Panasonic CT-20G7DF, TC-20G7, CT-20D12DF Schematic

ORDER NO. MT NC020515A1
B1

Service Manual

Color Television

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Simplified Manual

(NA7DM)

Panasonic

Models

CT-20G7DF AP391
CT-20D12DF BP391

This supplement service manual is issued to add the modelss of the NA7DM family listed above to the main service
manual order No. MTNC010305C1 (CT-20D11E). Included in this supplement service manual are unique
characteristics and a complete parts list. Please file and use this simplified service manual together with main service
manual order No. MTNC010305C1

Chassis

“WARNING! This ServiceManualis designed forexperiencedrepairtechnicians only and is not designedfor use bythe general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Productspowered byelectricityshouldbeservicedorrepairedonlybyexperiencedprofessionaltechnicians.Anyattempttoservice
or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death.”

The service technician is requiredtoreadand follow the “safety precautions”and“important safety notice” in this main manual.

Copyright2002by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.

Important safety notice

Special components are used in this television set which are important for safety. These parts are identified on the
schematic diagram by the symbol and printed in BOLD TYPE on the replacement part list. It is essential that
these critical parts are replaced with the manufacturer’s specified replacement part to prevent X-ray radiation,

shock, fire or other hazards. Do not modify the original design without the manufacturer’s permission.

Safety precautions

General guidelines

AnIsolationTransformershouldalwaysbe usedduring
the servicing of a receiver whose chassis is not
isolated from AC power line. Use a transformer of
adequate power rating as this protects the technician
from accidents resulting in personal injury from
electrical shocks. It will also protect the receiver from
being damaged by accidental shorting that may occur
during servicing.
When servicing, observe the original lead dress,
especially in the high voltage circuit. Replace all
damaged parts (also parts that show signs of
overheating.)
Always replace protective devices,suchas
fishpaper, isolation resistors and capacitors, and
shields after servicing the receiver. Use only
manufacturer’s recommended rating for fuses, circuits
breakers, etc.
High potentials are present when this receiver is
operating. Operation of the receiver without the rear
cover introduces danger for electrical shock. Servicing
should not be performed by anyone who is not
thoroughly familiar with the necessary precautions
when servicing high-voltage equipment.

Extreme care should be practiced when handling the
picture tube. Rough handling may cause it to implode

due to atmospheric pressure. (14.7 lbs per sq. in.). Do
not nick or scratch the glass or subject it to any undue
pressure. When handling, use safety goggles and
heavygloves forprotection.Discharge the picture tube
by shorting the anode to chassis ground (not to the
cabinet or to other mounting hardware). When
discharging connect cold ground (i.e. dag ground lead)
to the anode with a well insulated wire or use a
grounding probe.
Avoid prolonged exposure at close range to unshielded
areas of the picture tube to prevent exposure to
X-ray radiation.
The test picture tube used for servicing the chassis at
the bench should incorporate safety glass and
magnetic shielding. The safety glass provide shielding
for the tube viewing area against X-ray radiation as
well as implosion. The magnetic shield limits the X-ray
radiation around the bell of the picture tube in addition
to the restricting magnetic effects. When using a
picture tube test jig for service, ensure that the jig is
capable of handling 35kV without causing
X-ray radiation.
Beforereturning a servicedreceiver totheowner,the
service technician must thoroughly test the unit to
ensure that is completely safe to operate. Do not use a

line isolation transformer when testing.

Leakage current cold check

Unplug the AC cord and connecta jumper between the
two plug prongs.
Measure the resistance between the jumpered AC plug
and expose metallic parts such as screwheads,
antenna terminals, control shafts, etc.

If the exposed metallic part has a return path to the
chassis, the reading should be between 240kΩ and

5.2MΩ. If the exposed metallic part does not have a
return path to the chassis, the reading should be
infinite.

Leakage current hot check (Fig. 1)

Plug the AC cord directly into the AC outlet. Do not use
an isolation transformer during the check.
Connect a 1.5kΩ 10 watt resistor in parallel with a

0.15µF capacitor between an exposed metallic part
and ground. Use earth ground, for example a
water pipe.
Using a DVM with a 1000 ohms/volt sensitivity or
higher, measure the AC potential across the resistor.
Repeat the procedure and measure the voltage
present with all other exposed metallic parts.
Verify that any potential does not exceed 0.75 volt
RMS. A leakage current tester (such a Simpson model
229, Sencore model PR57 or equivalent) may be used
in the above procedure, in which case any current
measure must not exceed 0.5 milliamp. If any
measurement is out of the specified limits, there is a
possibility of a shock hazard and the receiver must be
repaired and rechecked before it is returned to the
customer.

AC VOLTMETER

COLD
WATER
PIPE
(GROUND)

0.15µF

TO
INSTRUMENT’S
EXPOSED METAL
PARTS

1500Ω,10 W

Figure 1. Hot check circuit

X-ray radiation

WARNING: The potential source of X-ray radiation in the

TV set are the High Voltagesection and the picture tube.
Refer to X-RAY protecton circuit check in service
notes in this manual to confirm HHS voltage.

High voltage (crt anode)

Confirm Anode voltage is within limits:
Set the BRIGHTNESS, PICTURE, SHARPNESS and
COLOR to minimum (To obtaina dark image). Measure
high voltage. It should be:

26.60

± 1.25kV.

If the upper limit is out of tolerance, immediate service
and correction is required.

Note: It is important to use an accurate, calibrated
high voltage meter.

-2-

Importantsafetynotice................... 2

Safetyprecautions................. 2

Generalguidelines................. 2

Leakage current cold check . . . . . . . . . . 2

Leakage current hot check . . . . . . . . . . . 2

X-rayradiation.................... 2

Highvoltage(crtanode)............. 2

Servicenotes........................... 4

Leadless chip component

(surfacemount)................ 4

Componentremoval................ 4

Chip component Installation . . . . . . . . . . 4

HowtoreplaceFlat-IC.............. 4

X-rayprotectioncircuitcheck......... 5

Receiverfeaturetable.................... 6

Chasis service adjustment procedures. . . . . . 7

130.0V B+ voltage confirmation . . . . . . . 7

Sourcevoltagechart................ 7

Highvoltagecheck................. 7

Audiosignalpathblockdiagram........... 8

Videosignalpathblockdiagram........... 9

Partslist.............................. 10

Foldouts, voltages & waveforms . . . . . . . 18~31

-3-

Service notes

Note: These components are affixed with glue. Be careful not to break or damage any foil under the

component or at the pins of the ICs when removing. Usually applying heat to the component for a short time
while twisting with tweezers will break the component loose.

Leadless chip component
(surface mount)

Chip components must be replaced with identical chips
due to critical foil track spacing. There are no holes in
the board to mount standard transistors or diodes.
Some chips capacitor or resistor board solder pads
may have holes through the board, however the hole
diameter limits standard resistor replacement to 1/8
watt. Standard capacitor may also be limited for the
same reason. It is recommended that identical
components be used.
Chip resistor have a three digit numerical resistance
code - 1st and 2nd significant digits and a multiplier.
Example: 162 = 1600 or 1.6kΩ resistor, 0 = 0Ω (jumper).
Chip capacitors generally do not have the value
indicated on the capacitor. The color of the component
indicates the general range of the capacitance.
Chip transistors are identified by a two letter code. The
first letter indicates the type and the second letter, the
grade of transistor.
Chip diodes have a two letter identification code as per
the code chart and are a dual diode pack with either
common anode or common cathode. Check the parts
list for correct diode number.

Component removal

1. Use solder wick to remove solder from component
end caps or terminal.

2. Without pulling up, carefully twist the component
with tweezers to break the adhesive.

3. Do not reuse removed leadless or chip
components since they are subject to stress
fracture during removal.

Chip component Installation

1. Put a small amount of solder on the board
soldering pads.

2. Hold the chip component against the soldering
pads with tweezers or with a miniature alligator clip
and apply heat to the pad area with a 30 watt iron
until solder flows. Do not apply heat for more than
3 seconds.

TYPE

b

e

ANODES

MH DIODE

Chip components

GRADE

c

TRANSISTOR

COMMON
CATHODE

SOLDER
CAPS

CAPACITOR

1ST DIGIT

RESISTOR

SOLDER
CAPS

2ND DIGIT

MULTIPLIER
=1600 = 1.6k

How to replace Flat-IC

- Required tools -

• Soldering iron • De-solder braids

• Sharpen pliers (wire
cutters and long nose)

1. Cut the pins ofthe defective IC with the wire cutters
pliers, and remove it completely away from the
board. If the IC is glued to the board, apply hot air
to complete the removal. CAUTION- Do not pull or
twist the pliers, may damage the soldering pads in
the board.

Flat-IC

2. Using the soldering Iron and the long nose pliers,
remove the IC pins that still attached to the board.

3. Using the de-solder braid and the soldering iron,
remove the solder from the board soldering pads.

4. Position the new Flat-IC in place (apply the pins of
the Flat-IC to the soldering pads where the pins
need to be soldered). Properly determine the
positions of the soldering pads and pins by
correctly aligning the polarity symbol. Start aligning
and soldering pin no.1, then align and solder the
pin in the apposite corner of the IC, this will help to
align the rest of the pins.

Polarity
symbol

5. Solder all pins to the soldering pads using a fine
tipped soldering iron.

Solder

6. Check with a magnifier for solder bridge between
the pins or for dry joint between pins and soldering
pads. To remove a solder bridge, use a de-solder
braid as shown in the figure below.

Solder
bridge

-4-

• Magnifier

Soldering
iron

De-Solder
braid

Soldering
iron

Soldering
iron

De-Solder
braid

Soldering

iron

Service notes (continued)

IMPORTANT: To protect against possible damage to

the solid state devices due to arcing or static discharge,
make certain that all ground wires and CTR DAG wire
are securely connected.

CAUTION: The power supply circuit is above earth
ground and the chassis cannot be polarized. Use an
isolation transformer when servicing the receiver to
avoid damage to the test equipment or to the chassis.
Connect the test equipment to the proper ground ( ) or

( ) when servicing, or incorrect voltages will be
measured.

Procedure:

1. Connect receiver to isolator transformer.

2. Apply a monoscope pattern.

3. In service mode. (Refer to service mode section)
select register C0b.

4. Measure TP5 (TPs port close to tuner). Compare
the measure of TP5 and set the data for C0b
according the following table

TP5

MEASURE (V)

DATA TO

C0b (Hex)

WARNING: This receiver has been designed to meet
or exceed applicable safety and x-ray radiation
protection as specified by government agencies and
independent testing laboratories.

To maintain original product safety design standards
relative to x-ray radiation and shock and fire hazard,

parts indicated with the symbol on the schematic
must be replaced with identical parts. Order parts from
the manufacturer’s parts center using the parts
numbers shown in this service manual, or provide the
chassis number and the part reference number.

For optimum performance and reliability, all other parts
should be replaced with components of
identical specification.

X-ray protection circuit check

This test must be performed as final check before the
receiver is returned to the customer. If voltage is out of
tolerance, immediate service and correction is required
to insure safe operation and to prevent the possibility of
premature component failure.

Equipment needed to check the protection circuit:

1. Isolator transformer.

2. High voltage meter.

3. Short jumper.

4. Diode connection jumper.

Use similar diode than D823, refer to parts list for
part No., (diode should support at least 150V.)

0 ~ 0.93 00

0.93 ~ 0.97 01

0.97 ~ 1.01 02

1.01 ~ 1.05 03

1.05 ~ 1.09 04

1.09 ~ 1.13 05

1.13 ~ 1.17 06

1.17 ~ 1.21 07

5. Exit service mode and turn receiver OFF.

6. Connect a jumper from TPD16 to TPD17.

7. Connect the

diode jumper

, cathode to TPD14

(cold GND), anode to TPD15 (hot GND).

Note: Refer to Fig. 2 for test point location.

8. Apply 75V AC to the AC input of the Insulator
transformer.Turn receiver ON.

9. Set PICTURE and BRIGTHNESS to minimum.

10. Increase the AC voltage at the input of Insulator
transformer and confirm the HHS voltage is

32.0kV, at the point set starts to loose sync,

11. Reset picture controls to original levels.

12. Turn the set OFF, and remove all jumpers and
connections from chassis.

-5-

Receiver feature table

FEATURE\MODEL CT-20G7DF CT-20D12DF

Chassis No AP391 BP391
Family NA7DM
Number of channels 181
Menu language Eng/Span/Fr
Closed Caption X
V-Chip X
75 Ω input X
Remote Model number EUR501450 EUR51 1502
Picturetubetype PANABLACK
Picture tube Supplier SAMSUNG
Comb Filter 2DIG
V/A norm V
FM Radio ---- X
MTS/SAP/DBX X
Built-in audio power 1.5Wx2 (10%)
Number of speakers 2
AI Sound X
A/V in (rear/front) 1(1/1)
Audio Out (F:FAO/V:VAO) --- F,V
S-VHS In (rear/front) --- 1/0
EPJ/HPJ/MISC HPJ
Dimensions mm

(WxDxH) in
Weight (kg/lbs) 18/39.6
Anode voltage
Video input jack 1Vp-p 75Ω, phono
Audio input jack 500mV rms, 47KΩ
A-Board TNP2AH040 DH* DK*
C-Board TNP2AA106 AF*

515.7x490.5x461.7

20.30x19.31x18.17

± 1.25 kV

26.60

Table 1. Receiver features

*Note: When ordering a board, add and ” S” after the board suffix application.

Example, If order A-Board for CT-20G7DF, should be ordered as:

TNP2AH040

DHS.

Specifications are subject to change without notice or obligation.
Dimensions and weights are approximate.

-6-

Chasis service adjustment procedures

All service adjustments are factory preset and should not require adjustment unless controls and/or
associated components are replaced.

Note: Connect the (-) lead of the voltmeter to the appropriate ground. Use IC801’s heat sink when the HOT

ground symbol ( ) is used. Otherwise, use COLD ground ( ) — tuner shield, IC451’s heat sink or FA2.

Figure 2. A-Board main

components
and test points

IC552

IC551

T
U
N
E
R

FA1

CLK

DATA

FA2

IC2302

IC2301

IC002

IC001

A11

TPE10

TPE11

IC050

COLD ( )

IC003

C825

TPD17

TPD15

TPD16

HOT ( )

F801

IC801

TPD14

CRT

GND

TPD9

IC451

D561

TPD8

D554

SCREENFOCUS

COMPONENTS WITHIN DOT LINES ARE LOCATED AT THE OPOSITESIDE OF BOARD.

130.0V B+ voltage confirmation

1. Set the BRIGHT and the PICTURE to minimum by
using the PICTURE menu.

2. Connect the DVM between C825 (+ side) and cold
ground ( ).

3. Confirm that B+ voltage is 130.0V ± 2.5V.This
voltage supplies B+ to the horizontal output &
flyback circuits.

Source voltage chart

120V AC line input. Set the BRIGHT and the PICTURE
to minimum by using the PICTURE menu. Use cold
ground

(

) for the (-) lead of the DVM.

LOCATION VOLTAGE

TPD8 26.0V ± 2V
TPD9 25.0V ± 2V

LOCATION VOLTAGE

IC552 Pin3 5.0V ± 0.25V
IC551 Pin3 9.0V ± 0.25V
D554 Cathode 200V ± 15V

Adjust PICTURE menu for normalized video
adjustments.

High voltage check

1. Select an active TV channel and confirm that the
horizontal is in sync.

2. Adjust BRIGHTNESS and PICTURE using picture
icon menu, so video just disappears.

3. Confirm B+ 130V is within limit.

4. Using a high voltage meter confirm that the high
voltage is:

26.60kV±1.25kV

-7-

Audiosignalpathblockdiagram

A-BOARD

LEFT

SPEAKER

-

+

OUT

LEFT

5

10

OUT

VAO

LEFT

AUDIO AMP

LEFT CHANNEL

TV IN

3

LEFT

VOL

6

SP SW

RIGHT

TV IN

3

RIGHT

SPEAKER

-

+

OUT

RIGHT

10

OUT

RIGHT

VOL

699

5

VAO

AUDIO AMP

RIGHT CHANNEL

SP SW

JK3002

REAR A/V

OUT

AUDIO

67

SP / CP

64

VOL

IC001

MPU/VCJ

M65580MAP10

only for CT-20D12DF

TNR001

MAIN TUNER

MTS

22

OUT

RIGHT

IN

RIGHT

IN

LEFT

ANN5829S-E1V.

CHANNELS

LEFT&RIGHT

21

OUT

LEFT

14

MPX IN

IC2201

Figure 3. Audio signal block diagram

A/V 2

2 3

RIGHT RIGHT

LEFT LEFT

JK3002

REAR A/V

JK3001

A/V 1

FRONT A/V

-8-

Videosignalpathblockdiagram

Q353 -B

Q351 -R

Q352 -G

C-BOARD

Q356 -B

Q354 -R

Q355 -G

1

2

A-BOARD

C1

A11

1

3

2

3

Q053

TNR001

MAIN TUNER

Q055

Q054

V IDEO IN

Q006

Q007

Q008

Q050 Q053 Q053

R

41 8

IC050

2 3 9

HALFTONE

6

TONE

HALF-

R

GB

OSD

EXT

5

59

48 49 51

20

R-OUT

G-OUT

B-OUT

28

28

FB

IC001

26

TV IN

Y IN

22

32

30

MPU/VCJ

M65580MAP10

C IN

SSW

24

72

13

3.3V

A/V 2

JK3002

REAR A/V

V IDEO IN

A/V 1

JK3001

FRONT A/V

JK3001

only for CT-20D12DF

Figure 4. Video signal block diagram

-9-

REPLACEMENT PARTS LIST

Models: CT-20D12DF, CT-20G7DF

Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing

any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

CAPACITORS

C001 TCJ2VF1H103Z CAP,C .01UF-Z-50V

C002 TCJ2VB1H471K CAP,C 470PF-K-50V
C003 ECA1HM4R7B CAP,E 4.7UF-50V
C004 TCJ2VC1H150J CAP,C 15PF-J-50V
C005 TCJ2VC1H150J CAP,C 15PF-J-50V
C008 TCJ2VF1H104Z CAP,C .1UF-Z-50V
C009 ECA1AM470B CAP,E 47UF-10V
C010 TCJ2VF1H104Z CAP,C .1UF-Z-50V
C011 ECA1AM101B CAP,E 100UF-10V
C015 ECJ2VB1C224K CAP,C .22UF-K-16V
C016 TCJ2VC1H101J CAP,C 100PF-J-50V
C017 TCJ2VB1C104K CAP,C .1UF-K-16V
C018 TCJ2VC1H151J CAP,C 150PF-J-50V
C020 TCJ2VB1C104K CAP,C .1UF-K-16V
C022 TCJ2VC1H101J CAP,C 100PF-J-50V
C023 TCJ2VC1H151J CAP,C 150PF-J-50V
C024 ECA1AM470B CAP,E 47UF-10V
C025 TCJ2VB1C104K CAP,C .1UF-K-16V
C026 TCJ2VB1C104K CAP,C .1UF-K-16V
C027 TCJ2VC1H391J CAP,C 390PF-J-50V
C028 TCJ2VB1C104K CAP,C .1UF-K-16V
C029 ECQB1H333JF3 CAP,P .033UF-J-50V
C031 ECA1HMR22B CAP,E .22UF-50V
C032 ECA1AM470B CAP,E 47UF-10V
C033 TCJ2VC1H390J CAP,C 39PF-J-50V
C034 TCJ2VF1H103Z CAP,C .01UF-Z-50V
C035 ECA1HM010B CAP,E 1UF-50V
C036 TCJ2VF1H103Z CAP,C .01UF-Z-50V
C037 ECA1HM0R1B CAP,E 0.1UF/50V
C038 ECA1AM470B CAP,E 47UF-10V
C040 ECA1AM470B CAP,E 47UF-10V
C041 ECA1HM2R2B CAP,E 2.2UF-50V
C042 TCJ2VF1H104Z CAP,C .1UF-Z-50V
C043 ECA1AM470B CAP,E 47UF-10V
C044 TCJ2VC1H471J CAP,C 470PF-J-50V
C045 ECA1HM0R1B CAP,E 0.1UF/50V
C046 TCJ2VB1C104K CAP,C .1UF-K-16V
C047 TCJ2VC1H220J CAP,C 22PF-J-50V
C048 TCJ2VC1H220J CAP,C 22PF-J-50V
C050 ECA1AM101B CAP,E 100UF-10V
C051 TCJ2VF1H104Z CAP,C .1UF-Z-50V
C054 TCJ2VF1H103Z CAP,C .01UF-Z-50V

PARTS LIST

C055 TCJ2VC1H560J CAP,C 56PF-J-50V
C057 ECKR1H471KB5 CAP,C470PF-K-50V
C103 ECA0JM331B CAP,E 330UF-6.3V
C104 TCJ2VF1H103Z CAP,C .01UF-Z-50V
C105 ECA0JM101B CAP,E 100UF-6.3V
C350 ECA1CM101B CAP,E 100UF/16V
C351 TCJ2VB1H391K CAP,C 390PF-K-50V
C352 TCJ2VB1H391K CAP,C 390PF-K-50V

CT-20D12DF

CT-20D12DF

REF NO. PART NO. DESCRIPTION

C353 TCJ2VB1H471K CAP,C 470PF-K-50V
C354 ECKW3D102KBN CAP,C .001UF-K-2KVDC
C357 EEANA1E1R0B CAP,E 1.0U F- 25V
C361 TCJ2VC1H151J CAP,C 150PF-J-50V
C362 TCJ2VC1H151J CAP,C 150PF-J-50V
C363 TCJ2VC1H151J CAP,C 150PF-J-50V
C451 ECA1CHG470B CAP,E 47UF-16V
C452 ECSF1EE105VB CAP,E 1.0UF-25V
C453 ECEA1HFS2R2B CAP,E 2.2UF-50V
C454 ECA1EM102E CAP,E 1000UF-25V
C455 ECA1EHG101B CAP,E 100UF -25V
C456 ECQB1H103JF3 CAP,P .01UF-J-50V
C459 ECA1VHG471B CAP,E 470UF -35V
C462 ECA1HM4R7B CAP,E 4.7UF-50V
C502 TCJ2VC1H471J CAP,C 470PF-J-50V
C503 TCJ2VB1C104K CAP,C.1UF-K-16V
C504 TCJ2VB1C104K CAP,C .1UF-K-16V
C510 ECCR2H100D5 CAP,C 10PF-D-500V
C511 ECKR2H821KB5 CAP,C 820PF-K-500V
C512 ECKR2H101KB5 CAP,C 100UF-K-500V

C531 ECA1EM220B CAP,E 22UF-25V
C551 ECA1VM331B CAP,E 330UF-35V

C554 ECKR2H561KB5 CAP,C 560PF-K-500V

C555 ECA2EM220E CAP,E 22UF-250V
C556 ECA1CM471B CAP,E 470UF-16V

C557 ECKR2H222KB5 CAP,C 2200PF-K-500V

C560 ECEA1HN010UB CAP,E 1UF/50V

C561 ECKR2H561KB5 CAP,C 560PF-K-500V

C563 ECWH12H362JS CAP,P 3600PF-J-1250 VDC
C564 ECWH12H562JS CAP,P .0056UF-J-1.2KV
C565 ECKW3D331JBR CAP,C 330PF-J-2KV
C566 ECKW3D181JBP CAP,C 180PF-J-2KV
C568 ECQM4473JZW CAP,P .047UF-J-400V
C569 ECWF2394JBB CAP,P .39UF-J-200V

C570 ECA1CM222E CAP,E 2200UF-16V
C571 ECA1EM220B CAP,E 22UF-25V
C572 ECA1CM100B CAP,E 10UF-16V
C573 ECA1CM101B CA P,E 100UF/16V
C575 ECA0JM222B CAP,E 2200UF-6.3V
C577 ECA1CM101B CA P,E 100UF/16V
C578 ECA0JM332B CAP,E 3300PF-6.3V
C579 TCJ2VC1H100D CAP,C 10PF-J-50V
C580 ECKR2H152KB5 CAP,C .0015UF-K-500V
C605 TCJ2VF1H103Z CAP,C .01UF-Z-50V
C606 ECA0JM221B CAP,E 220UF-6.3V
C800 ECKR3A391KBP CAP,C 390PF-K-1KVDC

C801 ECKWAE472ZED CAP,C4700PF-Z-500V
C802 ECKWAE472ZED CAP,C 4700PF-Z-500V
C803 ECKWAE472ZED CAP,C4700PF-Z-500V
C805 EC0S2DA221BB CAP,E 220UF/200V

C806 ECQM4103KZW CAP,P .01UF-K-400V

Parts List

-10-

120-02

REPLACEMENT PARTS LIST

Models: CT-20D12DF, CT-20G7DF

Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing

any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

C807 ECKR3A821KBP CAP,C 820PF-K-1KV
C808 ECA1VM101B CAP,E 100UF-35V
C809 ECKR1H101KB5 CAP,C100PF-K-50V
C810 ECKR1H471KB5 CAP,C470PF-K-50V

C812 ECQU2A224MVA CAP,P .22UF-M-250VAC
C813 ECQU2A153MVA CAP,P .015UF-M-250VAC
C814 ECQU2A153MVA CAP,P .015UF-M-250VAC

C820 ECA1CM101B CAP,E 100UF/16V
C821 TCJ2VF1H103Z CAP,C .01UF-Z-50V
C822 ECKR3A221KBP CAP,C 220PF-K-1KV

C823 ECA1VM471E CAP,E 470UF-35V

C824 ECKR3A102KBP CAP,C 1000PF-K-1KV

C825 EEUMG2C221S CAP,E 220UF-160V

C826 ECKR3A471KBP CAP,C 470PF-K-1KV
C827 ECA1CM471B CAP,E 470UF-16V

C828 ECA160V33UE CAP,E 33UF/160V

C2201 ECA1HM4R7B CAP,E 4.7UF-50V
C2202 ECA1HM2R2B CAP,E 2.2UF-50V
C2203 ECA1HM4R7B CAP,E 4.7UF-50V
C2204 AP106K016CAE CAP,T 10UF/16V
C2205 ECA 1HMR33B CAP,E .33UF-50V
C2206 ECQB1H223JF3 CAP,P .022UF-J-50V
C2207 AP335K016CAE CAP,T 3.3UF/16V
C2208 TCJ2VB1C104K CAP,C .1UF-K-16V
C2209 TCJ2VB1C104K CAP,C .1UF-K-16V
C2210 TCJ2VB1C104K CAP,C .1UF-K-16V
C2212 ECQB1H473JF3 CAP,P .047U F-J-50V
C2213 ECA1HMR47B CAP,E .47UF-50V
C2214 ECA1AM101B CAP,E 100UF-10V
C2215 EEANA1E100B CAP,E 10UF-25V
C2216 TCJ2VC1H100D CAP,C 10PF-J-50V
C2301 ECA1EM102E CAP,E 1000UF-25V
C2302 ECEA1HN010UB CAP,E 1UF/50V
C2303 ECA1EM101B CAP,E 100UF-25V
C2304 ECA1CM100B CAP,E10UF-16V
C2307 ECA1CM102B CAP,E1000UF/16V
C2309 ECA1HM010B CAP,E 1UF-50V
C2311 ECA1EM102E CAP,E 1000UF-25V
C2312 ECEA1HN010UB CAP,E 1UF/50V
C2313 ECA1EM101B CAP,E 100UF-25V
C2314 ECA1CM100B CAP,E10UF-16V
C2317 ECA1CM102B CAP,E1000UF/16V
C2319 ECA1HM010B CAP,E 1UF-50V
C2320 ECA1CM100B CAP,E10UF-16V
C2330 ECA1CM100B CAP,E10UF-16V
C2350 ECA1HM100B CAP,E10UF/50V
C3001 ECA1HM0R1B CAP,E 0.1UF/50V
C3012 ECA1HM010B CAP,E1UF-50V
C3018 ECA1HM010B CAP,E 1UF-50V
C3050 TCJ2VF1H103Z CAP,C.01UF-Z-50V
C3051 TCJ2VF1H103Z CAP,C.01UF-Z-50V

CT-20D12DF

CT-20D12DF

CT-20D12DF
CT-20D12DF

REF NO. PART NO. DESCRIPTION

DIODES

D002 MA165TA5VT DIODE, SWITCHING
D006 MA4330HTA DIODE
D052 MA4068MTA DIODE, ZENER
D053 MA4056MTA DIODE
D055 MA4056MTA DIODE
D451 ERA15-01V3 DIODE, RECTIFIER
D452 MA4047MTA DIODE
D453 MA165TA5VT DIODE, SWITCHING
D454 MA165TA5VT DIODE, SWITCHING
D456 MA4047MTA DIODE
D502 MA4047MTA DIODE

D531 AS01V0 DIODE
D551 D1NL20UV70 DIODE
D554 AU02V0 DIODE

D558 RS3FS DIODE
D559 BYD33G-113 DIODE

D561 AU02V0 DIODE

D571 MA165TA5VT DIODE, SWITCHING
D606 MA165TA5VT DIODE, SWITCHING
D607 MA152KTX DIODE
D608 MA152KTX DIODE
D609 MA152KTX DIODE

D801 D3SBA60-4103 DIODE
D806 TAP2AA0001 PTC 5-OHM

D808 SARS01V1 DIODE
D809 AG01V0 DIODE
D810 AG01V0 DIODE
D811 AG01V0 DIODE

D812 MA4068MTA DIODE, ZENER

D820 MA165TA5VT DIODE, SWITCHING
D821 MA4047HTA DIODE
D822 RN1ZLF-B1 DIODE

D823 S3L60P154004 DIODE

D824 D1NL20UV70 DIODE
D2305 MA3110MTX DIODE, ZENER
D2306 MA3110MTX DIOD E, ZENER
D2307 MA3110MTX DIODE, ZENER
D2308 MA3110MTX DIOD E, ZENER
D2350 MA4068MTA DIODE, ZENER
D2351 MA165TA5VT DIODE, SWITCHING
D2352 MA165TA5VT DIODE, SWITCHING
D2353 MA165TA5VT DIODE, SWITCHING
D2354 MA4091MTA DIODE
D3001 MA3110MTX DIOD E, ZENER
D3003 MA3110MTX DIODE, ZENER
D3004 MA3110MTX DIOD E, ZENER
D3005 MA3110MTX DIODE, ZENER
D3006 MA3110MTX DIOD E, ZENER
D3017 MA3110MTX DIODE, ZENER
D3018 MA3110MTX DIOD E, ZENER

CT-20D12DF
CT-20D12DF
CT-20D12DF
CT-20D12DF

PARTS LIST

120-02

-11-

Parts List

REPLACEMENT PARTS LIST

Models: CT-20D12DF, CT-20G7DF

Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing

any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

D3019 MA3110MTX DIODE, ZENER
D3020 MA3110MTX DIODE, ZENER
D3021 MA3110MTX DIODE, ZENER
D3022 MA3110MTX DIODE, ZENER

FUSES

F801 XBA2A00101 FUSE 6.3A 125V

INTEGRATED CIRCUITS

IC001 M65580MAP103 MPU/VCJ

IC002 TVR2AJ125 EEPROM
IC003 PIC-37042S R IR RECEIVER
IC005 PQ1X331M2Z P VOLTAGEREGULATOR, 3.3V
IC006 MN1280R RESET
IC050 TC74HC4066AL HALFTONE

IC451 LA7837-TV V-OUT

IC551 AN78L09 INT CKT
IC551 AN78M09LB VOLTAGE REGULATOR 9V

IC552 AN78M05LB VOLTAGE REGULATOR, 5V
IC553 AN78M05LB VOLTAGE REGULATOR, 5V
IC801 STRG5623A POWER SUPPLY, 360V

IC2201 AN5829S-E1V MTS, S-AGC
IC2301 AN17800A AUDIO AMP
IC2301 AN17801A AUDIO AMP
IC2302 AN17800A AUDIO AMP
IC2302 AN17801A AUDIO AMP

COILS

L001 EXCELSA35T FERRITE BEAD
L003 TLUABTA2R2K COIL, PEAKING 2.2UH
L004 TLUABTA2R2K COIL, PEAKING 2.2UH
L005 EXCELDR35V FERRITE BEAD
L006 EXCELSA24T FERRITE BEAD
L007 EXCELDR35V FERRITE BEAD
L008 TLUAB TA470K COIL, PEAKING 47UH
L009 EXCELSA35V FERRITE BEAD
L010 ELESN330JA COIL, PEAKING 33UH
L011 ELESN330JA COIL, PEAKING 33UH
L013 EXCELDR35V FERRITE BEAD
L014 ELESN180KA COIL, PEAKING 18UH
L015 EXCELSA35V FERRITE BEAD
L016 EXCELSA35V FERRITE BEAD
L017 TLUAB TA100K COIL, PEAKING 10UH
L018 TLUABTA150K COIL, PEAKING 15UH
L019 EXCELDR35V FERRITE BEAD
L090 EXCELSA24T FERRITEBEAD

PARTS LIST

L104 TLUABTA2R2K COIL, PEAKING 2.2UH
L108 EXCELSA35V FERRITE BEAD
L238 EXCELSA39V FERRITE BEAD
L245 EXCELSA35V FERRITE BEAD
L250 EXCELSA35V FERRITE BEAD
L306 TLUABTA2R2K COIL, PEAKING 2.2UH
L325 EXCELSA35V FERRITE BEAD
L403 TLUABTA2R2K COIL, PEAKING 2.2UH

CT-20D12DF

CT-20G7DF

CT-20G7DF

CT-20D12DF

CT-20G7DF

CT-20D12DF

REF NO. PART NO. DESCRIPTION

L416 EXCELSA39V FERRITE BEAD

L551 ELH5L4101 COIL
L801 ELF15N011A COIL, PEAKI NG

L802 ELEIE680KA COIL, PEAKING 68UH
L803 TALL08T680KA COIL
L2305 EXCELSA35V FERRITE BEAD
L2308 EXCELSA24V FERRITE BEAD
L2350 ELESN4R7JA COIL, PEAKING 4.7UH

TRANSISTORS

Q001 2SD601ARTX TRANSISTOR
Q006 2SB709ARTX TRANSISTOR
Q007 2SB709ARTX TRANSISTOR
Q008 2SB709ARTX TRANSISTOR
Q009 2SC1473A TRANSISTOR
Q050 2SB709ARTX TRANSISTOR
Q051 2SB709ARTX TRANSISTOR
Q052 2SB709ARTX TRANSISTOR
Q053 2SD601ARTX TRANSISTOR
Q054 2SD601ARTX TRANSISTOR
Q055 2SD601ARTX TRANSISTOR
Q090 2SB709ARTX TRANSISTOR
Q092 2SB709ARTX TRANSISTOR
Q351 2SC3063RL TRANSISTOR
Q352 2SC3063RL TRANSISTOR
Q353 2SC3063RL TRANSISTOR
Q354 2SD601ARTX TRANSISTOR
Q355 2SD601ARTX TRANSISTOR
Q356 2SD601ARTX TRANSISTOR
Q451 2SD601ARTX TRANSISTOR
Q452 2SD601ARTX TRANSISTOR
Q453 2SD601ARTX TRANSISTOR
Q501 2SC1573AH TRANSISTOR
Q505 2SD601ARTX TRANSISTOR
Q520 2SD601ARTX TRANSISTOR

Q551 2SC562200VLA TRANSISTOR

Q605 2SB709ARTX TRANSISTOR
Q606 2SD601ARTX TRANSISTOR
Q820 2SA1767QTA TRANSISTOR
Q830 2SB1011QRL TRANSISTOR
Q2350 2SB709ARTX TRANSISTOR

RELAYS

RL801 TSEH0005 RELAY

RESISTORS

R001 ERJ6GEYJ102V RES,M 1K-J-1/10W
R003 ERJ6GEYJ105V RES,M 1M-J-1/10W
R004 ERJ6GEYJ562V RES,M 5.6K-J-1/10W
R006 ERDS2TJ101T RES,C 100-J-1/4W
R007 ERJ6GEYJ471V RES,M 470-J-1/10W
R008 ERJ6GEYJ471V RES,M 470-J-1/10W
R009 ERJ6GEYJ472V RES,M 4.7K-J-1/10W
R010 ERJ6GEYJ682V RES,M 6.8K-J-1/10W

Parts List

-12-

120-02

REPLACEMENT PARTS LIST

Models: CT-20D12DF, CT-20G7DF

Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing

any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

R011 ERJ6GEYJ682V RES,M 6.8K-J-1/10W
R012 ERJ6GEYJ473V RES,M 47K-J-1/10W
R013 ERJ6GEYJ202V RES,M 2K-J-1/10W
R014 ERJ6GEYJ221V RES,M 220-J-1/10W
R015 ERJ6GEYJ221V RES,M 220-J-1/10W
R016 ERJ6GEYJ221V RES,M 220-J-1/10W
R017 ERJ6GEYJ681V RES,M 680-J-1/10W
R018 ERJ6GEYJ681V RES,M 680-J-1/10W
R019 ERJ6GEYJ681V RES,M 680-J-1/10W
R021 ERJ6GEYJ101V RES,M 100-J-1/10W
R022 ERJ6GEYJ101V RES,M 100-J-1/10W
R023 ERJ6GEYJ102V RES,M 1K-J-1/10W
R024 ERJ6GEYJ153V RES,M 15K-J-1/10W
R028 ERJ6GEYJ472V RES,M 4.7K-J-1/10W
R029 ERJ6GEYJ472V RES,M 4.7K-J-1/10W
R032 ERJ6ENF1002V RES,M 10K-F-1/10W
R033 ERJ6GEYJ222V RES,M 2.2K-J-1/10W
R034 ERJ6GEYJ222V RES,M 2.2K-J-1/10W
R035 ERJ6GEYJ332V RES,M 3.3K-J-1/10W
R036 ERJ6GEYJ562V RES,M 5.6K-J-1/10W
R037 ERJ6GEYJ103V RES,M 10K-J-1/10W
R038 ERJ6GEYJ223V RES,M 22K-J-1/10W
R039 ERJ6GEYJ102V RES,M 1K-J-1/10W
R040 ERJ6GEYJ223V RES,M 22K-J-1/10W
R041 ERJ6GEYJ153V RES,M 15K-J-1/10W
R042 ERJ6GEYJ392V RES,M 3.9K-J-1/10W
R043 ERJ6GEYJ103V RES,M 10K-J-1/10W
R044 ERJ6GEYJ103V RES,M 10K-J-1/10W
R044 ERJ6GEYJ332V RES,M 3.3K-J-1/10W
R045 ERJ6GEYJ101V RES,M 100-J-1/10W
R046 ERJ6GEYJ102V RES,M 1K-J-1/10W
R062 ERJ6GEYJ102V RES,M 1K-J-1/10W
R063 ERJ6GEYJ102V RES,M 1K-J-1/10W
R064 ERJ6GEYJ102V RES,M 1K-J-1/10W
R065 ERJ6GEYJ272V RES,M 2.7K-J-1/10W
R066 ERJ6GEYJ272V RES,M 2.7K-J-1/10W
R067 ERJ6GEYJ272V RES,M 2.7K-J-1/10W
R068 ERJ6GEYJ182V RES,M 1.8K-J-1/10W
R069 ERJ6GEYJ682V RES,M 6.8K-J-1/10W
R070 ERJ6GEYJ102V RES,M 1K-J-1/10W
R071 ERJ6GEYJ102V RES,M 1K-J-1/10W
R072 ERJ6GEYJ102V RES,M 1K-J-1/10W
R077 ERJ6GEYJ103V RES,M 10K-J-1/10W
R078 ERJ6GEYJ103V RES,M 10K-J-1/10W
R081 ERJ6GEYJ103V RES,M 10K-J-1/10W
R090 ERJ6GEYJ471V RES,M 470-J-1/10W
R091 ERJ6GEYJ185V RES,M 1.8MEG-J-1/10W
R092 ERJ6GEYJ473V RES,M 47K-J-1/10W
R093 ERJ6GEYJ331V RES,M 330-J-1/10W
R201 ERJ6GEYJ182V RES,M 1.8K-J-1/10W
R202 ERJ6GEYJ102V RES,M 1K-J-1/10W

CT-20D12DF

CT-20G7DF

CT-20D12DF

CT-20D12DF

CT-20D12DF
CT-20D12DF

REF NO. PART NO. DESCRIPTION

R202 ERJ6GEYJ751V RES,M 750-J-1/10W
R351 ERG2FJ123H RES,M 12K-J-2W
R352 ERG2FJ123H RES,M 12K-J-2W
R353 ERG2FJ123H RES,M 12K-J-2W
R354 ERDS1TJ272T RES,C 2.7K-J-1/2W
R355 ERDS1TJ272T RES,C 2.7K-J-1/2W
R356 ERDS1TJ272T RES,C 2.7K-J-1/2W
R357 ERJ6ENF4300V RES,M 430-F-1/10W
R358 ERJ6ENF4300V RES,M 430-F-1/10W
R359 ERJ6ENF4300V RES,M 430-F-1/10W
R360 ERJ6ENF7500V RES,M 750-F-1/10W
R361 ERJ6ENF7500V RES,M 750-F-1/10W
R362 ERJ6ENF7500V RES,M 750-F-1/10W
R363 ERJ6GEYJ101V RES,M 100-J-1/10W
R364 ERJ6GEYJ101V RES,M 100-J-1/10W
R365 ERJ6GEYJ101V RES,M 100-J-1/10W
R370 ERDS2TJ224T RES,C 220K-J-1/4W
R381 ERJ6GEYJ101V RES,M 100-J-1/10W
R382 ERJ6GEYJ101V RES,M 100-J-1/10W
R383 ERJ6GEYJ101V RES,M 100-J-1/10W
R384 ERJ6ENF2701V RES,M 2.7K-F-1/10W
R385 ERJ6ENF7501V RES,M 7.5K-F-1/10W
R386 ERJ6ENF1201V RES,M 1.2K-F-1/10W
R387 ERJ6ENF2701V RES,M 2.7K-F-1/10W
R388 ERJ6ENF7501V RES,M 7.5K-F-1/10W
R389 ERJ6ENF1201V RES,M 1.2K-F-1/10W
R390 ERJ6ENF2701V RES,M 2.7K-F-1/10W
R391 ERJ6ENF7501V RES,M 7.5K-F-1/10W
R392 ERJ6ENF1201V RES,M 1.2K-F-1/10W
R450 ERJ6GEYJ563V RES,M 56K-J-1/10W
R451 ERDS1FJ1R2P RES,C 1.2-J-1/2W
R454 ERJ6GEYJ473V RES,M 47K-J-1/10W
R455 ERJ6GEYJ153V RES,M 15K-J-1/10W
R456 ERJ6GEYJ472V RES,M 4.7K-J-1/10W
R457 ERJ6GEYJ152V RES,M 1.5K-J-1/10W
R458 ERJ6GEYJ333V RES,M 33K-J-1/10W
R459 ERJ6GEYJ683V RES,M 68K-J-1/10W
R460 ERDS2TJ102T RES,C 1K-J-1/4W
R462 ERJ6GEYJ473V RES,M 47K-J-1/10W
R463 ERJ6GEYJ473V RES,M 47K-J-1/10W
R465 ERJ6GEYJ303V RES,M 30K-J-1/10W
R467 ERJ6GEYJ183V RES,M 18K-J-1/10W
R468 ERJ6GEYJ103V RES,M 10K-J-1/10W
R469 ERJ6GEYJ220V RES,M 22-J-1/10W
R470 ERDS2TJ152T RES,C 1.5K-J-1/4W
R471 ERJ6GEYJ223V RES,M 22K-J-1/10W
R472 ERJ6GEYJ473V RES,M 47K-J-1/10W
R475 ERJ6GEYJ471V RES,M 470-J-1/10W
R502 ERJ6GEYJ562V RES,M 5.6K-J-1/10W
R504 ERDS2TJ152T RES,C 1.5K-J-1/4W
R505 ERJ6GEYJ222V RES,M 2.2K-J-1/10W

CT-20G7DF

PARTS LIST

120-02

-13-

Parts List

REPLACEMENT PARTS LIST

Models: CT-20D12DF, CT-20G7DF

Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing

any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

R506 ERJ6GEYJ333V RES,M 33K-J-1/10W
R507 ERJ6GEYJ103V RES,M 10K-J-1/10W
R508 ERJ6GEYJ103V RES,M 10K-J-1/10W

R510 ERG3FJ272 RES,M 2.7K-J-3W

R512 ERG2FJ562H RES,M 5.6K-J-2W
R520 ERJ6GEYJ471V RES,M 470-J-1/10W
R521 ERJ6GEYJ272V RES,M 2.7K-J-1/10W

R531 ERD25FJ470P RES,C 47-J-1/4W
R532 ERJ6ENF8871V RES,M 8.87K-F-1/10W
R533 ERJ6ENF1301V RES,M 1.3K-F-1/10W
R551 ERDS1FJ1R0T RES,C 1.0-J-1/2W
R552 ERDS1FJ1R0T RES,C 1.0-J-1/2W
R555 ERDS1FJ101T RES,C 100-J-1/2W

R556 ERG1SJ221P RES,M 220-J-1W
R557 ERJ6GEYJ103V RES,M 10K-J-1/10W

R558 ERQ2CJP2R2S RES,F 2.2-J-2W

R559 ERG2FJ683H RES,M 12K-J-2W
R562 ERG3FJ680H RES,M 68-J-3W
R563 ERG1SJ150P RES,M 15-J-1W
R567 ERG2FJ122H RES,M 12K-J-2W
R572 ERJ6GEYJ222V RES,M 2.2K-J-1/10W
R605 ERDS2TJ103T RES,C 10K-J-1/4W
R606 ERJ6GEYJ562V RES,M 5.6K-J-1/10W
R607 ERJ6GEYJ102V RES,M 1K-J-1/10W
R608 ERJ6GEYJ104V RES,M 100K-J-1/10W

R801 ERF7ZK1R5 RES,W 1.5-K-7W

R802 ERDS2TJ684T RES,C 680K-J-1/4W
R803 ERG2FJ100H RES,M 10K-J-1/2W
R804 ERG2FJ104H RES,M 100K-J-2W

R805 ERX2FZJR18H RES,M .18-J-2W
R806 ERX2FJR56H RES,M . 56-J-2W

R807 ERDS2TJ681T RES,C 680-J-1/4W
R808 ERDS2TJ4R7T RES,C 4.7-J-1/4W
R809 ERDS2TJ472T RES,C 4.7K-J-1/4

R815 ERC12ZGM825D RES,S 8.2MEG-M-1/2
R817 ERX3FJ6R8 RES,M 6.8-J-3W

R821 ERDS1FJ1R5T RES,C 1.5-J-1/2W
R822 ERDS1FJ1R5T RES,C 1.5-J-1/2W
R823 ERDS1FJ272T RES,C 2.7K-J-1/2W
R824 ERDS2TJ223T RES,C 22K-J-1/4W
R825 ERDS2TJ272T RES,C 2.7K-J-1/4W
R828 ERJ6GEYJ104V RES,M 100K-J-1/10W
R830 ERDS2TJ104T RES,C 100K-J-1/4W

PARTS LIST

R831 ERDS2TJ682T RES,C 6.8K-J-1/4W

R850 ERQ12HJR56P RES,F .56-J-1/2W

R2201 ERJ6GEYJ224V RES,M 220K-J-1/10W
R2203 ERJ6GEYJ102V RES,M 1K-J-1/10W
R2204 ERJ6GEYJ102V RES,M 1K-J-1/10W
R2205 ERJ6GEYJ101V RES,M 100-J-1/10W
R2206 ERJ6GEYJ273V RES,M 27K-J-1/10W
R2301 ERQ2CJP3R9S RES,F 3.9-J-2W

REF NO. PART NO. DESCRIPTION

R2307 ERJ6GEYJ103V RES,M 10K-J-1/10W
R2320 ERJ6GEYJ104V RES,M 100K-J-1/10W
R2350 ERDS2TJ391T RES,C 390-J-1/4W
R2351 ERJ6GEYJ562V RE S,M 5.6K-J-1/10W
R2352 ERJ6GEYJ683V RES,M 68K-J-1/10W
R2353 ERJ6GEYJ124V RES,M 120K-J-1/10W
R2354 ERJ6GEYJ123V RES,M 12K-J-1/10W
R2355 ERJ6GEYJ222V RE S,M 2.2K-J-1/10W
R2356 ERJ6GEYJ101V RES,M 100-J-1/10W
R2357 ERJ6GEYJ472V RE S,M 4.7K-J-1/10W
R2365 ERDS2TJ102T RES,C 1K-J-1/4W
R2370 ERJ6GEYJ103V RE S,M 10K-J-1/10W
R2417 ERJ6GEYJ104V RE S,M 100K-J -1/10W
R3001 ERDS2TJ101T RES,C 100-J-1/4W
R3005 ERJ6GEYJ334V RE S,M 330K-J -1/10W
R3007 ERJ6GEYJ151V RE S,M 150-J-1/10W
R3008 ERJ6GEYJ151V RES,M 150-J-1/10W
R3009 ERJ6GEYJ682V RE S,M 6.8K-J-1/10W
R3010 ERJ6GEYJ334V RE S,M 330K-J -1/10W
R3011 ERJ6GEYJ682V RE S,M 6.8K-J-1/ 10W
R3013 ERJ6ENF75R0V RES,M 75.0-F-1/10W
R3014 ERJ6ENF75R0V RES,M 75.0-F-1/10W
R3016 ERDS2TJ181T RES,C 180-J-1/4W
R3017 ERDS2TJ181T RES,C 180-J-1/4W
R3018 ERJ6GEYJ682V RES,M 6.8K-J-1/10W
R3019 ERJ6GEYJ682V RE S,M 6.8K-J-1/10W
R3050 ERJ6GEYJ101V RES,M 100-J-1/10W
R3051 ERJ6GEYJ101V RE S,M 100-J-1/10W

CT-20D12DF

CT-20D12DF

CT-20D12DF
CT-20D12DF

CT-20D12DF
CT-20D12DF

SWITCHES

S001 EVQPF106K SWITCH
S002 EVQPF106K SWITCH
S003 EVQPF106K SWITCH
S004 EVQPF106K SWITCH
S005 EVQPF106K SWITCH
S008 EVQPF106K SWITCH
S009 EVQPF106K SWITCH

TRANSFORMERS

T501 TLH15452 TRANSFORMER HORIZONTAL DRIVER
T551 KFT3AA341F TRANSFORMER FLYBACK
T801 ETS29AS183NC TRANSFORMER

CRYSTALS/FILTERS

X001 TSSA092 CRYSTAL OSCILLATOR
X002 AF080005BE CRYSTAL OSCI LLATOR

OTHERS

TNR001 ENG36604GR TUNER
TNR001 ENG36610G TUNER
M001 TSX2AA0111-1 LINE CORD (SPT2)
M002 A51KRE89XDT CRT 20”

M003 TXF3A011DB2 ASSY. DAG GROUND

M004 TJSC00300 CRT SOCKET
DY TLY2AA001 DEFLECTION YOKE

CT-20G7DF

CT-20D12DF

Parts List

-14-

120-02

REPLACEMENT PARTS LIST

Models: CT-20D12DF, CT-20G7DF

Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing

any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

M005 JH291U-009 YOKE, CONVERGENCE
M006 0FMK014ZZ CONVERGENCE CORRECTOR STRIP
M007 TMM2A30702 WEDGE, YOKE

DEG TSP2AA008 COIL, DE G AUSS ING 20”

M008 TXANV03ESER DEG. COIL INST. KIT

ASSY, CABINET BACK
(

M009 TXFKU05ESER

M010 TXFKU06ESER

M011 TXFKY09FSER

M012 TAS2AA0012 SPEAKER 16-OHM 1.5W

Cabinet Back, Double I nsul. Label,
Nameplate Model, F elt, Label X-Ray
Warning, Label X-Ray Warning French

ASSY, CABINET BACK C T-20D12DF

(Back Cover, Nameplate Model,
Instr.sht.X-Ray Label, Label X-Ray
Warning French, Label FCC)

ASSY, CABINET FRONT
(

Cabinet Front, Badge Panasonic, Guide
IR, Label X-Ray Warning)

CT-20G7DF

REF NO. PART NO. DESCRIPTION

M013 TKX2AA00404 GUIDE, IR
M014 TBM2A10141 BADGE, PANASONIC
M015 TBX2AA0121 BUTTON, 7-KEY
JK3001 TJB2A9063B ASSY. JACK 1A/V
JK3001 TJB2A9064B ASSY. JACK A/V
JK3002 TJB2AA0046 TERMINAL, FRONT A/V
JK3003 TJB2A A0171 TERMINAL, S-VHS

)

M016 EUR501450 REMOTE CONTROL
M017 EUR511502 REMOTE CONTROL

M018 UR50EC1190A

M019 UR51EC975A
M020 TQB2AA0431-1 MANUAL, OWNERS

ACCESORIES

BATTERY COVER, REMOTE CONTROL

BATTERY COVER, REMOTE CONTROL

CT-20D12DF

CT-20G7DF

CT-20D12DF

CT-20G7DF

CT-20D12DF

CT-20G7DF

CT-20D12DF
CT-20D12DF

Description of abbreviations guide

RESISTOR

TYPE TOLERANCE

CCarbonF±1%
FFuseJ±5%
M Metal Oxide K ±10%
SSolidM ±20%

W Wire Wound G±2%

RES, C 270-J-1/4

CAPACITOR

TYPE TOLERANCE

C Ceramic C ±0.25pF
E Electrolytic D ± 0.5pF
P Polyester F±1pF
SStyrolJ±5%
T Tantalum K ± 10%

L ±15%

M ± 20%

P +10% -0%
Z +80% -20%

CAP, P .068UF-K-50V

120-02

-15-

PARTS LIST

Parts List

Notes:

IMPORTANT SAFETY NOTICE

THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL
FEATURES THAT ARE IMPORTANT FOR PROTECTION FROM
X-RADIATION, FIRE AND ELECTRICAL SHOCK HAZARDS.
WHEN SERVICING IT IS ESSENTIAL THAT ONL Y
MANUFACTURERS SPECIFIED PARTS BE USED FOR THE
CRITICAL COMPONENTS DESIGNATED WITH A IN THE
SCHEMATIC.

SCHEMATIC NOTES

1. Resistors are carbon 1/4W unless noted
otherwise.

2. Capacitors are ceramic 50V unless noted
otherwise.

3. Coil value notes is inductance in µH.

4. Test point indicated by ; Test point but no
pin .

5. Components indicated with are critical
parts and replacement should be made
with manufacture specified replacement
parts only.

6. (BOLD LINE) indicates the rout e
of B+ supply.

7. The schematic diagrams are current at
the time of printing and are subject to
change without notice.

8. Ground symbol indicates HOT
GROUND CONNE CTION;
indicates COLD GROUND.

NOTE: All other component symbols are

VOLTAGE MEASUREMENTS

1. Voltage measurement:

- AC input to the Receiver is 120V.
NTSC (HD, 1125i & 525P when
applicable) signal generator is
connected to the antenna of the
Receiver. (Color bar pattern of 100
IRE white and 7.5 IRE black.)

- All Picture and Audio adjustments are
set to Normalize.
TV ANT/CABLE - (Set-Up Menu) in
TV/ANT Mode
Volume - Min.
TV/Video SW - TV position
Audio Mode - Stereo

- Voltage readings are nominal and
may vary ±10% on active devices.
Some voltage reading will vary
with signal st rengt h and picture
content.

- Supply voltages are nominal.

2. Ground symbol indicates ground lead
connection of meter.
Incorrect ground connection will result
in erroneous readings.

CAUTION: Incorrect ground connection

of the test equipment will result in
erroneous readings.

CHIP TRANSISTOR
LEAD DE SIGNATION

B
E

used for engineering design
purposes.

C

3

1. indicates waveform measurement.
(Measurement can be taken at the best
accessible location in common to the
indicated point.)

2. Taken with an NTSC signal generator
connected to the antenna terminal.
(NTSC c olo r bar pattern of 8 bars of EIA
colors, 100 IRE white and 7.5 IRE black.)

3. Customer Controls (Picture/Au dio Menu) are
set t o Normalize. Volume is set to “MIN”.

WAVEFORM MEASUREMENTS

4. All video and color waveforms are taken
with a wideband scope and a probe
with low capacitance (10 to 1). Shape
and peak altitudes may vary
depending on the type of Oscilloscope
used and its settings.

5. Ground symbol show n on waveform
number indicates (Hot) ground lead
connection of the Oscilloscope.

CAUTION: Incorrect ground connection of
the test equipment will result in erroneous
readings.

PARTS LIST

-16-

Notas

NOTA DE SEGURIDAD

LOS DIAGRAMAS ELÉCTRICOS INCLUYEN
CARACTERÍSTICAS ESPECIALES MUY IMPORTANTES
PARA LA PROTECCIÓN CONTRA RAYOS-X,
QUEMADURAS Y DESCARGAS ELÉCTRICAS. CUANDO
SE DE SERVICIO ES IMPORTANTE USAR PARA
REEMPLAZO DE COMPONENTES CRITICOS, SOLO
PARTES ESPECIFICADAS POR EL FABRICANTES. LOS
COMPONENTES CRITICOS ESTAN SEÑALADOS EN LOS
DIAGRAMAS POR EL SIMBOLO .

NOTAS DE LOS DIAGRAMAS

1. Las Res istencias son de Carbón de 1/4W,a
menos que se indique otra característica.

2. Los Capacitores so n de Cerámica para
50V, a menos que se indique otra
característica.

3. El valor indicado de las Bobinas es la
inductancia expresada en µH.

4. Los puntos de prueba en la terminal de
algún componente son indicados por Los
puntos de prueba fuera de los
componentes se indican con .

5. Los componentes s eñalados con el
símbolo son considerados
componentes críticos y deben ser

6. (LINEA GRUESA) indica las

7. Los diagram as eléctricos están sujetos a

8. El símbolo indica que es una

NOTA: Los demas símbolos de

IDENTIFICACIÓNDE TERMINALES
PARATRANSISTORES EN

B
E

reemplazados sólo con las partes
especificadas por el fabricante.

líneas de alimentación de los Voltajes
B+.

cambio sin previo aviso.

conexión a Tierra Caliente y el símbolo

indica conexión a Tierra Fría.

componentes incluidos son
usados con fines de diseño.

CHIP

C

MEDICIÓN DE VOLTAJES

1. Medición de voltaje:

- El voltaje de entrada al Receptor es de
120V de Corriente Alterna. Un
generador de patrones con formato
NTSC se conecta a la entrada de la
antena. (Patrón de Barras de Colores
con 100 IREs para el Blanco y 7.5 IREs
para el Negro.)

- Los ajustes de los Menus Picture y
Audio se normalizan.
EnelMenúSet-Up,enlaopción
ANTENA, se selecciona el modo de
CABLE.
El nivel de Volumen se minimiza.
De los modos TV y Video, seleccionar el
modo TV.
Seleccionarmodo Estereo del Audio.

- Las mediciones de los voltajes son
nominales y pueden variar hasta
10% en componentes en
funcionamiento. Las lecturas de los
voltajes pueden variar por la
potencia de la señal y el contenido
de la imagen.

- Las fuentes de voltajes son
nominales.

2. El símbolo indica el tipo de tierra que
se utiliza en la conexión del medidor.

PRECAUCION: SI no se utiliza la
conexión a la tierra adecuada, se
obtendrán mediciones equivocadas y
podría dañar el equipo de medición.

MEDICIÓN DE FORMAS DE ONDA

1. Un símbolocomo indica el punto para medir
una señal. (La medición puede hacerse en
el punto con ma yor accesibilidad, siempre
que sea com ún al indicado.)

2. Se midieron utilizando un generador con

PARTS LIST

formato NTSC conectado a la terminal de la
antena. (Patrón de 8 Barras de Colores
EAI, formato NTSC de 100 IREs para el
Blanco y 7.5 IREs para el Negro.)

3. Los ajustes de usuario de los Menus
PICTURE y AUDIO se normalizaron.
Posteriormente el nivel de volumen se
ajusta al mínimo.

4. Las formas de onda de Video y Color
fueron tomadas con un osciloscopio de

3

banda alta y con un punta de prueba de
baja capacitancia (10 a 1). La forma y
amplitud de las ondas puede variar
según el tipo de osciloscopio que se
utilice y sus características.

5. El símbolo de tierra que aparece junto al
número de la forma de onda, indica que
se utiliza conexión a Tierra Caliente en
el extremo negativo de la punta de
prueba.

PRECAUCION: Si no se utiliza la conexión

a la tierra adecuada, se obtendrán
mediciones equivocadas y podría dañar el
equipo de medición.

-17-

A&C-Board Layout

- 18 -

- 19 -

A&C-Board Layout

A-Board CT-20G7DF

- 20 -

- 21 -

A-Board CT-20G7DF

A-Board CT-20G7DF

- 22 -

- 23 -

A-Board CT-20G7DF

A-Board CT-20G7DF

- 24 -

NOTES:

- 25 -

Notes

A-Board CT-20D12DF

- 24 -

- 25 -

A-Board CT-20D12DF

A-Board CT-20D12DF

- 26 -

- 27 -

A-Board CT-20D12DF

A-Board CT-20D12DF

- 28 -

C-Board schematic

C-Board transistor voltages

Q351

B
C
E

B
C
E

7.47

96.00

7.00

Q354

2.90

7.50

2.40

Q352

7.40

98.20

6.90

Q355

2.90

7.40

2.40

- 29 -

Q353

98.80

Q356

C-Board schematic & transistor voltages

7.40

6.90

2.90

7.40

2.40

A-Board Waveforms (All Models -- Todos los Modelos)

1.3V p-p [20µs]

1

TPA5 (VIDEO)

14.20MHz Xtal

IC001 PIN 35

2

A/DCOSC

1.68V p-p [20µs]

3

A11-1 (R OUT)

1.44V p-p [20µs]

4

A11-2 (G OUT)

1.40V p-p [20µs]

5

9.20V p-p [20µs]

6

1.32V p-p [20µs]

7

48V p-p [20µs]

8

IC451-12 V OUT

(B OUT)

A11-3

VIN

IC451-2

V DRIVE

IC451-7

28V p-p [5ms]

9

IC451-13 (PUMP-UP)

5.52V p-p [5ms]

10 14

IC001-44(H PULSE)

3.12V p-p [5ms]

11

IC001-43 (FBT PULSE)

164V p-p [5ms]

12

Q501-Collector H Drive

13

15

112V p-p [5ms]

Q551-Collector H Out

276V p-p [20µs]

IC801-1

2.90V p-p [20µs]
IC801-5

A-Board transistor voltages

Q001

B
C
E

0.00

11.00
GND

Q052

B
C
E

4.98

GND

2.67

Q452

B
C
E

0.00

2.49

GND

Q606

B
C
E

0.00

3.68

GND

Q006

2.59

GND

3.24

Q053

0.00

5.00

2.59

Q453

0.00

8.66

GND

Q820

130.30

0.00

130.70

Q007

2.68

GND

3.33

Q054

0.00

5.01

2.68

Q501

0.36

85.20

0.00

Q830

129.80

127.78

130.40

Q008

2.65

GND

3.31

Q055

0.00

5.01

2.65

Q505

2.46

4.98

2.32

Q2350

5.22

GND

2.70

Q005

Q009

0.59

0.00

GND

Q090

1.31

0.00

2.04

Q520

1.76

4.98

1.60

Q050

4.98

GND

2.59

Q092

8.92

2.37

4.99

Q551

0.00

-25.30
GND

Q051

4.97

GND

2.69

Q451

0.60

0.00

GND

Q605

4.05

0.00

4.01

A-Board waveforms & voltages

- 30 -

A-Board integrated circuit voltages

1

.....0.00

2

.....1.39

3

.....4.98

4

.....4.91

5

.....2.47

6

.....4.95*

7

.....2.43

8

.....4.99

9

.....2.36

10

.....2.90

11

.....4.95

12

.....GND

13

.....2.47

14

.....4.97

15

.....n.c

16

.....4.98*

17

.....2.93

18

.....1.35

19

.....3.21

20

.....0.52

21

.....GND

22

.....0.62

23

.....1.69

24

.....1.09

25

.....0.45

26

.....0.95

27

.....2.06

28

.....2.59

29

.....3.26

30

.....2.69

31

.....GND

32

.....2.67

33

.....4.98

34

.....2.85

35

.....2.68

36

.....2.37

37

.....2.41

38

.....3.51

39

.....n.c

40

.....2.49

IC001

41

......GND

42

......4.97

43

......2.32

44

......1.76

45

......4.46

46

......4.20

47

......0.00

48

......4.97

49

......4.96

50

......0.00

51

......4.97

52

......0.17

53

......n.c

54

......0.17

55

......4.97

56

......0.00

57

......4.97

58

......4.97

59

......0.00

60

......4.16

61

......0.00

62

......4.45

63

......0.00

64

......0.39

65

......n.c

66

......0.00

67

......0.00

68

......1.94

69

......4.98

70

......4.98

71

......4.97

72

......4.98

73

......0.00

74

......4.96

75

......1.95

76

......0.18

77

......2.16

78

......0.00

79

......2.28

80

......2.40

IC002

1

..... GND

2

..... GND

3

..... GND

4

..... GND

5

......4.40

6

......4.16

7

..... GND

8

......4.99

IC005

1

......5.01

2

..... GND

3

......1.32

4

......3.26

5

..... GND

6

......5.01

IC006

1

......5.00*

2

......4.98

3

..... GND

IC050

1

......2.59

2

......3.20

3

......3.21

4

......2.69

5

......0.00

6

......0.00

7

..... GND

8

......2.67

9

......3.21

10

..... n.c

11

..... n.c

12

..... n.c

13

......0.00

14

......4.99

1

..... 1.16

2

..... 2.17

3

..... 2.16

4

..... 2.23

5

..... 2.17

6

..... 0.43

7

..... 4.91

8

..... 2.42

9

..... 2.47

10

..... 0.51

11

..... 2.26

12

..... 0.00

10
11
12
13

IC2201

13
14
15
16
17
18
19
20
21
22
23
24

IC451

1

.....8.18

2

.....8.66

3

.....4.10

4

.....4.15

5

.....GND

6

.....3.92

7

.....3.99

8

. . . . 24.32

9

.....1.79

.....1.32

.....GND

. . . . 14.01

. . . . 24.67

IC551

1

. . . . 12.00

2

.....GND

3

.....8.95

IC552

1

. . . . 12.01

2

.....GND

3

.....5.00

IC553

1

.....8.96

2

.....GND

3

.....4.99

IC801

1

. . . 193.00

2

.....GND

3

.....GND

4

. . . . 32.80

5

.....2.81

.....3.34

.....2.16

.....3.29

.....3.45

.....GND

.....4.97

.....0.20

.....n.c

.....2.24

.....2.20

.....n.c

.....n.c

IC2301

1

.....14.00

2

......0.00

3

.....13.70

4

......0.00

5

......9.90

6

......2.71

7

.....16.81

8

..... GND

9

......4.98

10

......8.80

11

......3.41

12

.....18.81

IC2302

1

.....13.58

2

......0.00

3

.....13.62

4

......0.00

5

......9.88

6

......2.69

7

.....16.65

8

..... GND

9

......4.97

10

......8.80

11

......3.55

12

.....18.73

IC003

1

......4.96

2

..... GND

3

......4.98

- 31 -

A-Board IC voltages

®

PrintedinUSA

K02052597PL0516