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15JF-25H (serv.man5)
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8
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198.87 KB
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Service Manual
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Device
TV / CTR / Service adjustments
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15jf-25h-sm5.pdf
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Sharp 15JF-25H (serv.man5) Service Manual ▷ View online

15JF-25H
10
 Geometry Adjustment Procedure
To adjust the geometry, follow the procedure outlined below:
1.   Tune the set into a Philips test pattern.
2.   Enter the Service Mode as described on page 6.
3.   Use the channel up or channel down buttons to enter the desired mode
4.   Use the volume buttons to achieve correct setting.
5.   When adjustments are complete, use the stand-by button to turn off the set.  The adjustment values will be
      stored at this point.
V-LIN
Adjust the vertical linearity control so that the picture centring is as shown in figure 5.
V-AMP
Adjust the vertical amplitude control so that the picture overscans as shown in figure 6.
V-CENT
Adjust the vertical centring control so that the picture is centred as shown in figure 7.
H-CENT
Adjust the horizontal centring control so that the picture is centred as shown in figure 8.
 
 
 
 
Figure 5
Figure 6
Figure 7
Figure 8
11
15JF-25H
Colour  Adjustment Procedure
The following adjustments should only be carried out when the CRT or IC801 are replaced.
Notes:
This adjustment must be done after warming up the unit for 30 minutes or longer with a beam current over 700
µA.
The red value «DRI-RS» should be fixed to 42. (Refer to “How to access Service Mode” section).
«DRI-GS» adjustment alters  “Y” co-ordinate.
«DRI-BS» adjustment alters  “X” and “Y” co-ordinates.
Adjustment Method 1 (using the signal generator, varying the picture signal)
1.  Adjust G2.
2. Input a white pattern with burst signal from SCART.
3. Position the colorimeter in the centre of screen.
4. Adjusting input signal level, select a luminance of 70 nits.
5. Operate again in “Service Mode“ and select «DRI-GS» and/or  «DRI-BS» locations to obtain colour co-ordinates:
6. Re-set the TV with the mains switch button to store the adjustment and exit Service Mode.
7. Check colour co-ordinates  “X” and “Y” at 20 a 120 Nits. It may be necessary to repeat the same procedure to
obtain the above values.
Adjustment Method 2 (using the signal generator, with a fixed picture signal)
1.   Adjust G2.
2. Tune a white pattern with burst signal.
3. Operate in “Service Mode”:
4. Using  «SUB-CON», select a luminance of 70 nits.
5. Operate again in “Service Mode“ and select «DRI-GS» and/or  «DRI-BS» locations to obtain colour co-ordinates:
6. Select  «SUB-CON». Return data to “63”.
7. Re-set the TV with the mains switch button to store the adjustment and exit Service Mode.
8. Check colour co-ordinates  “X” and “Y” at 20 a 120 Nits. It may be necessary to repeat the same procedure to
obtain the above values.
X
Y
Screen temperature
0.290 
±
 0.015
0.284 
±
 0.015
8900º K-20 MPCD
X
Y
Screen temperature
0.290 
±
 0.015
0.284 
±
 0.015
8900º K-20 MPCD
15JF-25H
12
Hotel Mode Functions
The following procedure details how to set up the Hotel Mode Functions.
1. Short Description
1.1. Hotel Mode “HTL”: Main Hotel Mode. It deactivates “Channel Setting” functions. It reduces the Maximum Volume.
1.2. Hotel Mode “HTL-VOL”: Maximum Volume Level Regulation.
1.3  Hotel Mode “HTL-PRG”: Fixing start up program when the TV set is switched on.
2. Before start
2.1. It is necessary to program “Channel Setting” before setting up Hotel Mode “HTL” because after that Channel
Setting are deactivated.
2.2. Consider that regarding TXT Features, after activate any of the Hotel modes in the “List Mode” will not be stored
any page.
2.3. Consider that changed video control values are not stored.
3. Procedure
3.1. Hotel Mode “HTL” (Main Hotel Mode).
3.1.1. Previous Service Information: Initial Value: 0. Range: 0 to 1. Service Mode Indication: HTL.
3.1.2. Access the Service Mode (see this procedure on page 6).
3.1.3. Select “HTL” by using channel up/down buttons.
3.1.4. Change initial value from “0” (off ) to “1” (on).
3.1.5. Notes:
       3.1.5.1. The maximum volume level has been reduced from 60 to 30. For other value go to 3.2. Hotel Mode
        “HTL-VOL”
       
       
       
       
       3.1.5.2. “Channel Setting” functions have been deactivated.
        3.1.5.3.  It is necessary to select Hotel Mode “HTL” to be able to set up Hotel Mode “HTL-VOL” or Hotel Mode
        “HTL-PRG”.
       3.1.5.4.  If you do not need to set up  Hotel Mode “HTL-VOL” or “HTL-PRG” get out from Service Mode (To
                       exit the Service Mode press the stand-by button on the remote control or turn the receiver off with
                         the mains switch).
3.2. Hotel Mode “HTL-VOL” (Maximum Volume Level Regulation)
3.2.1. Previous Service Information: Initial value: 30. Range: 0 to 60. Service Mode indication: HTL-VOL.
3.2.2. To activate this Hotel Mode it is necessary activate previously Hotel Mode “HTL”. Then the maximum volume
         level changed fro 60 to 30 as initial value.
13
15JF-25H
3.2.3. Select “HTL-VOL” by using channel up/down buttons.
3.2.4. Set the value according to your necessities by using volume up/down buttons.
3.2.5. Change initial value from “0” (off ) to “1” (on).
3.2.6. Note: If you do not need to set up  Hotel Mode  “HTL-PRG” get out from Service Mode (To exit the Service
                  Mode press the stand-by button on the remote control or turn the receiver off with the mains switch).
3.3. Hotel Mode “HTL-PRG” (Fixing start up program when the TV Set is switched on)
3.3.1. Initial value: 255. Range: 0 to 255. Service Mode indication: HTL-PRG.
3.3.2. To activate this Hotel Mode it is necessary activate previously Hotel Mode “HTL”.
3.3.4. Select “HTL-PRG” by using channel up/down buttons.
3.3.3. The initial value to 255, ensures that the TV Set starts up in the same program number that it was been
         displayed before turn it off.
3.3.4 If you want to fix other program number proceed as follows set the value according to your necessities by
        using  volume up / down buttons. Use values between 0 to 99. In this way, the new program number appear
         fixed when you start up the TV set.
Example: If you would like to set starting program number “2”, change from 255 to 2.
    3.3.5. Get out from Service Mode (To exit the Service Mode press the stand-by button on the remote control or turn
       the receiver off with the mains switch).
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