Do you have a question about the Nokia 447ZiPlus and is the answer not in the manual?
Model identification for the service manual.
Essential safety guidelines for handling and servicing the monitor.
Describes the SMPS, power management, heater voltage, and degaussing circuits.
Explains vertical, horizontal deflection, width, pincushion, and video circuits.
Covers brightness, spot killer, blanking, horizontal position, HV control, and fail-safe circuits.
Procedure to adjust the B+ output voltage to specified levels.
Steps for adjusting HV and sub-brightness to correct raster display.
Flowchart for diagnosing issues when the monitor does not power on.
Flowchart for diagnosing issues when raster is visible but no video signal.
Flowchart for diagnosing issues when no raster is displayed on the screen.
Flowchart for diagnosing missing Red, Green, or Blue video signals.