The manual for the Hallicrafters Model PS-500A-AC power supply provides instructions for chassis removal, bias adjustment, and connection to the Model SR-400 transceiver, ensuring proper operation from a 117/234 volt AC source. It includes a repair parts list and warns about the presence of lethal high voltage, emphasizing caution during installation and checks.

• Brand: Hallicrafters
• Model: BIAS
• Type: manual
• File size: 484.8 KB

Manual Overview

The Hallicrafters Model PS-500A-AC is a power supply designed for the SR-400 Transceiver, operating from a 117/234 volt AC source. It provides necessary voltages through a 12-pin power plug and includes a 3.2-ohm speaker. For troubleshooting, the manual details chassis removal by unscrewing the rear cover and bottom screws, disconnecting the speaker leads, and sliding the chassis out. The repair parts list includes various capacitors, diodes, resistors, and other components, with specific part numbers for replacements. Calibration involves adjusting the bias control (R206) on the power supply to maximum voltage before setting the transceiver’s BIAS ADJ. control. The schematic diagram offers board-level guidance, showing component placements and connections. High voltage warnings are emphasized for safety during installation and checks.

Quick Issues Covered

• Diagnose power-up failures with Model PS-500A-AC power supply.
• Adjust bias voltage using R206 for optimal transceiver performance.
• Trace circuits using the PS-500A-AC schematic for component issues.

Overview

Hallicrafters’ Model PS-500A-AC Power Supply is a complete, self-contained power unit designed to operate the Model SR-400 Transceiver from a nominal 117/234 volt AC source. It provides all necessary supply voltages through a 12-pin power plug and cable. The power supply can operate from a 105-volt to 125-volt, or 210-volt to 250-volt, 50/60 cycle AC source and includes a 3.2-ohm permanent-magnet type speaker. The manual covers chassis removal, bias adjustment, and includes a repair parts list.

Specifications

• AC power supply model: PS-500A-AC
• Designed for: Hallicrafters' Model SR-400 Transceiver
• Input voltage: 105-volt to 125-volt, or 210-volt to 250-volt AC
• Frequency: 50/60 cycle
• Connector: 12-pin power plug
• Speaker: 3.2-ohm permanent-magnet type
• Fuse: 5 Amperes, 125 Volts, 3 AG, Slow Blow

Controls & Indicators

Refer to the PDF for details.

Installation / Setup

Refer to the PDF for details.

Operation

Refer to the PDF for details.

Troubleshooting & Error Codes

Refer to the PDF for details.

Safety & Warnings

LETHAL HIGH VOLTAGE IS PRESENT WITHIN THIS EQUIPMENT, BE CAREFUL WHEN INSTALLING THE UNIT AND WHEN PERFORMING CHECKS.

Download BIAS Manual (PDF – 484.8 KB)

Hallicrafters PS-500A AC Power Supply Manual: Guide for troubleshooting and adjusting BIAS model. PDF size: 484.8 KB.

• Brand: Hallicrafters-ps-500a-ac-power-supply-with-adjustable
• Model: BIAS
• Type: Manual
• File size: 484.8 KB

Overview

Brief overview of the product.

Specifications

• Key spec 1
• Key spec 2

Controls & Indicators

Control panel/button layout.

Installation / Setup

1. Step 1…
2. Step 2…

Operation

Basic usage, modes, cycles.

Troubleshooting & Error Codes

Safety & Warnings

• Important warning…

Downloads

Download BIAS manual (PDF)