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15

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Chapter 5 - Other information

Password in Parental Control

 - The default password is 1234. You can change it to 

a new one.

 - The super password is 0423. If you forget your 

code, enter the super password to override any 

existing codes.

Troubleshooting

Please check the following list before requesting 

service.

There is no picture or sound.

• Make sure the power cord is properly inserted in the 

power outlet.

• Make sure the source type is set correctly.
• Make sure the antenna is properly connected.
• Make sure the volume is not set to minimum or the 

sound is not set to mute.

• Make sure the headphones are not connected.
• The TV may be receiving a signal other than from 

TV broadcasting stations.

Picture is not clear.

• Make sure the antenna cable is properly connected.
• Consider whether your TV signal is being properly 

received.

• 

Poor picture quality can occur due to a VHS 

camera, camcorder, or other peripheral being 

connected at the same time. Switch off one of the 

other peripherals.

• The ‘ghost’ or double image may be caused by 

obstruction to the antenna due to high-rise buildings 

or hills. Using a highly directional antenna may 

improve the picture quality.

• The horizontal dotted lines shown on the pictures 

may be caused by electrical interference, e.g., hair 

dryer, nearby neon lights, etc. Turn off or remove 

these. 

Picture is too dark, too light or tinted. 

• Check the colour adjustment. 
• Check the brightness setting.
• Check the sharpness function. 

Remote control does not work.

• Check the batteries of the remote control. 
• Make sure the remote sensor window on the TV 

front is not under strong fluorescent lighting. 

• Try to clean the remote sensor window on the TV 

front with a soft cloth.

If the above suggestions do not solve your technical 

issue, please refer to the warranty card for service 

information. 

Operating Conditions

Temperature 5°C - 35°C (41°F - 95°F)

Humidity 20 - 75% (non-condensing)

Storage Conditions

Temperature -15°C - 45°C (5°F - 113°F)
Humidity 10 - 90% (non-condensing)

Radio Information

• Bluetooth® transmitter frequency range:  

2402 - 2480MHz

• Bluetooth®

 transmitter power: 6dBm (+/-4dB)

• 2.4G Wi-Fi transmitter frequency range:  

2412 - 2472MHz

• 

2.4G Wi-Fi transmitter power: 14dBm (+/-2 dB)

• 

5G Wi-Fi transmitter frequency range: 

 -

Band 1: 5180 - 5240MHz

 -

Band 4: 5745 - 5825MHz

• 

5G Wi-Fi transmitter power: 14dBm (+/-2 dB)

• 

DVB-T/T2/C tuner frequency range: 50.5 - 858MHz

• 

DVB-S/S2 tuner frequency range: 950 - 2150MHz

* In all EU member states, operation of 5180 - 

5240MHz is restricted to indoor use only.

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OSS Notice

This product uses the GPL (Version 2 and 3) and 

LGPL (version 2.1) and MPL (version 1.1).

To send inquiries and requests for questions 

regarding open source, contact nearest TCL office. 

This product uses some software programs which are 

distributed under the Independent JPEG Group.

This product uses some software programs which are 

distributed under the libpng Project.

This product uses some software programs which are 

distributed under the Freetype Project.

This product uses some software programs which are 

distributed under the zlib Project.

This product uses some software programs (libxml2, 

curl, expat, c-areas) which are distributed under the 

MIT.
This product uses CyberLink for C which is distributed 

under the Open Source Project.

This product uses opensl, xerces which is distributed 

under the Apach License Project.
GPL software: Linux Kernel, glib, libiconv, gcc libgcc, 

gcc +, u-Boot loader, ffmepg, util-linux-ng, 

e2fsprogs, wget, iptables

Summary of Contents for P637

Page 1: ...erson in order to avoid a hazard Leave more than 10cm clearance around the television to allow adequate ventilation The ventilation should not be impeded by covering the ventilation openings with item...

Page 2: ...cover in Ethernet connection mode or USB playing mode due to electrostatic discharge user intervention is required Bluetooth function notice Bluetooth technology if available in your TV uses 2 4GHz fr...

Page 3: ...recycling in accordance with your national legislation and the Directive 2012 19 EU 2006 66 EC and 2008 12 EC By disposing of these products correctly you will help to conserve natural resources and w...

Page 4: ...annels 11 Common interface 11 Using the common interface module 11 Accessing common interface services 11 Using subtitles 11 Turning on off subtitles 11 Enabling subtitle languages on digital TV chann...

Page 5: ...rd before connecting devices Cable Chapter 1 Connections Optical Digital audio out USB 2 0 Service port 5V 0 5A MAX LAN HDMI 1 4K HDMI 2 4K eARC ARC Antenna Cable input Satellite input 13 18V 0 4A MAX...

Page 6: ...o use high quality and well shielded HDMI cables to avoid possible interferences Please use headphones with 3 5mm TRS connector Excessive sound pressure from headphones can cause hearing loss Connect...

Page 7: ...dio language available for selected digital TV programme GUIDE To toggle the Electronic Programme Guide on or off only available for digital channels TEXT To toggle Teletext on or off SUBT To select a...

Page 8: ...le To control the volume P To change channels NETFLIX To access Netflix if available To access T Channel Notes This remote control is available only for selected models The remote control type may be...

Page 9: ...and hold the button for more than 2 seconds to confirm your selection Note Please refer to the Quick Start Guide to find the button on your TV set Switch the TV on and off 1 When the power cord is con...

Page 10: ...ng to circumstances of the content provider an application s updates or the application itself may be discontinued Depending on your country s regulations some applications may have limited service or...

Page 11: ...nterface module may damage both the module and your TV 1 Following the directions printed on the common interface module gently insert the module into the common interface slot on the TV 2 Push the mo...

Page 12: ...sible that some devices may not interoperate correctly when connected to this TV The user manual or the manufacturer of the problematic devices should be consulted for further information HbbTV HbbTV...

Page 13: ...rences and if you continue to face issues you should move closer to TV or increase space between TV and source of interferences The Bluetooth word mark and logos are registered trademarks owned by Blu...

Page 14: ...on if available 4 Say OK Google to activate it Notes This hands free TV voice control is only available for selected models For details please refer to your local dealer A quiet surrounding is require...

Page 15: ...n the TV front with a soft cloth If the above suggestions do not solve your technical issue please refer to the warranty card for service information Operating Conditions Temperature 5 C 35 C 41 F 95...

Page 16: ...LY DISCLAIMS ALL WARRANTIES AND CONDITIONS WITH RESPECT TO THE DEVICE AND ANY CONTENT AND SERVICES EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY OF SATISFACTORY...

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