AKAI TV2851
Service Manual

9

Remote control buttons in service mode When the receiver is in the service mode you can select 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 adjustments. The OK button stores the settings. The yellow button hides/shows the service menu to simplify the picture adjustments. Making adjustments for different picture formats Make all adjustments with PAL signal unless otherwise mentioned. Make 4:3 set adjustments with normal 4:3(CLASSIC) picture format and 16:9 set adjustments with wide 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 TVset before making the adjustments and make only the necessary adjustments. 3. Store the new value by pressing the OK button. Making a service adjustment 1. Give a two digit code which determines an adjustment (e.g. 00 = vertical shift, see the following tables) with the number buttons. You can also select the adjustment with cursor buttons (up-/down). Note! Power supply and UG2 adjustments before picture geometry adjustments. must be done Note! To avoid incomplete adjustments store each adjustment in the memory immediately after an adjustment has been made. If an adjustment has to be made separately for different picture format/signal, select first the normal mode by pressing the TV button and select then the desired picture format/signal. Return to service mode by pressing the i button.
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2. Adjust with the cursor buttons (left/right).

Picture

geometry

adjustments

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4djustment Jertical off-centre Jertical Jertical Vertical Vertical Vertical Width Horizontal Parabola Corner Trapezium shift deflection amplitude slope S-correction zoom scrolling shift

:ode 00 01 02 03 04 05 06 07 08 09 - 10

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name

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Note! Center line upper lower side part

V-SHIFT V-AMPL. V SLOPE S-cot?!?. VER ZOOM v SCROLL WIDTH H-SHIFT PARABOLA CORNER TRAPEZ

X X X X

K Adjust Adjust

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IX (X

Recommended Recommended

to use init value to use init value

first first

X X X
X X

X X
X X -X

X

X

X

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