Philips 55PP9401 Service Manual page 44

Adjustment Procedure
Confirm the presence of these waveforms at the HiFi output.
HiFi Output Waveforms
BBE Surround Operation Check
Adjustment Preparation
1. Set the Master Volume Control to midrange (vol. 30).
2. Set the Balance Control to the center.
3. Set the Bass and Treble Controls to midrange.
4. Set Loudness to off.
5. Set Perfect Volume to off.
6. Set Internal SP to on.
7. Set SRS to off.
8. Input a 1Vp-p, 100Hz audio signal to the R audio input, with no signal to the L audio
input, then input a 1Vp-p, 10kHz audio signal to the L audio input, with no signal to
the R audio input.
Adjustment Procedure
Confirm the presence of these waveforms at the HiFi output.
HiFi Output Waveforms
7618 Service Adjustments page 13