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General| Tuning | Digital |
|---|---|
| Frequency Range (AM) | 520 - 1710 kHz |
| Frequency Range (FM) | 87.5 - 108 MHz |
| Display | LCD |
| Audio Output | Mono |
| Tuning Modes | Manual, Auto Scan, Memory Recall |
| Speaker | Built-in |
| Headphone Jack | 3.5 mm |
| Mode | AM, FM, SW |
| Sensitivity (FM) | 3 μV |
| Type | Portable |
| Frequency Range | AM, FM, Shortwave |
| Power Source | 4 x AA batteries or AC adapter |
| Antenna | Telescopic antenna for FM/SW |
Details the electrical performance characteristics for Shortwave reception modes.
Details the electrical performance characteristics for FM reception modes.
Details the electrical performance characteristics for Medium Wave reception modes.
Details the electrical performance characteristics for Long Wave reception modes.
Procedure for removing the back cover of the radio unit.
Steps to remove Printed Circuit Board A-1 and Board B.
Steps to remove Printed Circuit Board A-2 and Board C.
Description of the main microcontroller (IC402), keyboard matrix, and LCD.
Description of major integrated circuits like frequency synthesizer, IF amps, and power amp.
Explanation of the reference divider frequency division number transmission.
Explanation of the programmable divider frequency division number transmission.
Procedure for aligning the power supply voltage (VDD) to the specified range.
Procedure for adjusting the clock time accuracy using a Quartz Watch/Clock Analyzer.
Procedure for aligning the Phase Locked Loop (PLL) frequency using a Frequency Counter.
Procedure for aligning the AM band sensitivity using signal generators and meters.
Procedure for aligning the FM band sensitivity using signal generators and meters.
Troubleshooting steps for when the scan auto stop function does not work correctly.
Troubleshooting steps for weak sensitivity on FM and AM bands.
Troubleshooting steps for problems related to power or PLL operation.
Top and bottom views of Printed Circuit Board A-1.
Top and bottom views of Printed Circuit Boards A-2 and A-3.
Top and bottom views of Printed Circuit Boards B and C.
List of parts corresponding to the exploded view diagram.
Guidance on choosing alternative parts for repairs.
Detailed list of all electrical components used in the unit.
Voltage measurements for various Integrated Circuits across different modes.
Voltage measurements for transistors across different modes.
Diagrams showing lead identification and marking for transistors.
Diagrams showing lead identification and marking for diodes.
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