Philips Consumer Electronics |
Manual 5871 |
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Technical Service Data |
Model no.: CCB130AT01 |
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First Publish: 4-25-2000 |
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Service and Quality |
Rev. Date: 9-27-2000 |
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Print Date: 3/16/05 |
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Service Publications Dept. |
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One Philips Drive |
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P.O. Box 14810 |
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Knoxville, TN 37914 |
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Pg. SCHEMATIC DIAGRAMS AND PC BOARDS |
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1. WIRING DIAGRAM |
8. MAIN CBA BOTTOM VIEW |
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9. HV CBA TOP VIEW |
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2. MAIN 1/4 SCHEMATIC |
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10. HV CBA BOTTOM VIEW |
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3. MAIN 2/4 SCHEMATIC |
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11. CRT CBA TOP & BOTTOM VIEW |
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4. MAIN 3/4 SCHEMATIC |
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12. JUNCTION CBA TOP & BOTTOM VIEW |
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5. MAIN 4/4 SCHEMATIC |
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6. HV/CRT SCHEMATIC |
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7. MAIN CBA TOP VIEW |
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REFER TO SAFETY GUIDELINES
SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation |
Visit our World Wide Web Site at http://www.forceonline.com |
Philips Consumer Electronics |
Manual 5871 |
Technical Service Data |
Model no.: CCB130AT01 |
First Publish: 4-25-2000 |
|
Service and Quality |
Rev. Date: 9-27-2000 |
Print Date: 3/16/05 |
|
Service Publications Dept. |
|
One Philips Drive |
|
P.O. Box 14810 |
|
Knoxville, TN 37914 |
|
Safety Notes
REFER TO SAFETY GUIDELINES
SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation |
Visit our World Wide Web Site at http://www.forceonline.com |
GENER AL SAFET Y NOT ES
I MPOR T ANT SAFET Y NOT I CE
Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics Company** equipment. T he 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. T he special tools should be used when and as recommended.
I t is important to note that this manual contains various CAUT I ONS and NOT I CES which should be carefully read in order to minimize the risk of personal injury to service personnel. T he possibility exists that improper service methods may damage the equipment. I t also is important to understand that these CAUT I ONS and NOT I CES AR E NOT EXHAUST I VE. 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 ____ _ ____ _ ____ _ ____
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
FI R E AND SHOCK HAZAR D
1.Be sure all components are positioned in such a way as to avoid the possibility of adjacent component shorts. T his 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 ____ _ ____ _ ____ _ ____
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 T V receivers are the picture tube and the high voltage circuits. T he 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. T he 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. I t is important to use an accurate and reliable HV meter. I t 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.
6.New picture tubes are specifically designed to withstand higher operating voltages without creating undesirable X-radiation. I t 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. T he CRT types used in these new sets should never be replaced with any other types, as this may result in excessive X-radiation.
7.I t is essential to use the specified picture tube to avoid a possible X-radiation problem.
8.Most T V receivers contain some type of emergency "Hold Down" circuit to prevent HV from rising to excessive levels in the presence of a failure mode. T hese 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.
LEAKAGE CUR R ENT COLD CHECK
1.Unplug the ac line cord and connect a jumper between the two prongs of the plug.
2.T urn 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 CUR R ENT 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, 1OW 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.T he 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 0.5milliamp. I f a measurement is outside of the specified limits, there is a possibility of shock hazard. T he 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 120V AC 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 I nstitute (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 0.5 milliamp. R everse the instrument power cord plug in the outlet and repeat the test. See graphic below.
PICTURE TUBE REPLACEMENT
T he primary source of X-radiation in this television receiver is the picture tube. T he picture tube utilized in this chassis is specially constructed to limit X-radiation emissions. For continued X-radiation 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. T hese 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. T he 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
TV SAFETY NOTES
SAFETY CHECKS
IMPLOSION
X-RADIATION
PICTURE TUBE REPLACEMENT
PARTS REPLACEMENT
WAR NI NG
Before removing the CRT anode cap, turn the unit OFF and short the HI GH VOLT AGE to the CR T DAG ground.
SER VI CE NOT E: T he CR T DAG is not at chassis ground.
TV-VCR COMBI SAFETY NOTES
I MPOR T ANT SAFET Y PR ECAUT I ONS
Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
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. (1) 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. (2) 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 MEASUREMENT S NOT WI T HIN T HE LI MI TS SPECI FIED HEREI N I NDICAT E A POT ENT I AL SHOCK HAZARD T HAT MUST BE ELI MI NAT ED BEFORE RET URNI NG T HE I NST RUMENT T O T HE CUST OMER OR BEFORE CONNECT ING T HE ANT ENNA OR ACCESSORI ES.
d. X-R adiation and High Voltage Limits - Because the picture tube is the primary potential source of X-radiation in solid-state T V 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 & X-R adiation 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. I f 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 T V 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.
4. Picture T ube I mplosion 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 T V 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. T o confirm that the ac power plug is inserted correctly, with an ac voltmeter, measure between the chassis and a known earth ground. I f 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 T V receiver chassis normally have 85Vac (RMS) between chassis and earth ground regardless of the ac plug polarity. T his 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 T V receiver chassis have a secondary ground system in addition to the main chassis ground. T his secondary ground system is not isolated from the ac power line. T he two ground systems are electrically separated by insulation material that must not be defeated or altered.
6.Observe original lead dress. T ake 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.
PRECAUTIONS DURING SERVICE
A.Parts identified by the 
symbol are critical for safety. Replace only with part number specified.
B.I n addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. T hese 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)I nsulation T ape
2)PVC tubing
3)Spacers
4)I nsulators 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 (heatsinks, 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.
R eplacement procedure
1) Remove the old connector by cutting the wires at a point close to the connector. I mportant: Do not re-use a connector (discard it).
2)Strip about 15 mm of the insulation from the ends of the wires. I f the wires are stranded, twist the strands to avoid frayed conductors.
3)Align the lengths of the wires to be connected. I nsert 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.
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 tests and confirm the specified values in order to verify compliance with safety standards.
1. 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 graphic bllow)
T able 1 : R atings for selected area
AC Line Voltage |
R egion |
Clearance Distance |
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(d) (d') |
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USA or |
> 3.2 mm |
110 to 130 V |
CANADA |
(0.126 inches) |
Note: T his table is unofficial and for reference only. Be sure to confirm the precise values.
2.LEAKAGE CURRENT CHECKS
VCR SAFETY NOTES
FIRE & SHOCK HAZARD (VCR)
1.Be sure that all components are positioned in such a way to avoid possibility of shorts to adjacent components. T his is especially important on those chassis which are transported to and from the repair shop.
2.Always replace all protective devices such as insulators and barriers after working on a set.
3.Check for damaged insulation on wires including the ac cord.
4.Check across-the-line components for damage and replace if necessary.
5.After re-assembly of the unit, always perform an ac leakage test on the exposed metallic parts of the cabinet such as the knobs, antenna terminals, etc. to be sure the set is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this test. Use an ac voltmeter
having 5000 ohms per volt or more sensitivity in the following manner: Connect a 1500 ohm 10 wan resistor, paralleled by 0.15 MFD ac type capacitor, between a known good earth ground (water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the ac voltage across the combination 1500 ohm resistor and 0.15 MFD capacitor. Reverse the ac plug on the set and repeat ac voltage measurements again for each exposed metallic part. Voltage measured must not exceed O.6 volts R.M.S. T his corresponds to 0.4 milliamp ac. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.
GENER AL
Power Supply-T his receiver is designed for operation on 120 Volts, 6OHz alternating current (ac) only. Never connect to a supply having a different frequency or voltage.
IMPORTANT NOTICE
T his device employs many circuits, components, and mechanical parts designed for protection against fire, shock and RF interference. For continued safety any servicing should be performed by qualified personnel and exact replacement parts should be used. Under no circumstances should the original design be altered.
PRODUCT SAFETY GUIDELINES FOR ALL PRODUCTS
CAUT I ON: 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 SEPAR AT E I SOLAT I ON T R ANSFOR MER FOR T HI S UNI T WHEN SER VI CI NG.
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. T he following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).
1.I mmediately 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. T hese 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.I mmediately 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.
CAUT I ON : 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.)
NOT E to CAT V system I nstaller:
T his reminder is provided to call the CAT V 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.
Philips Consumer Electronics |
Manual 5871 |
Technical Service Data |
Model no.: CCB130AT01 |
First Publish: 4-25-2000 |
|
Service and Quality |
Rev. Date: 9-27-2000 |
Print Date: 3/16/05 |
|
Service Publications Dept. |
|
One Philips Drive |
|
P.O. Box 14810 |
|
Knoxville, TN 37914 |
|
Mechanical Adjustments
REFER TO SAFETY GUIDELINES
SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation |
Visit our World Wide Web Site at http://www.forceonline.com |
DISASSEMBLY INSTRUCTIONS
Cabinet and Main Assemblies
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.
Click here for Disassembly Flowchart
Caution !
When removing the CRT, be sure to discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap.
Disassembly Method (CCB132)
STEP/ |
PART |
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REMOVAL |
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LOC. NO. |
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FIG. NO. |
REMOVE/ |
NOTE |
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UNLOCK/RELEASE/ |
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UNPLUG/ |
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UNCLAMP/DESOLDER |
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[1] |
Rear Cabinet |
1, 2, 3, 4 |
4(S-1), (S-2) |
1 |
[2] |
H/V CBA(With |
5, 7 |
Anode Cap, CRT CBA, |
2 |
|
Holder) |
|
CL501A, CN503, CN571, |
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|
|
|
CN575, CN602 2(S-3), |
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|
|
|
2(L-1) |
|
[3] |
TrayChassis |
5 |
CN601, CN801 |
3 |
[4] |
Deck Unit |
5 |
7( S-4), 1( S-5) |
4 |
[5] |
Main CBA |
5, 7 |
6(S-6) |
5 |
[6] |
CRT |
6 |
4(S-7) |
6 |
[1] |
[2] |
[3] |
[4] |
[5] |
[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.
S=Screw, P=Spring, L=Locking Tab, CN=Connector, *=Unhook, Unlock, Release, Unplug, or Desloder
2(S-2) = two Screws (S-2)
[5]Refer to the following ”Reference Notes in the Table“
Reference Notes in the Table
1.Removal of the Rear Cabinet. Remove Screws 4(S-1) and 1(S-2)
Caution!
Discharge the Anode Lead of the CRT with the CRT Ground
Wire before removing the Anode Cap.
2.Removal of the H/V CBA with Holder. Discharge the Anode lead of the CRT with
the CRT Ground Wire before removing the Anode Cap.
Disconnect the following: Anode Cap, CRT CBA, CL501A, CN503, CN571, CN575, and CN602.
Remove 2(S-3). Unlock 2(L-1). Pull the H/V CBA backward.
3.Removal of the Tray Chassis. Disconnect CN601 and CN801. Pull the Tray Chassis backward.
4.Removal of the Deck Unit. Remove 7(S-4) and 1(S-5). Lift up the Deck Unit.
5.Removal of the Main CBA. Remove 6(S-6). Lift up the Main CBA.
6.Removal of the CRT. Remove 4(S-7) and pull the CRT backward.
Disassembly Method (CCB255)
STEP/ |
PART |
|
|
REMOVAL |
|
|
|
LOC. |
|
|
|
|
|
|
|
NO. |
|
|
|
|
|
|
|
|
|
|
FIG. |
REMOVE/*UNLOCK/ |
|
|
NOTE |
|
|
|
NO. |
RELEASE/UNPLUG/ |
|
|
|
|
|
|
|
UNCLAMP/DESOLDER |
|
|
|
[1] |
Rear Cabinet |
1, 2 |
6(S-1), 1(S-2) |
|
|
1 |
|
[2] |
Power Supply |
3, 5 |
1(S-3) Anode Cap, CRT CBA, CN301, |
|
2 |
||
|
CBA |
|
|
CN302, CN571, CN603 |
|
|
|
[3] |
Tray Chassis |
3 |
CN801 |
|
|
3 |
|
[4] |
Deck Unit |
|
3 |
7(S-4) |
|
|
4 |
[5] |
Main CBA |
|
3, 5 |
3(S-5), 1(S-6) |
|
|
5 |
[6] |
CRT |
|
4 |
4(S-7) |
|
|
6 |
[1] |
[2] |
[3] |
[4] |
[5] |
|
||
[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.
S=Screw, P=Spring, L=Locking Tab, CN=Connector, *=Unhook, Unlock, Release, Unplug, or Desloder
e.g., 2(S-2) = two Screws (S-2)
[5]Refer to the following ”Reference Notes in the Table“
Reference Notes in the Table
1. Removal of the Rear Cabinet. Remove screws 6(S-1) and 1(S-2).
Caution!
Discharge the Anode Lead of the CRT with the cRT Ground Wire before removing the Anode Cap.
2.Removal of the Power Supply CBA. Discharge the Anode Lead of the CRT with the CRT ground wire before removing the Anode Cap.
Disconnect the following: Anode Cap, CRT CBA, CN301, CN302, CN571, CN603.
Remove 1(S-3).
4.Removal of the Tray chassis. Disconnect CN801, then slide Tray chassis backward.
5.Removal of the Deck Unit. Remove 7(S-4). Lift up the Deck Unit.
6.Removal of the Main CBA. Remove 3(S-5) and 1(S-6). Pull the Main CBA.
7.Removal of the CRT. Remove 4(S-7) and pull the CRT backward.
Disassembly Method (VRB130, 190)
STEP/ |
PART |
|
REMOVAL |
|
LOC. NO. |
|
|
|
|
|
|
FIG. NO. |
REMOVE/ |
NOTE |
|
|
|
UNLOCK/RELEASE/ |
|
|
|
|
UNPLUG/ |
|
|
|
|
UNCLAMP/DESOLDER |
|
[1] |
Rear Cabinet |
1, 2, 3, 4 |
4(S-1), (S-2) |
1 |
[2] |
H/V CBA(With |
5, 7 |
Anode Cap, CRT CBA, |
2 |
|
Holder) |
|
CL501A, CN503, CN571, |
|
|
|
|
CN575, CN602 2(S-3), |
|
|
|
|
2(L-1) |
|
[3] |
TrayChassis |
3, 5 |
CN601, CN801 |
3 |
[4] |
Deck Unit |
3 |
7( S-4), 1( S-5) |
4 |
[5] |
Main CBA |
3 |
6(S-6) |
5 |
[6] |
CRT |
4 |
4(S-7) |
6 |
[1] |
[2] |
[3] |
[4] |
[5] |
[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.
S=Screw, P=Spring, L=Locking Tab, CN=Connector, *=Unhook, Unlock, Release, Unplug, or Desloder
2(S-2) = two Screws (S-2)
[5]Refer to the following ”Reference Notes in the Table“
Reference Notes in the Table
1.Removal of the Rear Cabinet. Remove Screws 4(S-1) and 1(S-2)
Caution!
Discharge the Anode Lead of the CRT with the CRT Ground
Wire before removing the Anode Cap.
2.Removal of the H/V CBA with Holder. Discharge the Anode lead of the CRT with
the CRT Ground Wire before removing the Anode Cap.
Disconnect the following: Anode Cap, CRT CBA, CL501A, CN503, CN571, CN575, and CN602.
Remove 2(S-3). Unlock 2(L-1). Pull the H/V CBA backward.
3.Removal of the Tray Chassis. Disconnect CN601 and CN801. Pull the Tray Chassis backward.
4.Removal of the Deck Unit. Remove 7(S-4) and 1(S-5). Lift up the Deck Unit.
5.Removal of the Main CBA. Remove 6(S-6). Lift up the Main CBA.
6.Removal of the CRT. Remove 4(S-7) and pull the CRT backward.
Disassembly Method (VRB092)
STEP/ |
PART |
|
REMOVAL |
|
|
LOC. |
|
|
|
|
|
NO. |
|
|
|
|
|
|
|
FIG. |
REMOVE/*UNLOCK/ |
|
NOTE |
|
|
NO. |
RELEASE/UNPLUG/ |
|
|
|
|
|
UNCLAMP/DESOLDER |
|
|
[1] |
Rear Cabinet |
1, 2 |
4(S-1), 1(S-2), 2(S-3), (S-4) |
|
1 |
[2] |
H/V CBA |
3, 5 |
Anode Cap, CRT CBA, CL501A, |
|
2 |
|
|
|
CN503,CN571,CN575,CN602, |
|
|
|
|
|
Unclamp H/V CBA |
|
|
[3] |
Power Supply |
3, 5 |
CN1601,CN603,3(S-6),2(L-1), 4(S-7) |
|
3 |
|
CBA |
|
|
|
|
[4] |
Tray Chassis |
3, 5 |
CN802 |
|
54 |
[5] |
Deck Unit |
3, 5 |
6(S-8) |
|
5 |
[6] |
Main CBA |
3, 5 |
4(S-9) |
|
6 |
[7] |
CRT |
4 |
4(S-10) |
|
7 |
[1] |
[2] |
[3] |
[4] |
[5] |
|
[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.
S=Screw, P=Spring, L=Locking Tab, CN=Connector, *=Unhook, Unlock, Release, Unplug, or Desloder
2(S-2) = two Screws (S-2)
[5]Refer to the following ”Reference Notes in the Table“
Reference Notes in the Table
1.Removal of the Rear Cabinet. Remove screws 4(S-1), 1(S-2) and 2(S-3) and 2(S-4).
2.Removal of the H/V CBA. Discharge the Anode Lead of the CRT with the CRT ground wire before removing the Anode Cap.
Disconnect the following: Anode Cap, CRT CBA, CL501A,
CN503, CN571, CN575, CN602 and unclamp the H/V CBA.
3.Removal of the Power Supply CBA. Disconnect CN1601 and CN603. Slide Power Supply CBA holder backward. Remove screws 2(S-6). Slide the Power Supply CBA Holder backward. Remove screws 4(S-7) and release 2(L-1). Pull the Power Supply CBA backward.
4.Removal of the Tray chassis. Disconnect CN802, then slide Tray chassis backward.
5.Removal of the Deck Unit. Remove screws 7(S-8). Lift up the Deck Unit.
6.Removal of the Main CBA. Remove screws 4(S-9).
7.Removal of the CRT. Remove screws 4(S10) and pull the CRT backward.
Front Loading Assembly
Before following the procedures described below, be sure to remove Front Loading Assembly from the main mechanism of the deck assembly. (See Fig DM3.) When reassembling, start with the unit in Cassette-in mode and follow the steps in reverse order.
STEP |
START- |
PART |
|
|
REMOVAL |
INSTALLATION |
|
/LOC. |
ING |
|
|
|
|
|
|
No. |
No. |
|
|
|
|
|
|
|
|
|
|
Fig. No. |
|
REMOVE/*UNHOOK/ |
ADJUSTMENT |
|
|
|
|
|
|
UNLOCK/RELEASE/ |
CONDITION |
|
|
|
|
|
|
UNPLUG/DESOLDER |
|
|
|
|
|
|
|
|
|
[1] |
[1] |
Guide Holder |
T |
DM17 |
|
2(S-1) |
|
[2] |
[1] |
Slider Gear |
L,R |
DM16, DM17 |
|
*4(L-2) |
Eject Position |
*[3] |
[2] |
Slider Shaft |
T |
DM16, DM17 |
|
|
Eject Position |
[4] |
[4] |
Cassette Plate |
T |
DM17 |
|
2(S-2) |
|
[5] |
[4] |
Slider L |
T |
DM17 |
|
|
|
[6] |
[4] |
Slider R |
T |
DM17 |
|
(S-3) |
|
[7] |
[6] |
Door Opener A |
|
DM17 |
|
|
|
[8] |
[8] |
Lock Lever |
|
DM17 |
|
(S-4), *(P-1) |
|
[9] |
[3] |
Cassette Guide R |
|
DM17 |
|
|
|
[10] |
[3] |
Cassette Guide L |
R |
DM17 |
|
|
|
[11] |
[11] |
Joint Holder A |
L |
DM17 |
|
(S-5), *(P-2) |
|
[12] |
[11] |
Cassette Drive Sub |
R |
DM17, DM18 |
|
|
Eject Position |
|
|
Gear |
|
|
|
|
|
[13] |
[11] |
Cassette Drive |
R |
DM17, DM18 |
|
|
Eject Position |
|
|
|
|
|
|
|
|
[13] |
[11] |
Cassette Drive |
|
R |
|
DM17, DM18 |
|
Eject Position |
|
|
|
Gear |
|
|
|
|
|
|
|
[14] |
[13] |
Cassette Drive |
|
R |
|
DM17 |
|
Cassette Drive Spring |
Eject Position |
|
|
Lever |
|
|
|
|
|
|
|
[15] |
[14] |
Front Door Opener |
|
|
|
DM17, DM18 |
|
|
|
¯ |
¯ |
¯ |
¯ |
|
¯ |
|
¯ |
¯ |
|
(1) |
(2) |
(3) |
|
|
(4) |
(5) |
(6) |
(7) |
|
(1)Follow steps in sequence. When reassembling, follow the steps in reverse order. These numbers are also used as Identification (location) No. of parts in the figures.
(2)Indicates the part to start disassembling with in order to disassemble the part in column (1).
(3)Name of the part
(4)Location of the part: T=Top B=Bottom R=Right L=Left
(5)Figure Number
(6)Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered.P=Spring, W=Washer, C=Cut Washer, S=Screw, *=Unhook, Unlock, Release, Unplug, or Desolder e.g., 2(L-2) = two Locking Tabs (L-2).
(7)Adjustment Information for Installation(+): Refer to Deck Exploded Views for lubrication.
*[3]: They are divided into two steps because, before reassembling Slider Shaft, one Slider Gear must be preinstalled at either end of Slider Shaft.
ALIGNMENT PROCEDURES OF MECHANISM
The following procedures describe how to align the individual gears and levers that make up the tape loading/unloading mechanism. Since information about the state of the mechanism is provided to the System Control Circuit only through the Mode Switch, it is essential that the correct relationship between individual gears and levers be maintained.
All alignments are to be performed with the mechanism in Eject mode, in the sequence given. Each procedure assumes that all previous procedures have been completed.
IMPORTANT:
If any one of these alignments is not performed properly, even if off by only one tooth, the unit will unload or stop and it may result in damage to the mechanical or electrical parts.
Alignment points in Eject Position
Alignment 1
Loading Arm, S and T Assembly
1.Install Loading Arm S and T Assembly so that their triangle marks point to each other as shown in Fig. AL2.
Alignment 2
Mode Gear
1.Keeping the two triangles pointing at each other, install the Loading Arm T Assembly so that the last tooth of the gear meets the most inside teeth of the Loading Lever Assembly. See Fig. AL2.
Tape Guide Arm Assembly
1.Measurement of the screw must be as specified in Fig. AL3.
Alignment 3
Cassette Drive Gear, Cassette Drive Sub Gear
Install the Cassette Drive Gear and Cassette Drive Sub Gear so that their triangle marks point to each other as shown in Fig. AL4.
Alignment 4
Cam Gear (A), Cassette Drive Sub Gear
Install the Front Loading Assembly so that the triangle mark of Cassette Drive Sub Gear is aligned with the indent of the Cam Gear (A) as shown in Fig. AL4.
MECHANICAL ALIGNMENT PROCEDURES
Explanation of alignment for the tape to correctly run starts on the next page. Refer to the information below on this page if a tape gets stuck, for example, in the mechanism due to some electrical trouble of the unit.
Service Information
A.Method for Manual Tape Loading/Unloading
To load a cassette tape manually:
1.Disconnect the AC plug.
2.Remove the Rear Cabinet (Refer to CABINET DISASSEMBLY INSTRUCTIONS).
3.Insert a cassette tape. Though the tape will not be automatically loaded, make sure that the cassette tape is all the way in at the inlet of the Cassette Holder. To confirm this, lightly push the cassette tape further in and see if the tape comes back out, by a spring motion, just as much as you have pushed in.
4.Turn the LDG Belt (B) in the appropriate direction shown in Fig. M1 until the First Gear starts turning. Stop turning the LDG Belt (B). Then, turn the First Gear in the appropriate direction continuously. However, movement of the Cam Gear will be very slow. Allow a minute or two to complete this task.
To unload a cassette tape manually:
1.Disconnect the AC plug.
2.Remove the Rear Cabinet. (Refer to CABINET DISASSEMBLY INSTRUCTIONS .)
3.Make sure that the Moving guide assemblies are in the Eject Position. When the Moving guide assemblies are in the Loading Position, go to step 4. When the Moving guide assemblies are in the Eject Position, go to step 6.
4.First, turn the LDG Belt (B) in the appropriate direction shown in Fig. M1 until the First Gear starts turning.
5.Stop turning the LDG Belt (B) immediately after the First Gear starts turning.
6.Turn the First Gear in the appropriate direction until Moving guide assemblies come to the Eject Position. Stop turning when the assemblies begin clicking or can not be moved further. However, the tape will be left wound around the
cylinder.
7.Turn the LDG Belt (B) in the appropriate direction continuously, and the cassette tape will be ejected. As stated, movement of the Cam Gear will be very slow. Allow a minute or two to complete this task.
Method to place the Cassette Holder in the tape-loaded position without a cassette tape
1.Disconnect the AC Plug.
2.Remove the Rear Cabinet. (Refer to CABINET DISASSEMBLY INSTRUCTIONS.)
3.Turn the LDG Belt (B) in the appropriate direction shown in Fig. M1. Release the locking tabs shown in Fig. M1 and continue turning the LDG Belt (B) until the Cassette Holder comes to the tape-loaded position. Allow a minute or two to complete this task.
Tape Interchangeability Alignment
Click here for Flowchart of Alignment for tape traveling
Note:
To do these alignment procedures, make sure that the Tracking Control Circuit is set to the center position every time a tape is loaded or unloaded. (Refer to procedure 1-C, step 2.)
Equipment required:
Dual Trace OscilloscopeVHS Alignment Tape (VFMS0001H6)Guide Roller Adj. ScrewdriverX-Value Adj. Screwdriver
Note:
Before starting this Mechanical Alignment, do all Electrical Adjustment procedures.
Preliminary/Final Checking and Alignment of Tape Path
Purpose:
To make sure that the tape path is well stabilized.
Symptom of Misalignment:
If the tape path is unstable, the tape will be damaged.
Note: Do not use an Alignment Tape for this procedure. If the unit is not correctly aligned, the tape may be damaged.
1.Play back a blank cassette tape and check to see that the tape runs without creasing at Guide Rollers [2] and [3], and at points A and B on the lead surface. (Refer to Fig M3 and M4.)
2.If creasing is apparent, align the height of the guide rollers by turning the top of
Guide Rollers [2] and [3] with a Guide Roller Adj. Screwdriver. (Refer to Fig. M3 and M5.)
Note: Beneath each Guide Roller, there is a small screw. (Refer to Fig. M5.) This screw works to apply adequate torque to the shaft of each Guide Roller so that the Guide Roller turns properly. Even when adjusting the height of the Guide Roller(s), do not touch these two small screws.
3.Check to see that the tape runs without creasing at Take-up Guide Post [4] or without snaking between Guide Roller [3] and AC Head.(Fig. M3 and M5)
4.If creasing or snaking is apparent, adjust the Tilt Adj. Screw of the AC Head. (Fig. M6)
1-B. X Value Alignment
Purpose:
To align the Horizontal Position of the Audio/Control/Erase Head.
Symptom of Misalignment:
If the Horizontal Position of the Audio/Control/Erase Head is not properly aligned, maximum envelope cannot be obtained at the Neutral position of the Tracking Control Circuit.
1.Connect the oscilloscope to J149 [Models CCB130, 190] or TP004 [Model CCB092] (C-PB) and J152 [Models CCB130, 190] or TP008 [Model CCB092] (CTL) on the Main CBA. Use J96 [Models CCB130, 190] or TP005 [Model CCB092] (RF-SW) as a trigger.
2.Play back the Gray Scale of the Alignment Tape (VFMS0001H6) and confirm that the PB FM signal is present.
3.Set the Tracking Control Circuit to the center position by pressing the CH UP button then the PLAY button on the TVCR.
Note: Upon completion of the adjustment of Guide Rollers [2] and [3] (Refer to Fig. M3), check the X Value by pushing the CH UP or DOWN buttons alternately, to check the symmetry of the envelope. Check the number of pushes to ensure center position. The number of pushes UP to achieve 1/2 level of envelope should match the number of pushes DOWN from center. If required, redo the "X Value Alignment.“
4.Use the X-Value Adj. Screwdriver so that the PB FM signal at J149 [Models CCB130, 190] or TP004 [Model CCB092] (C-PB) is maximum. (Fig. M6)
5.Press CH UP button on the TVCR until the CTL waveform has shifted by approx. +2msec. Make sure that the envelope is simply attenuated (shrinks in height) during this process so that you will know the envelope has been at its peak.
6.Press CH DOWN button on the TVCR until the CTL waveform has shifted from its original position (not the position achieved in step 5, but the position of CTL waveform in step 4) by approximately -2msec. Make sure that the envelope is simply attenuated (shrinks in height) once CTL waveform passes its original position and is further brought in the minus direction.
7.Set the Tracking Control Circuit to the center position by pressing the CH UP button and then the PLAY button on the TVCR.
Checking/Adjustment of Envelope Waveform
Purpose:
To achieve a satisfactory picture and precise tracking.
Symptom of Misalignment:
If the envelope output is poor, noise will appear in the picture. The tracking will then lose precision and the playback picture will be distorted by any slight variation of the Tracking Control Circuit.
1. Connect the oscilloscope to J149 [Models CCB130, 190] or TP004 [Model
CCB092] (C-PB) on the Main CBA. Use J96 [Models CCB130, 190] or TP005 [Model CCB092] (RF-SW) as a trigger.
2.Play back the Gray Scale on the Alignment Tape (VFMS0001H6). Set the Tracking Control Circuit to the center position by pressing the CH UP and then the PLAY button on the TVCR. Adjust the height of Guide Rollers [2] and [3] (Fig. M3) watching the oscilloscope display so that the envelope becomes as flat as possible. To do this adjustment, turn the top of the Guide Roller with the Guide Roller Adj. Screwdriver.
3.If the envelope is as shown in Fig. M7, adjust the height of Guide Roller [2] (Refer to Fig. M3) so that the waveform looks like the one shown in Fig. M9.
4.If the envelope is as shown in Fig. M8, adjust the height of Guide Roller [3] (Refer to Fig. M3) so that the waveform looks like the one shown in Fig. M9.
4.When Guide Rollers [2] and [3] (Refer to Fig. M3) are aligned properly, there is no envelope drop either at the beginning or end of track as shown in Fig. M9.
Note: Upon completion of the adjustment of Guide Rollers [2] and [3] (Refer to Fig. M3), check the X Value by pushing the CH UP or DOWN buttons alternately, to check the symmetry of the envelope. Check the number of pushes to ensure center position. The number of pushes UP to achieve 1/2 level of envelope should match the number of pushes DOWN from center. If required, redo the "X Value Alignment.“
Azimuth Alignment of Audio/Control/Erase Head
Purpose:
To correct the Azimuth alignment so that the Audio/Control/Erase Head meets tape tracks properly.
Symptom of Misalignment:
If the position of the Audio/Control/Erase Head is not properly aligned, the Audio S/N Ratio or Frequency Response will be poor.
1.Connect the oscilloscope to the audio output jack on the rear side of the deck.
2.Play back the alignment tape (VFMS0001H6) and confirm that the audio signal output level is 6 kHz.
3.Adjust Azimuth Adj. Screw so that the output level on the AC Voltmeter or the waveform on the oscilloscope is at maximum. (Fig. M6)
Click here for Disassembly Flowchart
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