Sony KDL 22L4000 LCD DIGITAL COLOR TELEVISION – CZ1R CHASSIS - How to enter the service mode – SMPS schematic
Sony KDL-22L4000 – RM YD025 - US
Sony KDL-22L4000 – RM YD025 - CANADA
Sony KDL-22L4000
– RM YD025 - MEXICO
Sony KDL-22L4000
RM-YD025 LATIN AMERICA
CLEANING THE LCD PANEL
CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.
Clean the cabinet of the TV with a dry soft cloth.
Wipe the LCD screen gently with a soft cloth.
Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.
If using a chemically pretreated cloth, please follow the instruction provided on the package.
Never use strong solvents such as a thinner, alcohol or benzine for cleaning.
Periodic vacuuming of the ventilation openings is recommended to ensure to proper ventilation.
ACCESSING SERVICE (FACTORY) MODE
Use the remote commander to access Service (Factory) mode after completing a repair to the TV set.
1. TV must be in standby mode. (Power on) mode.
2. To display the service menu, quickly press the following buttons on the Remote Commander
REVIEWING SERVICE (FACTORY) MODE
All of the necessary adjustment are contained in the boards for these
models, therefore the following information is for informational
purposes.
RESETTING
TO FACTORY DEFAULTS AFTER BOARD REPLACEMENT
Traditional Service Mode is not available in this chassis; however, after replacing a board you should reset all of the settings to the Factory Default from Service (Factory) Mode.
CAUTION: Resetting the TV to the Factory Defaults will over-write all customer settings including Parental Lock settiings.
1. TV must be in Service (Factory) Mode.
2. Press the DN button to select Factory Reset.
3. Press the Enter button to select Yes.
4. When the Reset is complete, the text changes to No.
5. To exit “service mode”, press the Menu button.
Traditional Service Mode is not available in this chassis; however, after replacing a board you should reset all of the settings to the Factory Default from Service (Factory) Mode.
CAUTION: Resetting the TV to the Factory Defaults will over-write all customer settings including Parental Lock settiings.
1. TV must be in Service (Factory) Mode.
2. Press the DN button to select Factory Reset.
3. Press the Enter button to select Yes.
4. When the Reset is complete, the text changes to No.
5. To exit “service mode”, press the Menu button.
Self diagnostic function
The units DO NOT contain a
self-diagnostic function. If an error occurs, the TV will not stay on.
If a repair is required for these sets, the technician should bring
both the A Board and the G Board to the customer location.
(Part numbers of boards are given below)
VIEWING MODEL INFORMATION
Use the Setup settings menu to display information about the TV.
1. TV must be On.
2. Press the Menu button to display the User Menus.
3. Press [+] until the Settings icon is selected, and then press the OK button.
4. Press [+] until Product Information is selected, and then press the OK button.
5. To exit, press the Menu button.
Power board schematic
PWB - component and conductor side
Board part numbers (Sony)
A board: 1-857-229-11
G board: 1-857-230-11
H board: 1-857-233-11
Click on the pictures to magnify