS_L_OUT)
O 0.5Vrms±3dB SCART1 AUDIO LEFT OUTPUT PORT
20 (F_CVBS_R_OUT)
O 0.5Vrms±3dB SCART1 AUDIO RIGHT OUTPUT PORT
21 ( GND ) 0V
22 (H_CVBS_L_OUT)
O 0.5Vrms±3dB SCART2 AUDIO LEFT OUTPUT PORT
J1
23 (H_CVBS_R_OUT)
O 0.5Vrms±3dB SCART2 AUDIO RIGHT OUTPUT PORT
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
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 0.5Vrms±3dB SCART1 AUDIO LEFT OUTPUT PORT
3 ( F_SC_R_IN ) I 0.5Vrms±3dB SCART1 AUDIO RIGHT OUTPUT PORT
4 ( GND ) 0V
5 ( H_ SC_L_IN ) I 0.5Vrms±3dB SCART2 AUDIO LEFT OUTPUT PORT
6 ( H_SC_R_IN ) I 0.5Vrms±3dB SCART2 AUDIO RIGHT OUTPUT PORT
7 ( GND ) 0V
8 ( AFT ) I
9 ( GND ) 0V
10 ( TUNER_SIF )
I
11 ( GND ) 0V
12 (TUNER_CVBS)
I 1.0Vpp±3dB TV VIDEO INPUT PORT
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
J2
24 ( GND ) 0V
OSD MENU(FACTORY)
■FACTORY MODE
MODEL NAMEDOCUMENT NOREVISION NOREVISION DATEPAGE
BSV-4251/4251A RD(1) 00 03/10/23 20/75
This manual suits for next models
1
Table of contents