HITACHI 60SX10
Instrukcja Serwisowa

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50UX22BA/23KA 46UX20BAl21 50SX7PA KA

3.2.4.6. Hall surround/monaural

check

Adjustment procedure Check that the following waveforms are obtained. *Front: The phases of R and L are different. The amplitudes are different. *Rear: The phases of R and L are opposite. The amplitudes of R and L are equal.
FRONT REAR

ohserve the vertical line to adjust

Note:

Directly

observe

the screen

by eye without

using

a mirror.

3.2.6. Horizontal

AFC adjustment

(R367)

Note: The monaural

check can be omitted. front R and L are not even depending Center has no output.

Amplitude levels on the P.W.B.

of

3.2.4.7. Dolby surround

check

Adjustment procedure (1) Set to SURROUND: DOLBY <heck that the following waveforms are obtained. *Front: 4OOHz is superimposed on 5kHz. *Rear: R and L are the same signal and 400Hz is superimposed on 5kHz.
FRONT L REAR

Adjustment preparation (1) Receive the reverse cross-hatch pattern signal. (Crosshatch lines are black.) (2) Set CONTRAST to maximum BRIGHTNESS to center. (3) Lens focus should be completed. (4) Electrical focus should be coarse adjusted. (5) The digital convergence RAM should be cleared (uncorrected state). With the TV set off, press and hold the service switch located on the front panel (see page 1 l), and then press the power button. Use a small insulated tool to reach inside the control panel to press the switch. (6) Raster inclination should be completed. Adjustment procedure (1) Project only green color. Cover R & B lenses or short 2P mini connectors on CPT P.W.B.�s. (2) Adjust H-size to minimum. R649 fully counterclockwise. (3) Adjust green centering magnet (located on DY) to shift picture left to display edge of raster. (4) Adjust AFC (R367) so foldover of front porch occurs. Amount of foldover is l/2 to 2/3 of front porch (t?,).

R

Note: MODE:

PRO-LOGIC CENTER: NORMAL Set as above.

3.2.4.6. Dolby surround/monaural

check

Adjustment procedure Check that the following waveforms are obtained. *Front: R and L waveforms are the same signal. *Rear: (Almost no output from both R and L.)
FRONT REAR

Jz7r-l

Note: (1) Front

and back porch of video should be equal. (2) If adjustment is difficult with test pattern, follow adjustment 2.3.

Note: Front

side check

can be omitted.

3.2.5. Shoot balance adjustment

(Fl333)

3.3.DEFLECTION SYSTEM ADJUSTMENT 3.3.1. Raster inclination adjustment (Deflection

Adjustment preparation (1) Receive the reverse cross-hatch pattern signal. (Crosshatch lines are black.) (2) Set the video condition to factory reset. (3) Turn the shoot balance adjustment VR (R333) fully counterclockwise. Adjustment procedure Gradually turn the shoot balance adjustment VR (R333) clockwise and adjust so that the width of pre-shoot and over-shoot of the vertical line (black) shown in the circle pattern are balanced. (Visually adjust.)

Adjustment preparation (1) The set can face east or west. (2) Input the single cross test signal. (3) CONTRAST: MAX BRIGHTNESS: CENTER (4) The lens focus adjustment should have been completed. (5) The electric focus should have been coarse adjusted. (6) The digital convergence RAM should be cleared (uncorrected state). With the TV set off, press and hold the service switch located on the front panel (see page 1 l), and then press the power button. Use a small insulated tool to reach inside the control panel to press the switch. (7) Start adjustment 20 minutes or more after TV is turned on. Adjustment procedure (1) Apply covers to the R and B lenses and project only green light. (2) Turn the G deflection yoke and adjust the vertical raster inclination.

yoke)

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