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– 49 –

(3) Screen-corner Convergence

Focus adjustment should be completed before W/B adjustment.

(1) Receive digital monoscope pattern.
(2) Set DRC-MF to “Progressive” and PICTURE to “Standard”.
(3) Adjust FOCUS VR so that the center of the screen becomes

justfocus.

(1) Receive dot/hatch pattern.
(2) Turn FOCUS VR fully counter-clockwise.
(3) Confirm the dot shape at the screen center. (Fig. 4-5)
(4) Resume FOCUS VR.

In case of turning NECK ASSY, loosen the screw 3 turns. Do not
move the position.

b

a

c

d

a-d : screen-corner
        misconvergence

Fix a Permalloy assy corresponding to the misconverged
areas.

a

b

c

d

Permalloy assembly

1) Set to zoom mode and the PICTURE and BRIGHTNESS to

normal and to the service mode.

2) In put monoscope signal.
3) Set the service data.  CXA2150P-210: ABLK10
4) Connect R, G and B of the C board cathode to the oscillo-

scope.

5) Adjust BRIGHTNESS to obtain the cathode voltage to the

value below.

6) Whilst watching the picture, adjust the screen VR (RV9002)

located on the C1 board to the point just before the flyback
return lines disappear (to the point before cut-off)

0 V

170V       (VDC)

+2
–1

 OK

 Turn NECK ASSY clockwise.

 Turn NECK ASSY counter clockwise.

FOCUS

– 50 –

1. Receive the signal.

TV terminal (main)

: Color-bar (white-75%, No

   setup)

VIDEO terminal (sub)

: Color-bar (white-75%, No

   setup)

2. VIDEO MODE

: AV Pro

PICTURE

: maximum

COLOR

: minimum

RGB Signal

: off

3. Set to P & P mode, and set to service mode.

4. Set the service data.

2150P-2

1: RGBS

4

2150P-4

0: UPIC

53

5. Connect an oscilloscope between the check point and ground.

Check points

: CN5 pin 6 (G)

(A Board)

6. Select “ 2103-1-02 ”(Main scon), and adjust so that the wave-

form level of VWB is 1.69 

± 0.07Vp-p.

7. Select “ 2103-2-02 ”(Sub scon), and adjust so that the wave-

form level of VWB is 1.69 

± 0.07Vp-p.

White

VR1

VR1-VR2=VR

VR2

Pedestal

1. Receive the signal.

TV terminal (sub) : Color-bar (white-75%, No

   setup)

VIDEO terminal (main)  : Color-bar (white-75%, No

   setup)

2. VIDEO MODE

: AV Pro

PICTURE

: maximum

COLOR

: minimum

RGB Signal

: off

3. Set to P & P mode, and set to service mode.

4. Set the service data.

2150P-2

1: RGBS

4

2150P-4

0: UPIC

53

 5. Connect an oscilloscope between the check point and ground.

Check points

: CN202 pin 3 (G-DRV)

(A1 Board)

6. Select “ 2103-1-02 ”(Main scon), and adjust so that the wave-

form level of VWB is 1.69 

± 0.07Vp-p.

7. Select “ 2103-2-02 ”(Sub scon), and adjust so that the wave-

form level of VWB is 1.69 

± 0.07Vp-p.

8. Write the data into memory.

                   

n

White

VR1

VR1-VR2=VR

VR2

Pedestal

1. Receive the signal.

TV terminal (sub) : Color-bar (white-75%, No

   setup)

VIDEO terminal (main) : Color-bar (white-75%, No

   setup)

2. VIDEO MODE

: AV Pro

PICTURE

: maximum

COLOR

: center

RGB Signal

: on

3. Set to P & P mode, set to service mode.
4. Connect an oscilloscope between pin  5 (B-DRV)  of CN202

(A board) connecter and ground.

5. Select “ 2103-1-03 SCOL, -04 SHUE ”(Main), and adjust

them to have VB1    VB4 and VB2    VB3 in the waveform
levels.

6. Select “ 2103-2-03 SCOL, -04 SHUE ”(Sub), and adjust them

to have VB1    VB4 and VB2    VB3 in the waveform levels.

7. Write the data into memory.
                         

n

VB1      VB2     VB3     VB4

<

=

<

=

<

=

<

=

1. Receive the signal.

TV terminal (main)

: Color-bar (white-75%, No

   setup)

VIDEO terminal (sub)

: Color-bar (white-75%, No

   setup)

2. VIDEO MODE

: AV Pro

PICTURE

: maximum

COLOR

: center

RGB Signal

: on

3. Set to P & P mode, set to service mode.

                   

n

8. Write the data into memory.

MUTING   

n   ENTER

– 51 –

VB1      VB2     VB3     VB4

<

=

<

=

<

=

<

=

4. Set the service data.

2150P-2

1: RGBS

7

2150P-4

0: UPIC

40

5. Connect an oscilloscope between pin  7 (B)  of CN5 (A board)

connecter and ground.

6. Select “ 2103-1-03 SCOL, -04 SHUE ”(Main), and adjust

them to have VB1    VB4 and VB2    VB3 in the waveform
levels.

7. Select “ 2103-2-03 SCOL, -04 SHUE ”(Sub), and adjust them

to have VB1    VB4 and VB2    VB3 in the waveform levels.

8. Write the data into memory.

       

n

Focus adjustment should be completed before W/B adjustment.

(1) Receive digital monoscope pattern.
(2) Set DRC-MF to “Progressive” and PICTURE to “Standard”.
(3) Adjust FOCUS VR so that the center of the screen becomes

justfocus.

(4) Change the receiving signal to white pattern and blue back.
(5) Confirm MAGENTA RING should not be over the limit sam-

ple. In case MAGENTA RING is over the limit sample,
adjust FOCUS VR to take tracking of MAGENTA RING and
FO-CUS.

FOCUS

(1).VIDEO MODE : AV PRO

PICTURE : Maximum
COLOR

: Minimum

Color Temp.: High
DRC-MF

: Progressive

(2). Receive the all white signal and set to full mode screen and

to the service mode.

(3). Minimize the cut-offs and make drives normal in the follow-

ing items.
2150P-1 “6 GDRV”

  “7 BDRV”
  “9: GCUT”
  “10: BCUT”

(4). Adjust with the cut-offs and the drives mutually the white

balance becomes best in the mode the picture is maximum or
minimum.

(5). Sub bright adjustment
•

Receive the monoscope signal under the condition PICTURE:
Minimum, Brightness: Center, Color Temp.: High.

•

Adjust “2150P-1 10: BRTL” so that the monoscope pattern
0IRE is just cut off and copy its data -1step to “2150P-1 17:
BRTL”.

In this adjustment use the monoscope signal.

    Adjust in the service mode “2150D-1” and “2150D-2”.

1 (VPOS)-2150D-1

2 (VSIZ)-2150D-1

3 (VLIN)-2150D-1

4 (VSCO)-2150D-1

5 (HSIZ)-2150D-2

6 (HPOS)-2150D-2

7 (PIN)-2150D-2

8 (UCP)-2150D-2

9 (LCP)-2150D-2

10 (PPHA)-2150D-2

11 (VANG)-2150D-2

12 (VBOW)-2150D-2

13 (ASPT)-2150D-1

14 (SCRL)-2150D-1

15 (LVLN)-2150D-1

16 (UVLN)-2150D-1

– 52 –

When replacing the following components marked with 

 on

the schematic diagram always check hold-down voltage and if
necessary re-adjust.

: RV8001
: IC8001

R8028, R8078
T8001 (FBT)
D6 board

HV HOLD-DOWN ADJUSTMENT

1. Connect a HV static voltmeter to the unconnected plug of the high-

voltage block.

2. Power on the set.

3. Receive the dot signal.

4. Set PIC MIN/BRT MIN.

5.Turn RV8001 counterclockwise.

6. Adjust RV8002 to the 34.30 

± 0.3kVDC reading on the static

   voltmeter.

7. After adjustment, turn RV8001 and RV8003 clockwise slowly, and

stop if the HV.PROT circuit works.

When replacing the f

ollowing components marked with 

 on the

schematic diagram always check HV regulation, and if neces-
sary re-adjust.

: RV8002
: C8037

IC8002, IC8004
R8072, R8091, R8095,
PH8001
T8001 (FBT)
D6 board

HV REGULATION ADJUSTMENT

1. Connect a HV static voltmeter to the unconnected plug of the high-

voltage block.

2. Power on the set.

3. Receive the dot signal.

4. Set PIC MIN/BRT MIN.

5. Confirm that the static voltmeter reading is 30.5 

± 0.5kVDC.

6. If not, adjust with RV8002 to the specified value.

1. Supply 242 

±   VAC  to variable autotransformer.

2. Receive dot signal pattern and set the PICTURE and

BRIGHTNESS settings to their minimum.

3. Confirm the voltage of CN5509 Pin  9  is 136.3V dc or less.

When replacing the following components marked with / on the

schematic diagram, always check IK protector circuit.

:

IC8001
Q8007
R8016, R8027, R8030, R8035, R8036, R8037,
R8038, R8039, R8040, R8041
D6 board

1. Unsolder T8001 (FBT) Pin 1 and connect a DC current meter

between Pin 1 and the pattern.

2. Remove a lead wire connected to CN201 Pin 1 on A1 board

and apply 12VDC to A6 board side from an external DC
power supply.

3. Short circuit C8015.
4. Turn power on, feed the dot signal and set the picture and

brightness to minimum.

5. Feed the all white signal, increase the picture and brightness

slowly and check the hold-down works when the reading on
the DC current meter is 2275uA.

6. Turn power off.
7. Release C8015 short-circuit.
8. Short circuit C8012.
9. Turn power on, feed the dot signal and set the picture and

brightness to minimum.

10. Feed the all white signal, increase the picture and brightness

slowly and check the hold-down works when the reading on
the DC current meter is 2275uA.

11. Turn power off.
12. Release C8012 short-circuit.
13. Remove the DC current meter and the external DC power

supply and solder the unsolder portions.

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