Page 1
15″/20″ COLOR LCD TELEVISION LCD-B1504 LCD-B2004 The LCD panel is manufactured to provide many years of useful life. Occasionally a few non active pixels may appear as a tiny spec of color. This is not to be considered a defect in the LCD screen.
HOW TO INITIALIZE THE LCD TELEVISION To put the program back at the factory-default, initialize the LCD television as the following procedure. How to initialize the LCD television: 1. Turn the power on. (Use main power on the TV unit.) 2.
ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: 1. Initial Setting “CBA” is abbreviation for “Circuit Board Assem- General bly.” Enter the Service mode. NOTE: Electrical adjustments are required after replacing Set the each initial data as shown on table 1 below. circuit components and certain mechanical parts. It is Table 1: Initial Data important to perform these adjustments only after all repairs and replacements have been completed.
+13.0±0.3V DC [LCD-B1504] DC Voltmeter +21.0±0.3V DC [LCD-B2004] Note: TP401(+B), TP300(GND), VR649 --- Main CBA 1. Connect DC Volt Meter to TP401 and TP300(GND). 2. Adjust VR649 so that the voltage of TP401 becomes +13.0±0.3V DC [LCD-B1504] or +21.0±0.3V DC [LCD-B2004]. L4101EA...
Page 17
Main 3/4 Schematic Diagram Comparison Chart of Models and Marks MODEL MARK LCD-B1504 LCD-B2004 L4101SCM3...
Page 18
Main 4/4 Schematic Diagram Comparison Chart of Models and Marks MODEL MARK LCD-B1504 CAUTION ! NOTE: CAUTION ! LCD-B2004 The voltage for parts in hot circuit is measured using For continued protection against fire hazard, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
Page 19
Function Schematic Diagram ( A ) Comparison Chart of Models and Marks MODEL MARK LCD-B1504 LCD-B2004 L4101SCF...
Page 20
Function Schematic Diagram ( B ) Comparison Chart of Models and Marks MODEL MARK LCD-B1504 LCD-B2004 L4201SCF...
Page 21
Inverter Schematic Diagram ( B ) Comparison Chart of Models and Marks MODEL MARK LCD-B1504 LCD-B2004 L4201SCINV...
Page 22
LCD Main 1/2 Schematic Diagram Comparison Chart of Models and Marks MODEL MARK LCD-B1504 LCD-B2004 8-10 L4101SCL1...
Page 23
LCD Main 2/2 Schematic Diagram Comparison Chart of 1 NOTE : Models and Marks CN104, CN105, CN301 are used for adjustment at factory. MODEL MARK LCD-B1504 LCD-B2004 8-11 L4101SCL2...
Need help?
Do you have a question about the LCD-B1504 and is the answer not in the manual?
Questions and answers