Hitachi 36UX52B\CZ77 Service Manual page 25

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7. SWAP
Adjustment PreDaration
(1) Press "PinP" button to set to PinP mode.
Adjustment Procedure
(I) Check that with each
press
of the "SWAP" button, the
contents of main picture and sub-picture are
exchanged.
8. FREEZE
Adjustment PreDaration
(1) Connect the signal to ANT A and
video.
(One or both of the pictures should be moving picture.)
(2) Press "PinP" button to set to PinP mode.
(3) Sub-picture should be moving picture.
Adjustment Procedure
(1) Check that with each press of the "Freeze" button,
sub-picture alternates between moving picture and
freezing picture.
MOVING PICTURE 4-b FREEZING PICTURE
1
(2) Press "PinP" button to make sub-picture disappear.
Adjustment Preparation
(1) Connect signals to ANT A and Video Input. Both sig-
nals should be moving picture.
(2) Set PinP to off.
Adjustment Procedure
(1) Check that freezing picture of main screen appears
by pressing Freeze button of the Remo-con.
(2) check it also in the TV and Video modes.
(3) Check that sub-picture disappears by pressing
Freeze button at picture freezing.
(4) Check that it turns to normal PinP sub-picture by
pressing PinP button at picture freezing.
MOVING PICTURE
,
9. PINP CH (EXCEPT 36CX35BKZ73)
Adjustment Preparation
(1) Connect the signal to ANT A and Video : 1.
(2) Press "PinP" button to set to PinP mode.
Adjustment Procedure
(I) Check that OSD changes as follows by pressing
"PIP CH" button.
Cyan
background
(Main mode) (PinP mode)
(2) Set PIP CH to PinP mode.
(3) Check that PinP sub-picture changes by channel
(A) (r) and "Input" key and receives normal picture.
I
Cyan
background
VII. MEMORY INITIALIZE (2)
After all of the adjustments of main chassis are finished,
perform memory initialize. (Operation in Item Ill.)
VIII. FINAL ASSEMBLY ADJUSTMENT/
COMMON SERVICE ADJUSTMENT
1. PURITY CONVERGENCE ADJUSTMENT
Note: For ITC type A90AHH50XOl and A90AFX15XOl
only, apply item 1.2 (8) (Purity check).
For A80LJF30X(W), apply item 1.1-I .2 (8).
1-I Adjustment Preparation
(1) Keep DY sticked to CPT funnel.
(2) Turn ON the set and receive cross-hatch signal
(or circle pattern signal). Adjust the static conver-
gence coarsely according to item (VIII, 1-4).
(3) Receive circle pattern signal and adjust the white
balance according to item 4-l I.
(4) Set BRIGHTNESS control and CONTRAST control
to maximum and apply heat-run to the set with
circle pattern signal received for 40 min or more.
1-2 Purity Adjustment
THIS ADJUSTMENT METHOD APPLIES TO THE
PURITY ADJUSTMENT BY USING MICROSCOPE.
(1) Adjust coarsely White balance, Static conver-
gence (center) and Focus.
(2) Receive circle pattern and heat-run more than T
minutes with CONTRAST and BRIGHTNESS to
maximum. Do not delete the raster nor vary the
current before fixing the position of DY. Heat-run
should be done with perfect raster.
(DY and tilt should have been coarsely adjusted.)
SUB PICTURE
25