This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No. 09-995-333-9T1).
S/M Code No. 09-995-333-9R1
REVISION
DATA
SPECIFICATIONS
Category:Color television
TV Broadcasting System:NTSC-M
Channel Coverage:TV: 2 – 69
Cable (CATV): 5A, 2 – 13,A-5 – A-1,
A–W, W+1 – W+84 (A-8)
Number of Preset Channels 181
Aerial Input75 ohms, unbalanced
Picture Tube20” (510 mm)
Screen Size404 (W) x 303 (H) x mm (16 x 12 in.)
480 mm (diagonal) (19 in.)
Video Input/Output1 Vp-p, 75 ohms
Audio Input0.5 Vrms., 33 k ohms more
Audio Output0.5 Vrms., 2.2 k ohms less
Speaker76 mm (3 in.) round: 2
Operating Voltage110 – 240 V AC, 50/60 Hz
Power Consumption85 W
Earphone JackMini jack
Operating Temperature5°C – 40°C
Operatin Humidity35% – 80%
Dimensions520 (W) x 479.5 (D) x 425 (H) mm
(20 1/2 x 19 x 16 3/4 in.)
Weight18 kg (39.6 lbs.)
•Design and specifications are subject to change without notice.
To make the best use of this equipment, make sure to
obey the following items when repairing (or mending).
1. Do not damage or melt the tunicate of the leading
wire on the AC1 side, including the power supply
cord.
2. Do not soil or stain the letters on the spec.
inscription plates, notice labels, fuse labels, etc.
3. When repairing the part extracted from the
conducted side of the board pattern, fix it firmly
with applying bond to the pattern and the part.
4. Restore the following items after repairing.
1) Conditions of soldering of the wires (especially,
the distance on the AC1 side).
2) Conditions of wiring, bundling of wires, etc.
3) Types of the wries.
4) Attachment conditions of all types of the insulation.
5. After repairing, always measure the insulation
resistance and perform the voltage-withstand test
(See Fig-1).
1) The insulation resistance must be 7.0 to 9.5 MΩ
when applying
2) In the voltage withstand test, apply 3.6 KV for 3
seconds and check that the GO lamp lights.
500V per second.
3
DISASSEMBLY INSTRUCTIONS
1.HIGH-VOLTAGE CAP (ANODE CAP) REMOVAL
1-1. Cautions before Removing
Discharge the anode voltage
(1)The anode voltage is not discharged completely from
the CRT of this unit even after the power is turned off.
Be sure to discharge the residual anode voltage before
removing the anode cap.
Do not use pliers
(2)Do not use pliers, etc. to remove the anode cap. If you
used pliers and bent the hook to remove the cap, the spring
characteristics of the hook could be lost, and when
reinstalled, the cap would come off from the CRT anode
button easily, causing an accident.
Do not turn the anode cap
(3)If the anode cap is turned in the direction of its
circumference, the hook is likely to come off.
1-2. Anode Cap Removal
Discharge the anode voltage. (See Figure 1)
(1)Connect a flat-bladed screwdriver to the CRT GND via
an alligator clip.
(2)Use a tester to check the end of the screwdriver and
ground of the TV for continuity.
(3)Touch the hook with the end of the screwdriver.
Caution : Be careful not to damage the anode cap.
Anode cap
Grip
CRT GND
Hook
CRT GND
CRT
Fig. 1
Anode cap
(4)Turn over the anode cap.
Caution : Be careful not to damage the anode cap.
(5)Push the anode cap with your thumb in the direction of
arrow 1 as shown in the figure, then lift the cap in the
direction of arrow 2 to release the hook on one side.
(See Figure 3)
(6)Turn over the anode cap on the side where the hook
was released and pull out the cap in the direction
opposite to that on which the cap was pushed. (See
Figure 4)
Caution : Do not pull out the anode cap straight up.
: Do not pull the cap forcibly. After removing
the cap, check that the hook is not deformed.
CRT
CRT
Hook
1
Hook
Anode cap
Hook
Anode button
Fig. 2
2
1
CRT
Hook
Fig. 3
Anode cap
Pull out
CRT
Anode button
Fig. 4
4
2.ANODE CAP REINSTALLTION
Observe the cautions carefully so that no accident
occurs due to a defect in installing the anode cap and
so it does not come off.
2-1. Caution before Reinstalling
Never turn the anode cap after installing it
Never re-use the hook when it has been deformed
Left
Anode cap
Right
(1)If the anode cap is turned after it is installed, it may
come off. Therefore, arrange the high-voltage cable
before attaching the anode cap. (See Figure 1-1)
(2)If you have attached the anode cap before arranging
the high-voltage cable, arrange the cable carefully so
the cap does not turn.
2-2. Anode cap reinstallation
(1)Use a clean cloth moistened slightly with alcohol to
clean the installation section. (See Figure 2)
Caution : Check that the installation section is free
from dust, foreign matter, etc.
(2)Coat the anode cap installation circumference with an
appropriate amount of the specified silicone grease
(KS-650N). (See Figure 2)
Caution : Be careful that silicone grease does not
enter the anode button.
Fig. 1-1
Anode button
Installation
section
Fig. 2
(3)Eliminate twisting, etc. of the high-voltage cable and
arrange it so that no twisting occurs. (See Figure 3)
Caution : If the cable is not arranged correctly, the
anode cap could turn and cause an
installation defect.
High-voltage cable
Anode cap
Fig. 3
5
(4)Turn over the rubber cap symmetrically on the left and
right. (See Figure 4)
Caution : Take great care not to damage the anode cap.
(5)Fit your forefinger over the projection at the center of
the cap and hold the cap between your thumb and
middle finger. (See Figure 5-1)
(6)Apply the hook on one side to the anode button as
shown on the figure. (See Figure 5-2)
Caution : Check that the hook is held securely.
(7)Apply the hook on the other side to the anode button
as shown in Figure 5-3.
Fig. 4
Hook
Hook
Fig. 5
Anode button
Hook
30˚
Anode button
Anode button
Fig. 5-2
Fig. 5-3
6
(8)Pull the anode cap slightly with the rubber cap turned
over and visually check that the hook is engaged
securely.
(9)Release your hand from the rubber cap of the anode
cap.
Caution : Cover the anode cap so that it does not lift.
(10)Hold the skirt of the andoe cap slightly to improve the
close contact between the cap and CRT.
(11)Check that the anode cap is in close contact with the
CRT. (See Figure 6)
Anode cap
Skirt
Fig. 6
3.CASE REMOVAL
3-1. Rear Cabinet Removal (See Figure 1)
(1)Remove four screws 1 and three screws 2, then
remove the rear cabinet in the direction of the arrow.
3-2. Neck C.B. (PWB, NK) Removal
(See Figure 2)
1
1
2
2
2
1
1
Front cabinet
Rear cabinet
Fig. 1
Front cabinet
(1)Disconnect CN903 (CRT GND).
(2)Remove the Neck C.B. in the diection of arrow 1.
3-3. Main C.B. (PWB, MAIN) Removal
(See Figure 2)
(1)Remove connector (CN401).
(2)Remove connector (CN801).
(3)Pull out the Main C.B. in the direction of the direction
of arrow 2.
CN801
(Degauss
cord)
PWB, NK
7
1
CN903
2
PWB, MAIN
CN401
(Speakers)
ELECTRICAL MAIN PARTS LIST
REF. NOPART NO.KANRIDESCRIPTION
IC
87-JBC-629-010 IC,M37272M8-131SP
87-A90-297-010 RCR UNIT,SBX1981-52
87-A20-612-010 IC,AT93C46-10PI
87-A20-611-080 IC,M51943BSL-700A
87-A20-362-010 IC,LA7676 D
C825 87-A10-469-080 CAP,CER 2200P-500 K B DD10
CF201 84-LB3-627-010 FLTR,SFSF 4.5MDB SIF
CF202 84-LB3-626-010 FLTR,TPS4.5MB2
CN401 87-049-469-010 CONN,4P V
CN601 87-099-675-010 CONN,5P V V
!CN801 87-099-454-010 CONN,2P TV-50 EYLET
!CN802 87-099-674-010 CONN,2P VA V
D1 87-070-110-010 LED,SLP-181B-51
!F801 87-035-458-010 FUSE,4A 250V T W/C
FB801 87-003-320-080 F-BEAD,FBR07HA121NB