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9-3. Mainboard Failure Check
Symptom: No Sound
Change Source input
Check the
input/output
Re-soldering or change
IC U13
Check the
input/output
Re-soldering or change
IC U55
Check the
input/output
Re-soldering or change
IC U2
Check the
Speaker
Change the Speaker
Check the
Sperker wire
Fail
Pass
Fail
Fail
Fail
Fail
Pass
Pass
Pass
Pass
Service Manual
Model No.: HL55XZK22a
56
Summary of Contents for HL55XZK22
Page 10: ...Service Manual Model No HL55XZK22a 9 2 2 External pictures four faces Front Side Left Side ...
Page 11: ...Service Manual Model No HL55XZK22a 10 Right Side Back Side ...
Page 29: ...Chapter 7 Electrical Parts 7 1 Block Diagram Service Manual Model No HL55XZK22a 29 ...
Page 56: ...9 2 Power Supply Board Failure Check Service Manual Model No HL55XZK22a 55 ...