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Checks insulation integrity between power cord and exposed parts.
Verifies dielectric strength between power cord and exposed parts.
Measures critical clearance distances between components and metal parts.
Measures current leakage from exposed parts to ground.
Describes front panel controls, buttons, and indicators.
Details all input/output terminals and connectors on the unit.
General overview of adjustments using test tapes and signals.
Procedure for adjusting servo and logic circuits.
Procedures for various video circuit adjustments.
Methods for adjusting audio playback and recording levels.
Shows how different parts of the circuit are interconnected.
Detailed schematic of the power supply section.
Schematic of the servo and system control circuits.
Schematic of the video processing and output circuits.
Schematic of the pre-amplifier section.
Schematic of the audio processing and output circuits.
Circuit diagram for the logic switching circuit of the DVR-1181 series.
Circuit diagram for the logic switching circuit of the DVR-1383 series.
Circuit diagram for the logic switching circuit of the DVR-1989 series.
Lists parts included in the product packaging.
Lists major components of the main unit assembly.
Lists parts for the front panel of the DVR-1181 series.
Lists parts for the front panel of the DVR-1383 series.
Lists parts for the front panel of the DVR-1989 series.
Lists components for the main chassis assembly.
Identifies locations of components on the main PCB.
Identifies locations of components on the front PCB for different series.
Identifies locations of components on the power PCB.
Explains the coding system for standard electronic parts.
Lists electrical parts categorized by assembly.
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