Envision EN7220 Service Manual page 3

5.3 Electrical Block Diagram -----------------------------------------------------16
5.3.1 Scalar Board --------------------------------------------------------------
5.3.2 Inverter/Power Board ---------------------------------------------------
6. Schematic ----------------------------------------------------------------------------19
6.1 Scalar Board --------------------------------------------------------------------19
6.2 Inverter/Power Board
6.3 Key Pad Board -----------------------------------------------------------------24
7. PCB Layout --------------------------------------------------------------------------
7.1
Main Board ---------------------------------------------------------------------25
7.2
Inverter/Power Board --------------------------------------------------------26
7.3
Keypad Board -----------------------------------------------------------------26
8. Maintainability -----------------------------------------------------------------------
8.1 Equipments and Tools Requirements -----------------------------------
8.2 Trouble Shooting -------------------------------------------------------------
8.2.1
Main Board
8.2.2
Power/Inverter Board
8.2.3
Key Pad Board ------------------------------------------------------------33
9. White-Balance, Luminance Adjustment ---------------------------------------
10. EDID Content ----------------------------------------------------------------------
11. BOM List ---------------------------------------------------------------------36～50
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