BBK DV725SI, Руководство по обслуживанию

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Left channel has no sound
Check
whether pin 186
o f MT1389 has sound
output
MT1389 has trouble
Check
whether pin 2
of U209 has audio signal
input
Check the line between
MT1389 and U209
Check
whether pin 1
of U209 has signal
output
U209 has trouble
Check
whether pin 17
of XS204 has signal
output
Detect Q206
Check
whether AV
board filtering capacitor
has electric
leakage
Check line and terminal
Remove one by one
5. Troubleshooting flow chart for “Left channel has no sound”is shown in the following figure 3.3.2.5:
Figure 3.3.2.5 Troubleshooting flow chart for “Left channel has no sound”
Y
N
Y
N
Y
N
Y
N
Y
N
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