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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
6OSXi OBAII
50UX22BA/23KA 46UX20BAl21 50SX7PA
1 KA KA
3.2.3. Sub picture adjustment
@506-B, R505-G, R502-R)
3.2.4.2. Surround
off/monaural
check
is obtained. The amplitudes
Adjustment preparation (1) Start adjustment after power is on for 20 minutes. (2) Use a white raster signal for adjustment. (3) Press �FREEZE� on the remote control to display the sub picture. (4) Set contrast to center, brightness minimum, Al off. Adjustment procedure (1) Connect oscilloscope to TP802B and adjust R506 to match blue level of main and sub pictures. (2) Repeat for TP802G and R505 green, TP802R and R502 for red.
Adjustment procedure Check that the following of 2 channels are equal.
waveform
FRONT
R fld
(400Hz)
L
n+r-l
(400Hz)
Note: Monaural
have
check no output.
can
be omitted.
The
rear and center
3.2.4.3. Matrix surround
check
are obtained. and L are different and 5kHz. The amplitudes of R and L are opposite and 5kHz. The amplitudes of R
Note: If the sub picture
point. i,
has a signal
sag,
adjust
level
at center
Adjustment procedure (1) Set to SURROUND; MATRIX. *Check that the following waveforms *Front: Check that the phases of R 400Hz is superlmposed on and L are different. *Rear: Check that the phases of R 400Hz is superimposed on and L are different.
FRONT
REAR
L
Note: Center 3.2.4. Surround operation check
Adjustment preparation Input the following audio signals to the audio input of the VIDEO INPUT terminals. *When checking surround: L CH: 400Hz sine wave 475mVrms R CH: 5kHz sine wave 475mVrms *Set the AUDIO PREFERENCE SETTING for INT. SPEAKERS ON. *Set the volume controls of FRONT, CENTER and REAR to around their centers. *Set the BASS, TREBLE and BALANCE to TYP. Note: Front waveform: Front speaker output of the set Rear waveform: Rear speaker output of the set
has no output.
3.2.4.4. Matrix surround/monaural
Adjustment procedure Check that the following waveforms are obtained. *Front: R and L waveforms are almost equal. *Rear: R and L waveforms are almost zero.
REAR
check
3.2.4.1. Surround
off check Note: Center
and check that the waveform has no output.
Adjustment procedure (1) Set to SURROUND: OFF shown below is obtained.
3.2.4.5. Hall surround
check
(5kHz)
(400Hz) R
Adjustment procedure (1) Set to SURROUND: HALL. *Front: Check that the phases of R and L signals are different and 400Hz is superfmposed on 5kHz. *Rear: Check that the R and L are opposite and 400Hz superimposed on 5kHz. The R and L amplitudes are equal.
FRONT REAR
is
L
Note: The rear and center
will have
no output.
R
Note: Amplitude
levels of front R and L are not even on the P.W.B. Center has no output.
depending
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