Proper service and repair is important to the safe, reliable operation of all Philips
Consumer Electronics Company** Equipment. The service procedures recommended by
Philips and described in this service manual are effective methods of performing service
operations. Some of these service operations require the use of tools specially designed
for the purpose. The special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES
which should be carefully read in order to minimize the risk of personal injury to service
personnel. The possibility exists that improper service methods may damage the
equipment. It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Philips could not possibly know, evaluate and advise the
service trade of all conceivable ways in which service might be done, or of the possible
hazardous consequences of each way. Consequently, Philips has not undertaken any such
broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is
not recommended by Philips must first satisfy himself thoroughly that neither his safety
nor the safe operation of the equipment will be jeopardized by the service method
selected.
** Hereafter throughout this manual, Philips Consumer Electronics Company will be
referred to as Philips.
WARNING
Critical components having special safety characteristics are identified with a or
"S" by the Ref. No. in the parts list and enclosed within a broken line* (where
several critical components are grouped in one area) along with the safety symbol
on the schematics or exploded views. Use of substitute replacement parts which
do not have the same specified safety characteristics may create shock, fire, or other
hazards. Under no circumstances should the original design be modified or altered
without written permission from Philips. Philips assumes no liability, express or
implied, arising out of any unauthorized modification of design. Servicer assumes all
liability.
* Broken Line ____ _ ____ _ ____ _ ____
Page 3
FIRE AND SHOCK HAZARD
1. Be sure all components are positioned in such a way as to avoid the possibility of adjacent component
shorts. This is especially important on those chassis which are transported to and from the service shop.
2. Never release a repaired unit unless all protective devices such as insulators, barriers, covers, strain
reliefs, and other hardware have been installed in accordance with the original design.
3. Soldering and wiring must be inspected to locate possible cold solder joints, solder splashes, sharp solder
points, frayed leads, pinched leads, or damaged insulation (including the ac cord). Be certain to remove
loose solder balls and all other loose foreign particles.
4. Check across-the-line components and other components for physical evidence of damage or
deterioration and replace if necessary. Follow original layout, lead length, and dress.
5. No lead or component should touch a receiving tube or a resistor rated at 1 watt or more. Lead tension
around protruding metal surfaces or edges must be avoided.
6. Critical components having special safety characteristics are identified with an 'S' by the Ref. No. in the
parts list and enclosed within a broken line* (where several critical components are grouped in one area)
along with the safety symbol on the schematic diagrams and /or exploded views.
7. When servicing any unit, always use a separate isolation transformer for the chassis. Failure to use a
separate isolation transformer may expose you to possible shock hazard, and may cause damage to
servicing instruments.
8. Many electronic products use a polarized ac line cord (one wide pin on the plug). Defeating this safety
feature may create a potential hazard to the servicer and the user. Extension cords which do not
incorporate the polarizing feature should never be used.
9. After reassembly of the unit, always perform an ac leakage test or resistance test from the line cord to all
exposed metal parts of the cabinet. Also, check all metal control shafts (with knobs removed), antenna
terminals, handles, screws, etc., to be sure the unit may be safely operated without danger of electrical
shock.
* Broken line ____ _ ____ _ ____ _ ____
Page 4
LEAKAGE CURRENT COLD CHECK
1. Unplug the ac line cord and connect a jumper between the two prongs of the plug.
2. Turn on the power switch.
3. Measure the resistance value between the jumpered ac plug and all exposed cabinet parts of the receiver,
such as screw heads, antennas, and control shafts. When the exposed metallic part has a return path to the
chassis, the reading should be between 1 megohm and 5.2 megohms. When the exposed metal does not
have a return path to the chassis, the reading must be infinity. Remove the jumper from the ac line cord.
LEAKAGE CURRENT HOT CHECK
1. Do not use an isolation transformer for this test. Plug the completely reassembled receiver directly into
the ac outlet.
2. Connect a 1.5k, 10W resistor paralleled by a 0.15uF. capacitor between each exposed metallic cabinet
part and a good earth ground such as a water pipe, as shown below.
3. Use an ac voltmeter with at least 5000 ohms/volt sensitivity to measure the potential across the resistor.
4. The potential at any point should not exceed 0.75 volts. A leakage current tester may be used to make
this test; leakage current must not exceed 0.5mA. If a measurement is outside of the specified limits,
there is a possibility of shock hazard. The receiver should be repaired and rechecked before returning it
to the customer.
5. Repeat the above procedure with the ac plug reversed. (Note: An ac adapter is necessary when a
polarized plug is used. Do not defeat the polarizing feature of the plug.)
OR
With the instrument completely reassembled, plug the ac line cord directly into a 120Vac outlet. (Do not
use an isolation transformer during this test.) Use a leakage current tester or a metering system that
complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and
Underwriters Laboratories (UL) 1410, (50.7). With the instrument ac switch first in the on position and
then in the off position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed
metal parts of the instrument (antennas, handle brackets, metal cabinet, screw heads, metallic overlays,
control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis.
Any current measured must not exceed 0.5mA. Reverse the instrument power cord plug in the outlet and
repeat the test. See the graphic below.
Page 5
Page 6
TV-VCR SAFETY NOTES
SAFETY PRECAUTIONS FOR TV CIRCUITS
1. Before returning an instrument to the customer, always make a safety check of the entire instrument,
including, but not limited to, the following items:
a. Be sure that no built-in protective devices are defective or have been defeated during servicing.
Protective shields are provided on this chassis to protect both the technician and the customer.
Correctly replace all missing protective shields, including any removed for servicing convenience.
When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all
protective devices, including but not limited to, nonmetallic control knobs, insulating fishpapers,
adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not operate
this instrument or permit it to be operated without all protective devices correctly installed and
functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any
resulting damage.
b. Be sure that there are no cabinet openings through which an adult or child might be able to insert their
fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1) spacing
between the picture tube and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3)
an improperly fitted and/or incorrectly secured cabinet back cover.
c. Do a leakage current check.
ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A
POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE
INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR
ACCESSORIES.
d. X-Radiation and High Voltage Limits - Because the picture tube is the primary potential source of
X-radiation in solid-state TV receivers, it is specially constructed to prohibit X-radiation emissions.
For continued X-radiation protection, the replacement picture tube must be the same type as the
original. Also, because the picture tube shields and mounting hardware perform an X-radiation
protection function, they must be correctly in place. High voltage must be measured each time
servicing is performed that involves B+, horizontal deflection or high voltage. Correct operation of the
X-radiation protection circuits also must be reconfirmed each time they are serviced. (X-radiation
protection circuits also may be called "horizontal disable" or "hold down.") Read and apply the high
voltage limits and, if the chassis is so equipped, the X-radiation protection circuit specifications given
on instrument labels and in the Product Safety and X-Radiation Warning note on the service data
chassis schematic. High voltage is maintained within specified limits by close tolerance safety-related
components/adjustments in the high-voltage circuit. If high voltage exceeds specified limits, check
each component specified on the chassis schematic and take corrective action.
2. Read and comply with all caution and safety-related notes on or inside the receiver cabinet, on the
receiver chassis, or on the picture tube.
3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this TV
receiver. Design alterations and additions, including, but not limited to circuit modifications and the
addition of items such as auxiliary audio and/or video output connections, might alter the safety
characteristics of this receiver and create a hazard to the user. Any design alterations or additions will
void the manufacturer's warranty and may make you, the servicer, responsible for personal injury or
property damage resulting therefrom.
Page 7
4. Picture Tube Implosion Protection Warning - The picture tube in this receiver employs integral
implosion protection. For continued implosion protection, replace the picture tube only with one of the
same type number. Do not remove, install, or otherwise handle the picture tube in any manner without
first putting on shatterproof goggles equipped with side shields. People not so equipped must be kept
safely away while picture tubes are handled. Keep the picture tube away from your body. Do not handle
the picture tube by its neck. Some "in-line" picture tubes are equipped with a permanently attached
deflection yoke; because of potential hazard, do not try to remove such "permanently attached" yokes
from the picture tube.
5. Hot Chassis Warning
a. Some TV receiver chassis are electrically connected directly to one conductor of the ac power cord and
may be serviced safely without an isolation transformer only if the ac power plug is inserted so that the
chassis is connected to the ground side of the ac power source. To confirm that the ac power plug is
inserted correctly, with an ac voltmeter, measure between the chassis and a known earth ground. If a
voltage reading in excess of 1.OV is obtained, remove and reinsert the ac power plug in the opposite
polarity and again measure the voltage potential between the chassis and a known earth ground.
b. Some TV receiver chassis normally have 85Vac (RMS) between chassis and earth ground regardless of
the ac plug polarity. This chassis can be safety-serviced only with an isolation transformer inserted in
the power line between the receiver and the ac power source, for both personnel and test equipment
protection. Some TV receiver chassis have a secondary ground system in addition to the main chassis
ground. This secondary ground system is not isolated from the ac power line. The two ground systems
are electrically separated by insulation material that must not be defeated or altered.
6. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near
sharp edges, b. near thermally hot parts - be sure that leads and components do not touch thermally hot
parts, c. the ac supply, d. high voltage, and e. antenna wiring. Always inspect in all areas for pinched,
out of place, or frayed wiring. Check ac power cord for damage.
7. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be
replaced with components, parts, or wiring that meet original specifications. Additionally, determine the
cause of overheating and/or damage and, if necessary, take corrective action to remove any potential
safety hazard.
Page 8
PRECAUTIONS DURING SERVICE
A. Parts identified by the symbol are critical for safety. Replace only with part number specified.
B. In addition to safety, other parts and assemblies are specified for conformance with regulations
applying to spurious radiation. These must also be replaced only with specified replacements.
Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc.
C. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
D. Use specified insulating materials for hazardous live parts. Note especially:
1) Insulation Tape
2) PVC tubing
3) Spacers
4) Insulators for transistors
E. When replacing ac primary side components (transformers, power cord, etc.), wrap ends of wires
securely about the terminals before soldering.
F. Observe that the wires do not contact heat producing parts (heat sinks, oxide metal film resistors,
fusible resistors, etc.)
G. Check that replaced wires do not contact sharp edged or pointed parts.
H. When a power cord has been replaced, check that 10-15 kg of force in any direction will not loosen it.
I. Also check areas surrounding repaired locations.
J. Use care that foreign objects (screws, solder droplets, etc.) do not remain inside the set.
K. Crimp type wire connector
When replacing the power transformer in sets where the connections between the power cord and
power transformer primary lead wires are performed using crimp type connectors, in order to prevent
shock hazards, perform carefully and precisely the following steps.
Replacement procedure
1) Remove the old connector by cutting the wires at a point close to the connector. Important: Do not
re-use a connector (discard it).
2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the
strands to avoid frayed conductors.
3) Align the lengths of the wires to be connected. Insert the wires fully into the connector.
4) Use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the
complete closure of the tool.
L. When connecting or disconnecting the VCR connectors, first disconnect the ac plug from the ac supply
socket.
Page 9
SAFETY CHECK AFTER SERVICING
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts
and wires have been returned to original positions. Afterwards, perform the following test and confirm the
specified values in order to verify compliance with safety standards.
Clearance Distance
When replacing primary circuit components, confirm specified clearance distance (d) and (d') between
soldered terminals, and between terminals and surrounding metallic parts. See the graphic below.
Table 1: Ratings for selected area
AC Line Voltage Region Clearance Distance
(d) (d')
USA or > 3.2 mm
110 to 130 V CANADA (0.126 inches)
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
Page 10
SAFETY CHECKS
After the original service problem has been corrected, a complete safety check should be made. Be sure to
check over the entire set, not just the areas where you have worked. Some previous servicer may have left
an unsafe condition, which could be unknowingly passed on to your customer. Be sure to check all of the
following:
Fire and Shock Hazard
Implosion
X-Radiation
Leakage Current Cold Check
Leakage Current Hot Check
Picture Tube Replacement
Parts Replacement
WARNING: Before removing the CRT anode cap, turn the unit OFF and short the HIGH VOLTAGE to
the CRT DAG ground.
SERVICE NOTE: The CRT DAG is not at chassis ground.
IMPLOSION
1. All picture tubes used in current model receivers are equipped with an integral implosion system.
Care should always be used, and safety glasses worn, whenever handling any picture tube. Avoid
scratching or otherwise damaging the picture tube during installation.
2. Use only replacement tubes specified by the manufacturer.
X-RADIATION
1. Be sure procedures and instructions to all your service personnel cover the subject of X-radiation.
Potential sources of X-rays in TV receivers are the picture tube and the high voltage circuits. The
basic precaution which must be exercised is to keep the high voltage at the factory recommended
level.
2. To avoid possible exposure to X-radiation and electrical shock, only the manufacturer's specified
anode connectors must be used.
3. It is essential that the service technician has an accurate HV meter available at all times. The
calibration of this meter should be checked periodically against a reference standard.
4. When the HV circuitry is operating properly there is no possibility of an X-radiation problem. High
voltage should always be kept at the manufacturer's rated value - no higher - for optimum
performance. Every time a color set is serviced, the brightness should be run up and down while
monitoring the HV with a meter to be certain that the HV is regulated correctly and does not exceed
the specified value. We suggest that you and your technicians review test procedures so that HV and
HV regulation are always checked as a standard servicing procedure, and the reason for this prudent
routine is clearly understood by everyone. It is important to use an accurate and reliable HV meter. It
is recommended that the HV reading be recorded on each customer's invoice, which will
demonstrate a proper concern for the customer's safety.
5. When troubleshooting and making test measurements in a receiver with a problem of excessive high
voltage, reduce the line voltage by means of a Variac to bring the HV into acceptable limits while
troubleshooting. Do not operate the chassis longer than necessary to locate the cause of the excessive HV.
Page 11
6. New picture tubes are specifically designed to withstand higher operating voltages without creating
undesirable X-radiation. It is strongly recommended that any shop test fixture which is to be used
with the new higher voltage chassis be equipped with one of the new type tubes designed for this
service. Addition of a permanently connected HV meter to the shop test fixture is advisable. The
CRT types used in these new sets should never be replaced with any other types, as this may result in
excessive X-radiation.
7. It is essential to use the specified picture tube to avoid a possible X-radiation problem.
8. Most TV receivers contain some type of emergency "Hold Down" circuit to prevent HV from rising
to excessive levels in the presence of a failure mode. These various circuits should be understood by
all technicians servicing them, especially since many hold down circuits are inoperative as long as
the receiver performs normally.
PICTURE TUBE REPLACEMENT
The primary source of X-radiation in this television receiver is the picture tube. The picture tube
utilized in this chassis is specially constructed to limit X-radiation emissions. For continued Xradiation protection, the replacement tube must be the same type as the original, including suffix letter,
or a Philips approved type.
PARTS REPLACEMENT
Many electrical and mechanical parts in Philips television sets have special safety related
characteristics. These characteristics are often not evident from visual inspection nor can the protection
afforded by them necessarily be obtained by using replacement components rated for higher voltage,
wattage, etc. The use of a substitute part which does not have the same safety characteristics as the
Philips recommended replacement part shown in this service manual may create shock, fire, or other
hazards.
PRODUCT SAFETY GUIDELINES FOR ALL PRODUCTS
CAUTION: Do not modify any circuit. Service work should be performed only after you are thoroughly
familiar with all of the following safety checks. Risk of potential hazards and injury to the user increases if
safety checks are not adhered to.
USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
Page 12
PREVENTION OF ELECTROSTATIC DISCHARGE (ESD)
Some semiconductor solid state devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive (ES) Devices, Examples of typical ES devices are
integrated circuits and some field-effect transistors and semiconductor "chip" components. The following
techniques should be used to help reduce the incidence of component damage caused by electrostatic
discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain
off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging ESD wrist strap, which should be removed for potential shock
reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive
surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "antistatic
(ESD protected)" can generate an electrical charge sufficient to damage ES devices.
5. Do not use Freon propelled chemicals. These can generate electrical charges sufficient to damage ES
devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are
ready to install it (most replacement ES devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch
the protective material to the chassis or circuit assembly into which the device will be installed.
CAUTION: Be sure no power is applied to the chassis or circuit and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless
motion such as the brushing together of your clothes fabric or the lifting of your feet from a carpeted
floor can generate static electricity (ESD) sufficient to damage an ES device.)
NOTE to CATV system Installer:
This reminder is provided to call the CATV system installer's attention to article 820-22 of the NEC that
provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be
connected to the grounding system of the building, as close to the point of cable entry as practical.
Page 13
PRACTICAL SERVICE PRECAUTIONS
IT MAKES SENSE TO AVOID EXPOSURE TO ELECTRICAL SHOCK. While some sources are
expected to have a possible dangerous impact, others of quite high potential are of limited current and are
sometimes held in less regard.
ALWAYS RESPECT VOLTAGES. While some may not be dangerous in themselves, they can cause
unexpected reactions – reactions that are best avoided. Before reaching into the powered color TV set, it is
best to test the high voltage insulation. It is easy to do, and is just a good service precaution.
BEFORE POWERING UP THE TV WITH THE BACK OFF (or on a test fixture), attach a clip lead to
the CRT DAG ground and to a screwdriver blade that has a well insulated handle. After the TV is powered
on and high voltage has developed, probe the anode lead with the blade, starting at the bottom of the High
Voltage Transformer (flyback – IFT). Move the blade to within two inches of the connector of the CRT. IF THERE IS AN ARC, YOU FOUND IT THE EASY WAY, WITHOUT GETTING A SHOCK! If
there is an arc to the screwdriver blade, replace the High Voltage Transformer or the lead, (if removable)
whichever is causing the problem.
PICTURE TUBE REPLACEMENT PROCEDURE
Note: a. Two (2) people are required to handle this picture tube.
b. Safety Glasses must be worn during this procedure or whenever directly handling a picture tube.
c. Take care in each step not to damage the CRT or the cabinet.
1. Remove the Chassis and the CRT Socket Board Module from the cabinet.
2. A furniture pad or blanket should be positioned on the floor to support only the CRT Face. This pad or
blanket should be high enough to keep the CRT Face approximately 12 to 14 inches off the floor.
3. Using two people, place the cabinet in a front down position with the CRT Face on the pad or blanket.
4. Place padded blocks under each corner of the cabinet to keep it from rocking.
5. Remove the four screws, at the corners of the CRT.
6. With two people lowering the cabinet to the floor, leave the CRT elevated by the pad or blanket.
Note: Take care not to grasp the neck of the CRT during this procedure, as it is extremely fragile.
7. Two (2) people may then lift the CRT from the cabinet.
8. Remove the degaussing coil from the defective CRT and mount on the replacement. Take care to
maintain the exact shape and fit.
To install the new CRT, reverse steps 1 to 7.
Page 14
STANDARD NOTES FOR SERVICING
Circuit Board Indications
1. The output pin of the 3 pin Regulator ICs is indicated as shown:
2. For other ICs, pin 1 and every 5th pin are indicated as shown:
3. The 1st pin of every pin connector is indicated as shown:
Instructions for Connectors
1. When you connect or disconnect FFC cable (connector), be sure to disconnect the AC cord.
2. FFC cable (connector) should be inserted parallel into the connector, not at an angle.
Caution:
Once chip parts (Resistors, Capacitors, Transistors, etc.) are removed, they must not be reused. Always use
a new part.
Page 15
Replacement Procedures for Leadless (Chip)
Components
The following procedures are recommended for the replacement of the leadless components used in
this unit.
1. Preparation for replacement
a. Soldering Iron: Use a pencil-type soldering iron (less than 30 watts).
b. Solder: Eutectic solder (Tin 63%, Lead 37%) is recommended.
c. Soldering time: Do not apply heat for more than 4 seconds.
d. Preheating: Leadless capacitor must be preheated before installation. (130°C~150°C, for about two
minutes.)
Notes:
a. Leadless components must not be reused after removal.
b. Excessive mechanical stress and rubbing for the component electrode must be avoided.
2. Removing the leadless component
Grasp the leadless component body with tweezers and alternately apply heat to both electrodes. When the
solder on both electrodes has melted, remove leadless component with a twisting motion.
Notes:
a. Do not attempt to lift the component off the board until the component is completely disconnected from
the board by the twisting action.
b. Take care not to break the copper foil on the printed board.
3. Installing the leadless component
a. Presolder the contact points of the circuit board.
b. Press the part downward with tweezers and solder both electrodes.
Note:
Do not glue the replacement leadless component to the circuit board.
Page 16
How to Remove / Install Flat Pack IC
Caution:
1. Do not apply the hot air to the chip parts around the Flat Pack-IC for over 6 seconds as damage may
occur to the chip parts. Put Masking Tape around the Flat Pack-IC to protect other parts from damage. (Fig.
S-1-2)
2. The Flat Pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each
pin or solder lands under the IC when removing it.
1. Removal
With Hot - Air Flat-Pack IC Desoldering Machine:
a. Prepare the Hot - Air Flat-Pack IC Desoldering Machine, then apply hot air to Flat-Pack IC (about 5~6
seconds). (Fig. S-1-1)
b. Remove the Flat Pack- IC with tweezers while applying the hot air.
With Soldering Iron:
a. Using desoldering braid, remove the solder from all pins of the Flat Pack - IC. When you use solder flux
which is applied to all pins of the Flat Pack - IC, you can remove it easily. (Fig. S-1-3)
Page 17
b. Lift each lead of the Flat Pack - IC upward one by one, using a sharp pin or wire to which solder will not
adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air Desoldering Machine.
(Fig. S-1-4)
With Iron Wire:
a. Using desoldering braid, remove the solder from all pins of the Flat Pack - IC. When you use solder flux
which is applied to all pins of the Flat Pack - IC, you can remove it easily. (Fig. S-1-3)
b. Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5.
c. Pull up on the wire as the solder melts so as to lift the IC leads from the CBA contact pads, while heating
the pins using a fine tip soldering iron or hot air blower.
Note:
When using a soldering iron, care must be taken to ensure that the Flat Pack - IC is not being held by glue,
or when it is removed from the CBA, it may be damaged if force is used.
Page 18
2. Installation
a. Using desoldering braid, remove the solder from the foil of each pin of the Flat Pack – IC on the CBA, so
you can install a replacement Flat Pack - IC more easily.
b. The ”•“ mark on the Flat Pack - IC indicates pin 1 (See Fig. S-1-7). Make sure this mark matches the 1
on the CBA when positioning for installation. Then pre - solder the four corners of the Flat Pack- IC (See
Fig. S-1-7).
c. Solder all pins of the Flat Pack - IC. Make sure that none of the pins have solder bridges.
Page 19
Instructions for Handling Semiconductors
Electrostatic breakdown of the semiconductors may occur due to a potential difference caused by
electrostatic charge during unpacking or repair work.
Ground for Human Body
Be sure to wear a grounding band (1MW) that is properly grounded to remove any static electricity that
may be charged on the body.
Ground for Work Bench
Be sure to place a conductive sheet or copper plate with proper grounding (1MW) on the workbench or
other surface, where the semiconductors are to be placed. Because the static electricity charge on the
clothing will not escape through the body grounding band, be careful to avoid contacting semiconductors to
clothing.
Page 20
SPECIFICATIONS
< TV Section >
Mode: SP mode unless otherwise specified
Test input terminal:
<Except Tuner> Video input (1Vp-p)
Audio input (-10dB)
<Tuner> Ant. input (80dBmV) Video: 87.5%
Audio: 25kHz dev (1kHz Sin)
<DEFLECTION>
DescriptionConditionUnitNominalLimit
Over Scan—%90—
LinearityHorizontal%—15
Vertical%—10
High Voltage—kV27—
<VIDEO & CHROMA>
DescriptionConditionUnitNominalLimit
MisconvergenceCenterm/m—0.4
Cornerm/m—1.5
Sidem/m—1.4
Tint Control Range—deg30—
Contrast Control
Range
BrightnessAPL 100%ft-L3540
Color Temperature—K9200—
—dB64
<TUNER>
DescriptionConditionUnitNominalLimit
Video S/N—dB4540
Audio S/N (W/LPF)—dB4340
<AUDIO>
All items are measured across 8W resistor at speaker output terminal.
Note: Nominal specifications represent the design specifications. All units should be able to approximate
these. Some will exceed and some may drop slightly below these specifications. Limit specifications
represent the absolute worst condition that still might be considered acceptable. In no case should a unit
fail to meet limit specifications.
(R/P)W1.00.8
200Hz (R/P)
8kHz (R/P)
DB
dB
-2.0
0
-2.0 ± 5.0
0 ± 6.0
Page 21
< DVD SECTION >
DescriptionConditionUnitNominalLimit
Horizotal Resolution(TDV-540 TIT2
CHP16)
VIDEO S/N(TDV-540 TIT2
CHP6)
S/N Chroma AM
S/N Chroma PM
Audio Distortion(PTD1-NOR
NOTES:
All Items are measured without pre-emphasis unless otherwise specified.
Power supply: AC120 V 60 Hz
Load imp.: 100 k ohm
Room ambient: +25 °C
Page 22
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Page 27
CABINET DISASSEMBLY INSTRUCTIONS
Disassembly Flowchart
This flowchart indicates the disassembly steps for the cabinet parts and the CBA in order to gain access to
item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route and dress the cables
as they were.
Page 28
Disassembly Method
STEP/
LOC. NO.
REMOVE/*UNLOCK/
[1] Rear
[2] H.V. CBA
[3] Tray
[4] CRT
[5] Shield Box
[6] Deck
[7] DVD CBA
[8] Filter CBA
[9] Bottom Plate
[10] Main CBA
Note :
1. Order of steps in Procedure. When reassembling, follow the steps in reverse order. These numbers are also
used as the Identification (location) No. of parts in Figures.
2. Parts to be removed or installed.
3. Fig. No. showing Procedure of Part Location
4. Identification of part to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered.
When removing the CRT, be sure to discharge the Anode Lead of the CRT with the CRT Ground Wire before
removing the Anode Cap.
Page 29
Reference Notes in the Table
CAUTION 1: Discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode
Cap.
1. Disconnect the following: Anode Cap., CN501, CRT CBA, CN571, CN1201, CN1202, CN1203 and CN1204
and CN691, and remove four Screws (S-3) to remove the Power Supply CBA.
2. Remove H.V. CBA (with Holder) and Power Supply CBA.
3. Remove two Screws (S-4) and unlock 1(L-1). Pull the H.V. CBA backward.
CAUTION 2: Electrostatic breakdown of the laser diode in the optical system block may occur as a potential
difference caused by electrostatic charge accumulated on cloth, human body etc, during unpacking or repair
work.
To avoid damage of pickup follow next procedures.
1. Slide out the pickup unit as shown.
2. Short the copper pattern (half-moon shape) of FPC cable with solder before removing the FFC cable
(CN001) from it. If you disconnect the FFC cable (CN001), the laser diode of pickup will be destroyed. (Fig.
4)
3. Disconnect Connector (CN120). Remove four Screws (S-8) and lift the DVD CBA.
CAUTION 3: When reassembling, confirm the FFC cable (CN001) is connected completely. Then remove the
solder from copper pattern (half-moon shape) of FPC cable.
Page 30
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Page 33
< TV Section Adjustments >
General Note:
“CBA” is abbreviation for “Circuit Board Assembly.”
Note: Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is
important to perform these adjustments only after all repairs and replacements have been completed. Also, do
not attempt these adjustments unless the proper equipment is available.
Page 34
Test Equipment Required
1. NTSC Pattern Generator (Color Bar W/White Window, Red Color, Dot Pattern, Gray Scale, Monoscope,
Multi-Burst)
2. AC Milli Voltmeter (RMS)
3. DC Voltmeter
4. Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50V/Div,
F-Range: DC~AC-60MHz
5. Frequency Counter
6. Plastic Tip Driver
How to set up the service mode:
To enter the Service mode:
1. Enter the unit into the Standby mode. (Turn the power off.)
2. Press “TV” button on the remote control unit.
3. Press “2.” “7.” “1.” and “MUTE” button in sequence on the remote control unit. The power is turned on with
the F-Mode and the unit enters the Service mode.
To cancel the Service mode:
Using the remote control unit, press “POWER” button. The unit enters the MUTE mode.
Using the front panel, press “POWER” button. The unit turns the power off.
X-Ray Protection Test
X-Ray protection test should be done when replacing any parts of this chassis.
1. Short test points J535 and J536 (on H.V. CBA).
2. Confirm that the main power turns off.
3. If the main power does not turn off, then replace the following parts (D591, Q591, R592, R593, R594 and
IC201).
4. Perform steps 1 to 3 again.
Page 35
DC 114V (+B) Adjustment
Purpose: To obtain correct operation.
Symptom of Misadjustment: The picture is dark and unit does not operate correctly.
Test Point Adjustment Point Mode Input
TP601 (+B)
TP602 (GND)
Disc M. EQ. Spec.
--- DC Voltmeter +114 ± 0.5V DC
Note: TP601(+B), TP602(GND), VR661 --- Power Supply CBA
1. Connect the unit to an isolation transformer.
2. Connect DC Voltmeter to TP601(+B) and TP602(GND).
3. Adjust VR661 so that the voltage of TP601(+B) becomes +114 ± 0.5V DC.
VR661
--- ---
Auto AFT (VCO) Adjustment
Purpose: To operate AFT correctly.
Symptom of Misadjustment: AFT does not work correctly and/or synchronization is faulty.
Test Point Adjustment Point Mode Input
--- --- VIDEO ---
Disc M. EQ. Spec.
--- --- ---
1. Set the unit to the VIDEO mode with no signal input.
2. Enter the Service mode. Then press “3" button on the remote control unit
3. If the screen color changes to “Green” then this adjustment is finished.
4. If the screen color changes to “Red” then this adjustment is failed. Repeat steps 1 and 2 or check connection
and input signal.
Page 36
TV AGC Adjustment
Purpose: Set AGC (Auto Gain Control) Level.
Symptom of Misadjustment: AGC does not synchronize correctly when RF input level is too weak and picture
distortion may occur if it is too strong.
Test Point Adjustment Point Mode Input
TP1012
Disc M. EQ. Spec.
--- Pattern Generator
Notes: TP1012 --- Main CBA
1. Enter the Service mode. Then press number 2 button on the remote control unit.
2. Receive the Color Bar signal for channel 4 (67.25MHz). (RF Input Level: 60dBmV)
3. Press CH. up/down buttons so that the voltage of TP1012 becomes +2.30.3V DC.
(Tuner Type No. B8045AR)
4. Turn the power off and on again.
CH. up/down buttons --- Color Bar
67.25MHz
60dBmV
+2.30.3VDC
DC Voltmeter
H Adjustment
Purpose: To get correct horizontal position and size of screen image.
Symptom of Misadjustment: Horizontal position and size of screen image may not be properly displayed.
Test Point Adjustment Point Mode Input
R583 CH up/down buttons
Disc M. EQ. Spec.
--- Frequency Counter 15.734kHz ± 300Hz
Note: R583 --- Main CBA
1. Connect frequency counter to R583.
2. Operate the unit for at least 20 minutes.
3. Press “2" button on the remote control unit and select H-ADJ Mode. (By pressing ”2" button the display will
change H-ADJ and AGC cyclically).
4. Press CH up/down buttons on the remote control unit so that the display will change “0" to ”7."
5. At this moment, choose display “0" to ”7" when the frequency counter shows
15.734kHz ± 300Hz.
6. Turn the power off and on again.
VIDEO ---
Page 37
C-Trap Adjustment
Purpose: To get minimum leakage of the color signal carrier.
Symptom of Misadjustment: If C-Trap Adjustment is incorrect, stripes will appear on the screen.
Test Point Adjustment Point Mode Input
TP1007 (B-Out)
Disc M. EQ. Spec.
--- Oscilloscope
CH up/down buttons --- Color Bar
Figure 2
Note: TP1007 (B-Out) --- Main CBA
1. Connect oscilloscope to TP1007.
2. Input a color bar signal from RF input. Enter the Service mode.
3. Press “0" button on the remote control unit and select C-TRAP mode.
4. Press CH up/down buttons on the remote control unit so that the carrier leakage B-Out (3.58MHz) value
becomes minimum on the oscilloscope.
5. Turn the power off and on again.
V. Size Adjustment
Purpose: To obtain correct vertical height of screen image.
Symptom of Misadjustment: If V. Size is incorrect, vertical height of image on the screen may not be properly
displayed.
Test Point Adjustment Point Mode Input
--- CH up/down buttons --- Monoscope
Disc M. EQ. Spec.
--- Pattern Generator 90 ± 5%
Note:
1. Enter the Service mode. Press “9" button on the remote control unit and select V-S mode.
(By pressing ”9" button the display will change V-P and V-S cyclically).
2. Input the Monoscope pattern.
3. Press CH up/down buttons on the remote control unit so that the monoscope pattern
is 90 ± 5% of display size and the circle is round.
Page 38
V. Shift Adjustment
Purpose: To obtain correct vertical position of screen image.
Symptom of Misadjustment: If V. shift is incorrect, vertical position of image on the screen may not be
properly displayed.
Test Point Adjustment Point Mode Input
--- CH up/down buttons --- Monoscope
Disc M. EQ. Spec.
--- Pattern Generator 90 ± 5%
Note:
1. Enter the Service mode. Press “9" button on the remote control unit and select V-P mode.
(By pressing ”9" button the display will change V-P and V-S cyclically).
2. Input Monoscope pattern.
3. Press CH up/down buttons on the remote control unit so that the left and right side of the Monoscope pattern
are equal to each other. (90 ± 5%)
H. Shift Adjustment
Purpose: To obtain correct horizontal position and size of screen image.
Symptom of Misadjustment: Horizontal position and size of screen image may not be properly displayed.
Test Point Adjustment Point Mode Input
--- CH up/down buttons --- Monoscope
Disc M. EQ. Spec.
--- Pattern Generator 90 ± 5%
Note:
1. Enter the Service mode. Press “8" button on the remote control unit and select H-P mode.
2. Input Monoscope pattern.
3. Press CH up/down buttons on the remote control unit so that the left and right side of the Monoscope pattern
are equal to each other. (90 ± 5%)
4. Turn the power off and on again.
Page 39
Cut-off Adjustment
Purpose: To adjust the beam current of R, G, B, and screen voltage.
Symptom of Misadjustment: White color may be reddish, greenish or bluish.
Test Point Adjustment Point Mode Input
--- Screen-Control Ext. Black Raster /
White Raster
Disc M. EQ. Spec.
---
Pattern Generator
See Reference Notes below.
Note: Screen Control FBT --- H/V CBA
F.B.T= Flyback Transformer
Use the remote control unit
1. Degauss the CRT and allow CRT to operate for 20 minutes before starting the alignment.
2. Set the screen control to minimum position. Input the black raster signal from RF input.
3. Enter the Service Mode. Dimmed horizontal line appears on the CRT.
4. Press the “VOL up/down” button. (By pressing VOL up/down the display will change CUT OFF/DRIVE, VCO
adjustment, Analog OSD adjustment cyclically).
5. Choose CUT OFF/DRIVE mode then press “1" button. This adjustment mode is
CUT OFF (R).
6. Press the “CH up/down” button until the horizontal line becomes white.
7. Choose CUT OFF/DRIVE mode then press “2" button. This adjustment mode is CUT OFF (G). Press ”CH
up/down “ until the horizontal line becomes white.
8. Choose CUT OFF/DRIVE mode then press “3" button. This adjustment mode is CUT OFF (B). Press ”CH
up/down “ until the horizontal line becomes white.
9. Input the white raster signal from Video In.
10. Choose CUT OFF/DRIVE mode then press “4.” Adjust the RED DRIVE as needed with the CH up/down
buttons.
11. Choose CUT OFF/DRIVE mode then press “5.” Adjust the BLUE DRIVE as needed with the CH up/down
buttons.
12. Turn the power off and on again.
Page 40
Sub-Brightness Adjustment
Purpose: To get proper brightness.
Symptom of Misadjustment: If Sub-Brightness is incorrect, proper brightness cannot be obtained by adjusting
the Brightness Control.
Test Point Adjustment Point Mode Input
--- CH up/down buttons --- SYMPTE
7.5 IRE
Disc M. EQ. Spec.
--- Pattern Generator
See below
Note: SYMPTE Setup level --- 7 IRE
1. Enter the Service Mode. Then input SYMPTE signal from RF input.
2. Press MENU button. (By pressing MENU button the display will change B R T, C N T, T N T, V-T and SHP
cyclically). Select BRT and press CH up/down buttons so that the bar is just visible (see above figure).
3. Turn the power off and on again.
Focus Adjustment
Purpose: Set the optimum Focus.
Symptom of Misadjustment: If Focus Adjustment is incorrect, blurred images are shown on the display.
Test Point Adjustment Point Mode Input
--- Focus Control --- Monoscope
Disc M. EQ. Spec.
--- Pattern Generator See below.
Note: Focus VR (FBT) --- H/V CBA
FBT= Flyback Transformer
1. Operate the unit more than 30 minutes
2. Face the unit to the East and degauss the CRT using a Degaussing Coil.
3. Input the Monoscope pattern.
4. Adjust the Focus Control on the FBT to obtain a clear picture.
Page 41
SIF Adjustment
Purpose: To set the SIF (Sound Intermediate Frequency).
Symptom of Misadjustment: Audio may not sound correctly.
Note: This adjustment is automatically done by the chrominance IC (IC301).
CCS Text Box Location
When replacing the CRT, the CCS Box might not stay in appropriate position. Then, replace micro computer.
This adjustment is automatically done by the microcomputer.
The following 2 adjustments are not normally attempted in the field. They should be done only when replacing
the CRT then adjust as a preparation.
Purity Adjustment
Purpose: To obtain pure color.
Symptom of Misadjustment: If Color Purity Adjustment is incorrect, large areas of color may not be properly
displayed.
Test Point Adjustment Point Mode Input
--- Deflection Yoke
Purity Magnet
Disc M. EQ. Spec.
--- Pattern Generator
--- Red Color
See below.
1. Set the unit facing east.
2. Operate the unit for over 30 minutes before adjusting.
3. Fully degauss the unit using an external degaussing coil.
4. Set the unit to the AUX Mode which is located before CH2 then input a red raster
from video in.
5. Loosen the screw on the Deflection Yoke Clamper and pull the Deflection Yoke
back away from the screen.
6. Loosen the Ring Lock and adjust the Purity Magnets so that a red field is obtained at the center of the
screen. Tighten Ring Lock.
7. Slowly push the Deflection Yoke toward the bell of the CRT and set it where a uniform red field is obtained.
8. Tighten the clamp screw on the Deflection Yoke.
Page 42
Convergence Adjustment
Purpose: To obtain proper convergence of red, green and blue beams.
Symptom of Misadjustment: If Convergence Adjustment is incorrect, the edge of white letters may have color
edges.
Test Point Adjustment Point Mode Input
--- C.P. Magnet (RB),
C.P. Magnet (RB-G),
Deflection Yoke
Disc M. EQ. Spec.
--- Pattern Generator
--- Dot Pattern
or Crosshatch
See below
1. Set the unit to the AUX Mode which is located before CH2 then input a dot or crosshatch pattern.
2. Loosen the Ring Lock and align red with blue dots or crosshatch at the center of the screen by rotating
(RB) C.P. Magnets.
3. Align red / blue with green dots at the center of the screen by rotating (RB-G) C.P. Magnet.
4. Fix the C.P. Magnets by tighteni ng the Ring Lock.
5. Remove the DY Wedges and slightly tilt the Deflection Yoke horizontally and vertically to obtain the best
overall convergence.
6. Fix the Deflection Yoke by carefully inserting the DY Wedges between CRT and Deflection Yoke.
Page 43
< DVD Section Adjustments>
General Note: “CBA” is an abbreviation for “Circuit Board Assembly.”
Note:
Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is
important to do these adjustments only after all repairs and replacements have been completed. Also, do not
attempt these adjustments unless the proper equipment is available.
Test Equipment Required
Oscilloscope: Dual-trace with 10:1 probe, V-Range: 0.01~50V/Div., F-Range: AC~DC-20MHz
1. 5V Adjustment
Purpose: To ensure proper operation.
Symptom of Misadjustment: Not operating or IC defective.
Test Point Adjustment Point Mode Input
J1023 (GND)
J1028 (5V)
Disc Measurement Equipment Spec
--- Oscilloscope 5.1V
VR1001 --- ---
Connections of Measurement Equipment
Reference Notes:
J1023, J1028, VR1001 : SUB CBA
With the DVD player in STOP mode, adjust VR1001 for a reading of 5.1Vdc at pins 3, 4, and 5 of CN1001 (P-
ON 5V terminals).
Page 44
Page 45
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Page 52
(7607)
Page 53
(7607)
Page 54
All Models (7607) - WIRING DIAGRAM (TV SECTION)
Page 55
All Models (7607) - WIRING DIAGRAM (DVD SECTION)
Page 56
All Models (7607) - MAIN 1/2 SCHEMATIC DIAGRAM (TV SECTION)
Page 57
All Models (7607) - MAIN 2/2 SCHEMATIC DIAGRAM (TV SECTION)
Page 58
All Models (7607) - H.V. SCHEMATIC DIAGRAM (TV SECTION)
Page 59
All Models (7607) - POWER SUPPLY SCHEMATIC DIAGRAM (TV SECTION)
Page 60
All Models (7607) - CRT SCHEMATIC DIAGRAM (TV SECTION)
Page 61
All Models (7607) - FILTER SCHEMATIC DIAGRAM (TV SECTION)
Page 62
All Models (7607) - DVD 1/6 SCHEMATIC DIAGRAM (DVD SECTION)
Page 63
All Models (7607) - DVD 2/6 SCHEMATIC DIAGRAM (DVD SECTION)
Page 64
All Models (7607) - DVD 3/6 SCHEMATIC DIAGRAM (DVD SECTION)
Page 65
All Models (7607) - DVD 4/6 SCHEMATIC DIAGRAM (DVD SECTION)
Page 66
All Models (7607) - DVD 5/6 SCHEMATIC DIAGRAM (DVD SECTION)
Page 67
All Models (7607) - DVD 6/6 SCHEMATIC DIAGRAM (DVD SECTION)
Page 68
All Models (7607) - MAIN CBA TOP VIEW (TV SECTION)
Page 69
All Models (7607) - MAIN CBA BOTTOM VIEW (TV SECTION)
Page 70
All Models (7607) - H.V. CBA TOP VIEW (TV SECTION)
Page 71
All Models (7607) - H.V. CBA BOTTOM VIEW (TV SECTION)
Page 72
All Models (7607) - POWER SUPPLY CBA TOP VIEW (TV SECTION)
Page 73
All Models (7607) - POWER SUPPLY CBA BOTTOM VIEW (TV SECTION)
Page 74
All Models (7607) - CRT CBA TOP VIEW (TV SECTION)
Page 75
All Models (7607) - CBT CBA BOTTOM VIEW (TV SECTION)
Page 76
All Models (7607) - FILTER CBA TOP VIEW (TV SECTION)
Page 77
All Models (7607) - FILTER CBA BOTTOM VIEW (TV SECTION)
Page 78
All Models (7607) - DVD CBA TOP VIEW (DVD SECTION)
Page 79
All Models (7607) - DVD CBA BOTTOM VIEW (DVD SECTION)
Page 80
CABINET EXPLODED VIEW
Page 81
DVD MECHANISM EXPLODED VIEW
Page 82
PACKING EXPLODED VIEW
Page 83
CDV19BPH - Manual no. 7607
MECHANICAL
MECHANICAL
1B1 DVD MECHA ASSEMBLY (WITHOUT DVD CBA) . 4835 691 17082