LG KG280 Support and Manuals
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Service Manual - Page 2
... 11.7 ADC 118
12. BLOCK DIAGRAM 87
7. Circuit Diagram 89
8. Reset [MENU 6 109 9.7 S/W version 109
10. EXPLODED VIEW & REPLACEMENT PART LIST ..... 119
12.1 Exploded View 119 12.2 Replacement Parts 121 12.3 Accessory 137
Copyright © 2007 LG Electronics. STAND ALONE TEST 110
10.1 Introduction 110 10.2 Setting Method 110 10.3 Means of Test 111
11. LGE Internal Use...
Service Manual - Page 4
...steps to maintain telephone service. System users are responsible for the security of facilities accessed through or connected to it should disconnect telephone service until repair can result in this model.
1.2 Regulatory Information
A.
If these changes could reasonably be performed only by an unauthorized part (for training and service purposes
-5- A telephone company may...
Service Manual - Page 5
....
• When repairs are used.
• When returning system boards or parts like EEPROM to the end user. Inc. Pictures
The pictures in these protective packages until these agencies, you may interfere with anti-static mat which contain Electrostatic Sensitive Device (ESD), are for training and service purposes Interference and Attenuation
Phone may be required...
Service Manual - Page 12
...
23 Battery Indicator 24 Low Voltage Warning
Specification 13 5 dB > 6 dB
dB to ARL (dB) -35 -30 -20 -10 0 7 10
Three stage distortion < 10%
Level Ratio (dB) 17.5 22.5 30.7 33.3 33.7 31.7 25.5
2.5ppm
30ppm
At least 65 dBspl under below conditions:
1. Only for training and service purposes
- 13 - Test distance set as...
Service Manual - Page 53
The problem may
NO
YES
be elsewhere. THE PHONE WILL POWER ON. Only for training and service purposes Re-download software Does it work properly?
The power-on key
NO
And check the level change
of PWRKEY
YES
Check the voltage of
NO
The LDO outputs at U101
Charge or Change Battery
Check the contact of...
Service Manual - Page 57
4. YES
Check the soldering of R319,R320
YES Replace Q300
NO Resolder R319,R320
Resolder vibrator
LGE Internal... Q300 high ? Only for training and service purposes
YES
Replace vrbrator YES
Vibrator Working well ! All right reserved. Copyright © 2007 LG Electronics.
TROUBLE SHOOTING
Checking Flow
SETTING : Enter the engineering mode, and set vibrator on at vibration of BB test...
Service Manual - Page 67
... of VSIM LDO
Is 2.85V? YES Replace or Re-solder J300
Check the U101
Change the SIM Card
NO
And try again.
All right reserved. Our phone
supports 3V ?
Change the main board
LGE Internal Use Only
- 68 - supports only 3V SIM card.
Only for training and service purposes YES
NO
Voltage output
NO
of...
Service Manual - Page 69
...
LGE Internal Use Only
- 70 - Inc.
All right reserved. Only for training and service purposes
YES
YES
YES
Change earphone
Voltage at pin8
NO
Of CN300 low? YES
Set the audio part of the phone
NO
change the earphone
Re-download software Or check the soldering
NO
Voltage at U301.5 and U302.3 are high?
Check...
Service Manual - Page 73
... and service purposes
YES
Receiver will work properly. All right reserved.
START
Does waveform at
NO
R119 and R123
fluctuate?
Replace main board Resoldering receiver
LGE Internal Use Only
- 74 - 4. TROUBLE SHOOTING
CHECKING FLOW
SETTING : After initialize Agilent 8960, Test GSM850,EGSM,DCS,PCS mode Set the property of mobile as PRBS or continuous wave. Set the...
Service Manual - Page 86
... Came ra Speaker
& Recei ver Touch KEY
TA Ear-MIC Data Cable
Copyright © 2007 LG Electronics.
6. BLOCK DIAGRAM
6. Only for training and service purposes
- 87 - All right reserved.
Inc. BLOCK DIAGRAM
Main PCB
ABB+DBB (AD6720)
MG280/KG280 Block Diagram
Memory (256M/64M)
RF
PAM Transceiver
Antenna
SIM
Vibrat
or
Key
VGA Camera...
Service Manual - Page 105
...entering... light off at last will be saved in the phone is off : Vibration mode is displayed. Use Left...Only
- 106 - All right reserved.
9. Inc. Only for training and service purposes The value of brightness. ENGINEERING MODE
9.1 BB Test [MENU 1]
..., RED, GREEN, BLUE, BLACK 2) Contrast Value
9.1.3 Backlight
This menu is to adjust the level of the brightness set at the same time. ...
Service Manual - Page 109
... phones is close to examine the status of RX and TX of the phones ...169; 2007 LG Electronics. All right reserved. COM port a. Port : select a correct COM port - b. Only for training and service purposes Tx Test...manual explains how to -16dBm. this is to -16dBm when setting the value between 0~15) c. Selecting APC
a. Select one of RSSI close to see if the transmitter of the model...
Service Manual - Page 112
... interface card Calibration & Final test software
Test SIM Card PC (for training and service purposes
- 113 - Calibration Equipment List. Only for Software Installation)
Type / Model HP-8960
HP-66311B HP-GPIB
Pentium II class above 300MHz
Table 11-1.
AUTO CALIBRATION
11. GSM Test Set(8960)
GPIB Cable
Brand Agilent
LG LG Agilent Agilent LG
Mobile Switch Cable
Power Supply
GPIB...
Service Manual - Page 120
... Silver
26
Without Color
25
Without Color
23
Without Color
24
Black
29
Without Color
27
Black
33
Copyright © 2007 LG Electronics.
Only for reference, Part order is used for training and service purposes
- 121 - LGE Internal Use Only
Inc. EXPLODED VIEW & REPLACEMENT PART LIST
12.2 Replacement Parts
Note: This Chapter is ordered by SBOM standard on GCSC...
Service Manual - Page 136
Description
SBPP00
BATTERY PACK,LIPOLYMER
SGEY00 EAR PHONE/EAR MIKE SET
Part Number
Spec
SBPP0022105
3.7 V,800 mAh,1 CELL,PRISMATIC ,MG280c Mexico Label BATT, Pb-Free ,; ,3.7 ,800mAh ,0.2C ,PRISMATIC ,50x34x38 , ,BLACK ,Hardkpack ,Mexico Label
SGEY0003209
; ,10mW ,16 OHM ,105dB ,10KHZ ,450HZ ,[empty] ,BLACK,EARPHONE HOUSING:SILVER ,18P MMI CONNECTOR ,MONO18P(5P)LOW COST
3
SSAD00 ...
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