4. TROUBLE SHOOTING
4.12 Speaker/Speaker Phone path
QSC6270 LINE_OUT_L_P/LINE_OUT_R_N ÆTP1_C508, C509Æ Audio Sub System(IC501) Æ TP2_FB507, FB508 Æ TP3_CN803 1/2, 3/4 PIN(=Main to F_SUB_FPCB Connector) Æ TP4_CN101 1,2 PIN(=F_SUB_FPCB to Main PCB Connector) ÆTP5_CN102(= Speaker Pad of F_SUB_FPCB)
START |
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Connect the phone to network |
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Equipment and setup call |
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Setup 1KHz tone out |
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| Yes |
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Can you hear the tone? |
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No |
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Sine wave appears at |
| Yes | ||
TP5_Speaker Pad |
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No |
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Sine wave appears at |
| Yes | ||
TP4_CN101 1,2 PIN |
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No |
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Sine wave appears at |
| Yes | ||
TP3_CN803 1/2, 3/4 PIN |
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No |
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Sine wave appears at |
| Yes | ||
TP2_FB507, FB508 |
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No |
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Sine wave appears at |
| Yes | ||
TP1_C508, C509 |
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No |
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Change the QSC6270 |
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Change the Main board |
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END
Change the Speaker
Change the F_SUB FPCB
Change the Main PCB
Change the IC501
Copyright © 2010 LG Electronics. Inc. All right reserved. | - 73 - | LGE Internal Use Only |
Only for training and service purposes |
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