Section 7. Speaker Part; Electrical Troubleshooting Guide - LG DA-W6100A Service Manual

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SECTION 7. SPEAKER PART

ELECTRICAL TROUBLESHOOTING GUIDE

1. RX all kinds of power check
C245(+) DC5V Check
1. C281(+) DC3.3V Check
2. C246(+) DC3.0V Check
3. C257(+) DC1.8V Check
4. C288(+) DC2.7 Check
5. C250(+) DC2.7 Check
2. TX all kinds of power check
• TX is truned AUTO ON/OFF according to main body (DA-5620)'s ON/OFF status. so, the
power of main body should be ON.
LED ON/OFF Check (DC5V Check)
C140(+) DC3.3V Check
1.C147(+) DC1.8V Check
2.C145(+) DC2.7V Check
3.C149(+) DC3.0V Check
4.C177(+) DC2.7V Check
YES
YES
normal operation
YES
YES
YES
normal operation
Digitized in Heiloo Netherland
NO
SMPS board power DC5V Check
1.IC212 Soldering check and Replacement
NO
2.IC206 Soldering check and Replacement
3.IC209 Soldering check and Replacement
4.IC214 Soldering check and Replacement
5.IC208 Soldering check and Replacement
NO
DC JACK, main body cable connection check
IC114 Soldering check and Replacement
NO
IC113 Soldering check and Replacement
1.IC112 Soldering check and Replacement
NO
2.IC111 Soldering check and Replacement
3.IC110 Soldering check and Replacement
4.IC115 Soldering check and Replacement
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