RCA - PROSCAN - GE - THOMSON CR14401- CR20401- MG13400- MG19400- MR13401- MR19401 - HOW TO ENTER SERVICE MODE - FACTORY SET DATA VALUES - Power Supply Circuit Diagram - Using (TDA 16846 IC & 2SK2740 MOSFET)

TO ENTER SERVICE MODE

   Since there are no VRs in the K15A chassis, all adjustments after parts replacement must be done in the Service Mode. Service Mode adjustments are necessary when either the EEPROM (IC902) or the CRT is replaced.

• Press the following transmitter keys while in STAND-BY mode:
• MUTE—>1—>8—>2—>POWER
• “Factory Mode Menu” is displayed.

• Change the data with “Volume +, - keys.
• Change the data with “Volume +, - keys.
• Enter Service Mode using the Volume +,- keys.

SERVICE MODE MENU

• Select a mode to be adjusted, using the channel down key. Example: VCO

• Change the data with “Volume +, -  keys.

• Return to the Service mode by pressing MENU.

• Return to the Factory mode via the MENU key.

Press POWER to enter the Stand-by mode.

FACTORY SET DATA VALUES

The initial MICOM data values take effect when IC902 is replaced.

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POWER SUPPLY SCHEMATIC DIAGRAM