This book introduces the design principles of intelligent products and discusses in depth how to design intelligent products, how to implement intelligent product functions, and how to evaluate intelligent products. This book is suitable for readers engaged in intelligent product design, intelligent product development, intelligent product evaluation, etc.
This manual covers all aspects of the AK-W407ML portable CD audio player, including power connections, battery installation, and the physical layout of the device. It explains how to operate CD/MP3 playback, radio tuning, volume adjustment, and program memory functions.
Additional sections describe proper care, cleaning, and safety warnings, as well as detailed troubleshooting steps and service contact information for warranty support. This manual is written in Chinese.
| Rated AC voltage | 110 V 60 Hz |
|---|---|
| Net weight | ≈1.18 kg |
| Dimensions (W×D×H) | 290 mm × 240.5 mm × 120 mm |
| AM radio frequency range | 530 kHz – 1650 kHz |
| FM radio frequency range | 88 MHz – 108 MHz |
Open the battery compartment at the bottom, insert six AA batteries following the correct polarity, and ensure the AC power plug is removed before using battery power.
Press the PROGRAM button, then press STOP; this will delete all stored program tracks.
Immediately unplug the power cord, stop using the device, and contact the service hotline for assistance.