LG Electronics Inc.
LG501C
IMPORTANT
Read This Information Before Using Your Hand-Held Portable Cellular Telephone
First introduction in 1984, the hand-held portable Cellular telephone is one of the most exciting and innovative
electronic products ever developed.
With it you can stay in contact with your office, your home, emergency service, and others. For the safe and efficient
operation of your phone, observe these guidelines.
Your Cellular phone is a radio transmitter and receiver. When it is ON, it receives and also sends out radio frequency
(RF) energy. The phone operates in the frequency range of 824 MHz to 894 MHz and employs commonly used
frequency modulation (FM) techniques. When you use your phone, the Cellular system handling your calls controls
the power level at which your phone transmits. The power level can range from 0.006 of a watt to .6 of a watt.
Exposure to Radio Frequency Energy
In 1991 the Institute of Electrical and Electronics Engineers (IEEE), and in 1992 the American National Standards
Institute (ANSI) updates the 1982 ANSI Standard for safety levels with respect to human exposure to RF energy.
Over 120 scientists, engineers, and physicians from universities, government health agencies, and industry, after
reviewing the available boy of research, developed this updated Standard. In March, 1993, the US Federal
Communications Commission (FCC) proposed the adoption of this updated Standard.
The design of your phone complies with this updated Standard. Of course, if you want to limit RF exposure even
further than the updated ANSI Standard, you may choose to control the duration of your calls and operation your
phone in the most power efficient manner.
Efficient Phone Operation
For your phone to operate at the lowest power level, consistent with satisfactory call quality, please observe the
following guidelines:
If your phone has an extendable antenna, extend it fully. Some models allow you to place a call with the antenna
retracted. However, your phone operates more efficiently with the antenna fully extended.
Hold the phone as you would any other telephone. While speaking directly into the mouthpiece, position the antenna
up and over your shoulder.
Do not hold the antenna when the phone is “IN USE”. Holding the antenna affects call quality and may cause the
phone to operated at a higher power level than needed.
Antenna Care and Replacement
Do not use the phone with a damaged antenna. If a damaged antenna comes into contact with skin, a minor bum may
result. Replace a damaged antenna immediately. Consult your manual to see if you may change your antenna yourself.
If so, use only a manufacture approves antenna. Otherwise, take your phone to a qualifies service center for repair.
Use only the supplied or approved antenna. Non-approved antennas, modifications, or attachments, could impair call
quality, damage the phone, and violate FCC regulations.
CHAPTER 5. Safety
118
Summary of Contents for 501C
Page 1: ...Internal Use Only Service Manual LG 501C Date January 2011 Issue 1 0 ...
Page 21: ...LG Electronics Inc LG501C X XYUGj GutzpkG G GvrU XXUGj GtjjG G Gvr XWUGj G Gz Gj G G GvrU 21 ...
Page 25: ...LG Electronics Inc LG501C Y YZUGw GvrU Y UGw GvrU YYUGw GvrU 25 ...
Page 28: ...LG Electronics Inc LG501C Figure 1 1 Block Diagram of LG501C 28 ...
Page 30: ...LG Electronics Inc LG501C 30 ...
Page 31: ...LG Electronics Inc LG501C 31 ...
Page 50: ...LG Electronics Inc LG501C Waveform U1801 2pin U1102 5pin U1102 1pin 50 ...
Page 59: ...LG Electronics Inc LG501C Waveform 4 1 2 c 4 1 2 d U1801 2pin U1102 5pin U1102 2pin 59 ...
Page 133: ...LG Electronics Inc LG501C Appendix 133 ...
Page 134: ...LG Electronics Inc LG501C Appendix 1 Block Diagram LG501C BLOCK DIAGRAM 134 ...
Page 135: ...LG Electronics Inc LG501C Appendix 2 Circuit diagram 135 ...
Page 147: ...LG Electronics Inc LG501C 2 1 MAIN PCB CIRCUIT DIAGRAM Internal Use Only 147 ...
Page 150: ...LG Electronics Inc LG501C Appendix 3 BGA Pin Map 150 ...
Page 151: ...LG Electronics Inc LG501C 3 1 U7301B BCM2070B2KUBXG EUSY0418701 USED PIN NOT USED PIN 151 ...
Page 152: ...LG Electronics Inc LG501C 3 2 U2101B QSC6055 CD EUSY0336202 NOT USED PIN 152 ...
Page 153: ...LG Electronics Inc LG501C 3 3 U2201B H8BCS0SI0BAR 46M EUSY0347506 153 ...
Page 154: ...LG Electronics Inc LG501C 3 4 U6481B TPA6136A2YFF EUSY0412501 USED PIN NOT USED PIN 154 ...
Page 155: ...LG Electronics Inc LG501C Appendix 4 Component Layout 155 ...