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1.  Input a dot pattern.

2.  Set the PICTURE and BRIGHTNESS controls at minimum and 

COLOR control at normal.

3.  Adjust SBRT, GCUT, BCUT in service mode with an oscilloscope as 

shown below so that voltages on the red, green, and blue cathodes 
are 172 ± 2VDC.

Pedestal

172 – 2VDC

Ground

±

4.  Observe the screen and adjust SCREEN (G2) VR in FBT to obtain 

the faintly visible background of dot signal. 

If the setting indicated in Step 2 of Hold-Down Operation Confi rmation 
cannot be met, readjustment should be performed by altering the 
resistance value of R530, R531 component marked with X. 

 

3mA DC range

+

-

+

-

A

+

-

FBT

TP85

T503
FBT

TP85

R531 R530

DC Power Supply

digital multimeter

ammeter

 

 

Always perform the following adjustments when replacing the following 
components, which are marked with Y on the schematic diagram on the 
A Board:

  

A BOARD
IC600, PH602

Adjustment (Y)

1.  Using a Variac, apply AC input voltage: 130 + 2.0/-0.0 VAC

2.  Input a monoscope signal.

3.  Set the PICTURE control and the BRIGHT control to  

 

minimum.

4.  Confi rm the voltage on A Board between TP23 and ground is less 

than 136.5 VDC.

5.  If step 4 is not satisfi ed, replace R530 and R531 on A Board and 

repeat the above steps.  

3-1.  X R530, R531 CONFIRMATION METHOD 

The following adjustments should always be performed when replacing 
the following components which are marked with Y on the schematic 
diagram:

C531, C532, D519, D520,
D521, IC501, IC600, PH602,
R529, R530, R531, R532,
R533, R550, T503 (FBT),
T504 (DFT)

HV HOLD-DOWN
R530, R531

Part Replaced (Y)

Adjustment (X)

1.  Using a Variac, apply AC input voltage: 120 +/- 2.0 VAC.

2.  Turn the POWER switch ON.

3.  Input a white signal and set the PICTURE and BRIGHT controls to 

maximum.

4.  Confi rm that the voltage of more than 23.0 VDC appears between 

TP85 and ground on the A Board.

1.  Connect the current meter between Pin 11 of the FBT (T503) and the 

PWB land where Pin 11 would normally attach. (See Figure 1).

2.  Input a dot signal and set PICTURE and BRIGHTNESS to minimum: 

IABL = 2175 + 100/ -325 µA.

3.  Confi rm the voltage of A Board TP91 is 134.6 ± 1.0 VDC.

4.  Connect the digital voltmeter and the DC power supply to TP85 and 

ground. (See Figure 1).

5.  Increase the DC power voltage gradually until the picture blanks out.

6.  Turn DC power source off immediately.

7.  Read the digital voltmeter indication:  (standard = 27.24 + 0.0/ - 0.1 

VDC).

8.  Input a white signal and set PICTURE and BRIGHTNESS to 

maximum: IABL = 2175 + 100/ -325 µA.

9.  Repeat steps 4 to 7.

VOLUME (+)

(Service Mode)

ENT

(Enter into 
memory)

0

(Remove 
from 
memory)

3

(Adjust) 
Data up

5

(Display) 
Category 
down

MUTING

(Enter into 
memory)

1

(Display) 
Item up

2

(Display) 
Category up

4

(Display) 
Item down

8

(Initialize)

DISPLAY

(Service Mode)

POWER

(Service Mode)

6

(Adjust) 
Data down

Use the Remote Commander

 

(RM-Y194) 

to

 perform the circuit adjustments in this section.

Test Equipment Required:   1. Pattern generator   2. Frequency counter   3. Digital multimeter  4. Audio oscillator

1.  Standby mode (Power off).

2.  Press the following buttons on the remote commander within a 

second of each other: 

 

DISPLAY

  

 Channel  5      

 Sound Volume  +  

 

 POWER

 

The screen displays the fi rst service data device OSD item.

Signal
Type

Channel
Type

NTSC

VIDEO1

DEF

M6J586MK-050FP

F1.2

HSIZ

1:35                NVM:OK

Device

OSD

Item

Initial

Data

Value

1.  On the Remote Commander press  2  or  5  to select the device.

2. Press 1  or  4  to select the OSD.

3. Press 3  or  6  to change the data value.

4. Press MUTING  then  ENTER  to write into memory.

Signal
Type

Channel
Type

NTSC

WRITE

DEF

M6J586MK-050FP

F1.2

HSIZ

1:35                NVM:OK

Text 
changes to 
“WRITE” and 
changes 
colors from 
green to red

Device

OSD

Item

Initial

Data

Value

Use the following procedure when adjusting IDs 0-7 and when replacing 
and adjusting IC002.
1. Access Service Adjustment Mode.

2. Press 8  then  ENTER  on the Remote Commander to initialize.

Signal
Type

Channel
Type

NTSC

RESET

DEF

M6J586MK-050FP

F1.2

HSIZ

1:35                NVM:OK

Text 
changes to 
“RESET” 
and changes 
colors from 
green to red

Device

OSD

Item

Initial

Data

Value

The TV powers off after completing the initialization process.

1.  After completing adjustments, pull out the plug from the AC outlet, 

then replace the plug in the AC outlet again.

2. Access Service Adjustment Mode.

3.  Using the buttons on the Remote Commander, locate the adjusted 

OSD items again to confi rm they were adjusted.