BBK DK2810HD - Page 40

4 Troubleshooting flow chart of amplify external input has no sound is shown in figure 3.3.2.4
Whether
mix terminal has
output
Normal
Whether
pin 10 and 12 of N502
have signal
Replace N505
Whether
pin 5 and 14 of N505
have signal
Check mix input terminal
Y
N
N
Y
N
Y
Whether
pin 206 of MT1389
has signal
Replace MT1389
N
Y
normal
Whether
pin 34 and 38 of N508
have output
N
Replace N508
Y
Figure 3.3.2.4 Troubleshooting flow chart of amplify external input has no sound
External input has no sound
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