5.10 Adjustments, English
Adjustments, English 5.11
- Connect an audio oscillator to the V.TAPE socket 14P21.
14P21 pin 2
Audio right in
14P21 pin 4
Audio ground
14P21 pin 6
Audio left in
- Press
VTAPE
and toggle on
LIST
until the display reads
SPEAKER
, and then press
1
(Sound mode 1 - internal TV speakers).
- The TV sound controls, Bass, Treble and Balance, must be unregulated (0), and the
loudness must be Off. Press:
MENU 4
(or
3
)
2 1
and adjust by pressing
n
,
l
,
p
or
m
.
- Connect an AF voltmeter to 10P57 pin 1 (right in) or pin 4 (left in) with ground to
pin 2.
- If the level in the treble has to be adjusted, set the signal from the audio oscillator
to 10kHz, and adjust the level at the input to 250mV by means of the audio
oscillator output and volume
r
or
u
on Beo4.
- If the level in the bass has to be adjusted, set the signal from the audio oscillator
to 1kHz, and adjust the level at the input to 250mV by means of the audio
oscillator output and volume
r
or
u
on Beo4.
- Connect an AF voltmeter across the output of the unit in question (the speaker
units need not to be connected during the adjustment procedure):
Bass:
10P77 pin 1
Bass right out
10R402 See
7
10P77 pin 3
Bass right ground
10P78 pin 1
Bass left out
10R404
10P78 pin 3
Bass left ground
Treble:
10P77 pin 2
Treble right out
10R403
10P77 pin 3
Treble right ground
10P78 pin 2
Treble left out
10R405
10P78 pin 3
Treble left ground
- Adjust until the voltage at the speaker output corresponds to the voltage found
in the speaker level table by means of the rated value stamped on the back of the
speaker unit.
Rated value in dB Bass Treble
+2.00 dB
1.57 V
2.04 V
+1.75 dB
1.62 V
2.10 V
+1.50 dB
1.67 V
2.16 V
+1.25 dB
1.71 V
2.23 V
+1.00 dB
1.76 V
2.29 V
+0.75 dB
1.82 V
2.36 V
+0.50 dB
1.87 V
2.43 V
+0.25 dB
1.92 V
2.50 V
0.00 dB
1.98 V
2.57 V
- 0.25 dB
2.04 V
2.65 V
- 0.50 dB
2.10 V
2.72 V
- 0.75 dB
2.16 V
2.80 V
- 1.00 dB
2.22 V
2.88 V
- 1.25 dB
2.29 V
2.97 V
- 1.50 dB
2.35 V
3.05 V
- 1.75 dB
2.42 V
3.14 V
- 2.00 dB
2.49 V
3.24 V
ABO-CENTER
v/HENRIKSENS
ELEKTRONIK