21FJ4RB - Television LG - Free user manual and instructions
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| Product Type | 21-inch CRT Television |
| Brand | LG |
| Model | 21FJ4RB |
| Screen Size | 21 inches (diagonal) |
| Dimensions (with stand) | Approx. 20.5 x 19.7 x 18.5 in (520 x 500 x 470 mm) |
| Weight | Approx. 30.9 lbs (14 kg) |
| Power Consumption | 80 W (typical) |
| Power Supply | AC 100-240V, 50/60Hz |
| Display Type | CRT (Cathode Ray Tube) |
| Aspect Ratio | 4:3 |
| Audio Output | Built-in mono speaker, 5W |
| Input Ports | RF antenna input, Composite AV (RCA), S-Video |
| Remote Control | Included (model AKB7xxxx) |
| Functions | Auto channel search, sleep timer, parental lock, teletext |
| Safety | Ensure proper ventilation; do not block vents; avoid liquids; use grounded outlet |
| Cleaning | Wipe with a soft, dry cloth; do not use abrasive cleaners |
| Spare Parts | Remote control, power cord, AV cables (sold separately) |
| Repairability | Serviceable by qualified technician; CRT high voltage hazard |
| Manual Pages | 20 pages (English) |
Frequently Asked Questions - 21FJ4RB LG
How do I connect my cable box to the LG 21FJ4RB TV?
Use an RF coaxial cable from your cable box's RF out to the TV's antenna input. Alternatively, use composite AV cables (yellow, white, red) if your cable box has AV out.
Why is the TV not turning on?
Check the power cord is securely plugged into a working outlet. Ensure the power switch on the TV is on. If still off, unplug for 60 seconds and try again.
How do I set up channels automatically?
Press the Menu button, navigate to Channel or Setup, select Auto Tuning or Auto Program. The TV will scan for available channels.
The remote control is not working. What should I do?
Replace the AAA batteries with fresh ones. Ensure there is no obstruction between remote and TV. Point the remote directly at the TV's IR sensor.
How do I clean the screen safely?
Turn off the TV and unplug it. Use a soft, dry microfiber cloth to gently wipe the screen. Do not spray any liquid directly on the screen.
Is there a sleep timer function?
Yes. Press the Sleep button on the remote repeatedly to set timer intervals (e.g., 30, 60, 90, 120 minutes). The TV will turn off automatically.
Why is there no sound?
Check the volume level is not muted. Ensure external devices are properly connected. Try a different input source to isolate the issue.
Can I connect a DVD player?
Yes, connect using composite cables (yellow to video, red/white to audio) into the AV input jacks on the back of the TV.
How do I adjust picture settings?
Press Menu, go to Picture or Video settings. You can adjust brightness, contrast, color, and sharpness to your preference.
What does the 'Parental Lock' do?
It restricts access to certain channels or programs. You set a 4-digit PIN in the Parental Lock menu to block content by rating or channel.
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