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Details on frequency coverage, display, keys, controls, and physical characteristics.
Specifies test conditions for receiver performance metrics like sensitivity and audio output.
Steps to prepare for alignment, including test mode entry and frequency checks.
Step-by-step guide for aligning the Phase Locked Loop circuit using test equipment.
Procedure for aligning the Voltage Controlled Oscillator, including test points and settings.
Steps to align the discriminator circuit using signal generator and voltmeter.
Procedure for aligning the Intermediate Frequency (IF) stage for optimal performance.
Alignment steps for the receiver sensitivity and SINAD performance across various bands.
Procedure to adjust the squelch control for proper operation.
Diagnostic steps for reception issues, checking transistors and microprocessor status.
Flowchart for diagnosing audio output problems and checking related components.
Troubleshooting steps for RF band abnormalities, covering sensitivity and band-specific issues.
Top view diagram of the main printed circuit board with component locations.
Top view of the control PCB showing component placement and connections.
Bottom view of the control PCB detailing chip parts and layout.
Bottom view of the main PCB with wiring connections and chip parts locations.
List of components for the main PCB assembly, including capacitors and resistors.
List of diodes and other semiconductor components used in the device.
Parts list for jacks, connectors, and inductive coils used in the unit.
List of transistors and resistors with their specifications and part numbers.
List of integrated circuits (ICs) used in the device, including their functions.
Components for the control and keyboard PCBs, including capacitors and substitution data.
Information on alternative components that can be used as replacements.
Instructions for removing the top and bottom cases of the unit.
Steps for safely removing the front panel from the device.
Diagrams showing the lead identification for various diodes.
Diagrams illustrating the pinouts for different transistor types.
Detailed schematic of the control section, showing component connections.
Schematic diagram for the main functional blocks of the scanner.
General