32JF-74H
ADJUSTMENT PROCEDURES
All adjustments to this chassis, except for focus, are carried out in the Service Mode.
Service Mode
The Service Mode is provided to enable the engineer to correctly set up the receiver to the CRT fitted in the set.
Note that these adjustments may vary from one receiver to another.
To enter the Service Mode, carry out the following procedure.
1. Connect a test pattern to the antenna terminal.
2. Tune the receiver to this signal.
3. Turn the receiver off using the mains switch.
4. Press volume down and channel up buttons on the
front of the receiver at the same time.
5. Keeping these buttons pressed, turn the mains on.4
6. When the set starts up it will be in Service Mode.5
7. Release the two buttons.Figure 1
""""" Use the channel up and down buttons to move between the options.
""""" Use the volume control buttons to change the data.
""""" To store the data, use the stand-by button on the remote control.
""""" To exit the Service Mode, turn the receiver off using the mains switch.
When the Service Mode is entered the following On Screen Display appears
SERVICE SOFTWARE -x
SW on: XXXX SW off: XXXX Hours ON: XXXX
The figures displayed in the ?XXXX? locations are hexadecimal representations of the number of times that particular
function has been executed. For example if the hexadecimal number displayed after ?SW on? was 0E4A, this would
correspond to the receiver being turned on 3658 times.
The figure displayed in the ? -x ? location is the EPROM version.
X
Adjustment menu:
The following adjustments can be carried out in the Service Mode.
" Horizontal Shift" Red Cut Off
" East West Width" Green Cut Off
" Pin Phase" Blue Cut Off
" Pin Amp (Amplitude)" Alter NVM Pag (Page)
" Corner Amplitude" Alter NVM Pos (Position)
" Corner Symmetry" Alter NVM Val (Value)
" Vertical Linearity" Teletext Mix Mode Contrast
" Vertical Angle" Teletext Contrast
" Vertical Bow" OSD Contrast
" Vertical Amplitude" DVCO Adjustment (Only PAL)
" S Correction" DVCO Adjustment (Only NTSC)
" Vertical Shift" AGC Adjustment
" Red Gain" Rotation Inspection
" Green Gain" Auto Installation On/Off
" Blue Gain
Note that the receiver should be set to FULL MODE before carrying out any geometry adjustments. This can be achieved
by pressing the widescreen mode button on the remote control until FULL MODE appears on the OSD. This can only be
done out of the Service Mode.
The following geometry adjustments can be carried out. Detailed instructions on how to execute these are given on the
following pages.
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ACEC
