9-3. Mainboard Failure Check
Symptom: No Sound
No Sound
(All Mode)
Check the input
Source
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
49
Service Manual
Model No.: HL22F2a
Summary of Contents for HL22F2
Page 10: ...Service Manual Model No HL22F2a 9 2 2 External pictures four faces Front Side Left Side ...
Page 11: ...Service Manual Model No HL22F2a 10 TOP Side Back Side ...
Page 12: ...Service Manual Service Manual Model No HL22F2a ...
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Page 28: ...Service Manual Model No HL22F2a 7 3 Wiring Connection Diagram 27 ...
Page 29: ...Service Manual Model No HL22F2a 28 ...
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Page 49: ...9 2 Power Supply Board Failure Check Service Manual Model No HL22F2a 48 ...