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Follow the procedure below to set the G2:

1. Tune the set to the output of a signal generator (Cross-Hatch pattern).
2. In the user menu, set contrast to 80/100 and brightness to 40/100.
3. Connect the oscilloscope to the RED catode of cathode tube (pin 8 of CRT
    socket) and adjust G2 to read 150V on the sensor pulse as in figure 16.

Note:
Oscilloscope should be adjusted for vertical TV field trigger and synchronized with video signal.

Adjust the Vertical bow so that the picture is centred.
The effect of this adjustment is shown in figure 12.

• When the volume up button is pressed, the vertical bow changes to left.

• When the volume down button is pressed, the vertical bow changes to right.

• Press the stand-by button on the remote control to store.

Adjust the Vertical size so that 8% over-scan is achieved.
The effect of this adjustment is shown in figure 13.

• When the volume up button is pressed, the vertical size of the picture increases.

• When the volume down button is pressed, the vertical size of the picture decreases.

• Press the stand-by button on the remote control to store.

Adjust the Vertical S-correction so that the picture symmetrical between the top, centre and
bottom. The effect of this adjustment is shown in figure 14.

• When the volume up button is pressed, the top and bottom scanning decreases and the

centre scanning increases.

• When the volume down button is pressed the top and bottom scanning increases and the

centre scanning decreases.

• Press the stand-by button on the remote control to store.

Adjust the Vertical Shift so that the picture is centred.
The effect of this adjustment is shown in figure 15.

• When the volume up button is pressed, the picture moves up.

• When the volume down button is pressed, the picture moves down.

• Press the stand-by button on the remote control to store.

Figure 15

Figure 12

Figure 13

Figure 14

CH1 gnd

Figure 16

Follow the procedure below to set the G2:

1. Tune the set to the output of a signal generator (Cross-Hatch pattern).
2. In the user menu, set the picture levels to the FACTORY  settings (normalized)
3. Connect a DC voltimeter at the Red cathode (Pin 8 CRT socket) and adjust G2 to read 145V

DC (

±

5V).

The following adjustments should only be carried out when the CRT or IC850, IC851 and IC852 are replaced.

Do not change the Cut RED value (50%).

1. Adjust G2.
2. Tune a white pattern.
3. Adjust colour to minimum.
4. Position colorimeter in the centre of screen.
5. Adjust brightness and contrast to obtain a luminance of »20 NITS.
6.Operate in Service Mode and select location GREEN CUT OFF and  BLUE CUT OFF, to obtain colour
   coordinates:

                    X=0.290 ± 0.015       Y=0.284 ± 0.015

To increase press volume-up button and to decrease press volume down button.

BLUE CUT OFF

 alter «X» e  «Y»  coordinates.

GREEN CUT OFF  alter «Y» coordinate.

Press the Store button of Remote Control to store all values.

Do not change the Cut RED value (50%).

1. Adjust G2.
2. Tune a grey scale pattern.
3. Adjust colour to minimum.
4.Operate in Service Mode and select location GREEN CUT OFF and  BLUE CUT OFF.
5. Adjust these parameters until achieve a correct grey scale tracking.

To increase press volume-up button and to decrease press volume down button.
Press the Store button of Remote Control to store all values.

 1.  Tune a white pattern.
 2.  Adjust colour to minimum.
 3.  Position colorimeter in the centre of screen.
 4.  Adjust brightness and contrast to obtain a luminance of »20 NITS.
 5.  Operate in Service Mode and select location “Hot Cut RED”, “Hot Cut GREEN”  and “Hot Cut BLUE” by
      channel up/down buttons of the Remote Control.
 6.   Press volume up/down to adjust “Hot Cut RED”, “Hot Cut GREEN”  and “Hot Cut BLUE”  to obtain the colour
      limit coordinates (X/Y) for HOT picture variation.
 7.   Select location ”Cold Cut RED”, “Cold Cut GREEN”  and “Cold Cut BLUE” by channel up/down buttons of the
       Remote Control.
 8.   Press volume up/down to adjust “Cold Cut RED”, “Cold Cut GREEN”  and “Cold Cut BLUE”  to obtain the
      colour limit coordinates (X/Y) for COLD picture variation.
 9.   Press the Store button of Remote Control to store all adjustments.
10.  Turn off the receiver by Main switch to exit the Service Mode.

To correctly align the Automatic Gain Control, follow the procedure outlined below:

1. Tune the set into a pattern generator on  I-21.
2. Enter the Service Mode.
3. Press the YELLOW button of Remote Control to select  “Automatic Gain Control”
4. Press volume up/down to adjust to “109 dB/µV”.
5. It will be stored automatically.
6. Turn off the receiver by Main switch to exit the Service Mode.

1. Tune the colour bar signal pattern (Subcarrier PAL).
2.  Enter the Service Mode.
3.  Press channel up/down buttons of Remote Control to select “Subcarrier adjustment”.
4.  Press volume up/down buttons of Remote Control to adjust Subcarrier frequency until  “OK” appear on screen.
5.  Press Stand-by button of Remote Control to store adjust.
6.  Turn off the receiver by Main switch to exit the Service Mode.

To change the data contained within the Non Volatile Memory, it is necessary to first select the page the data is stored in,
then the position and finally to change the data itself.

NOTE: The values of  “Page, Position and Value” start by “0x”. It means that the two next locations are hexadecimal
            representations.
The procedure below outlines this process.

1. Enter the Service Mode.
2. Press the GREEN button of Remote Control to access to “NVM / PAGE”, use the volume up/down buttons to
    change this data (data is shown in hexadecimal format).
3. Press the channel up button to select “NVM / POSITION”, use the volume up/down buttons to change this data
   (data is shown in hexadecimal format).
4. Press the channel up button to select “NVM / VALUE”, use the volume up/down buttons to change this data (data
    is shown in hexadecimal format).
5. Once this data has been set, press the stand-by button to store.
6. If another NVM value has to be changed, use the channel down button to select the page or position and repeat
    as necessary.

Note:
Do not change any NVM data, unless you have been advised to do so by a Sharp representative.  If data is incorrectly
changed, serious damage may occur to the receiver.

To use this function to rewrite the NVM. It is only necessary when the software of Flash memory (IC6003) change .

1. Enter the Service Mode.
2. Press the Sound mode button(29) of Remote Control. “FLAG NVM WRITE ON”  is activated.
3. To exit the Service Mode, press the volume down and channel up buttons on the front of the receiver at the same
    time.
4. When “RE-WRITING NVM” appears on the screen, the receiver is now rewriting datas in NVM memory.
5. When the process finish the TV turns off and turn on automatically.
6. After rewriting NVM is necessary to adjust the TV set (Geometries, AGC, G2 and Colour Adjustments)

To use this function to activated  Autoinstall mode.

1. Enter the Service Mode.
2. Press MENU button of Remote Control to select “FLAG AUTOINSTALL ON”.
3. Turn off the receiver by Main switch.
4. Turn on the receiver by Main switch.
5. Now the receiver shows the Autoinstallation menu as shown in Figure 17.

To replace the NVM, follow the procedure outlined below:

In order to unlock the PostCode when password is not on mind, enter and exit the Service Mode.