Hitachi CP2896TA Wartungshandbuch Seite 72

Service adjustments via I
Remote control buttons in service mode
When the receiver is in service mode you can select the
normal TV mode by pressing the TV button and return to
the service mode by pressing the i button.
Number and cursor buttons are used for service
adjustment. The OK button stores the settings.
Adjustment for different picture format
Make all adjustments with PAL signal unless otherwise
mentioned. First make all adjustments with normal 4:3
picture format. Then make the necessary adjustments
with other picture formats/signals. The required
adjustments are shown in the table below.
Note! Check the configuration of the TV set before
making the adjustments and make only the necessary
adjustments.
Making the service adjustment
1. Give a two numbered code which determines the
adjustment (e.g. 06 = width, see the following tables)
with the number buttons. You can also select the
adjustment with cursor buttons (up-/downwards).
Picture geometry adjustments
Adjustment
Vertical amplitude
Vertical off-centre shift
Vertical start scan
Vertical S-correction
Vertical slope (coarse)
Vertical slope (fine)
Width
Horizontal shift deflection
Horizontal phase video
Parabola
Corner
Trapezium
EHT compensation
2
C-bus
Code OSD name
00 V-AMPL. X X
01 V-SHIFT X
02 V-START X
03 S-CORR. X X
04 SLOPE-H X
05 SLOPE-L X
06 WIDTH X
07 H-SHIFT X
08 PHASE X
09 PARABOLA X X
10 CORNER X X
11 TRAPEZIUM X
12 EHT X
SERVICE
06 WIDTH
2. Adjust with cursor buttons (left/right).
SERVICE
06 WIDTH
3. Store the new value by pressing the OK button.
Note!
• To avoid incomplete adjustments store each
adjustment in the memory immediately after
adjusting.
• If the adjustment has to be made separately for
different picture format/signal, select the normal user
mode by pressing the TV button and select the desired
picture format/signal. Return to service mode by
pressing the i button.
Note!
Adjust also with NTSC signal.
Adjust also with NTSC signal.
Not in all sets.
X
Set brightness and contrast to 90% and
compensate the change in picture size.
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