Functional Test Of System Volume Control (S260) - Philips CCS 800 Service Manual

10.2.13 Functional test of system volume control (S260).

Measure the output level related to each position of the volume control (S260) for the loudspeakers of the Delegate and
Chairman units.
Input setting G1: M1 related to M2 (GND) is -36dBV (15.8mVrms) with a frequency of 1 kHz.
position of the
loudspeaker volume
control switch (S260)
position 10 -9.4dBV +/- 1dB
position 9 -11.4dBV +/- 1dB
position 8 -13.4dBV +/- 1dB
position 7 -15.4dBV +/- 1dB
position 6 -17.4dBV +/- 1dB
position 5 -19.4dBV +/- 1dB
position 4 -21.4dBV +/- 1dB
position 3 -23.4dBV +/- 1dB
position 2 -25.4dBV +/- 1dB
position 1 -27.4dBV +/- 1dB
position 0 < -70dBV (selective) or < -70 dBV (a-weighted)
Note: put the volume control switch (S260) to position 10 (maximum right position).
LBB 3310/00, 3330/00 and 3331/00
4822 861 11006
Figure 15
measurement results for A1
Amplification at M3
page: 27
SERVICE MANUAL
Date of issue:
July 1998