This is the user manual of China Electronics navigation TV new media machine, which mainly introduces the product features and usage methods
This manual explains how to power on the CEC CMMB handheld TV, initialize CMMB channels, register for paid services, and use its multimedia functions such as music, video, e‑book and file browsing. Detailed steps for basic operation, screen calibration, and system settings are included.
Safety guidelines cover proper handling, battery care, and warnings against water exposure, high temperatures, and improper accessories. The troubleshooting section lists common issues like no power, no signal, or playback problems and provides reset and reset‑procedure instructions. This manual is written in Chinese.
| Standby backlight current (on) | 170 mA |
|---|---|
| Standby backlight current (off) | 30 mA |
| Audio signal‑to‑noise ratio | > 80 dB |
| Frequency response | 20 Hz – 20 kHz |
| Earphone output impedance | 32 Ω |
Turn on the device, pull out the retractable CMMB antenna, and tap the magnifying‑glass icon to start automatic channel search. When a channel list appears on the right side of the screen, the initialization is complete.
Move to an open outdoor area and repeat the search, or try again at a different time because weekly maintenance may affect signal reception.
Press the small RESET button located on the back of the device with a pointed object, then the system will re‑initialize.
Do not expose the handheld TV to moisture or submerge it in water; if it gets wet, do not power it on and contact the China Electronics service center immediately.