THOMSON 50M14DP Service Manual page 19

STA381 digit AMP's request of timing:
The value of AMP module's ripple is also very important. The power is big when the
sound frequency is low, and it causes the ripple of 24V is also very big. This will cause
the AMP's over frequency protection. Otherwise the RESET signal of AMP (PIN40) is
also very important. If its timing isn't accord with the timing of Power on, there
maybe have problems that: noise in POWER on etc.
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