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1.  Input a color-bar signal.

2.  Set to Service Adjustment Mode.

3. Press 2  or  5  to select the MICRO Category.

4. Press 1  or  4  to select DISP.

5.  Adjust values of DISP by pressing  3  or  6  to adjust characters to the 

center.

6. Press MUTING  then  ENT  to write into the memory.

7.  Check to see if the text is displayed on the screen.

1.  Input a monoscope signal.

2.  Access the Service Adjustment Mode.

3. Press 2  or  5  to select the VP1 Category

4.  Set the PICTURE and BRIGHTNESS to minimum.

5. Press 1  or  4  to select SBRT.

6. Adjust the values of SBRT with  3  or  6  to obtain a faintly visible 

crosshatch.

7. Press MUTING  then  ENT  to write into the memory.

1.  Input color-bar signal at 75%.

2.  Access the Service Adjustment Mode.

3.  Set (PIC) to Max and (COL) to 50%. 

4.  Connect an oscilloscope probe to CV Board, CN301Pin  4  Blue Out. 

5. Press 2  or  5  to select the VP1 Category.

6. Press 1  or  4  to select SHUE.

7.  While showing the SHUE item, adjust the waveform with  3  or  6  until 

the second and third bars show the same level 
(V2 = V3 < 0.15Vp-p). Set Sub Hue -2 Step.  

8. Press 1  or  4  to select SCOL.

9.  While showing the SCOL item, adjust the waveform with  3  or  6  until 

the fi rst and fourth bars show the same level 
(V1 = V4 < 0.15Vp-p).  Set Sub Col +3 Step.

V1 V2 V3 V4

10. Press  MUTING  then  ENT  to write into the memory.

1.  Input a TV mode (RF) with no signal.

2.  Connect a frequency counter to base of Q502 

(TP-25 H. DRIVE) on the A Board.

3.  Check H. Frequency for 15735 ± 200 Hz.

1.  Select video 1 with no signal input.

2.  Set the conditions for a standard setting.

3.  Connect the frequency counter to TP-27 (V OUT) or CN515 pin  6

(V DY+) and ground on the A Board .

4.  Check that V. Frequency shows 60 ± 4 Hz.

1.  Input a color-bar signal and set the level to 75%.

2.  Set in Pro mode + PICTURE MAX.

3.  Access the Service Adjustment Mode.

Category

Display

Item

Display

Data

Signal
Type

Channel
Type

NTSC

VIDEO1

DEF 

M655E2AMF-107FP

S 3.OD

HSIZ

1 :  51

NVM:OK

 R 

ON: 

ON 

(1)

 G 

ON: 

OFF 

(0)

 B 

ON: 

OFF 

(0)

4.  Connect an oscilloscope probe to CV Board, 

J1751Pin 12 (KR) (Red Out) .

5. Press 2  or  5  to select the 16:09 Category.

6. Press 1  or  4  to select SCON.

7. Press 3  or  6  to adjust the data value for SCON to 86 ± 3Vpp.

76 

±

 3Vpp for 21 inch

 R 

ON: 

ON 

(1)

 G 

ON: 

ON 

(1)

 B 

ON: 

ON 

(1)

8. Press MUTING  then  ENT  to write into the memory.

1.  Input a crosshatch signal.
2.  Access the Service Adjustment Mode.
3.  Press  2 or  5 to select the DEF Category.
4.  Press  1 or  4 to select VSIZ.
5.  Adjust value of VPOS with  3 or  6 for the best vertical center.
6.  Press  MUTING  then  ENT  to write into the memory.

Perform this adjustment after performing H. Frequency 

(Free Run) Check.

1.  Input a crosshatch signal.
2.  Access the Service Adjustment Mode.
3.  Press  2 or  5 to select the DEF Category.
4.  Press  1 or  4 to select VPOS.
5.  Adjust value of VPOS with  3 or  6 for the best vertical center.
6.  Press  MUTING  then  ENT  to write into the memory.

Perform this adjustment after performing H. Frequency 

(Free Run) Check.

1.  Input a crosshatch signal.
2.  Access the Service Adjustment Mode.
3.  Press  2 or  5 to select the DEF Category.
4.  Press  1 or  4 to select HPOS.
5.  Adjust the value of HPOS with  3 or  6 for the best horizontal center.
6.  Press  MUTING  then  ENT  to write into the memory.

1.  Input a monoscope signal.
2.  Access the Service Adjustment Mode.
3.  Press  2 or  5 to select the DEF Category.
4.  Press  1 or  4 to select HSIZ.
5.  Adjust with  3 or  6 for the best horizontal size.
6.  Press  MUTING  then  ENT  to write into the memory.

1.  Input a crosshatch signal.
2.  Access the Service Adjustment Mode.
3.  Press  2 or  5 to select the 16:09 Category.
4.  Press  1 or  4 to select VLIN, SCOR, PAMP, or TRAP.
5.  Adjust with  3 or  6 for the best horizontal size.
6.  Press  MUTING  then  ENT  to write into the memory.

V LINEARITY (VLIN)

V CORRECTION (SCOR)

PIN AMP (PAMP)

VERTICAL TRAPEZOID (TRAP)

1.  Input a crosshatch signal.

2.  Access the Service Adjustment Mode.

3. Press 2  or  5  to select the DEF Category.

4. Press 1  or  4  to select VBOW, VANG, UPIN, or LPIN.

5. Adjust with 3  or  6  for the best picture.

6. Press MUTING  then  ENT  to write into the memory.

V ANGLE (VANG)

V BOW (VBOW)

UPPER PIN (UPIN)

LOW PIN (LPIN)

1. Access Service Adjustment Mode.

2.  After completing all adjustments, press  0  then  ENT .

Category

Display

Item

Display

Data

Signal
Type

Channel
Type

Text changes 
to “READ” 
and changes 
from green to red

NTSC

READ

DEF 

M655E2AMF-107FP

S 3.OD

HSIZ

1 :  51

A Board

CV Board

KR Board

HK Board

The components identifi ed by X in this basic schematic 
diagram have been carefully factory-selected for each set in 
order to satisfy regulations regarding X-ray radiation. Should 
replacement be necessary, replace only with the value 
originally used.

!

!

All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less 
are not indicated except for electrolytics and tantalums.

All electrolytics are in 50V unless otherwise specifi ed.

All resistors are in ohms.  k=1000, M=1000k

Indication of resistance, which does not have one for rating electrical 
power, is as follows:    Pitch : 5mm    Rating electrical power : 

1

/

 4 

W in resistance, 

1

/

10 

W and 

1

/

 8 

W in chip resistance.

: nonfl ammable resistor.

 : fusible resistor.

 : internal component.

 : panel designation and adjustment for repair.

 : earth ground

 : earth-chassis

All variable and adjustable resistors have characteristic curve B, unless 
otherwise noted.

Readings are taken with a color-bar signal input.

Readings are taken with a 10M digital multimeter.

Voltages are DC with respect to ground unless otherwise noted.

Voltage variations may be noted due to normal production tolerances.

All voltages are in V.

S : Measurement impossibillity.

: B+line.

: B-line.  (Actual measured value may be different).

: signal path. (RF)

Circled numbers are waveform references.

When replacing components identifi ed by Y, make the necessary 
adjustments as indicated.  If the results do not meet the specifi ed value, 
change the component identifi ed by X and repeat the adjustment until 
the specifi ed value is achieved. 
 (Refer to Section 3: Safety Related Adjustments on Page 21.)

When replacing the parts listed in the table below, it is important to 
perform the related adjustments.

DY, T585, CRT, IC001, IC561,
IC600, C506, C507, C508, T511,
L510, C588, L588, C566, C561,
C563, D567, D568, D566, PH602,
R567, R568, R565, R566, R562,
R563, R561, R528……....A Board

HV HOLD-DOWN
R565

Part Replaced (Y)

Adjustment (X)