Philips PM 3256 - User Manual

Safety precautions for safe operation, servicing, and personnel.

Explains cautionary and warning statements and symbols.

Covers symbols, impaired protection, and general clauses.

Details performance specifications and safety compliance.

Defines vertical axis parameters like bandwidth, deflection, and pulse aberrations.

Defines horizontal axis parameters like display and trace separation.

Covers main and delayed time-base triggering and operation.

Describes the main functional blocks: pre-amp, trigger, delay line, final amplifier.

Detailed explanation of the vertical section's circuitry.

Detailed explanation of the horizontal section's circuitry.

Explains the main time-base trigger source and circuit operation.

Explains the delayed time-base trigger and circuit operation.

Describes the instrument's power supply and its components.

Covers trigger selection, input stages, and trigger coupling.

Details trigger input stages, output signals, and coupling.

Explains time-base waveforms and related controls.

Explains the delayed time-base generator operation.

Overview of the instrument's power supply unit.

Explains the converter driver and flyback converter circuits.

Describes the regulator and protection circuit with pulse-width modulation.

General information, warnings, and procedure intent.

Outlines the steps for the overall checking procedure.

Checks for vertical deflection, continuous control, and input coupling.

General notes on procedures and recommended test equipment.

Details adjustments for power supply, CRT display, and balance.

Details adjustments for LF corrections, trigger balance, and TTL level.

Covers adjustments for time-base coefficients, delay time, and calibration.

Details power supply voltage and current adjustments.

Covers intensity, ratio, trace rotation, and astigmatism adjustments.

Details adjustments for channel balance and final Y-amplifier.

Details adjustments for LF corrections and channel sensitivity.

Details adjustments for vertical channels and input capacitance.

Details adjustments for HF response and gain.

Details adjustments for trigger symmetry, balance, and TTL level.

Details adjustments for trigger view and sweep.

Details adjustments for time-base generators and X position.

Details adjustments for time-base coefficients and delay.

Details checks for vertical channel effective signal delay and bandwidth.

General notes and warnings for corrective maintenance.

Guidelines for replacing standard and special electronic parts.

Information on troubleshooting and identifying faulty circuits.

Specific hints for checking components and circuits.

Details adjustment procedures for trigger modes and sensitivity.

Details adjustments for trigger balance, TV triggering, and sweep.

Safety directives and checks for primary circuit.

Procedures for checking protective earth and insulation resistance.