BBK LT1504S Service Manual
  1. Manuals
  2. Brands
  3. BBK Manuals
  4. TV
  5. LT1504S
  6. Service manual

BBK LT1504S Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
LT1504S
Service Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LT1504S and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for BBK LT1504S

Summary of Contents for BBK LT1504S

  • Page 1 LT1504S Service Manual...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. Precautions and Safety Notices ································· 1 2. S p e c i f i c a t i o n · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 2 3.

  • Page 3: Precautions And Safety Notices

    1. Precautions and Safety Notices Prior to using this service manual,please ensure that you have carefully followed all the procedures outlined in the user's manual for this product. (1) Read all of these instructions. (2) Save these instructions. (3) Follow all warnings and instructions a marked on the product. (4) Unplug this product from the wall outlet before cleaning.Do not use liquid cleaners or aerosol cleaners, use a damp cloth for cleaning.

  • Page 4: Specification

    2. Specification 15” panel specification: Item Specifications Display pixels 1024 (H) x768 (V) pixels ( 1 pixel = 1 RGB cells ) Active Area 304.128mm (H) x 228.096mm (V) Pixel Pitch 0.297mm (H) x 0.297mm (V) Display Colors 16.2M Pixel Arrangement R+G+B vertical stripe Display Mode Normally white...
  • Page 5 S-VIDEO S-VIDEO+ L/R Audio Y/C Mini Din 4 Pin VIDEO2 (S-VIDEO) SCART RGB+Y/C+ CVBS(input/output)+ SCART 21pin VIDEO3(SCART IN) L/R(input/output) YPbPr Component 480i, 576i, 480p, RCAx3+RCAx2 VIDEO4 (YPbPr) (Y, Pb/Cb, Pr/Cr) 576p, 720p, 1080i (Red, White) + L/R Audio VGA IN+ PC AUDIO PC/VGA Analog RGB VGA 15 Pin...
  • Page 6 VGA type connector pin assignment 1.Red Video 6.Red Ground 11.ISP-SEL-I 2.Green Video 7.Green Ground 12.SDA 3.Blue Video 8.Blue Ground 13.H-sync. 4.None 9.+5V 14.V-sync. 5.GND 10.Sync GND 15.SCL C.RCA jacks are all female type. D.Mini DIN CNC 4 Pins (SCN570S3NS00000) for S-video, the pin assignment is described as below: 1: Ground 2: Ground...
  • Page 7 HDMI Timing V FREQ H FREQ STANDARD RESOLUTION 480p 720x480 31.46 576p 720x576 31.25 720p 1280x720 37.5 74.25 720p 1280x720 45.0 74.25 1080i 1920x1080 28.12 74.25 1080i 1920x1080 33.75 74.25 VGA Timing V FREQ H FREQ STANDARD RESOLUTION 640x480 31.47 25.17 640x480 37.86...
  • Page 8 Power Source AC100 – 240 V, 60/50 Hz Sound Output 10W X2, 8 Ohm. Signal Connector Pin Assignment Assignment Assignment Pin Assignment Red Ground 11. Ground Green Green Gro und 12. SDA Blue Blue Ground 13. Horizontal Sy Vertical Ground Not Connected Sync.

  • Page 9: Front Panel Function Control Description

    3. Front Panel Function Control Description Operation, Adjust and Programming...
  • Page 13 The operation of each OSD controls is described as following table: Option Description User Game Picture（not Press to change the Picture Mode to be User, Vivid, Movie Game, Sport, and Movie support VGA） Vivid Sport Brightness Press to adjust the Brightness from 0 to 100 Contrast Press to adjust the Contrast from 0 to 100...
  • Page 14 Channel Name Edit the channel name. (Europe only) Channel Swap Swap the channel location . (Europe only) Allow you to restore a default TV channel table. Channel reset only) Auto Allows you to auto adjust the display mode. Allows you to adjust the position of the picture left and right in the window H-Position Press VOLUME ( -, +) to adjust the Sharpness from 0 to...

  • Page 15: Adjusting Procedure

    4. Adjusting Procedure ITEM Equipments Requirements Procedure and SPEC ‧ Select SOURCE then choose VGA Color ‧ Enter the factory area VG828/Croma2327 Temp.Adustment ‧ Select Calibration 1280*800/60 all white Chroma 7120 ‧ Enter Color Temp. to User balance White balance (untouchable) ‧...
  • Page 16 Each Mode can display normally. If there is a specific Mode that is not appropriate after switch, press Auto Adjust will to VGA INPUT automatically adjust appropriate VGA Cable screen. Confirm PC can automated identify the hd155tpLCD NO. Use external-connect TV BOX, watching TV BOX VGA INPUT the TV program;...
  • Page 17 Pattern Generator Selects SOURCE menu Audio source output Enterthe SOUND adjustment Any Pattern .SOUND mode item. External connect Left/Right speaker (2.5/8ohm) DVD/VCD plays Press ▲ /▼ to set audio volume music or DVD disc a. Volume Check if the action is normal. Press▲...

  • Page 18: Trouble Shooting Flow Chart

    5. Trouble Shooting Flow Chart STEP 1. No Display ( Black ) Change AC Socket Check AC LED ON ? Fuse or power board Socket Check LCD TV Push the power Video& Audio ON/OFF switch Function Check the A/D board tuner U16-Pin3 LED Color change ?
  • Page 19 U16-PIN5 Check the connection Active low(Se of Signal cable Change AD Board Panel SPEC.) ? Display ? Change the LCD Panel Change AD Board Check Video& Display ? Audio Function Check Video& Audio Function Change AD Board...
  • Page 20 STEP 2. Check Video& Audio Function No TV,VIDEO and VGA Check Picture Video& Audio Function Change AD Board STEP 3. No Audio Check Check A/D board Video& Check Audio Speaker Function Change AD Change Speaker Board or U2...

  • Page 21: Exploded Diagram And Spare Parts List

    6. Exploded Diagram and Spare Parts List...

  • Page 22: B L O C K D I A G R A

    7. Block Diagram HDMI/DVI HDMI PANEL 1024*768 RGB/Audio L/R Composite/Audio L/R Audio amp S-video/Audio L/R MST97885LD/96885LD S-video Compoment/Audio L/R YPbPr VIDEO/AUDIO SCART Earphone Composite /SIF...

  • Page 23: Schematic Diagram

    8. Schematic Diagram...

  • Page 33: Pcb Layout Diagrams

    9. PCB Layout Diagram Keypad Board (Component Side Top) Keypad Board (Component Side Bottom) IR/LED Board (Component Side Top) IR/LED Board (Component Side Bottom)
  • Page 34 Main Board (Component Side Top)
  • Page 35 Main Board (Component Side buttom)

Table of Contents