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1

3

4

     Two screws

(BVTP 4 x 16)

     Cabinet

     Two claws

PUSH

PUSH

2

     Two audio jacks**

 **Caution: To avoid breakage, gently pull
sides of cabinet out and over the audio
jacks when removing cabinet from
chassis.

Cable bracket

     Cable stopper

     Five screws

(BVTP 3 x 12)

     D board

     One screw

(BVTT 4 x 8)

1

4

5

7

3

8

     A board

     Two screws

(BVTP 3 x 12)

6

     J board

2

1

2

3

A board

D board

 Turn up one side of the rubber cap in

the direction indicated by arrow 

.

 When one side of the rubber cap sepa-

rates from the anode button, the anode-
cap can be removed by turning the rub-
ber cap and pulling it in the direction of
arrow 

.

 Use your thumb to pull the rubber cap

firmly in the direction indicated by
arrow 

.

NOTE:   Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or carbon painted on the CRT, after
              removing the anode.

 Do not use sharp objects which may cause damage to the surface

of the anode-cap.

 Do not squeeze the rubber covering too hard to avoid damaging

the anode-cap. A material fitting called a shatter-hook terminal is
built into the rubber.

 Do not force turn the foot of the rubber cover. This may cause the

shatter-hook terminal to protrude and damage the rubber.

     Demagnetization coil

     Tension spring

     Stand assy

(D board)

     A board

     Neck assy

     Deflection yoke

     Four screws

(Tapping screw 5)

     Anode cap

Cushion

     Picture tube shield

     Two screws

(BVTP 4 x 16)

1

6

9

10

5

4

3

2

7

8

1) Using an external DC Power supply, apply the

voltage shown below between cathode of D517
o n     " D " Board and GND, and confirm that the
HV Hold-Down circuit works. (Raster disappears)

Apply DC Voltage: 31.4 + 0.01 VDC

Check Condition
• Input voltage

: 120 + 2 VAC

• Input signal

: (fH = 64 kHz), White Cross Hatch

• Controls

: CONT (max) &  BRT (center)

• B+ Voltage

: 185.0 + 3.0 VDC

1) Using an external DC power supply, apply the

voltage  8.8 + 0.01 VDC between pin  11  of FBT
(T501) and GND, and confirm that the voltage
across C541 is 3.7 VDC or less.

Check Condition
• Input voltage

: 120 + 2 VAC

• Input signal

: (fH = 64 kHz), White Cross Hatch

• Controls

: CONT (max) &  BRT (center)

1) Input white cross hatch (fH = 64 kHz) signal.
2) CONT (max) &  BRT (center)
3) Input voltage: 120 + 2 VAC

:  Use NF power supply or make sure that

distortion factor is 3% or less.

4) Confirm that the B+ voltage is within the voltage

range shown below.

Standard voltage: 185.0 + 3.0 VDC

              Part Replaced (

[)

                    

  RV501

              Part Replaced (

])

D - BOARD

     

 Allow the unit to warm up for one minute prior to

      checking the following conditions:

1) Input white cross hatch signal. (fH = 64 kHz)
2) Minimum CONT and BRT controls.
3) Cut off Screen VR (G2).
4) Input voltage: 120 + 2 VAC
5) Confirm that the voltage is within the voltage range

shown below.

                 Standard voltage: 25.0 + 0.5KVDC

6) When replacing components identified by 

], make

sure to recheck the High Voltage.

7) Verify the High Voltage as  shown above (25 + 0.5KVDC)

is within specification.    If not, set H. SIZE data at
minimum (-127) and then adjust RV501 on "D" Board.

8) After adjusting the High Voltage within specification,

put the RV cover on RV501 as shown below and apply
sufficient amount of RTV around RV501.

RV501, T501, R545, R546, R548, R550, R547, R549, R552,
D517, IC605, IC901, C540, C542, C544, C541, C535,
IC501, C558, R567, R564, C555, C553, C554, C561

    

    Set DY four-pole magnet to mechanical center
     before adjustment.
    This should be prime mode.

1.     Receive R.B. cross-hatch.
2      Adjust H.STAT and V.STAT at four-pole magnet.

1.   Enter the full white signal.
2.   Adjust the contrast to the maximum.
3.   Input full green signal.
4.   Moving the DY backward, and adjust coarsely the purity

magnet sothat a green raster positions in the center of
screen.

5.   Moving the DY forward, adjust so that an entire screen
      becomes pure green.
6.   Adjust the tilt of DY, and tighten lightly with a clamp.

1.   Place the set in the Helmholtz coil.
2.   Enter a green signal only.
3.   Degauss the entire screen with hand-degausser.  Then auto-
      degauss it.
4.   Attach a wobbling coil to the specified position of CRT
      neck.
5.   Attach a landing adjuster sensor on the CRT.
6.   Using a landing checker, adjust the DY position, purity,
      tilt  of DY.
7.   Clamp the DY screw.
                Clamping torque: 22 + 2 kgcm (2.2+ 0.2 N.m)

1.   Enter the white crosshatch signal.
2.   Adjust roughly the horizontal and vertical
      convergence at four-pole magnet.
3.   Adjust roughly HMC and VMC at six-pole
      magnet.

*The parts above (     ~     ) are necessary for DAS adjustment.

IBM AT Computer

as a Jig

1-690-391-21

1

A-1500-819-A
Interface Unit

2

3

D-sub
(9 Pin [female])

mini Din
(8Pin)

4 Pin

3-702-691-01
Connector Attachment

3

To BUS CONNECTOR

4 Pin

4 Pin

1

2

1

2

1

Set the
finger

Mechanical
Center

NECK Assy

6-pole Mg

P.S Mg

XBV

DY

CRT

4-pole Mg

Connect the communication cable of the connector located on the D board on the monitor. Run the service software and
then follow the instructions.

Allow a 30 minute warm-up period prior to making the following adjustments:

P.S. Mg