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HITACHI 50UX22BA
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of HITACHI 50UX22BA Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 20 (click to view)
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 âFREEZEâ 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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