Panasonic CT25G5B - 25" COLOR TV User manual

Panasonic
The service technician is required to read and follow the “Safety Precautions” and “Important Safety Notice” in this Main Manual.
Service Manual
Color Television
(NA6LV)
Main Manual
Copyright 2000 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
“WARNING! This Service Manual is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death.”
Chassis
CT-25G5B AP356M
CT-25G5UB AP356M
Models
ORDER NO. MTNC000664A1
B5
This Simplified Service Manual is issued to add listed models to the main Service Manual order No.
MTNC000146C1(CT-27G5B/CB/UB). A full set of Schematics, Pictures and a complete Parts List are included in this
Simplified Manual. Please file and use this Service Manual together with the Main Service Manual, order No.
MTNC000146C1(CT-27G5B/CB/UB).
Simplified
®

- 2 -
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
An Isolation Transformer should always be used
during 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, such as
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
heavy gloves for protection. 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 37.69kV without causing
X-ray radiation.
Before returning a serviced receiver to the owner,
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 connect a 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 1.5kΩ10 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 1/2 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.
X-ray Radiation
WARNING: The potential source of X-ray radiation in the
TV set is in the High Voltage section and the picture tube.
Note: It is important to use an accurate, calibrated
high voltage meter.
Set the brightness, picture, sharpness and color
controls to Minimum. Measure the High Voltage. The
high voltage should be 29.25kV ± 1.25kV. If the upper
limit is out of tolerance, immediate service and
correction is required to insure safe operation and to
prevent the possibility of premature component failure.
Horizontal Oscillator Disable Circuit Test
This test must be performed as a final check before the
Receiver is returned to the customer. See Horizontal
Oscillator Disable Circuit Procedure Check in
this manual.
0.15µF
COLD
WATER
PIPE
(GROUND)
TO INSTRUMENT’S
EXPOSED METAL
PARTS 1500Ω,10 W
AC VOLTMETER
Figure 1. Hot Check Circuit

- 3 -
Important Safety Notice . . . . . . . . . . . . . . . . . . .2
Safety Precautions. . . . . . . . . . . . . . . . . .2
Service Notes . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Horizontal Oscillator Disable Circuit. . . . .5
Receivers Feature Table. . . . . . . . . . . . . . . . . . .6
Location of Controls (Receiver)
Receiver Front Control Panel. . . . . . . . . .7
Location of Controls (Remote)
EUR501450 . . . . . . . . . . . . . . . . . . . . . . .8
Component Identification. . . . . . . . . . . . . . . . . .9
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
SCHEMATICS AND VOLTAGES
A-Board . . . . . . . . . . . . . . . . . . . . . . . . Sheet-1A
C-Board . . . . . . . . . . . . . . . . . . . . . . . . Sheet-1B
WAVEFORMS. . . . . . . . . . . . . . . . . . . . . Sheet-1B

- 4 -
Service Notes
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 1.6kΩresistor, 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.
How to Replace Flat-IC
- Required Tools -
1. Remove the solder from all of the pins of a Flat-IC
by using a de-solder braid.
2. Put the iron wire under the pins of the Flat-IC and
pull it in the direction indicated while heating the
pins using a soldering iron. A small awl can be
used instead of the iron wire.
3. Remove the solder from all the pads of the Flat-IC
by using a de-solder braid.
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.
5. Solder all pins to the soldering pads using a fine
tipped soldering iron.
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.
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.
c
b
e
Chip Components
TRANSISTOR CAPACITOR
RESISTOR
MH DIODE
SOLDER
CAPS
SOLDER
CAPS
1ST DIGIT 2ND DIGIT
MULTIPLIER
=1600 = 1.6k
GRADE
TYPE
COMMON
ANODES
CATHODE
•Soldering iron •De-solder braids
•Iron wire or small awl •Magnifier
Flat-IC
De-Solder
Braid
Pull
Iron
Wire
Awl
Soldering
Iron
Soldering
Iron
Soldering
Iron
De-Solder
Braid
Flat IC
123.........
Polarity Symbol
Soldering
Iron
Solder
De-Solder
Braid
Solder
Bridge Soldering
Iron

- 5 -
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.
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.
Horizontal Oscillator Disable Circuit
This chassis employs a special circuit to protect
against excessive high voltage and beam current. If, for
any reason, the high voltage and beam current exceed
a predetermined level this protective circuit activates
and detunes the horizontal oscillator that limits the high
voltage. The over-voltage protection circuit is not
adjustable. However, if components indicated by the
symbol on the schematic in either the horizontal
sweep system or the over-voltage protection circuit
itself are changed, the operation of the circuit should
be checked using the following procedure:
Equipment needed to check the disabled circuit:
1. Voltmeter (0 - 200V scale)
2. High Voltage Meter (0- 50kV)
3. Variac or Isolation Transformer
Procedure:
1. Tune in a station to verify that the horizontal is
in sync.
2. Obtain a Monoscope pattern or a signal generator
crosshatch pattern
3. Connect the voltmeter (-) lead to TPD2 and the (+)
lead to TPD1 (junction of D555 anode, R556 &
R557). Set Bright level to (0) and Picture for a 1.8
volt reading on the voltmeter.
4. Turn the Receiver OFF. Connect a jumper across
IC803 pin 3 and pin 4. Apply +9V DC to cathode of
D001.
5. Reduce the AC supply voltage to approximately
45V. Connect the high voltage meter to the CRT
anode. (H.V. button).
Note: Use the Dag Ground (C10 on the CRT Board)
to connect the (-) lead of the meter.
6. Turn the Receiver ON. Slowly increase the AC
supply voltage and verify that the high voltages
does not exceed 37.1kV when horizontal; just
begins to pull out of sync. If the high voltage is not
within the specified limit, the cause must be
determined and corrected before the Receiver is
returned to the customer.

- 6 -
Receiver Feature Table
FEATURE\MODEL CT-25G5B/UB
Chassis NA6LV
Tunning system 40K
# of channels 181
Menu language Eng/Span/Fr
Closed Caption X
V-Chip X
75 Ωinput X
Remote Model # EUR501450
Picture tube A63QDB891X
Notch filter P
V/A norm V
AI Sound X
Built-in audio power 1.5Wx2 (10%)
# of speakers 2
A/V in (rear/front) 2(1/1)
Dimensions mm
(WxDxH) in 600x665x634 23.62x26.18x24.96
Weight (kg/lbs) 34.25/75.35
Power source (V/Hz) 120/60
Anode voltage 29.25kV ± 1.25kV
Video input jack 1Vp-p 75Ω, phono jack
Audio input jack 500mV RMS 47kΩ
A-Board TNP2AH018 AB
C-Board TNP2AA062 AD
Table 1. Receiver Features
Specifications are subject to change without notice or obligation.
Dimensions and weights are approximate.

- 7 -
Location of Controls (Receiver)
Quick Reference Control Operation
Quick Reference
Control Operation
Power Button - Press to turn ON or OFF.
Volume Buttons - Press to adjust Sound Level, or to adjust Audio Menus, Video
Menus, and select operating features when menus are displayed
Channel Buttons - Press to select programmed channels. Press to highlight desired
features when menus are displayed. Also use to select Cable Converter box channels
after programming Remote Control Infra-red codes (the TV/AUX/CABLE switch must
be set in CABLE position).
Action Button - Press to display Main Menu and access On Screen feature and
Adjustment Menus.
TV/Video Button - Press to select TV or Video Input.
1 2 4 53
POWER VOLUME CHANNEL ACTION TV/VIDEO
Remote Control
Sensor
Figure 2. Location of Controls (Receiver).
1
2
3
4
5

- 8 -
Location of Controls (Remote) Cont.
Figure 3. Location of Controls (Remote).
Power Button
Press to turn ON and OFF.
Mute Button
Press to mute sound. A second press
resumes sound. Press also to access
and delete Closed Caption display.
TV/Video Button
Press to select TV or Video input.
Volume Buttons
Press to adjust TV sound level. Use
with Channel buttons to navigate in
menus.
Channel Buttons
Press to select channels. Use with
volume buttons to navigate in menus.
Action Button
Press to display Main Menu and
access or exit On Screen features and
Adjustment Menus.
Keypad Buttons
Press desired channel number to
randomly access any channel.
R-Tune (Rapid Tune) Button.
Press to switch to the previous
channel.
Recall Button
Press to display Time, status of Sleep
Timer, Channel, Video mode and
Channel Caption (Station Identifier).
EUR501450

- 9 -
Component Identification
Figure 4. Back of Television
Figure 5. C-Board
1 screw 1 screw 1 screw
1 screw
1 screw 1 screw
1 screw

- 10 -
Component Identification (cont.)
Figure 6. Television’s rear view with cover removed.
Figure 7. Main Board .
Anode (High Voltage) CRT secured by 4 screws
Deflexion Yoke
C-Board
Audio/Video Inputs T551 FlybackA-Board
Tuner
Degaussing
Coil
Tuner
IC001 MPU
IC101 VCJ
T551 Flyback
IC2304
Audio Out IC2303 Audio Out Audio/Video Inputs Fuse
Front Keypad
Remote Control Sensor
IC451 V Out

REPLACEMENT PARTS LIST
Model: CT-25G5B/UB
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.
- 11 -
158-00
PARTS LIST
Parts List
REF NO. PART NO. DESCRIPTION
CAPRISTORS
CRA801 EXNFGV RES-CAP
CRA802 EXNFGV RES-CAP
CAPACITORS
C001 ECA1AM101 CAP,E 100UF/10V
C003 ECA1HM4R7 CAP,E 4.7UF/50V
C004 ECJ2VC1H330J CAP,C 33PF-J-50V
C005 ECJ2VC1H330J CAP,C 33PF-J-50V
C008 ECJ2VF1H104Z CAP,C .1UF-Z-50V
C010 ECJ2VF1H103Z CAP,C .01UF-Z-50V
C011 ECA1CM221 CAP,E 220UF/16V
C013 ECA0JM101 CAP,E 100UF/6.3V
C016 ECJ2VC1H101J CAP,C 100PF-J-50V
C017 ECJ2VC1H220J CAP,C 22PF-J-50V
C018 ECJ2VC1H220J CAP,C 22PF-J-50V
C019 ECA0JM101 CAP,E 100UF/6.3V
C020 ECA0JM101 CAP,E 100UF/6.3V
C022 ECA1CM471 CAP,E 470UF/16V
C024 ECA1HM4R7 CAP,E 4.7UF/50V
C025 ECJ2VC1H101J CAP,C 100PF-J-50V
C026 ECA1HM010 CAP,E 1.0UF/50V
C031 ECJ2VB1H821K CAP,C 820PF-K-50V
C032 ECA1AM470 CAP,E 47UF/10V
C033 ECJ2VC1H101J CAP,C 100PF-J-50V
C035 ECJ2VC1H220J CAP,C 22PF-J-50V
C036 ECJ2VC1H220J CAP,C 22PF-J-50V
C037 ECJ2VC1H220J CAP,C 22PF-J-50V
C038 ECJ2VC1H220J CAP,C 22PF-J-50V
C101 ECJ2VF1H223Z CAP,C .022UF-Z050V
C102 ECA1EM100 CAP,E 10UF/25V
C103 ECJ2VC1H300J CAP,C 30PF-J-50V
C105 ECJ2VC1H221J CAP,C 220PF-J-50V
C106 ECA1HMR47 CAP,E .47UF/50V
C107 ECJ2VC1H390J CAP,C 39PF-J-50V
C108 ECA1HMR22 CAP,E .22UF/50V
C109 EEANA1E4R7B CAP,E 4.7UF-25V
C110 ECJ2VF1H103Z CAP,C .01UF-Z-50V
C111 ECA1EM100 CAP,E 10UF/25V
C113 ECA1EM100 CAP,E 10UF/25V
C117 ECJ2VC1H120J CAP,C 12PF-J-50V
C151 ECA1HMR22 CAP,E .22UF/50V
C201 ECJ2VF1H103Z CAP,C .01UF-Z-50V
C202 ECJ2VC1H101J CAP,C 100PF-J-50V
C203 ECA1HM4R7 CAP,E 4.7UF/50V
C301 ECJ2VC1H390J CAP,C 39PF-J-50V
C302 EEANA1E1R0B CAP,E 1.0UF-25V
C304 ECEA1HNR47U CAP,E .47UF-50V
C305 ECA1HM4R7 CAP,E 4.7UF/50V
C306 ECA1CM221 CAP,E 220UF/16V
C308 ECQB1H823JM CAP,P .082UF-J-50V
C309 ECA1AM101 CAP,E 100UF/10V
C310 ECA1HM4R7 CAP,E 4.7UF/50V
C311 ECA1HM4R7 CAP,E 4.7UF/50V
C312 ECA1EM220 CAP,E 22UF/25V
C314 ECJ2VF1H104Z CAP,C .1UF-Z-50V
C351 ECJ2VB1H391K CAP,C 390PF-K-50V
C352 ECJ2VB1H391K CAP,C 390PF-K-50V
C353 ECJ2VB1H471K CAP,C 470PF-K-50V
C354 ECKD3D102KB CAP,C .001UF-K-2KV
C357 EEANA1E1R0B CAP,E 1.0UF-25V
C370 ECA1HM100 CAP,E 10UF/50V
C401 ECQB1H153JM CAP,P .015UF-J-50V
C402 ECJ2VB1H471K CAP,C 470PF-K-50V
C403 ECA1HM2R2 CAP,E 2.2UF/50V
C451 ECA1AM470 CAP,E 47UF/10V
C452 ECSF1EE105 CAP,T 1.0UF/25V
C453 EEUFC1H1R0B CAP,E 1.0UF-50V
C454 ECA1EM102 CAP,E 1000UF/25V
C455 ECA1VHG101B CAP,E 100UF-35V
C456 ECQB1H103JM CAP,P .01UF-J-50V
C459 ECA1VM471 CAP,E 470UF/35V
C460 ECQM1104JZ CAP,P .1UF-J-100V
C462 ECA1EM100 CAP,E 10UF/25V
C502 ECQB1H223JM CAP,P .022UF-J-50V
C503 ECA1HM2R2 CAP,E 2.2UF/50V
C504 ECJ2VC1H101J CAP,C 100PF-J-50V
C505 ECJ2VU1H221J CAP,C 220PF-J-50V
C506 ECA1CM221 CAP,E 220UF/16V
C507 ECJ2VC1H271J CAP,C 270PF-J-50V
C508 ECJ2VC1H121J CAP,C 120PF-J-50V
C510 ECCD2H100D CAP,C 10PF-D-500V
C511 ECKD2H821KB CAP,C 820PF-K-500V
C512 ECKD2H101KB CAP,C 100PF-K-500V
C531 ECA1EM220 CAP,E 22UF/25V
C532 ECA1AM102 CAP,E 1000UF/10V
C533 ECJ2VF1H103Z CAP,C .01UF-Z-50V
C534 ECJ2VF1H103Z CAP,C .01UF-Z-50V
C551 ECA1VM331 CAP,E 330UF/35V
C552 ECA1EM471 CAP,E 470UF/25V
C553 ECKD2H561KB CAP,C 560PF-K-500V
C554 ECKD2H561KB CAP,C 560PF-K-500V
C555 ECA2EM220 CAP,E 22UF-250V
C556 ECA1CM471 CAP,E 470UF/16V
C557 ECKD2H102KB CAP,C .001UF-K-500V
C559 ECA1HM220 CAP,E 22UF/50V
C560 EEANA1E2R2B CAP,E 2.2UF-25V
C561 ECKD2H561KB CAP,C 560PF-K-500V
C563 ECWH12H822JS CAP,P .0082UF-J-1.2KV
C564 ECWH12H332JS CAP,P .0033UF-J-1.2KV
C565 ECKD3D471JB CAP,C 470PF-J-2KV
C566 ECKD3D181JB CAP,C 180PF-J-2KV
C568 ECWF2274JBB CAP,M .27UF-J-200V
REF NO. PART NO. DESCRIPTION

- 12 -
Parts List
REPLACEMENT PARTS LIST
Model: CT-25G5B/UB
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.
158-00
PARTS LIST
C569 ECWF2564JBB CAP,M .56UF-J-200V
C571 ECA1EM220 CAP,E 22UF/25V
C572 ECA1EM100 CAP,E 10UF/25V
C573 ECA1CM101 CAP,E 100UF/16V
C601 ECJ2VC1H181J CAP,C 180PF-J-50V
C602 ECJ2VC1H680J CAP,C 68PF-J-50V
C604 ECJ2VU1H150J CAP,C 15PF-J-50V
C605 ECJ2VB1H332K CAP,C .0033UF-K-50V
C606 ECA1HM010 CAP,E 1.0UF/50V
C801 ECKDAE472ZED CAP,C .4700PF-Z-250VAC
C802 ECKDAE472ZED CAP,C .4700PF-Z-250VAC
C805 EC0S2DA221BB CAP,E 220UF/200V
C806 EC0S2DA221BB CAP,E 220UF/200V
C807 ECA1HM4R7 CAP,E 4.7UF/50V
C808 ECA1CM101 CAP,E 100UF/16V
C809 EC0S2DG151DG CAP,E 151UF/200V
C810 ECQU2A153MV CAP,P .015UF-M-250V
C811 ECQU2A153MV CAP,P .015UF-M-250V
C812 ECQU2A224MV CAP,P .22UF-M-250VAC
C814 ECQB1H333JM CAP,P .033UF-J-50V
C815 ECA1EHG101B CAP,E 100UF-25V
C818 ECKD3A821KB CAP,C 820PF-K-1KVDC
C820 ECA1JHG100B CAP,E 10UF-63V
C823 ECA160V33UE CAP,E 33UF/160V
C824 ECKD3A331KB CAP,C 330PF-K-1KV
C825 ECKD3A471KB CAP,C 470PF-K-1KV
C2201 ECA1HM4R7 CAP,E 4.7UF/50V
C2202 ECA1HM2R2 CAP,E 2.2UF/50V
C2203 ECA1HM4R7 CAP,E 4.7UF/50V
C2204 AP106K016CAE CAP,T 10UF/16V
C2205 ECA1HMR33 CAP,E .33UF/50V
C2206 ECQB1H223JM CAP,P .022UF-J-50V
C2207 AP335K016CAE CAP,T 3.3UF/16V
C2208 ECJ2VB1C104K CAP,C .1UF-I-16V
C2209 ECJ2VB1C104K CAP,C .1UF-I-16V
C2210 ECJ2VB1C104K CAP,C .1UF-I-16V
C2212 ECQB1H473JM CAP,P .047UF-J-50V
C2215 ECA0JM101 CAP,E 100UF/6.3V
C2218 ECA1HMR47 CAP,E .47UF/50V
C2220 EEANA1E100B CAP,E 10UF-25V
C2302 ECA1HM3R3 CAP,E 3.3UF/50V
C2303 ECA1CM100 CAP,E 10UF/16V
C2304 ECQB1H104JM CAP,P .1UF-J-50V
C2306 ECA1CM471 CAP,E 470UF/16V
C2307 EEANA1E1R0B CAP,E 1.0UF-25V
C2309 ECA1HM010 CAP,E 1.0UF/50V
C2310 ECJ2VB1H222K CAP,C .0022UF-K-50V
C2311 ECA1HM4R7 CAP,E 4.7UF/50V
C2351 ECA1EM102 CAP,E 1000UF/25V
C2352 ECA1HM3R3 CAP,E 3.3UF/50V
C2353 ECA1CM100 CAP,E 10UF/16V
C2354 ECQB1H104JM CAP,P .1UF-J-50V
REF NO. PART NO. DESCRIPTION
C2356 ECA1CM471 CAP,E 470UF/16V
C2357 EEANA1E1R0B CAP,E 1.0UF-25V
C2358 ECJ2VB1H222K CAP,C .0022UF-K-50V
C3001 ECA1HM010 CAP,E 1.0UF/50V
C3002 ECA1HM010 CAP,E 1.0UF/50V
C3003 ECA1HM010 CAP,E 1.0UF/50V
C3005 ECJ2VB1H122K CAP,C .0012UF--J-50V
C3006 ECJ2VB1H122K CAP,C .0012UF--J-50V
DIODES
D001 ERA15-01 DIODE
D002 MA165 DIODE
D003 MA4047H DIODE
D006 MA4330H DIODE
D008 MA165 DIODE
D009 MA165 DIODE
D011 MA165 DIODE
D014 MA165 DIODE
D015 MA165 DIODE
D016 MA165 DIODE
D017 MA165 DIODE
D052 MA4068M DIODE, ZENER
D451 ERA15-01 DIODE
D452 MA4047M DIODE, ZENER
D453 MA165 DIODE
D461 MA27WTA DIODE
D501 MA4082L DIODE
D531 AS01 DIODE
D532 MA4062L DIODE
D551 TVSRU2N DIODE
D553 AU02 DIODE
D554 AU02 DIODE
D555 MA165 DIODE
D556 MA4360H DIODE, ZENER
D558 RS3FS DIODE
D559 BYD33G-113 DIODE
D560 MA165 DIODE
D561 AU02 DIODE
D801 GP15KL-042 DIODE
D802 GP15KL-042 DIODE
D805 TRPW5B0M050D THERMISTOR
D806 MA4056M DIODE
D807 MA165 DIODE
D820 EU02V1 DIODE
D821 EU02V1 DIODE
D822 EU02V1 DIODE
D823 RL30A DIODE
D824 EU02V1 DIODE
D825 TVSSR2KL DIODE, PROTECTION
D826 EU02V1 DIODE
D829 MA165 DIODE
D2302 MA165 DIODE
D2312 MA4068M DIODE, ZENER
REF NO. PART NO. DESCRIPTION

REPLACEMENT PARTS LIST
Model: CT-25G5B/UB
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.
- 13 -
158-00
PARTS LIST
Parts List
D3001 MA165 DIODE
D3002 MA4110M DIODE, ZENER
D3004 MA4110M DIODE, ZENER
D3005 MA4110M DIODE, ZENER
D3010 MA4110M DIODE, ZENER
D3011 MA4110M DIODE, ZENER
D3016 MA3056M DIODE
FUSES
F801 XBA2A00101 FUSE 6.3A 125V
INTEGRATED CIRCUITS
IC001 MN1874088TL3 INT CKT
IC002 M24C04-WBN6 INT CKT
IC003 PIC-26042SR INT CKT
IC101 AN5166K INT CKT
IC451 LA7838 INT CKT
IC551 AN78M09 PLUS 9V AVR
IC552 AN78M05 PLUS 5V AVR
IC801 PC817X2 INT CKT
IC803 STR58041A INT CKT
IC2201 AN5829S-E1V INT CKT
IC2303 LA4285 INT CKT
IC2304 LA4285 INT CKT
COILS
L001 TLTABT2R2K COIL, PEAKING 2.2UH
L002 ELESN390KA COIL, PEAKING 39UH
L003 TLTABT2R2K COIL, PEAKING 2.2UH
L004 TLTABT2R2K COIL, PEAKING 2.2UH
L006 EXCELSA24T FERRITE BEAD
L008 TLTABT470K COIL, PEAKING 47UH
L009 EXCELSA35 FERRITE BEAD
L012 EXCELSA24T FERRITE BEAD
L013 EXCELSA35 FERRITE BEAD
L014 ELESN471JA COIL, PEAKING 470UH
L103 ELESN150JA COIL, PEAKING 15UH
L104 TLTABT1R0K COIL, PEAKING 1.0UH
L105 EIV7EN053B COIL, VCO
L106 ELESN180JA COIL, PEAKING 18UH
L351 TLTABT101K COIL, PEAKING
L551 TLH6663P COIL, LINEARITY
L602 ELESN120JA COIL, PEAKING 12UH
L801 ELF17N017A LINE FILTER
L802 ELEIE680KA COIL, PEAKING 68UH
L804 EXCELSA39 FERRITE BEAD
L2302 TLTABT4R7K COIL, PEAKING 4.7UH
TRANSISTORS
Q001 2SD601ARTX TRANSISTOR
Q002 2SC1685QRS TRANSISTOR
Q003 2SB709ARTX TRANSISTOR
Q004 2SB709ARTX TRANSISTOR
Q302 2SD601ARTX TRANSISTOR
Q304 2SD601ARTX TRANSISTOR
REF NO. PART NO. DESCRIPTION
Q351 2SC3063 TRANSISTOR
Q352 2SC3063 TRANSISTOR
Q353 2SC3063 TRANSISTOR
Q430 2SD601ARTX TRANSISTOR
Q451 2SD601ARTX TRANSISTOR
Q452 2SD601ARTX TRANSISTOR
Q501 2SC4212H TRANSISTOR
Q551 2SD2539MA1 TRANSISTOR
Q801 2SC1685RSTA TRANSISTOR
Q802 2SC1384RS TRANSISTOR
Q804 2SA1767Q TRANSISTOR
Q2309 2SB709ARTX TRANSISTOR
Q3001 2SD601ARTX TRANSISTOR
RELAYS
RL801 TSEH0005 RELAY
RESISTORS
R002 ERJ6GEYJ182 RES,M 1.8K-J-1/10
R003 ERJ6GEYJ562 RES,M 5.6K-J-1/10
R004 ERDS1TJ181 RES,C 180-J-1/2
R005 ERJ6GEYJ101 RES,M 100-J-1/10
R006 ERJ6GEYJ102 RES,M 1K-J-1/10
R007 ERJ6GEYJ102 RES,M 1K-J-1/10
R008 ERJ6GEYJ562 RES,M 5.6K-J-1/10
R010 ERJ6GEYJ154 RES,M 150K-J-1/10
R011 ERJ6GEYJ684 RES,M 680K-J-1/10
R012 ERJ6GEYJ473 RES,M 47K-J-1/10
R014 ERJ6GEYJ472 RES,M 4.7K-J-1/10
R015 ERJ6GEYJ472 RES,M 4.7K-J-1/10
R016 ERJ6GEYJ472 RES,M 4.7K-J-1/10
R017 ERJ6GEYJ472 RES,M 4.7K-J-1/10
R020 ERJ6GEYJ564 RES,M 560K-J-1/10
R021 ERJ6GEYJ101 RES,M 100-J-1/10
R022 ERJ6GEYJ101 RES,M 100-J-1/10
R023 ERJ6GEYJ102 RES,M 1K-J-1/10
R025 ERJ6GEYJ223 RES,M 22K-J-1/10
R027 ERJ6GEYJ103 RES,M 10K-J-1/10
R028 ERJ6GEYJ103 RES,M 10K-J-1/10
R030 ERJ6GEYJ102 RES,M 1K-J-1/10
R032 ERJ6ENF1002 RES,M 10K-F-1/10
R033 ERJ6GEYJ222 RES,M 2.2K-J-1/10
R034 ERJ6GEYJ222 RES,M 2.2K-J-1/10
R035 ERJ6GEYJ332 RES,M 3.3K-J-1/10
R036 ERJ6GEYJ562 RES,M 5.6K-J-1/10
R037 ERJ6GEYJ103 RES,M 10K-J-1/10
R038 ERJ6GEYJ223 RES,M 22K-J-1/10
R039 ERJ6GEYJ102 RES,M 1K-J-1/10
R046 ERJ6GEYJ102 RES,M 1K-J-1/10
R048 ERJ6GEYJ221 RES,M 220-J-1/10
R049 ERJ6GEYJ221 RES,M 220-J-1/10
R053 ERJ6GEYJ103 RES,M 10K-J-1/10
R055 ERJ6GEYJ103 RES,M 10K-J-1/10
REF NO. PART NO. DESCRIPTION

- 14 -
Parts List
REPLACEMENT PARTS LIST
Model: CT-25G5B/UB
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.
158-00
PARTS LIST
R060 ERJ6GEYJ102 RES,M 1K-J-1/10
R065 ERJ6GEYJ471 RES,M 470-J-1/10
R066 ERJ6GEYJ222 RES,M 2.2K-J-1/10
R067 ERJ6GEYJ222 RES,M 2.2K-J-1/10
R068 ERJ6GEYJ222 RES,M 2.2K-J-1/10
R070 ERJ6GEYJ101 RES,M 100-J-1/10
R101 ERJ6GEYJ750 RES,M 75-J-1/10
R102 ERJ6GEYJ683 RES,M 68K-J-1/10
R103 ERJ6GEYJ183 RES,M 18K-J-1/10
R104 ERJ6GEYJ561 RES,M 560-J-1/10
R105 ERJ6GEYJ561 RES,M 560-J-1/10
R107 ERJ6GEYJ222 RES,M 2.2K-J-1/10
R108 ERJ6GEYJ471 RES,M 470-J-1/10
R152 ERJ6GEYJ183 RES,M 18K-J-1/10
R153 ERJ6GEYJ223 RES,M 22K-J-1/10
R154 ERJ6GEYJ393 RES,M 39K-J-1/10
R201 ERJ6GEYJ471 RES,M 470-J-1/10
R202 ERJ6GEYJ682 RES,M 6.8K-J-1/10
R203 ERJ6GEYJ222 RES,M 2.2K-J-1/10
R303 ERJ6GEYJ682 RES,M 6.8K-J-1/10
R304 ERJ6GEYJ332 RES,M 3.3K-J-1/10
R305 ERJ6ENF3001 RES,M 3K-F-1/10
R306 ERJ6ENF1801 RES,M 1.8K-F-1/10W
R307 ERJ6GEYJ564 RES,M 560K-J-1/10
R308 ERJ6GEYJ102 RES,M 1K-J-1/10
R309 ERJ6GEYJ683 RES,M 68K-J-1/10
R310 ERJ6GEYJ273 RES,M 27K-J-1/10
R311 ERJ6GEYJ185 RES,M 1.8MEG-J-1/10W
R317 ERJ6GEYJ684 RES,M 680K-J-1/10
R319 ERJ6GEYJ122 RES,M 1.2K-J-1/10
R320 ERJ6GEYJ102 RES,M 1K-J-1/10
R351 ERG2FJ123H RES,M 12K-J-2W
R352 ERG2FJ123H RES,M 12K-J-2W
R353 ERG2FJ123H RES,M 12K-J-2W
R354 ERDS1TJ272 RES,C 2.7K-J-1/2
R355 ERDS1TJ272 RES,C 2.7K-J-1/2
R356 ERDS1TJ272 RES,C 2.7K-J-1/2
R357 ERJ6GEYJ301 RES,M 300-J-1/10
R358 ERJ6GEYJ301 RES,M 300-J-1/10
R359 ERJ6GEYJ301 RES,M 300-J-1/10
R360 ERJ6GEYJ102 RES,M 1K-J-1/10
R361 ERJ6GEYJ102 RES,M 1K-J-1/10
R362 ERJ6GEYJ102 RES,M 1K-J-1/10
R363 ERJ6GEYJ101 RES,M 100-J-1/10
R364 ERJ6GEYJ101 RES,M 100-J-1/10
R365 ERJ6GEYJ101 RES,M 100-J-1/10
R370 ERDS2TJ224 RES,C 220K-J-1/4
R371 ERDS2TJ393 RES,C 39K-J-1/4
R401 ERJ6GEYJ102 RES,M 1K-J-1/10
R430 ERJ6GEYJ103 RES,M 10K-J-1/10
R432 ERJ6GEYJ102 RES,M 1K-J-1/10
R451 ERDS1FJ1R0 RES,C 1.0-J-1/2
REF NO. PART NO. DESCRIPTION
R453 ERJ6GEYJ224 RES,M 220K-J-1/10
R454 ERJ6GEYJ473 RES,M 47K-J-1/10
R455 ERJ6GEYJ153 RES,M 15K-J-1/10
R456 ERJ6GEYJ243 RES,M 24K-J-1/10
R457 ERJ6GEYJ122 RES,M 1.2K-J-1/10
R458 ERJ6GEYJ273 RES,M 27K-J-1/10
R459 ERJ6GEYJ683 RES,M 68K-J-1/10
R460 ERDS2TJ102 RES,C 1K-J-1/4
R462 ERJ6GEYJ473 RES,M 47K-J-1/10
R463 ERJ6GEYJ473 RES,M 47K-J-1/10
R464 ERDS1FJ1R5 RES,C 1.5-J-1/2
R465 ERJ6GEYJ103 RES,M 10K-J-1/10
R466 ERJ6GEYJ103 RES,M 10K-J-1/10
R467 ERJ6GEYJ104 RES,M 100K-J-1/10
R468 ERJ6GEYJ101 RES,M 100-J-1/10
R469 ERJ6GEYJ220 RES,M 22-J-1/10
R471 ERJ6GEYJ223 RES,M 22K-J-1/10
R501 ERJ6GEYJ102 RES,M 1K-J-1/10
R502 ERJ6GEYJ562 RES,M 5.6K-J-1/10
R503 ERJ6GEYJ822 RES,M 8.2K-J-1/10
R504 ERJ6GEYJ561 RES,M 560-J-1/10
R505 ERJ6GEYJ682 RES,M 6.8K-J-1/10
R506 ERJ6GEYJ182 RES,M 1.8K-J-1/10
R507 ERJ6GEYJ392 RES,M 3.9K-J-1/10
R508 ERJ6GEYJ562 RES,M 5.6K-J-1/10
R509 ERDS2TJ331 RES,C 330-J-1/4
R510 ERG3FJ362H RES,M 3.6K-J-3W
R511 ERG3FJ362H RES,M 3.6K-J-3W
R512 ERG2FJ392H RES,M 3.9K-J-2W
R531 ERD25FJ470 RES,C 47-J-1/4W
R532 ERJ6ENF5602 RES,M 56K-F-1/10W
R533 ERJ6ENF2152 RES,M 21.5K-F-1/10W
R536 ERJ6GEYJ223 RES,M 22K-J-1/10
R537 ERJ6GEYJ473 RES,M 47K-J-1/10
R551 ERDS1FJ1R0 RES,C 1.0-J-1/2
R552 ERDS1FJ1R0 RES,C 1.0-J-1/2
R553 ERDS1FJ1R0 RES,C 1.0-J-1/2
R556 ERJ6GEYJ272 RES,M 2.7K-J-1/10
R557 ERJ6GEYJ103 RES,M 10K-J-1/10
R558 ERQ1CKPR33 RES,F .33-K-1W
R559 ERG2FJ683H RES,M 12K-J-2W
R560 ERG2FJ122H RES,M 12K-J-2W
R561 ERG2FJ102H RES,M 1K-J-2W
R562 ERG3FJ680H RES,M 68-J-3W
R563 ERDS2TJ393 RES,C 39K-J-1/4
R564 ERDS2TJ104 RES,C 100K-J-1/4
R565 ERJ6GEYJ103 RES,M 10K-J-1/10
R567 ERG2FJ471H RES,M 470-J-2W
R602 ERJ6GEYJ331 RES,M 330-J-1/10
R603 ERJ6GEYJ331 RES,M 330-J-1/10
R604 ERJ6GEYJ331 RES,M 330-J-1/10
R611 ERJ6GEYJ333 RES,M 33K-J-1/10
REF NO. PART NO. DESCRIPTION

REPLACEMENT PARTS LIST
Model: CT-25G5B/UB
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.
- 15 -
158-00
PARTS LIST
Parts List
R612 ERJ6GEYJ333 RES,M 33K-J-1/10
R613 ERJ6GEYJ333 RES,M 33K-J-1/10
R614 ERJ6GEYJ332 RES,M 3.3K-J-1/10
R801 ERF7ZK1R5 RES,W 1.5-K-7W
R805 ERDS2TJ274 RES,C 270K-J-1/4
R806 ERDS2TJ274 RES,C 270K-J-1/4
R808 ERDS1FJ1R0 RES,C 1.0-J-1/2
R809 ERDS1FJ1R0 RES,C 1.0-J-1/2
R810 ERDS1FJ272 RES,C 2.7K-J-1/2
R812 ERDS1TJ183 RES,C 18K-J-1/2
R813 ERJ6GEYJ562 RES,M 5.6K-J-1/10
R815 ERC12ZGM825 RES,S 8.2MEG-M-1/2
R820 ERJ6GEYJ153 RES,M 15K-J-1/10
R821 ERJ6GEYJ392 RES,M 3.9K-J-1/10
R822 ERD50FJ474 RES,C 470K-J-1/2W
R823 ERDS2TJ222 RES,C 2.2K-J-1/4
R824 ERG3FJ390 RES,M 39-J-3W
R825 ERJ6GEYJ102 RES,M 1K-J-1/10
R826 ERF2AKR22 RES,W .22-K-2W
R806 ERDS2TJ274 RES,C 270K-J-1/4
R827 ERDS1FJ561 RES,C 560-J-1/2
R828 ERG3FJ470H RES,M 47-J-3W
R829 ERQ14AJ180 RES,F 180-J-1/4
R2201 ERJ6GEYJ224 RES,M 220K-J-1/10
R2206 ERJ6GEYJ102 RES,M 1K-J-1/10
R2207 ERJ6GEYJ102 RES,M 1K-J-1/10
R2220 ERJ6GEYJ101 RES,M 100-J-1/10
R2301 ERQ2CJP120 RES,F 12-J-2W
R2303 ERD25FJ1R0 RES,C 1.0-J-1/4
R2306 ERJ6GEYJ682 RES,M 6.8K-J-1/10
R2311 ERJ6GEYJ122 RES,M 1.2K-J-1/10
R2312 ERJ6GEYJ392 RES,M 3.9K-J-1/10
R2313 ERJ6GEYJ683 RES,M 68K-J-1/10
R2314 ERJ6GEYJ104 RES,M 100K-J-1/10
R2317 ERJ6GEYJ681 RES,M 680-J-1/10
R2318 ERJ6GEYJ103 RES,M 10K-J-1/10
R2319 ERDS2TJ562 RES,C 5.6K-J-1/4
R2321 ERJ6GEYJ101 RES,M 100-J-1/10
R2322 ERJ6GEYJ472 RES,M 4.7K-J-1/10
R2353 ERD25FJ1R0 RES,C 1.0-J-1/4
R2356 ERJ6GEYJ682 RES,M 6.8K-J-1/10
R3001 ERJ6GEYJ473 RES,M 47K-J-1/10
R3002 ERJ6GEYJ104 RES,M 100K-J-1/10
R3005 ERJ6GEYJ750 RES,M 75-J-1/10
R3006 ERJ6GEYJ391 RES,M 390-J-1/10
R3009 ERJ6GEYJ682 RES,M 6.8K-J-1/10
R3010 ERJ6GEYJ334 RES,M 330K-J-1/10
R3011 ERJ6GEYJ682 RES,M 6.8K-J-1/10
R3012 ERJ6GEYJ334 RES,M 330K-J-1/10
R3013 ERJ6GEYJ682 RES,M 6.8K-J-1/10
R3014 ERJ6GEYJ682 RES,M 6.8K-J-1/10
REF NO. PART NO. DESCRIPTION
R3015 ERDS2TJ181 RES,C 180-J-1/4
R3016 ERDS2TJ181 RES,C 180-J-1/4
SWITCHES
S001 EVQPF106K SWITCH
S002 EVQPF106K SWITCH
S003 EVQPF106K SWITCH
S004 EVQPF106K SWITCH
S005 EVQPF106K SWITCH
S008 EVQPF106K SWITCH
S009 EVQPF106K SWITCH
TRANSFORMERS
T001 TLP16297 TRANSFORMER, POWER SUPPLY
T501 TLH15452 TRANSFORMER, HORIZONTAL D
T502 ETE19Z30AY TRANSFORMER, HORIZONTAL C
T551 KFT4AB143F TRANSFORMER, FLYBACK
T801 ETS28AE219NC TRANSFORMER
CRYSTALS/FILTERS
X001 TSSA010
X101 M1972M FILTER
X102 EFCS4R5MW5BA FILTER, BANDPASS
X201 SFSH4R5MDB CRYSTAL
X501 TAFCSB503F38 CRYSTAL, CLOCK
X601 TSS2AA001 CRYSTAL, 3.58MHZ
OTHERS
M001 A63QDB891X CRT 25”
M002 ETC33X82NA YOKE, CONVERGENCE
TNR001 ENV56D51G3 TUNER
M003 EUR501450 REMOTE CONTROL
M004 UR50EC1190A BATTERY COVER, REMOTE CON
M005 TAS2AA0012 SPEAKER 16-OHM 1.5W
M006 TBM2A10141 BADGE, PANASONIC
M007 TJSC00300 CRT SOCKET
M008 TKX2AA00403 GUIDE, IR
DY TLY2AA013 DEFLECTION YOKE
M009 TMM2A30702 WEDGE, YOKE
M010 TQB2AA0326-1 MANUAL, OWNERS
M011 TQB2AA7057 REMOTE GUIDE
M012 TQB2AA7075 V-CHIP CANADIAN
M013 TSX2AA0111 AC LINE CORD
M014 TXFBX012BSER ASSY, 7-KEY BUTTON
M015 TXFKU45BSER ASSY, CABINET BACK
M016 TXFKY23BSER ASSY, CABINET FRONT
M017 TXF3A0190DA ASSY., DAG GND
M018 0FMK014ZZ CONVERGENCE CORRECTOR STRIP
DEG 0LK19003-1A COIL, DEGAUSSING 25”
JK3001 TJB2A9064B ASSY. JACK A/V
JK3002 TJB2AA0046 TERMINAL, FRONT A/V
REF NO. PART NO. DESCRIPTION

- 16 -
SERVICEMAN MODE (ELECTRONIC CONTROL)
SERVICE ADJUSTMENT VALUES
Model _____________________________________________ Ser #_____________ Date_________________
Note: Record the original settings PRIOR to modifying the registers.
Mode Service
Adjustment Adjustment Range Def. Val. Original Value New Value
Sub Adjustments
B0 SUB-COLOR 0 ~ 63 35
B1 SUB-TINT 0 ~ 63 48
B2 SUB-
BRIGHTNESS 0 ~ 255 72
B3 SUB-PICTURE 0 ~ 63 25
B4 KILLER/ABL/
GAMMA 0 ~ 7 5
B5 VIDEO
ADJUSTMENT 0 ~ 15 8
B6 AUDIO
ADJUSTMENT 0 ~ 31 18
B7 V-SIZE 0 ~ 63 21
Cut-Off Adjustments
C0 CUT-OFF R 0 ~ 1
0 ~ 255 0 141
C1 CUT-OFF G 0 ~ 255 64
C2 CUT-OFF B 0 ~ 1
0 ~ 255 0 136
C3 DRIVE R 0 ~ 127 80
C4 DRIVE B 0 ~ 127 84
C5 YNR SWITCH 0 ~ 1 0
C6 AFT 0 ~ 1
0 ~ 255 1 112
C7 RF-AGC 0 ~ 127 64
C8 YNR VIDEO
ADJUSTMENT 0 ~ 7 0
C9 HORIZONTAL
CENTER 0 ~ 31 10
Ca BEAM LIMIT 0 ~ 7 4
Cb VCJ TEST H 0 ~ 2 0
MTS Adjustments
M0 INPUT LEVEL 0 ~ 63 31
M1 HIGH-LEVEL
SEPARATION 0 ~ 63 29
M2 LOW-LEVEL
SEPARATION 0 ~ 15 8
Mode Service
Adjustment Adjustment Range Def. Val. Original Value New Value
Options Adjustments
S0 PIP COLOR 0 ~ 127 100
S1 PIP CONTRAST 0 ~ 127 52
S2 UP 1/9 0 ~ 255 26
S3 DOWN 1/9 0 ~ 255 146
S4 LEFT 1/9 0 ~ 255 9
S5 RIGHT 1/9 0 ~ 255 103
S6 UP 1/16 0 ~ 255 26
S7 DOWN 1/16 0 ~ 255 163
S8 LEFT 1/16 0 ~ 255 9
S9 RIGHT 1/16 0 ~ 255 118
Sa FREERUN N/A N/A
Sb CLOCK
ADJUSTMENT 0 ~ 255 65
Sc PIP TINT 0 ~ 63 58
Sd LOUDNESS
COMPENSATION 0 ~ 63 52
Comb Filter Adjustments
X0 COMB GAIN 0 ~ 255 152
X1 COMB SWITCH 0 ~ 63 12
X2 COMB LIMIT 0 ~ 63 24
X3 COMB CORE 0 ~ 127 41
X4 COMB RF DELAY 0~127 20
X5 COMB VIDEO
DELAY 0~127 18
X6 COMB VMLM 0 ~ 127 90
X7 COMB VM SW 0 ~ 63 24
X8 COMB SHARP 0 ~ 255 30
X9 COMB VM LEVEL 0 ~ 255 255
Xa COMB VMPKF 0 ~ 1 1
Xb COMB ADJ
SHARP 0 ~ 63 15
Note: Some adjustments modes may not be
available in some models depending
on available options. Printed in USA
K00071708PL0714

CT-25G5B, CT-25G5UB
ABCDEFGH
1
2
3
4
5
MTNC000664A1
Side A
A-Board Schematic &
Voltages Sheet 1of 1
A-Board Schematic - CT-25G5B/UB
CHIP TRANSISTOR
LEAD DESIGNATION
IC001
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
.....4.55
.....2.55
.....0.00
.....3.41
.....5.26
.....2.79
.....2.27
.....GND
.....n.c
.....5.22
.....n.c
.....GND
.....2.63
.....n.c
.....n.c
.....n.c
.....n.c
.....0.60
.....n.c
.....n.c
.....n.c
.....5.26
.....0.00
.....n.c
.....1.29
.....1.80
.....GND
.....n.c
.....n.c
.....0.00
.....5.21
.....0.00
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
......0.00
......5.13
......5.26
......0.00
......n.c
......GND
......0.15
......4.42
......0.00
......0.00
......0.00
......0.00
......0.22
......0.00
......n.c
......0.48
......0.00
......n.c
......0.00
......n.c
......0.00
..... **
......4.14
......n.c
......0.00
......0.00
......4.25
......4.26
......5.26
..... **
......2.24
......GND
IC002
1
2
3
4
5
6
7
8
..... GND
..... GND
..... GND
..... GND
......4.25
......4.28
..... GND
......5.27
Q002
5.94
10.92
5.29
Q2309
6.87
GND
0.77
Q304
3.12
9.05
2.49
Q003
5.05
5.89
5.94
Q302
2.80
9.05
2.19
B
C
E
Q001
0.74
0.00
GND
Q004
5.26
GND
5.25
Q451
0.63
0.00
GND
Q804
129.90
0.65
130.30
B
C
E
B
C
E
Q452
0.00
3.66
GND
Q430
0.38
2.69
GND
Q501
0.00
90.10
GND
IC101
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
.....2.81
.....5.67
.....0.00
.....0.00
.....0.00
.....0.00
.....9.05
.....3.56
.....3.44
.....3.43
.....4.23
.....GND
.....3.66
.....4.26
.....4.29
.....0.27
.....3.44
.....4.97
.....2.75
.....2.75
.....GND
.....1.56
.....5.00
.....4.00
.....1.78
.....5.68
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
......n.c
......3.42
......2.82
......2.82
......4.82
......2.16
......3.12
......2.59
......3.45
......3.45
......9.05
......4.01
......4.35
......2.82
......4.39
......4.97
......2.59
......GND
......0.37
......6.08
......4.04
......2.07
......5.31
......0.86
......6.51
......4.13
IC2303
1
2
3
4
5
6
7
8
9
10
..... 6.30
.....GND
..... 6.31
..... 0.00
..... 0.77
..... 8.83
..... 8.90
.....GND
..... 8.98
.... 19.02
IC451
1
2
3
4
5
6
7
8
9
10
11
12
13
......8.26
......4.14
......4.14
......4.18
..... GND
......4.21
......3.96
.....26.79
......2.87
..... n.c
..... GND
.....15.48
.....27.68
IC551
1
2
3
....13.66
.....GND
.....9.05
IC552
1
2
3
....13.66
.....GND
.....4.99
Q551
0.00
-31.00
GND
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 ONLY 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
 H.
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 route of B+ supply.
7. The schematic diagrams are
currentatthetimeofprintingand
are subject to change without
notice.
8. Ground symbol indicates HOT
GROUND CONNECTION;
indicates COLD GROUND.
NOTE: All other component symbols
are used for engineering
design purposes.
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
100IREwhiteand7.5IREblack.)
- 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
AudioMode-Stereo
- Voltage readings are nominal
and may vary ±10% on active
devices. Some voltage
reading will vary with signal
strength 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.
Waveform Measurements
1. indicates waveform measurement.
(Measurement can be taken at the
best accessible location in common
to the indicated point.)
2. TakenwithanNTSCsignal
generator connected to the antenna
terminal. (NTSC color bar pattern of
8 bars of EIA colors, 100 IRE white
and 7.5 IRE black.)
3. Customer Controls (Picture/Audio
Menu) are set to Normalize. Volume
is set to “MIN”.
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 shown on
waveform number indicates (Hot)
ground lead connection of the
Oscilloscope.
CAUTION: Incorrect ground
connection of the test equipment will
result in erroneous readings.
3
Boards Designation
• A-Board - Main Board
• C-Board - CRT Board
Note:
Obtained voltages with a digital
multimeter.
IC803
1
2
3
4
5
....87.80
...129.80
...257.90
...130.10
...130.00
Q801
129.00
130.20
129.60
A-Board Voltage Measurements (ICs and Transistors)
** Probing pin may cause television shut
down or blanking the CRT.
IC2304
1
2
3
4
5
6
7
8
9
10
......6.30
.....GND
......6.30
......0.00
......0.77
......8.82
......8.88
.....GND
......8.95
.....19.06
IC2201
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
......1.26
..... n.c
..... n.c
......2.28
......2.18
......0.25
......4.99
......2.31
......2.45
......0.40
......2.24
......3.28
......3.43
......2.18
......3.45
......3.51
..... GND
......4.28
......4.26
..... n.c
......2.26
......2.21
..... n.c
..... n.c
Q3001
0.00
9.01
GND
B
C
E
Q802
129.80
129.90
129.90

HGFEDCBA
1
2
3
4
5
CT-25G5B, CT-25G5UB
MTNC000664A1
Side B
C-Board Schematic
CT-25G5B/UB
C-Board Voltage Measurements (Transistors)
Q351
3.53
148.07
3.28
Q352
3.42
152.40
3.15
Q353
3.41
152.40
3.15
B
C
E
C Board, Waveforms,
C-Board Schematic &
Voltages
Sheet 1 of 1
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 ONLY MANUFACTURERS SPECIFIED PARTS BE
USED FOR THE CRITICAL COMPONENTS DESIGNATED WITH A IN
THE SCHEMATIC.
CHIP TRANSISTOR
LEAD DESIGNATION
Waveform Measurements
1. indicates waveform measurement.
(Measurement can be taken at the
best accessible location in common
to the indicated point.)
2. TakenwithanNTSCsignal
generator connected to the antenna
terminal. (NTSC color bar pattern of
8 bars of EIA colors, 100 IRE white
and 7.5 IRE black.)
3. Customer Controls (Picture/Audio
Menu) are set to Normalize. Volume
is set to “MIN”.
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 shown on
waveform number indicates (Hot)
ground lead connection of the
Oscilloscope.
CAUTION: Incorrect ground
connection of the test equipment will
result in erroneous readings.
3
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
 H.
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 route 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 CONNECTION;
indicates COLD GROUND.
NOTE: All other component symbols
are used for engineering
design purposes.
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
100IREwhiteand7.5IREblack.)
- 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
AudioMode-Stereo
- Voltage readings are nominal
and may vary ±10% on active
devices. Some voltage
reading will vary with signal
strength 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.
Notes:
Obtained voltages using a digital
multimeter.
The board layout has been modified
to enhance and display traces
otherwise hidden by a mask.
Boards Designation
• A-Board - Main Board
• C-Board - CRT Board
Waveforms - A-Board
2.1V p-p [20  s]
IC101 PIN 33 (DET OUT)
1IC101 PIN 1
3.58VCO
OSC Waveform
3.58MHz X’tal
51.9V p-p [20
 s]
IC101 PIN 41 (SYNC)
924.4-29.8V p-p [5ms]
IC451 PIN 13
13 7.4V p-p [20
 s]
IC101 PIN 16 (H SYNC)
17 260-270V p-p [5
 s]
IC803 PIN 2
21
1.0V p-p [20  s]
TP12
23.8-4.8V p-p [20
 s]
A11PIN1(R)
TP47R
64.2V p-p [5ms]
IC101 PIN 52 (VERT OUT)
10 0.1V p-p [20
 s]
IC101PIN47(HAFC)
14 146.3-172.8V p-p [20
 s]
Q501 collector (H DRIVE)
18 260-270V p-p [5
 s]
Collector of Q802
22
2.0V p-p [20  s]
IC101 PIN 39 (Y IN)
33.4-4.0V p-p [20
 s]
A11PIN2(G)
TP47G
71.7V p-p [5ms]
IC451 PIN 7 (DRIVE)
11 IC101 PIN 48
HOSC
OSC Waveform
503KHz X’tal
15 208.7-252.5V p-p [20
 s]
T551 PIN 1
19 2.0V p-p [20
 s]
IC101 PIN 30
COMP SW OUT
23
1.2-1.3V p-p [20  s]
IC101 PIN 43 (C IN)
43.7-4.1V p-p [20
 s]
A11PIN3(B)
TP47B
846.7’55.1V p-p [5ms]
IC451 PIN 12 (VERT OUT)
12 3.3V p-p [20
 s]
IC101 PIN 50 (H OUT)
16 24.4V p-p [20
 s]
T551 PIN 6
20