Thomson RP7930A SERVICE MANUAL

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RP7930A MAR/00
Audio/Communication Basic Service Data
Latin America After Sales
Indianapolis IN 46290 U.S.A.
SERVICE DATA INDEX
Alignments ...................................................................................................................... 1-7
Block Diagram ................................................................................................................ 1-23
Exploded View ................................................................................................................ 1-24
IC Lead Identifications ................................................................................................... 1-17
Replacement Parts List ................................................................................................... 1-3
Safety Precautions .......................................................................................................... 1-2
Schematics
CD Mechanism/Display ............................................................................................. 1-26
Main/Tuner/Tape/Power/Servo .................................................................................. 1-25
Specifications .................................................................................................................. 1-5
Troubleshooting Guides ................................................................................................. 1-13
Voltage Charts ................................................................................................................ 1-15
RP7930A
Page
Number
CAUTION: Modification or repair of this unit by unauthorized persons is a direct violation of FCC Rules Part 68.216 and could
result in risk of electric shock. You are urged to contact a qualified factory authorized service facility for repairs.
USE ISOLATION TRANSFORMER WHEN SERVICING
Components having special safety characteristics are identified by a ( ) o n schematics and on the parts list in this Service Data and its bulletins. Before servicing this instrument, it is important that the service technician read and follow the "Safety Precautions" in the Basic Service Data.
First Edition - First Printing Copyright 2000 - Thomson Consumer Electronics, Inc. Printed in U.S.A. - Trademark(s)
®
Registered - Marca(s) Registrada(s)
RP7930A
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SAFETY PRECAUTIONS
1. Before returning the 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 and/
or have been defeated during servicing. (1) Protective shields are provided on this instrument to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reassembling the instrument, 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, and may expose themselves and others to possible injury.
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) excessively wide cabinet ventilation slots, and (2) improperly fitted and/or incorrectly secured cabinet covers.
c. Leakage Cold Check - With the instrument AC plug removed
from any AC source, connect an electrical jumper across the two AC plug prongs. Place the instrument AC switch in the on position. Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter lead in turn to each push button/customer control, exposed metal screws, metallized overlays and to each cable connector. If the measured resistance is less than 1.0 megohm or greater than 5.2 megohm an abnormality exists that must be corrected before the instrument is returned to the customer. Repeat this test with the AC switch in the off position.
d. Leakage Current Hot Check
On completely assembled instrument, 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 Institute (ANSI) C101.1 Leakage Current for
Appliances and Underwriters Laboratories (UL) 1492 (Section
67). Measure for current from a known earth ground (metal
waterpipe, conduit, etc.) to all exposed metal or conductive parts of the instrument (antenna connections, handle bracket, metal cabinet, screwheads, metallic overlays, push-buttons, 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. Reverse the instrument power cord plug in the outlet and repeat the test.
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 TO ANTENNA OR ACCESSORIES.
e. Interconnected Equipment AC Leakage Test
Avoid shock hazards. The instrument, accessory, or cable(s) to which this instrument is connected should have the applicable sections of the leakage resistance cold check and the leakage current hot check performed. Do not connect this instrument to an antenna, cable or accessory that exhibits excessive leakage currents.
2. Read and comply with all caution and safety-related notes on or inside the instrument cabinet, and on the chassis.
3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this instrument. Design alterations and additions, including, but not limited to, circuit modifications and the addition of items such as auxiliary audio output connections, cables and accessories, etc., might alter the safety characteristics of this instrument and create a hazard to the user. Any design alterations or additions will void the manufacturer's warranty and will make you, the servicer responsible for personal injury or property damage resulting therefrom.
4. 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, and (c) the AC supply. Always inspect in all areas for pinched, out-of-place, or frayed wiring. Do not change spacing between components and the printed-circuit board. Check AC power cord for damage.
5. 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.
6. PRODUCT SAFETY NOTICE - Many electrical and mechanical parts have special safety-related characteristics, some of which are often not evident from visual inspection, nor can the protection they give be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified in this service data by a ( ! ) on schematics and in the parts list. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part in this service data parts list might create shock, fire and/or other hazards. Product Safety is under review continuously and new instructions are issued whenever appropriate. For the latest information, always consult the appropriate current service literature.
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RP7930A VOLTAGE CHARTS
1-15
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RP7930A VOLTAGE CHARTS
1-16
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RP7930A ALIGNMENTS
1-7
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RP-7930A ALIGNMENTS
1-8
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RP-7930A ALIGNMENTS
1-9
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RP-7930A ALIGNMENTS
1-10
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RP-7930A ALIGNMENTS
1-11
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RP-7930A ALIGNMENTS
1-12
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RP7930A IC LEAD IDENTIFICATIONS
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RP7930A IC LEAD IDENTIFICATIONS
1-18
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RP7930A IC LEAD IDENTIFICATIONS
KA9220C
1-19
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RP7930A IC LEAD IDENTIFICATIONS
1-20
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RP7930A IC LEAD IDENTIFICATIONS
1-21
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RP7930A IC LEAD IDENTIFICATIONS
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EXPLODED VIEW RP7930A
1-24
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RP7930A SPECIFICATIONS
1-5
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RP7930A SPECIFICATIONS
1-6
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RP7930A TROUBLESHOOTING GUIDES
1-13
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RP7930A TROUBLESHOOTING GUIDES
1-14
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REPLACEMENT PARTS
1 - 3
March
2000
RP7930A
1 - 3
BEFORE REPLACING PARTS, READ THE FOLLOWING: Approved Substitute Stock Numbers - Before ordering stock numbers
in the part list, look for an approved substitute stock number in the current Price Schedule. This will minimize your service time and avoid ordering parts you already have in stock.
PRODUCT SAFETY NOTE: Components marked with a critical safety symbol have special characteristics important to safety. Before replacing any of these components, carefully read the PRODUCT SAFETY NOTICE in the basic service data. Do not degrade the safety of the set through improper servicing. Although assemblies as a whole may not be marked with a critical safety symbol , replacement of assemblies with other assemblies not approved may result in a safety hazard.
Critical Safety Symbol Not Eligible For Warranty
@NOTE: When ordering components that are listed more than once in this part list, always adhere to the serial number application guidelines given in the description column. If a serial number application guideline is not given, always select the component with a value, rating, other specification or identification marking(s) that match those of the corresponding component in the instrument you are servicing.
StockSymbol DescriptionDrawing Symbol StockDescription Drawing
Warranty Status of Assemblies and Parts - All assemblies and components shown in this part list are eligible for warranty exchange or replacement except those with a dot shown to the left of the Description. Assemblies and components with a dot to the left of the Description are NOT eligible for warranty exchange or replacement.
Warranty replacement of cabinet parts requires the approval of a Thomson Consumer Electronics Field Service Manager.
Warranty Status and Specifications of assemblies and components are subject to change without notice. Consult the TCE Parts Pricing Microfiche for the latest warranty status information.
RP-7930A CABINET & CHASSIS ASY
1 6A26787 LENS CASS DOOR43-07930-02 2 9A26788 DOOR CASS66-07930-02 3 3A26789 SPRING CASS DOOR36-07930-00 4 6A26790 LENS DISPLAY43-07941-01 5 89A26791 GRILLE SPEAKER R41-07930-01 6 45A26792 FOOT RUBBER81-00088-00H 7 98A26793 CABINET FRONT60-07930-01 14 43A33830 KNOB CD R53-07930-05 15 43A33831 KNOB CD L53-07930-04 17 89A26799 GRILLE SPEAKER L41-07930-00 18 43A25141 KNOB TUNING51-00088-00 34 43A30712 BUTTON, CASSETTE COMM53-07930-01 39 2A33832 BATTERY TERMINAL74-13244-002 42 98A26800 CABINET BACK61-07930-01 46 38A25143 TERMINAL BATTERY74-13244-01A 48 43A26802 KNOB SLIDE52-00088-00 50 9A30713 COVER, HANDLE57-07930-02 51 78A26803 HANDLE W/COVER57-07930-01 56 43A25150 KNOB ROTARY51-00088-02 66 2A33833 PLATE CLAMPER39-00414-16W 67 2A25164 HOLDER CLAMPER55-00141-01 68 2A33834 CLAMPER55-00414-00 72 9A26811 DOOR CD66-07930-01 73 43A25160 BUTTON EJECT53-00088-03 78 3A26814 SPRING CD DOOR36-07930-01 COR 66A21431 CORD AD30-00030-00G
ELECTRICAL COMPONENTS
ANT 82A33841 ANTENNA WHIP23-07930-00 BAR 82A33837 ANTENNA BAR AM21-10080-00T CD 73A33843 CD PICK UP TCP-110P98-00088-00 D101 16A31623 SILICON DIODE02-04148-00 D102 16A31623 SILICON DIODE02-04148-00 D103 16A11218 DIODE02-01043-00 D104 17A25173 DIODE LED K-504HL02-50000-02T D201 198597 DIODE02-04001-00 D202 198597 DIODE02-04001-00 D203 198597 DIODE02-04001-00 D204 16A14915 DIODE ZENER 6.8V 1/2W02-50068-00 D205 16A31623 SILICON DIOD02-04148-00 D207 16A24329 DIODE 7.5V 1/2W02-50075-00 D208 16A31623 SILICON DIOD02-04148-00 D801 16A31623 SILICON DIOD02-04148-00 D802 16A31623 SILICON DIOD02-04148-00 D807 16A31623 SILICON DIOD02-04148-00 D808 16A31623 SILICON DIOD02-04148-00 D810 16A31623 SILICON DIOD02-04148-00 IC101 EA33X9422 IC03-07205-00 IC102 33A25174 IC AN702403-07024-00 IC201 EA33X9424 IC03-07312-00 IC202 33A31745 IC TA7769P03-07769-00 IC801 33A26826 IC KA9220B03-09220-01 IC802 33A26828 IC KS9282B03-09282-00 IC803 33A26827 IC KA927003-09270-00 IC804 33A26829 IC KS57C0104-1203-57010-43 IC805 33A26775 IC KA9258D03-09258-00 J201 8A33842 JACK STEREO HDPH12-00035-31 LCD1 63A26831 DISPLAY LCD91-00088-03 MEC 73A33835 MECHANISM CD ASY00-00231-01
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REPLACEMENT PARTS
March
2000
1 - 4
StockSymbol DescriptionDrawing Symbol StockDescription Drawing
Q201 15A26816 TRANSISTOR 9013G01-09013-07 Q202 15A11215 TRANSISTOR01-09014-03 Q203 15A26816 TRANSISTOR 9013G01-09013-07 Q204 15A11215 TRANSISTOR01-09014-03 Q205 15A11215 TRANSISTOR01-09014-03 Q206 15A26815 TRANSISTOR 2SD201201-02012-00 Q207 15A15170 TRANSISTOR01-09015-03 Q208 15A11215 TRANSISTOR01-09014-03 Q209 15A11215 TRANSISTOR01-09014-03 Q801 15A10368 TRANSISTOR KSA928AY01-00928-00 Q802 15A12584 TRANSISTOR DTC124ES01-00124-05 Q803 15A25193 TRANSISTOR 2SA131701-01317-00 SOC 8A25151 SOCKET AC POWER12-00004-09 SPE 95A30705 SPEAKER, 3 1/2W 80R 3W14-03508-34O SW1 39A26820 SWITCH TACT16-10102-03S SW101 39A26770 SWITCH SLIDE 2P2T16-10202-44L SW2 39A26820 SWITCH TACT16-10102-03S SW201 39A25182 SWITCH PUSH16-10902-02L SW202 39A25187 SWITCH PUSH16-10202-15L SW203 39A33839 SWITCH16-10603-09L SW204 39A25184 SWITCH SLIDE16-10203-58L SW3 39A26820 SWITCH TACT16-10102-03S SW4 39A26820 SWITCH TACT16-10102-03S SW5 39A26820 SWITCH TACT16-10102-03S SW6 39A26820 SWITCH TACT16-10102-03S SWI 39A25181 SWITCH MICRO16-10101-07H TRA 88A33838 TRANSFORMER POWER15-00088-05 VR101 42A33836 RESISTOR VAR17-31103-08 VR201 49A25186 RES CONTOL 50K18-51503-09 VR202 42A33840 RESISTOR VAR17-31501-08 X801 41A26776 CRYSTAL 16.9344MHZ04-16934-41
(Continued)
MISCELLANEOUS
LAB 4A30813 LABEL POPPOPRP7930 USE UCRP7930 USE & CARE GUIDEUCRP7930
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RP7930A BLOCK DIAGRAM
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CD MECHANISM/DISPLAY SCHEMATIC RP7930A
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MAIN/TUNER/TAPE/POWER/SERVO SCHEMATIC RP7930A
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