Do you have a question about the Tandy CM-4 and is the answer not in the manual?
Procedures for safely servicing the high voltage system and picture tube.
Information on X-ray radiation sources and high voltage limits.
Safety checks before returning the monitor to the user.
How the shut-down circuit prevents excessive high voltage.
Description of the monitor's power supply circuits and protection.
Procedure for checking the high voltage output.
Test procedure for the X-ray protector circuit.
Procedure for adjusting color purity using magnets and yoke.
Procedure for adjusting white balance and tracking.
Procedure for adjusting static convergence using magnets.
Procedure for adjusting dynamic convergence using yoke wedges.
Steps to diagnose and resolve no power issues.
Troubleshooting power circuit activation and related components.
Troubleshooting horizontal sync circuit problems.
Diagnosing issues when no raster is displayed on the screen.
Diagnosing issues when the screen is blank or shows no picture.
Diagnosing problems with horizontal or vertical synchronization.
Diagnosing issues when the vertical sweep does not occur.
Diagnosing issues when no specific color is displayed.