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PRECAUTIONS SAFETY PRECAUTIONS
SERVICE SERVICE WARNING
Only qualified service technicians who are familiar with safety checks and guidelines should perform service work. Before replacing parts, disconnect power source to protect electrostatically sensitive parts. Do not attempt to modify any circuit unless so recommended by the manufacturer. When servicing the receiver, use an isolation transformer between the line cord and power receptacle.
SAFETY CHECKS -- FIRE AND SHOCK HAZARD
SET 4631
Leakag Checks for Receivers Ground Cold Leakage Checks for Receivers with Isolated Ground
Unplug the AC cord, connect a jumper across the plug prongs, and turn the power switch on (if applicable). Use an ohmmeter to measure the resistance between the jumped AC plug and any exposed metal cabinet parts such as antenna screw heads, control shafts, or handle brackets. Exposed metal parts with a return path should measure between 1M ohms and 5.2M ohms. Parts without a return path must measure infinity.
4631 Technical Service Data
INDEX
SERVICING OLT CRT SERVICING THE HIGH VOLTAGE AND CRT
Use EXTREME CAUTION when servicing the high voltage circuits. To discharge static high voltage, connect a 10K ohms resistor in series with a test lead between the receiver ground and CRT anode lead. DO NOT lift the CRT by the neck. Always wear shatterproof goggles when handling the CRT to protect eyes in case of implosion.
Leakag Check Hot Leakage Current Check
Plug the AC cord directly into an AC outlet. DO NOT use an isolation transformer. Use a 1500 ohms, 10W resistor in parallel with a .15µF capacitor to connect between any exposed metal parts on the receiver and a good earth ground. (See figure below.) Use an AC voltmeter with at least 5000 ohms per volt sensitivity to measure the voltage across the resistor. Check all exposed metal parts and measure voltage at each point. Voltage measurements should not exceed .75VAC, 500µA. Any value exceeding this limit constitutes a potential shock hazard and must be corrected. If the AC plug is not polarized, reverse the AC plug and repeat exposed metal part voltage measurement at each point.
X-RAY RADIATION OLT X-RAY RADIATION AND HIGH VOLTAGE LIMITS
Be aware of the instructions and procedures covering X-ray radiation. In solid-state receivers and monitors, the CRT is the only potential source of X-rays. Keep an accurate high voltage meter available at all times. Check meter calibration periodically. Whenever servicing a receiver, check the high voltage at various brightness levels to be sure it is regulating properly. Keep high voltage at rated value, NO HIGHER. Excessive high voltage may cause X-ray radiation or failure of associated components. DO NOT depend on protection circuits to keep voltage at rated value. When troubleshooting a receiver with excessive high voltage, avoid close contact with the CRT. DO NOT operate the receiver longer than necessary. To locate the cause of excessive high voltage, use a variable AC transformer to regulate voltage. In present receivers, many electrical and mechanical components have safety related characteristics which are not detectable by visual inspection. Such components are identified by a # on both the schematic and the parts list. For SAFETY, use only equivalent replacement parts when replacing these components.
MODEL 27GT630TX51 (CHASSIS CTC203AA5)
Error Codes Chart .................................. High Voltage Shutdown Test .................. IC Functions ........................................... Important Parts Information ................... Miscellaneous Adjustments .................... Parts List ................................................. Placement Chart ..................................... Safety Precautions .................................. Schematic Component Location ............ Schematic Notes ..................................... Schematics Audio ............................................... Gemstar 4 ........................................ Power Supply .................................. Television ........................................ Test Equipment ....................................... Tuner Information ..................................
1 1 2 1 1 4 1 1 1 2 4 3 2 2 1 1
Model 27GT630TX51 (Chassis CTC203AA5)
GE
4631
4631
Representative Model
GENERAL GUIDELINES
Perform a final SAFETY CHECK before returning receiver to customer. Check repaired area for poorly soldered connections, and check entire circuit board for solder splashes. Check board wiring for pinched wires or wires contacting any high wattage resistors. Check that all control knobs, shields, covers, grounds, and mounting hardware have been replaced. Be sure to replace all insulators and restore proper lead dress.
covera verag Essential coverage for servicing a television receiver... servicing television receiver...
· Schematics Schematics
· Component locations
OLT SHUTDOWN HIGH VOLTAGE SHUTDOWN TEST
Momentarily short BC14901 at base of Q14901 to ground. The receiver should lose raster and sound. If receiver does not lose raster and sound, the shutdown circuit should be repaired. To resume normal operation, remove AC power for approximately 30 seconds and then turn the receiver on.
· Parts list arts
Coverage includes these additional models and chassis:
Models 27GT630TX51 27GT630YX51 Chassis CTC203AA9 CTC203AA5
The listing of any available replacement part herein in no case constitutes a recommendation, warranty, or guarantee by SAMS Technical Publishing as to the quality and suitability of such replacement part. The numbers of the listed parts have been compiled from information furnished to SAMS Technical Publishing by the manufacturers of the specific type of replacement part listed. Reproduction or use, without express permission, of editorial or pictorial content, in any manner, is prohibited. No patent liability is assumed with respect to the use of the information contained herein.
© 2002 5436 West 78th Street Indianapolis, IN 46268-4149
UPC HERE 02PF02003
Address, For Supplier Address, PHOTOFA Annual Index See PHOTOFACT Annual Index
Printed in the United States of America 5 4 3 2 1
Page 1
SET 4631
GE
SEPTEMBER 2002
SET 4631
Page 1
SET 4631
TUNER INFORMATION
OLT CHART TUNER VOLTAGE CHART
Pin
AGC (1) NC (2) +5V (3) CLK (4) DATA (5) +5V (6) +5V (7) +32V (9) IF (11)
SCHEMATIC COMPONENT LOCATION GUIDE SCHEMATIC LOCATION
C11403 C11450 C11451 C11453 C11454 C11455 C11456 C11501 C11502 C11503 C11504 C11506 C11507 C11601 C11602 C11603 C11604 C11605 C11606 C11607 C11608 C11609 C11610 C11611 C11612 C11613 C11614 C11615 C11616 C11617 C11618 C11619 C11620 C11621 C11622 C11623 C11624 C11625 C11626 C11627 C11628 C11629 C11630 C11631 C11632 C11633 C11701 C11702 C11703 C11704 C11705 C11906 C11907 C11908 C11909 C11910 C11912 C11913 C11914 C12301 C12302 C12303 C12304 C12305 C12306 C12307 C12308 C12310 C12312 C12313 C12314 C12701 C12702 C12703 C12704 C12706 C12707 C12708 C12709 C12710 C12711 C12712 C12713 C12714 C12715 C12716 C12717 C5 B46 B46 C51 C51 C51 C51 D48 D48 D51 D51 D46 E46 A46 C46 C46 C48 D48 C48 C48 B46 B46 C46 B46 D46 D46 C46 C46 C45 A47 D46 A46 C48 B48 B48 D48 A46 D48 A47 A47 A48 B47 A49 A49 A46 A46 E45 D46 D46 E46 E46 A50 B50 C51 B51 A50 B50 A52 B52 C1 B1 D29 A4 A5 C2 C3 C3 B4 C28 C3 C28 A9 C11 C11 C10 D4 C28 C28 B11 B11 B11 A28 C11 C13 B13 B13 C10 C12718 C12801 C12802 C12803 C12805 C12806 C12807 C13102 C13114 C13119 C13141 C13163 C13201 C13202 C13205 C13501 C13502 C13503 C13504 C14101 C14102 C14103 C14104 C14105 C14106 C14107 C14108 C14109 C14110 C14111 C14112 C14113 C14114 C14115 C14116 C14118 C14119 C14121 C14122 C14124 C14125 C14126 C14127 C14150 C14151 C14152 C14153 C14154 C14155 C14158 C14159 C14160 C14201 C14203 C14203 C14204 C14204 C14205 C14207 C14208 C14209 C14210 C14211 C14212 C14213 C14302 C14303 C14304 C14305 C14306 C14309 C14310 C14320 C14321 C14322 C14401 C14402 C14403 C14404 C14405 C14406 C14502 C14504 C14505 C14506 C14507 C14521 C11 C9 B8 C10 B8 C9 C9 A10 D29 B36 D33 C24 A29 A29 A43 E32 E32 E32 D31 B19 B20 B19 C19 C19 C20 C20 A20 A22 A24 B23 B23 B21 B24 B21 C23 A28 B24 B24 A24 A22 B20 C19 C20 C28 C26 B24 B24 C27 B28 B24 B23 B27 A17 A19 A19 A19 B19 A20 B17 A17 A18 A18 B18 C17 C17 E5 E5 E6 E6 E6 E5 E5 D2 D2 E4 E7 E9 D9 D9 D10 E8 D6 D8 D7 E21 E21 D5 C14701 C14702 C14703 C14704 C14706 C14710 C14711 C14901 C14902 C14903 C14904 C15101 C17416 C17417 C26401 C26402 C26404 C26408 C26409 C26410 C26411 C26412 C26413 C26414 C26415 C26418 C26419 C26422 C26425 C26426 C26427 C26428 C26429 C26430 C26432 C26433 C26435 C26437 C26438 C26439 C26440 C26441 C26444 C26445 C26446 C26447 C26448 C26449 C26450 C26451 C26452 C26453 C26454 C26455 C26456 C26457 C26458 C26459 C26460 C26461 C26466 C26467 C26468 C26469 C26470 C26471 C26472 C26473 C26474 C26477 C26487 C26490 C26499 C26901 C26902 C26910 C26915 C26916 CF12201 CF12301 CR11401 CR11501 CR11502 CR11503 CR11504 CR11505 CR11601 E20 D19 D19 D19 E20 E3 E21 E3 E2 D3 D3 D15 B35 C35 D33 C33 E41 A31 A32 D34 A34 D31 E30 B34 A34 E34 C30 D34 B34 C34 B30 C31 B31 B31 A32 D33 D31 C32 B32 B32 B41 C30 C29 B24 E30 B28 D28 D28 E28 E28 E27 E27 E27 E28 E28 E28 E27 E27 E26 E28 D28 E26 E28 D27 A43 E27 D33 B33 D31 E27 D27 D28 D26 B27 B27 B27 B5 B5 A3 B4 C5 D49 D49 D51 D23 D24 B49 CR11602 CR11603 CR12301 CR12702 CR13501 CR14101 CR14102 CR14103 CR14104 CR14105 CR14106 CR14107 CR14108 CR14109 CR14110 CR14111 CR14113 CR14114 CR14115 CR14117 CR14201 CR14202 CR14203 CR14204 CR14205 CR14210 CR14301 CR14401 CR14501 CR14701 CR14702 CR14704 CR14901 CR14902 CR26901 DY1 F14201 FB13201 FB14106 FB14107 FB14108 FB14109 FB14110 FB14114 FB14401 FB14501 FB26401 FB26402 FB26403 FB26404 IR13201 J11401 J11401 J11401 J13201 K14201 K14201 L12301 L12302 L12303 L12305 L12705 L14101 L14102 L14103 L14105 L14200 L14401 L14402 L15101 L26401 L26901 PW14101 Q11501 Q11603 Q11901 Q12301 Q12701 Q12702 Q12703 Q12704 Q13101 Q13103 Q13104 Q13105 Q13301 Q13302 C45 C45 B5 E4 E32 B18 B19 C19 C19 C19 A22 B23 B21 C21 B23 D21 E24 E24 C27 C19 A19 A18 A19 A18 B18 A19 E5 D10 D7 E19 D19 E20 E3 E3 B28 D9 A17 A42 B22 A22 A22 B20 A24 B21 E8 D5 D26 E24 B41 A43 A29 C4 B45 B45 A44 A18 B18 B4 B3 B4 C27 C27 B28 B22 A24 A23 A18 E7 E9 D20 E27 B27 A17 D23 C46 C49 B4 C13 A13 B13 B13 A10 D30 B35 B35 D29 D30 Q13501 Q13503 Q14101 Q14102 Q14103 Q14104 Q14105 Q14106 Q14107 Q14115 Q14201 Q14301 Q14302 Q14401 Q14901 Q15101 Q15102 Q15103 Q26401 Q26402 Q26403 Q26404 Q26405 Q26410 Q26411 Q26450 Q26451 Q26901 Q26903 R11401 R11402 R11403 R11404 R11405 R11406 R11460 R11461 R11462 R11463 R11501 R11502 R11503 R11504 R11505 R11506 R11507 R11508 R11509 R11510 R11511 R11512 R11513 R11514 R11601 R11602 R11603 R11604 R11605 R11606 R11607 R11608 R11609 R11611 R11612 R11613 R11614 R11615 R11616 R11617 R11618 R11619 R11620 R11621 R11622 R11623 R11624 R11625 R11626 R11627 R11628 R11629 R11630 R11631 R11701 R11702 R11703 R11704 D32 D32 B20 B19 B19 A25 A25 D20 D21 B27 B17 E6 E5 E7 D3 A14 C14 B14 C30 C30 D25 E25 B32 A43 B43 B42 A42 B7 C5 B46 B46 B46 B46 C4 C5 B46 B46 C51 C51 D48 D48 D48 D48 D49 D48 D49 D50 D50 D50 D46 E46 D23 C23 A46 D47 C47 C47 B46 D46 D46 D46 D46 A48 A48 B48 A49 C46 C46 B46 A46 C45 C45 B48 B48 B49 B49 A49 A49 C46 A46 A46 A46 A46 D45 E45 D45 D46 R11705 R11706 R11707 R11708 R11709 R11909 R11910 R11911 R11912 R11913 R11915 R11917 R11918 R11919 R11920 R11921 R12201 R12302 R12303 R12304 R12305 R12306 R12307 R12308 R12309 R12310 R12311 R12314 R12315 R12316 R12317 R12318 R12701 R12702 R12703 R12704 R12705 R12706 R12707 R12708 R12710 R12711 R12712 R12713 R12714 R12715 R12716 R12717 R12718 R12719 R12720 R12721 R12722 R12723 R12724 R12725 R12726 R12727 R12731 R12801 R12802 R12803 R12804 R12805 R12806 R12807 R12808 R13101 R13102 R13103 R13108 R13109 R13110 R13111 R13112 R13113 R13118 R13119 R13121 R13122 R13123 R13124 R13125 R13126 R13128 R13130 R13131 D46 E46 E47 D45 E45 C51 A50 A50 B50 B50 B49 C49 C49 C49 A52 B52 A3 B2 B1 B4 D29 E24 B5 A5 B4 B4 B4 C2 C2 C3 B4 B4 C11 E4 C11 A9 C10 C12 A12 B12 B2 B2 B12 B12 B11 C13 C13 C13 C13 A13 A13 A13 A13 B13 B13 B13 C11 B13 D3 C9 C9 C10 C9 B8 C9 C9 C9 A10 A10 A10 A9 D29 D29 D30 D30 C30 B30 B30 B27 A30 B23 C29 C29 B30 B35 C35 B35 R13134 R13135 R13136 R13139 R13142 R13143 R13144 R13165 R13166 R13169 R13176 R13180 R13181 R13182 R13183 R13184 R13185 R13188 R13189 R13190 R13191 R13192 R13198 R13201 R13202 R13203 R13314 R13315 R13316 R13317 R13318 R13319 R13320 R13321 R13322 R13501 R13503 R13504 R13505 R13508 R13510 R13511 R13512 R14101 R14102 R14103 R14104 R14105 R14106 R14107 R14108 R14109 R14110 R14111 R14112 R14113 R14114 R14115 R14116 R14117 R14118 R14119 R14120 R14121 R14122 R14123 R14124 R14126 R14127 R14128 R14129 R14130 R14132 R14135 R14151 R14153 R14155 R14157 R14158 R14159 R14201 R14202 R14204 R14205 R14206 R14303 R14304 A35 A35 B35 A36 A35 D32 E35 A32 B35 C35 B35 B35 B35 B34 E29 E30 E29 C30 B30 B30 B30 D35 A32 A30 A29 A44 D30 D29 D30 E29 E29 E29 E29 E30 E29 E32 E32 E33 D32 D32 D33 E31 D31 B18 B18 B19 B19 C20 B19 B19 B20 B19 B19 C19 C19 C20 C20 D20 D20 A20 A24 A23 C23 A32 A25 A25 B22 D20 D21 D21 C20 C23 D21 D20 C26 B23 B27 B27 B27 B27 A17 A18 A20 A17 B17 D1 E5 R14305 R14306 R14309 R14310 R14318 R14319 R14320 R14321 R14322 R14323 R14324 R14326 R14327 R14328 R14401 R14402 R14403 R14501 R14503 R14504 R14506 R14507 R14508 R14509 R14520 R14701 R14702 R14703 R14704 R14705 R14706 R14851 R14901 R14902 R14903 R14904 R14906 R14909 R14910 R15101 R15102 R15103 R15104 R15105 R15106 R15107 R15108 R15109 R15118 R17130 R17402 R17403 R17409 R17411 R26401 R26402 R26403 R26404 R26405 R26406 R26410 R26411 R26412 R26413 R26414 R26415 R26416 R26417 R26418 R26419 R26420 R26421 R26422 R26423 R26427 R26430 R26431 R26432 R26433 R26434 R26435 R26437 R26438 R26439 R26441 R26443 R26444 E6 E6 E5 E4 E1 E1 D2 D4 E4 D4 D1 D1 D1 D5 D10 E7 E10 D8 D5 D6 D6 D8 E20 E21 D5 D19 D20 A16 E3 E3 D3 D4 E3 E2 E2 D3 E3 D3 D2 A15 C15 B15 A15 C15 B15 A14 C14 B14 D16 C1 B35 C35 C35 C35 C33 C43 C42 C42 C41 E41 A42 A31 A31 D34 A34 D31 E31 B34 A34 B42 B42 C31 E34 C30 D34 B34 C34 B31 C31 B31 B31 A31 D33 D33 D31 C32 B32 R26445 R26446 R26447 R26448 R26449 R26450 R26451 R26452 R26453 R26454 R26455 R26456 R26457 R26458 R26459 R26460 R26461 R26462 R26463 R26464 R26465 R26466 R26467 R26468 R26469 R26475 R26477 R26478 R26484 R26486 R26487 R26488 R26489 R26490 R26491 R26492 R26495 R26496 R26497 R26498 R26499 R26506 R26901 R26914 R26915 R26916 R26917 R26921 R26922 R26923 R26924 R26925 R5050 RN14501 RT14201 SF12301 SP1 SP2 SW13201 SW13202 SW13203 SW13204 SW13205 SW13206 T14101 T14201 T14301 T14401 T14401 U11501 U11501 U11501 U11501 U11601 U11602 U11602 U11900 U11901 U12101 U12101 U12101 U12101 U13102 U14101 U14102 U14103 U14104 B32 B32 D30 C30 C30 C30 C30 C29 A41 A41 E31 A41 A41 C32 B32 B32 B33 D28 E25 E27 E27 E25 E25 E26 B39 E33 C38 C30 B32 B31 B32 B32 B32 A42 B42 B43 B43 B43 B43 A43 A42 E27 B27 C5 C5 B6 B7 C5 C5 B5 B5 C5 D12 D5 A18 B1 A52 B52 B29 B29 B29 B29 B29 B29 A21 A17 E7 D11 E18 D45 D49 D50 E45 A47 A48 B49 A51 B51 A4 B2 B9 D2 A36 C19 D19 C23 A26 U14150 U14501 U26401 U26401 U26402 U26403 U26404 U26903 V101 Y12801 Y14101 Y26401 C27 D7 C32 C41 A39 A37 E26 B6 C16 B10 D2 C33
TUNER TERMINAL GUIDE
VHF High Band
2.3V 4.2V 5.2V 5.0V 5.0V 5.2V 5.2V 34.2V 0V
Low VHF Low Band
2.4V 1.3V 5.2V 5.0V 5.0V 5.2V 5.2V 34.2V 0V
UHF Band
2.8V 5.5V 5.2V 5.0V 5.0V 5.2V 5.2V 34.2V 0V
(2)
(1)
(4)
(6)
(8)
(10)
Important Par Information arts Important Parts Information
The parts listed here are those not usually available from a well-stocked supply cabinet or bin. Where items may be replaced with equivalent parts, several alternates are shown from participating vendors. On the parts lists, safety items are marked with a # to remind you that only exact replacements are recommended for these items. When ordering parts, state the model number, part number, and description.
Par arts Obtaining Parts
Many of these parts are available from your local Sams authorized distributor or the manufacturer of the equipment. Call Sams for the name of your nearest distributor:
800-428-7267
Or consult the Sams Annual Index for the address of the original equipment manufacturer.
Participating Vendors articipating endors
Information on test equipment and replacement parts is listed in these pages for the following participating vendors. Consult the Sams Annual Index for their current address.
NTE Electronics, Inc. (NTE)
Sencore, Inc.
NOTE: VHF Low Band voltages taken on channel 2. VHF High Band voltages taken on channel 7. UHF Band voltages taken on channel 14
(3)
(5)
(7)
(9)
(11)
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MISCELLANEOUS ADJUSTMENTS
NOTE: All procedures require an antenna connected and power applied to the set.
ERROR CHART ERROR CODES CHART
Error Error Code DEC HEX 0 1 3 4 8 9 10 11 16 18 23 24 25 34 44 102 128 160 186 196 198 00 01 03 04 08 09 0A 0B 10 12 17 18 19 22 2C 66 80 A0 BA C4 C6 Error Error Location No error code 16.0V fault 12.0V run fault T4 Chip T4 Chip T4 Chip (POR) F2 PIP module error (POR) Stereo decoder (POR) Run IIC Bus held low Standby IIC Bus held low Gemstar 4 Board Gemstar 4 Board Gemstar 4 Board Gemstar Board F2 PIP module error Octal DAC Stereo decoder Main or PIP tuner EEPROM T4 Chip Main tuner PLL/DAC Main tuner PLL/DAC Condition Indicated 16.0V STBY source is failing. 12.0V source is failing. Run supply failed. X-ray protection caused high voltage shutdown. Power supply problem at (POR) power on reset. Power supply problem at (POR) power on reset/PIP. Power supply problem at reset/Stereo decoder. Run IIC clock or data held low. Standby IIC clock or data held low. Guide fatal error on set using Gemstar 4 Board. Task monitor error on set using Gemstar 4 Board. Watchdog error on set using Gemstar 4 Board. Gemstar fails to acknowledge. F2PIP fails to acknowledge. Octal DAC fails to acknowledge. Stereo decoder fails to acknowledge. Main or PIP tuner EEPROM fails to acknowledge. T4 Chip fails to acknowledge. Main tuner PLL IC fails to acknowledge. Main tuner DAC IC fails to acknowledge.
TEMPERATURE COLOR TEMPERATURE
NOTE: See Service Adjustment Parameters to change drive and bias values. Press menu button for collapsed raster service line. Disconnect the antenna. Preset the red, green, and blue drive values to 32. Adjust screen control for a service line that is just visible. Adjust red, green, and blue drives to obtain a white raster. Check the low light to high light gray scale tracking. Repeat the procedure, if necessary, to obtain the best performance.
OLT HIGH VOLTAGE CHECK
Tune in a picture. Set brightness, contrast, and color to MINIMUM. Connect a high voltage probe to the CRT anode. High voltage should measure 28kV to 30kV.
SERVICE SERVICE MENU
The following adjustment procedures are accessed thru a service menu. To access the service menu, turn the receiver on, press the menu button and hold it down while pressing the power button. While holding down the menu button, release the power button and press the volume + button. The screen will display a one line menu, on the left the parameter P0, and on the right the value of that parameter V0. Release buttons. Adjustments are made by selecting the proper parameter and changing the value of that parameter. To change the parameter number use channel up and down buttons. To adjust the current value of that parameter use volume + and - buttons. To access and change any of the adjustments, the proper parameter pass number must be entered. This information is listed at the beginning of the alignment. When these parameters are modified, the T-Chip and the corresponding EEPROM are updated. All service adjustments are bus controlled, except focus and screen. NOTE: In order to adjust the RF AGC, audio or video levels, tuner, PIP, or stereo circuits, the ChipperCheck hardware and software must be used. This can be purchased from Thomson Electronics. Before making any changes to any of the values, record the On Set values.
SERVICE SERVICE ADJUSTMENT PARAMETERS
Parameter Parameter No. Name 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Pass number for service adjustment parameters. Error Code 1 Error Code 2 Error Code 3 Horizontal Phase EW DC (Width) EW Amplitude EW Tilt Top Corner Pin Correction Bottom Corner Pin Correction Vertical DC Vertical Size Vertical Countdown Mode Red Bias Green Bias Blue Bias Red Drive Green Drive Blue Drive Gemstar Horizontal OSD Position Gemstar Vertical OSD Position Gemstar PIP Horizontal Position Gemstar PIP Vertical Position Gemstar PIP Window Vertical Size On Set Value Must set to 76. 0 0 0 10 16 8 8 2 2 33 84 0 30 15 34 41 33 32 166 68 40 43 3 Value Range Range 0 - 255 0 - 255 0 - 255 0 - 15 0 - 31 0 - 15 0 - 15 0-7 0-7 0 - 63 0 - 127 0-3 0 - 127 0 - 127 0 - 127 0 - 63 0 - 63 0 - 63 0 - 255 0 - 255 0 - 255 0 - 255 0 - 13 Comment May not advance until value is set to 76. Displays the first error detected. Set to 0 before exiting. See Error Codes Chart. Displays the second error detected. Set to 0 before exiting. See Error Codes Chart. Displays the last error detected. Set to 0 before exiting. See Error Codes Chart. Tune in a crosshatch pattern, adjust to center the pattern on the screen. Tune in a crosshatch pattern, adjust for slight horizontal overscan. Set value to 8. Set value to 8. Set value to 2. Set value to 2. Tune in a crosshatch pattern, adjust to center vertically. Tune in a crosshatch pattern, adjust for slight vertical overscan. Set value to 0. ( 0 = Standard, 1 = Non-Standard, 2 = 50Hz, 3 = 48Hz ) Press menu button on the TV set for setup line. Press menu button on the TV set for setup line. Press menu button on the TV set for setup line. Set value to 166. Set value to 68. Set value to 40. Set value to 43. Set value to 3.
ERROR ERROR CODES
If certain failures occur, the matching error codes will be stored in the EEPROM. These error codes will be displayed in parameters 1, 2, and 3. The first failure error code will be stored at parameter 1 and the second failure error code will be stored at parameter 2. Parameter 3 will be updated to display the most recent failure occurred in the chassis. If a failure of a bus IC occurred, the normal acknowledgment checking of that bus will be disabled in the service mode and the address of that IC which failed will be stored in one of the error code parameters. After every repair is done to the chassis it is recommended to check the error code parameters, and reset them back to value 0.
EQUIPMENT TEST EQUIPMENT
Test equipment listed by participating manufacturer illustrates typical or equivalent equipment used by Sams engineers to obtain measurements. This equipment is compatible with most types used by field service technicians.
Equipment Oscilloscope Generators RGB Multiburst Signal Color Bar TV Stereo Digital VOM Frequency Meter Hi-Voltage Probe Accessory Probes
Sencore No. SC3100 CM2125 VG91 VG91 VG91 SC3100 SC3100 HP200 TP212
Equipment Isolation Transformer Capacitance Analyzer CRT Analyzer AC Leakage Tester Inductance Analyzer Flyback Yoke Tester Field Strength Meter Transistor Tester Horizontal Analyzer Video Analyzer
Sencore No. PR570 LC102 CR7000 PR570 LC102 TVA92 SL753 TF46 HA-2500 VG91, TVA92
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GE GE GE GE GE MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5)
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GE GE GE GE GE MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5)
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GE GE GE GE GE MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5)
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PARTS LIST
Item No.
CR11401 CR11501, 02 CR11503 CR11504 CR11505 CR11601 CR11602 CR11603 CR12301 CR12702 CR13501 CR14101 CR14102 CR14103, 04 CR14105 CR14106 CR14107 CR14108 CR14109 CR14110 CR14111 CR14113, 14 CR14115 CR14117 CR14201 Thru CR14204 CR14205 CR14210 CR14301 CR14401 CR14501 CR14701 CR14702 CR14704 CR14901 CR14902 CR26901 Q11501 Q11603 Q11901 Q12301 Q12701, 02, 03 Q12704 Q13101, 03, 04 Q13105 Q13301 Q13302 Q13501 Q13503 Q14101 Q14102 Q14103 Q14104 Q14105, 06, 07 Q14115 Q14201 Q14301 Q14302 Q14401 Q14901 Q15101, 02, 03 Q26401 Q26402 Q26403, 04 Q26405 Q26410 Q26411, 50, 51 Q26901 Q26903 U11501 U11601 U11602 U11900, 01 U12101 U13102 U14101 U14102 U14103 U14104 U14150 U14501 U26401 U26402 U26403 U26404 U26903
Type No.
MC3403N CXA2074S TDA7267 24C08 L7852CV KA7812 L78S75CV TDA8172 LA7221
Mfr. Par art Mfr. Part No.
232710 232709 215488 226463 232709 232709 159429 232709 227051 198589 164874 232221 198589 139706 198589 243636 217306 243636 176296 155276 198589 232709 215488 244224 147015 198589 214649 176296 140971 155276 241304 176296 207878 157301 159429 198602 215495 177788 215495 215496 215495 215496 215496 215495 215496 215495 215496 215495 244223 147665 232218 243955 215495 177788 219412 146851 215495 242224 147665 215497 215496 215495 177788 215496 215496 215495 215496 215495 241785 237930 237474 244225 252842 251160 223653 231525 241752 162394 231526 232109 249043 243436 254910 237664 227354
Par art NTE Part No.
NTE136A NTE5019T1 NTE519 NTE177 NTE519 NTE177 NTE519 NTE552 NTE116 NTE519 NTE136A NTE125 NTE519 NTE5331 NTE552 NTE558 NTE116 NTE552 NTE519 NTE177 NTE5019T1 NTE31 NTE159 NTE31 NTE287 NTE159 NTE2501 NTE31 NTE987 NTE966 NTE1788 -
Item No.
C11612, 13 C12303 C12714, 15, 16 C12718 C12803 C12805 C13102 C13205 C14102 C14108 C14111 C14112 C14113, 15 C14159, 60 C14201 C14203, 04 C14205 C14207 C14208 C14209 C14210, 11 C14212, 13 C14303 C14310 C14322 C14401 C14402 C14403 C14404 C14405 C14406 C14702 C14704 C14706 C14710 C14904 C15101 C17416, 17 C26401 C26402 C26411, 12, 15 C26422 C26425, 26, 35 C26437, 38, 39, 44 C26470 C26473 CF12201 CF12301 DY1 (1) F14201 FB13201 FB14106, 07, 08 FB14109, 10 FB14114 FB14401 FB14501 FB26401 FB26402 FB26403, 04 IR13201 J11401 J13201 K14201 KS15101 L12301 L12302 L12303 L12305 L12352 L12705 L14101 L14102 L14103 L14105 L14200 L14401 L14402 L15101 L26401 L26901 PW14101 R11511, 12 R11406 R11401, 03 R11616
Function/Rating
22pF 5% 50V NPO 120pF 5% 50V NPO 470pF 5% 50V NPO 100pF 5% 50V NPO 15pF 5% 50V NPO 120pF 5% 50V NPO 120pF 5% 50V NPO 220pF 2% 50V NPO .0168 1.6kV .0011 1.6kV 100µF 20% 63V .01 10% 50V 680pF 20% 1kV 100pF 5% 50V NPO .22 20% 250VAC .22 20% 125VAC 680pF 20% 1kV 680µF 20% 200V .0034 20% 120V 470pF 10% 250VAC .1 20% 120VAC .01 20% 1kV .01 20% 250VAC 470pF 5% 50V NPO 15pF 1% 250V NPO 39pF 5% 50V NPO 470pF 5% 50V NPO .0127 1.6kV .41 5% 250V 2.2µF 20% 200V .0047 10% 250V 470pF 5% 2kV 470pF 10% 50V NPO 680pF 20% 1kV 470pF 10% 500V NPO .01 20% 1kV .22 +80% -20% 25V .001 10% 3kV 43pF 5% 50V NPO 27pF 5% 50V NPO 30pF 5% 50V NPO 100pF 10% 50V NPO 200pF 10% 50V NPO 100pF 10% 50V NPO 47pF 5% 50V NPO 220pF 5% 50V NPO 47pF 5% 50V NPO Filter Filter Yoke Fuse Ferrite Bead Ferrite Bead Ferrite Bead Ferrite Bead Ferrite Bead Ferrite Bead Ferrite Bead Ferrite Bead Ferrite Bead Receiver Jack Jack Relay Socket 18µH 10µH 18µH 10µH 100µH 27µH 22µH 47µH Degaussing 6.8µH Horizontal Linearity 100µH 4.7µH Line Cord 100 5% 1/4W 56 2200 5% 1/2W 61.9K 1% 1/10W
Mfr. Par art Mfr. Part No.
194903 194902 214732 193340 200538 194902 194902 205551 237355 244208 237425 240934 190538 193340 231451 190538 190560 223330 250102 229322 190538 252973 214732 223899 202905 214732 246497 214752 247673 142765 227068 227050 190538 227050 137583 217298 120696 214029 246955 243467 243218 247000 243218 244069 249036 244069 195702 181125 175425 226467 237504 226467 237504 161237 215547 239201 226467 239201 244227 239389 214609 256573 233120 243894 215502 233056 175409 195711 175409 160186 190017 215504 244222 218764 191141 192844 160186 158726 244249 241251 198667 247610 246613 225705
Notes
4.5MHz 4.5MHz Horiz, 1.3mH, Vert 9.7mH 5Amp, 125V, Fast Acting Remote Assembly Gemstar IR Out Degaussing CRT AC, Polarized -
Item No.
# R11627 # R11909 R12201 R12302, 03 R12310 R12311 R12317 R12713 R12717, 21, 25 R12801 R12802 R12804 R12805 R13111 R13503 R13504 # R14101 # R14102 # R14105 # R14106 # R14107 # R14108 # R14109 R14112 R14115 R14116 # R14117 R14118 # R14124 R14126 R14135 # R14151 # R14201 # R14202 # R14205 # R14305 R14326 # R14401 # R14402 # R14403 # R14506 # R14507 # R14508 # R14701 # R14703 # R14704 # R14705 R14706 # R14901 # R14902 # R14903 R14909 # R15101, 02, 03 # R15104, 05, 06, 18 R26464 R26465 RN14501 # RT14201 SF12301 SP1, 2 SW13201 SW13202 SW13203 SW13204 SW13205 SW13206 # T14101 # T14201 # T14301 # T14401 (2) # TU17101 # V101 Y12801 Y14101 Y26401 # # # #
Function/Rating
10 5% 1/4W 16 5% 3W Nonflammable 680 2% 1/10W 120K 2% 1/10W 1800 2% 1/10W 620 2% 1/10W 240 2% 1/10W 750 2% 1/10W 220 2% 1/4W 15K 2% 1/10W 120K 2% 1/10W 13K 2% 1/10W 750 2% 1/10W 27K 2% 1/10W 64.9K 1% 1/10W 100K 1% 1/10W 47K 5% 3W 6800 5% 1/2W 68 5% 1/4W 2000 5% 1/4W 43 5% 1/4W .1 5% 3W Wirewound 750 5% 1/4W 680 2% 1/10W 140K .1% 1/4W 2800 .1% 1/4W 160 5% 7W Wirewound 33K 5% 3W 3.3 5% 2W Nonflammable 37.4K 1% 1/10W 3010 1% 1/4W 8.2 5% 1W 2.7M 10% 1/2W 1.8 10% 15W Wirewound 120K 20% 1/2W 2400 2% 3W 910 2% 1/10W 15K 5% 1W 91 5% 1/2W 820 5% 1W 13 5% 1W 1.5 5% 2W 1 5% 2W Wirewound 10 20% 1/2W .68 5% 3W Wirewound 82K 10% 1/2W 27K 10% 1/2W 1050 1% 1/4W 100 5% 1/4W Nonflammable 39.2K 1% 1/4W 40.2k 1% 1/4W 15K 2% 1/10W 10K 5% 2W Nonflammable 2200 5% 1/2W 3320 1% 1/16W 10K 1% 1/10W Resistor Network 8 Cold PTC Filter Speaker Switch Switch Switch Switch Switch Switch SMT Horizontal Drive Horizontal Output Tuner CRT Crystal Resonator Crystal Fuse Holder PC Board PC Board PC Board Transmitter
Mfr. Par art Mfr. Part No.
241259 244213 195939 207834 197903 205339 197624 202914 175324 205354 207834 205353 202914 205245 247691 215221 232213 179248 175039 175321 244214 244215 179317 195939 249013 244217 227958 243805 223680 215215 248594 235378 217662 200444 238903 235380 197627 190557 227249 175349 231508 237441 215577 241261 244221 239116 238958 231511 198667 190469 219026 205354 176656 247669 249040 252355 215499 207768 217318 243893 215500 215500 215500 215500 215500 215500 244228 190507 252843 244229 248782 HA68ADT275 161235 227064 217322 176642 249061 244468 253023 242779
Notes
SAW 60 X 90mm, 8 Ohms, 1.5W Power Volume Up Volume Down Channel Up Channel Down Menu CTF5800 A68ADT27X05 3.58MHz 507.5kHz 8Mhz For F14201 (2 Used) Analog Comb CRT GEMSTAR 4 Remote, CRK17TB1
#
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#
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GE GE
#
# # # # #
MODEL 27GT630TX51 (CHASSIS CTC203AA5) MODEL 27GT630TX51 (CHASSIS CTC203AA5)
# #
#
#
# #
# #
# #
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# For SAFETY use only equivalent replacement part. (1) Bonded part of CRT. (2) Screen and focus controls are part of T14401.
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SET 4631
SET 4631
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