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Computer monitors - CRT, TFT, LCD, touch screen, plasma display - service manuals and repair information

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File name MON95-003.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: Monitor 95-003 MODEL: CMG7377L SUBJECT: CRT Substitution BACKGROUND: Samsung is supplying three different CRT manufacturers with the CMG7377L monitor. Parts differ in the heater, high voltage, and deflection circuits as well as the degaussing coil rating. SOLUTION: The parts that differ from each other are listed in the parts list below. PARTS LIST: See the back of this cover page. Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 10-1 Location No. CRT Hitachi CRT SDD CRT Mitsubishi CRT (TYPE:M41KXH100X06) (CODE : 897-250171AA) FSW-17002A (CODE : BH26-10003A) REF-CF,100K, 5%,1/6W (CODE : 911-16100YA) REF-FUSIBLE, 2.2 (CODE : 2008-000002) TRANS-FOCUS, 100/850T (CODE : BH26-30018A) R-CAR, 2.2K, 1/6W (CODE : 911-142207QJAL) C-MPP, 250V, 274J 916-656270QJAL) SPARK GAP, 1KV (CODE : 04569-001-110) JUMPER WIRE (TYPE:M41KVZ680X72) (TYPE:M41KUN36X01) (CODE : 897-250144CA(UQ) (CODE : 897-250183AA) FSW-17A002 (CODE : 923-460167BA) REF-CF, 180K, 5%, 1/6W (CODE : 911-161607YA) REF-FUSIBLE, 1..8, 5% (CODE : 911-611807LA) TRANS-FOCUS, 100/650T (CODE : 923-480157GA) REF-CF, 3.9K, 5%, 1/6W (CODE : 911-143907YA) CAP-MPP, 250V, 104J (CODE : 916-656100QJAL) DSP-301N (CODE : 04569-002-210) DSP-301N (CODE : 04569-002-210) D-COIL, 8.45MH,9.45 0HM (CODE : 925-460193CA) REF-CF, 18K, 5%, 1/6W (CODE : 911-151807YA) FSW-17002 (CODE : 923-460167BA) REF-CF, 220K, 5%, 1/6W (CODE : 911-162207Y) REF-FUSIBLE, 1.8, 5% (CODE : 911-811807LA) TRANS-FOCUS, 100/600T (CODE : 923-480167HA) REF-CF, 3.9K, 5%, 1/6W (CODE : 911-143907YA) CAP-MPP, 250V, 104J (CODE : 916-656100QJAL) DSP-301N (CODE : 04569-002-210) DSP-301N (CODE : 04569-002-210) D-COIL, 8.45MH,9.45 0HM (CODE : 925-460193CA) REF-CF-C, 27K, 5%, 1/6W (CODE : 911-162707YA) FBT R527 R616 T504 R215 C428 SK501 SK502 D-COIL D-COIL, 102T, 12.6 OHM (CODE : BH27-10006A REF-CF, 18K, 5%, 1/6W (CODE : 911-161807YA) R326 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 10-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: Monitor 95-004 MODEL: CMB5477L SUBJECT: CRT Substitution BACKGROUND: Samsung is manufacturing the CMB5477L with three different manufacturer's CRTs. Each type of CRT has parts that differ in the heater, brightness, and the deflection circuits. SOLUTION: The parts that differ from each other are listed in the parts list below. PARTS LIST: See the back of this cover page. Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 10-1 Locatio
File name MON95-004.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: Monitor 95-004 MODEL: CMB5477L SUBJECT: CRT Substitution BACKGROUND: Samsung is manufacturing the CMB5477L with three different manufacturer's CRTs. Each type of CRT has parts that differ in the heater, brightness, and the deflection circuits. SOLUTION: The parts that differ from each other are listed in the parts list below. PARTS LIST: See the back of this cover page. Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 10-1 Location No. CRT Phillips CRT TYPE : M36EDR320X (CODE : 897-250089AA) R-CAR, 10K, 1/6W (CODE : 911-151007YA) R-CAR, 15K, 1/6W (CODE : 911-151507AA) R-M, OXIDE, 1.5, 3W (CODE : 911-311507LFXA) R-CAR, 100K, 1/6W (CODE : 911-161007YA) JUMPER WIRE Toshiba CRT TYPE : M36KUT23XX01 (CODE : 897-250192AA) R-CAR, 15K, 1/6W (CODE : 911-151507AA) R-CAR, 10K, 1/6W (CODE : 911-151007YA) R-M, OXIDE, 1.2, 3W (CODE : 911-311207JF) R-CAR, 75K, 1/6W (CODE : 911-157507YA) R-CAR, 27K, 1/6W (CODE : 911-152707YA COIL-CHOKE, 100UH (CODE : 925-460192BA) R-M, OXIDE, 2.7, 3W (CODE : 911-312707LF) R-M, OXIDE, 3.9, 3W (CODE : 911-313907LF) R-CAR, 470, 1/2W (CODE : 911-134707FF) C-M, P.P, 1.6KV, 552-J (CODE : 916-944550YJAX) R-M, OXIDE, 180, 2W (CODE : 911-331807JF) NONE SDD CRT TYPE : M36KUK35X02 (CODE : 897-250134AA) R-CAR, 15K, 1/6W (CODE : 911-151507AA) R-CAR, 15K, 1/6W (CODE : 911-151507AA) R-M, OXIDE, 1.2, 3W (CODE : 911-311207JF) R-CAR, 100K, 1/6W (CODE : 911-161007YA) JUMPER WIRE R209 R463 R461 R184 JP25 L403 COIL-CHOKE, 57UH (CODE : 925-460191FA) R-M, OXIDE, 2.7, 3W (CODE : 911-312707LF) R-M, OXIDE, 3.9, 3W (CODE : 911-313907LF) R-CAR, 470, 1/2W (CODE : 911-134707FF) C-M, P.P, 1.6KV, 552-J (CODE : 916-944550YJAX) R-M, OXIDE, 180, 2W (CODE : 911-331807JF) NONE COIL-CHOKE, 100UH (CODE : 925-460192BA) R-M, OXIDE, 1.5, 3W (CODE : 911-311507LFXA) R-M, OXIDE, 1.5, 3W (CODE : 911-311507LFXA) R-CAR, 330, 1/2W (CODE : 911-133307FF) C-M, P.P, 1.6KV, 502-J (CODE : 916-354560YJAX) R-M, OXIDE, 75, 2W (CODE : 911-331807JA) RGP02-12 (CODE : 02169-206-297) R-M.F, 24K, 1/4W (CODE : 911-452405DA) R-M, OXIDE, 1.5, 2W (CODE : 911-311507JF) R-M, OXIDE, 1.5, 2W (CODE : 911-311507JF) H-LIN, COIL, 4.7UH (CODE : BH26-30027A) H-PULSE, TRANS, 1.5MH (CODE : BH26-30023A) C-POLY, 100V, 182-J (CODE : 916-164180LJAH) R-CAR, 4.7K, 1/6W (CODE : 911-144107YA) R630 R631 R307 C461 R472 D428 R414 R-M.F, 22K, 1/4W (CODE : 911-452205DA) R-M, OXIDE, 1.2, 2W (CODE : 911-311207JF) R-M, OXIDE, 1.2, 2W (CODE : 911-311207JF) H-LIN, COIL, 4.9UH (CODE : 923-460191EA) H-PULSE, TRANS, 1.0MH (CODE : 923-460169DA) C-POLY, 100V, 102-J (CODE : 916-164100LJAH) R-CAR, 9.1K, 1/6W (CODE : 911-149107YA) R-M.F, 24K, 1/4W (CODE : 911-452405DA) R-M, OXIDE, 1.5, 2W (CODE : 911-311507JF) R-M, OXIDE, 1.5, 2W (CODE : 911-311507JF) H-LIN, COIL, 4.9UH (CODE : 923-4601
File name MON95-005.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: Monitor 95-005 MODEL: Samtron SC-428PS SUBJECT: Vertical Deflection Circuit Improvement BACKGROUND: The Samtron 14 inch computer monitor SC-428PS has no vertical deflection after power up due to IC301 (TDA4866) and R301 failing. The problem is likely to occur with the serial number range of A9524002821 to A9538025160. Serial numbers after A9538025160 use a different IC301 (TDA8351). These are not interchangable without making various circuit changes to meet the specifications of the new IC301. SOLUTION: The counter measure to keep the original IC301 (TDA4866) from failing is done by improving the grounding on the monitor. Two ground lugs and two additional ground wires have been added. See the attached page for mounting procedures. PARTS LIST: Below are the parts added to Serial Number Range A9524002821 to A9538025160 Location No. None Part No. 3621200274 Description Wireform UL1015-AWG 22 200 mm BK GND Lug 54 X 18 X 30 X 0.35T None 3112400051 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 9-1 Mounting Procedure - Add a ground lug to point A and point D as in the figure shown below. Take the 200mm wires and route them through the holes labeled E and F in the main pcb as in the diagram below. The holes are located next to the IC301 heatsink. Solder the 200mm wires to the heatsink solder connection located nearest to the routed wire hole. The other end of the 200mm wires are to be soldered to the CRT ground wire as shown below. Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 9-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: Monitor 95-006 MODEL: Samtron SC-428PS SUBJECT: Vertical Circuit Modification BACKGROUND: The vertical output IC301 has been changed from a TDA4866 to a TDA8351. The circuit change was made with serial numbers higher than A95025160. The circuit change was made due to the failure of IC301 in some cases during power up. SOLUTION: The circuitry around IC301 was changed to meet the specifications of the TDA8351. PARTS LIST: SN. A9524002821 TO A9538025160 Location No. C306 SN. A9538026160 TO ? Part No. 1218204707 Part No. NONE Description NONE Description C-CERAMIC 47PF, 50V R-CARBON 4.2K, 1/6W R-CARBON 220, 1/4W R-CARBON 1, 1W R-CARBON 1, 1W IC, TDA8351 R310 NONE NONE 1412104229 R303 1413401021 R-CARBON 1K, 1/4W R-CARBON 1, 1/2W R-CARBON 0.5, 1/2W IC, TDA4866 1413402214 R304 1414201R01 1433601R0B R307 141420R508 1433601R0B IC301 2332290235 2332190339 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied
File name MON95-006.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: Monitor 95-006 MODEL: Samtron SC-428PS SUBJECT: Vertical Circuit Modification BACKGROUND: The vertical output IC301 has been changed from a TDA4866 to a TDA8351. The circuit change was made with serial numbers higher than A95025160. The circuit change was made due to the failure of IC301 in some cases during power up. SOLUTION: The circuitry around IC301 was changed to meet the specifications of the TDA8351. PARTS LIST: SN. A9524002821 TO A9538025160 Location No. C306 SN. A9538026160 TO ? Part No. 1218204707 Part No. NONE Description NONE Description C-CERAMIC 47PF, 50V R-CARBON 4.2K, 1/6W R-CARBON 220, 1/4W R-CARBON 1, 1W R-CARBON 1, 1W IC, TDA8351 R310 NONE NONE 1412104229 R303 1413401021 R-CARBON 1K, 1/4W R-CARBON 1, 1/2W R-CARBON 0.5, 1/2W IC, TDA4866 1413402214 R304 1414201R01 1433601R0B R307 141420R508 1433601R0B IC301 2332290235 2332190339 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 11-1 SERVICE BULLETIN PRODUCT: COMPUTER MONITOR BULLETIN: MONITOR 95-007 MODEL: CQB4147 SUBJECT: No Raster BACKGROUND:There is a delay in the 12V/DC operation. Due to the delay the 166V/DC line operates first when power is first applied to the monitor. This will affect the horizontal circuit and cause a surge, which in turn will cause Q403 and Q408 to short. SOLUTION: Insert a IN4937 diode into location D300 and substitute R401 (33 ohm, 1/2W) with a 220 uH coil. PARTS LIST: Original Parts Location R401 D300 Parts Code Description New Parts Parts Code Description 911-123307FF R-Carbon, 33, 1/2w None None 925-001001AN Coil, 220 uH 893-314937AC Diode, IN4937 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 12-1 SERVICE BULLETIN PRODUCT: COMPUTER MONITOR BULLETIN: MONITOR 95-008 MODEL: SAMTRON SC-428PT/L SUBJECT: No Raster BACKGROUND:There is a delay in the 12V/DC operation. Due to the delay the 166V/DC line operates first when power is first applied to the monitor. This will affect the horizontal circuit and cause a surge, which in turn will cause Q403 and Q408 to short. SOLUTION: Insert a IN4937 diode into location D300 and substitute R401 (33 ohm, 1/2W) with a 220 uH coil. PARTS LIST: Original Parts Location R401 D300 Parts Code Description New Parts Parts Code Description 911-123307FF R-Carbon, 33, 1/2w None None 925-001001AN Coil, 220 uH 893-314937AC Diode, IN4937 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 12-1 SERVICE BULLETIN PRODUCT: Compute
File name MON95-007.pdf

SERVICE BULLETIN PRODUCT: COMPUTER MONITOR BULLETIN: MONITOR 95-007 MODEL: CQB4147 SUBJECT: No Raster BACKGROUND:There is a delay in the 12V/DC operation. Due to the delay the 166V/DC line operates first when power is first applied to the monitor. This will affect the horizontal circuit and cause a surge, which in turn will cause Q403 and Q408 to short. SOLUTION: Insert a IN4937 diode into location D300 and substitute R401 (33 ohm, 1/2W) with a 220 uH coil. PARTS LIST: Original Parts Location R401 D300 Parts Code Description New Parts Parts Code Description 911-123307FF R-Carbon, 33, 1/2w None None 925-001001AN Coil, 220 uH 893-314937AC Diode, IN4937 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 12-1 SERVICE BULLETIN PRODUCT: COMPUTER MONITOR BULLETIN: MONITOR 95-008 MODEL: SAMTRON SC-428PT/L SUBJECT: No Raster BACKGROUND:There is a delay in the 12V/DC operation. Due to the delay the 166V/DC line operates first when power is first applied to the monitor. This will affect the horizontal circuit and cause a surge, which in turn will cause Q403 and Q408 to short. SOLUTION: Insert a IN4937 diode into location D300 and substitute R401 (33 ohm, 1/2W) with a 220 uH coil. PARTS LIST: Original Parts Location R401 D300 Parts Code Description New Parts Parts Code Description 911-123307FF R-Carbon, 33, 1/2w None None 925-001001AN Coil, 220 uH 893-314937AC Diode, IN4937 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 12-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-001 MODEL: CQB4147 SUBJECT: Reduce Q404 Failure Rate Causing No Raster BACKGROUND: Q404 fails when the monitor changes from the DPMS Suspend mode back to Normal operation. Q415 is designed, in the circuit, to cut off horizontal drive to the base of Q404. This is achieved by turning Q415 on in the Suspend mode. In normal operation, Q415 is turned off. There is a delay in turning Q415 off by approximately 15 ms. This will cause an abnormal pulse at the base of Q404, causing damage to the transistor. SOLUTION: The base current limiting resistance to Q415 has been changed by decreasing the values of R200 and R461. PARTS LIST: ORIGINAL Location No. R200 R461 Part No. 2001-000056 2001-000056 Description R-CF 4.7K, 1/6W R-CF 4.7K, 1/6W Part No. 2001-000043 2001-000029 NEW Description R-CF 1K, 1/6W R-CF 100 OHM, 1/6W Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-002 MODEL: CMH7379L S
File name MON95-008.pdf

SERVICE BULLETIN PRODUCT: COMPUTER MONITOR BULLETIN: MONITOR 95-008 MODEL: SAMTRON SC-428PT/L SUBJECT: No Raster BACKGROUND:There is a delay in the 12V/DC operation. Due to the delay the 166V/DC line operates first when power is first applied to the monitor. This will affect the horizontal circuit and cause a surge, which in turn will cause Q403 and Q408 to short. SOLUTION: Insert a IN4937 diode into location D300 and substitute R401 (33 ohm, 1/2W) with a 220 uH coil. PARTS LIST: Original Parts Location R401 D300 Parts Code Description New Parts Parts Code Description 911-123307FF R-Carbon, 33, 1/2w None None 925-001001AN Coil, 220 uH 893-314937AC Diode, IN4937 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 12-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-001 MODEL: CQB4147 SUBJECT: Reduce Q404 Failure Rate Causing No Raster BACKGROUND: Q404 fails when the monitor changes from the DPMS Suspend mode back to Normal operation. Q415 is designed, in the circuit, to cut off horizontal drive to the base of Q404. This is achieved by turning Q415 on in the Suspend mode. In normal operation, Q415 is turned off. There is a delay in turning Q415 off by approximately 15 ms. This will cause an abnormal pulse at the base of Q404, causing damage to the transistor. SOLUTION: The base current limiting resistance to Q415 has been changed by decreasing the values of R200 and R461. PARTS LIST: ORIGINAL Location No. R200 R461 Part No. 2001-000056 2001-000056 Description R-CF 4.7K, 1/6W R-CF 4.7K, 1/6W Part No. 2001-000043 2001-000029 NEW Description R-CF 1K, 1/6W R-CF 100 OHM, 1/6W Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-002 MODEL: CMH7379L SUBJECT: To prevent whistling sound from occurring. BACKGROUND: A whistling sound is created from harmonic noise generated between T402, L402, and the main PCB near the Flyback Transformer. SOLUTION: Add a piece of rubber to insulate the main PCB solder side from the bottom metal shield. See Illustration below showing the section of the PCB where the rubber will be located. PARTS LIST: Part No. BH61-30303A Description RUBBER Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-003 MODEL: CQB4147 SUBJECT: Improve the Horizontal Output Transistor Quality BACKGROUND: The horizontal output for the CQB4147 has been changed as of May 1, 1997. The BU2508DF,
File name MON97-001.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-001 MODEL: CQB4147 SUBJECT: Reduce Q404 Failure Rate Causing No Raster BACKGROUND: Q404 fails when the monitor changes from the DPMS Suspend mode back to Normal operation. Q415 is designed, in the circuit, to cut off horizontal drive to the base of Q404. This is achieved by turning Q415 on in the Suspend mode. In normal operation, Q415 is turned off. There is a delay in turning Q415 off by approximately 15 ms. This will cause an abnormal pulse at the base of Q404, causing damage to the transistor. SOLUTION: The base current limiting resistance to Q415 has been changed by decreasing the values of R200 and R461. PARTS LIST: ORIGINAL Location No. R200 R461 Part No. 2001-000056 2001-000056 Description R-CF 4.7K, 1/6W R-CF 4.7K, 1/6W Part No. 2001-000043 2001-000029 NEW Description R-CF 1K, 1/6W R-CF 100 OHM, 1/6W Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-002 MODEL: CMH7379L SUBJECT: To prevent whistling sound from occurring. BACKGROUND: A whistling sound is created from harmonic noise generated between T402, L402, and the main PCB near the Flyback Transformer. SOLUTION: Add a piece of rubber to insulate the main PCB solder side from the bottom metal shield. See Illustration below showing the section of the PCB where the rubber will be located. PARTS LIST: Part No. BH61-30303A Description RUBBER Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-003 MODEL: CQB4147 SUBJECT: Improve the Horizontal Output Transistor Quality BACKGROUND: The horizontal output for the CQB4147 has been changed as of May 1, 1997. The BU2508DF, which had been used prior to this date, has been failing intermittently due to a current surge from the 166 volt B+ line. The current surge is caused mainly from the DPMS off mode recovery. SOLUTION: The circuit has been improved by using a 2SC5149, which has a higher hfe than the originally used BU2508DF. PARTS LIST: ORIGINAL Location No. Q403 Part No. 0502-000007 Description BU2508DF Part No. 0502-000005 NEW Description 2SC5149 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-004 MODEL: CFX1577L SUBJECT: Vertical Positioning Shifted Off Center BACKGROUND: Q302 and R327 fail in the vertical positioning circuit. The failure is caused by a current surge d
File name MON97-002.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-002 MODEL: CMH7379L SUBJECT: To prevent whistling sound from occurring. BACKGROUND: A whistling sound is created from harmonic noise generated between T402, L402, and the main PCB near the Flyback Transformer. SOLUTION: Add a piece of rubber to insulate the main PCB solder side from the bottom metal shield. See Illustration below showing the section of the PCB where the rubber will be located. PARTS LIST: Part No. BH61-30303A Description RUBBER Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-003 MODEL: CQB4147 SUBJECT: Improve the Horizontal Output Transistor Quality BACKGROUND: The horizontal output for the CQB4147 has been changed as of May 1, 1997. The BU2508DF, which had been used prior to this date, has been failing intermittently due to a current surge from the 166 volt B+ line. The current surge is caused mainly from the DPMS off mode recovery. SOLUTION: The circuit has been improved by using a 2SC5149, which has a higher hfe than the originally used BU2508DF. PARTS LIST: ORIGINAL Location No. Q403 Part No. 0502-000007 Description BU2508DF Part No. 0502-000005 NEW Description 2SC5149 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-004 MODEL: CFX1577L SUBJECT: Vertical Positioning Shifted Off Center BACKGROUND: Q302 and R327 fail in the vertical positioning circuit. The failure is caused by a current surge during power up and from the monitor recovering from an extended period in the DPMS Suspend mode. SOLUTION: Replace Q302, Q303, and R327 with different ratings. Production went under these changes as of February 1, 1997. Observe the pin configuration when replacing Q302. PARTS LIST: ORIGINAL Location No. Q302 Q303 R327 Part No. 0501-000586 0501-000008 2001-000526 Description KSC945, 150mA KSC733C, 150mA R-CARBON, 1/6 W Part No. 0502-000006 0501-000294 2003-000590 NEW Description KSC1507, 200mA KSA708, 700mA MO, 2W, 22 ohm Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-005 MODEL: CMH7379L SUBJECT: Q407 Failure Causing No Raster or Small Horizontal Size BACKGROUND: Q407 fails due to a transient pulse and current when mode switching from DOS to Windows. This occurs with a Matrox video card installed in the computer. SOLUTION: Add a sub-PCB assembly as in figur
File name MON97-003.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-003 MODEL: CQB4147 SUBJECT: Improve the Horizontal Output Transistor Quality BACKGROUND: The horizontal output for the CQB4147 has been changed as of May 1, 1997. The BU2508DF, which had been used prior to this date, has been failing intermittently due to a current surge from the 166 volt B+ line. The current surge is caused mainly from the DPMS off mode recovery. SOLUTION: The circuit has been improved by using a 2SC5149, which has a higher hfe than the originally used BU2508DF. PARTS LIST: ORIGINAL Location No. Q403 Part No. 0502-000007 Description BU2508DF Part No. 0502-000005 NEW Description 2SC5149 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 5-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-004 MODEL: CFX1577L SUBJECT: Vertical Positioning Shifted Off Center BACKGROUND: Q302 and R327 fail in the vertical positioning circuit. The failure is caused by a current surge during power up and from the monitor recovering from an extended period in the DPMS Suspend mode. SOLUTION: Replace Q302, Q303, and R327 with different ratings. Production went under these changes as of February 1, 1997. Observe the pin configuration when replacing Q302. PARTS LIST: ORIGINAL Location No. Q302 Q303 R327 Part No. 0501-000586 0501-000008 2001-000526 Description KSC945, 150mA KSC733C, 150mA R-CARBON, 1/6 W Part No. 0502-000006 0501-000294 2003-000590 NEW Description KSC1507, 200mA KSA708, 700mA MO, 2W, 22 ohm Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-005 MODEL: CMH7379L SUBJECT: Q407 Failure Causing No Raster or Small Horizontal Size BACKGROUND: Q407 fails due to a transient pulse and current when mode switching from DOS to Windows. This occurs with a Matrox video card installed in the computer. SOLUTION: Add a sub-PCB assembly as in figures 1 and 2 and a snubbing circuit for the horizontal output as in figure 3. PARTS LIST: ORIGINAL Location No. NA NA NA NA NA NA NEW Description NA NA NA NA NA NA Part No. NA NA NA NA NA NA Part No. BH92-50106J BH39-40355S 6003-000129 0401-000005 0402-000012 2003-000009 Description SUB-PCB ASSEMBLY 4 PIN CBF-HARNESS TAPTITE SCREW 1N4148 DIODE UF4007 DIODE 220 OMHS, 1 WATT Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 Figure 1 Top View of the Main Board Figure 2 Bottom View of the Main Board Figure 3 Snubbing Circuits SERVICE BULLETIN PRODUCT:
File name MON97-004.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-004 MODEL: CFX1577L SUBJECT: Vertical Positioning Shifted Off Center BACKGROUND: Q302 and R327 fail in the vertical positioning circuit. The failure is caused by a current surge during power up and from the monitor recovering from an extended period in the DPMS Suspend mode. SOLUTION: Replace Q302, Q303, and R327 with different ratings. Production went under these changes as of February 1, 1997. Observe the pin configuration when replacing Q302. PARTS LIST: ORIGINAL Location No. Q302 Q303 R327 Part No. 0501-000586 0501-000008 2001-000526 Description KSC945, 150mA KSC733C, 150mA R-CARBON, 1/6 W Part No. 0502-000006 0501-000294 2003-000590 NEW Description KSC1507, 200mA KSA708, 700mA MO, 2W, 22 ohm Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-005 MODEL: CMH7379L SUBJECT: Q407 Failure Causing No Raster or Small Horizontal Size BACKGROUND: Q407 fails due to a transient pulse and current when mode switching from DOS to Windows. This occurs with a Matrox video card installed in the computer. SOLUTION: Add a sub-PCB assembly as in figures 1 and 2 and a snubbing circuit for the horizontal output as in figure 3. PARTS LIST: ORIGINAL Location No. NA NA NA NA NA NA NEW Description NA NA NA NA NA NA Part No. NA NA NA NA NA NA Part No. BH92-50106J BH39-40355S 6003-000129 0401-000005 0402-000012 2003-000009 Description SUB-PCB ASSEMBLY 4 PIN CBF-HARNESS TAPTITE SCREW 1N4148 DIODE UF4007 DIODE 220 OMHS, 1 WATT Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 Figure 1 Top View of the Main Board Figure 2 Bottom View of the Main Board Figure 3 Snubbing Circuits SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-007 MODEL: CMB5477L SUBJECT: Flyback Transformer Revisions BACKGROUND: Samsung instituted new revision flyback transformers as of October 24, 1996. The new flyback transformer will prevent intermittent no raster conditions. The revised flyback transformers that have been applied to the latest production runs will have resistance values changed in the x-ray protection and the high voltage adjustment circuits. SOLUTION: When replacing a flyback transformer refer to the parts list below. The resistance values should be changed accordingly. If the resistance values are different from the flyback transformers listed below, intermittent no raster or shutdown conditions will exist. Refer back to the original parts list and schematic located in the service manual for any flyback transformer without a revision number or label on it. PARTS LIST: ORIGINAL Location No
File name MON97-005.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-005 MODEL: CMH7379L SUBJECT: Q407 Failure Causing No Raster or Small Horizontal Size BACKGROUND: Q407 fails due to a transient pulse and current when mode switching from DOS to Windows. This occurs with a Matrox video card installed in the computer. SOLUTION: Add a sub-PCB assembly as in figures 1 and 2 and a snubbing circuit for the horizontal output as in figure 3. PARTS LIST: ORIGINAL Location No. NA NA NA NA NA NA NEW Description NA NA NA NA NA NA Part No. NA NA NA NA NA NA Part No. BH92-50106J BH39-40355S 6003-000129 0401-000005 0402-000012 2003-000009 Description SUB-PCB ASSEMBLY 4 PIN CBF-HARNESS TAPTITE SCREW 1N4148 DIODE UF4007 DIODE 220 OMHS, 1 WATT Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 Figure 1 Top View of the Main Board Figure 2 Bottom View of the Main Board Figure 3 Snubbing Circuits SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-007 MODEL: CMB5477L SUBJECT: Flyback Transformer Revisions BACKGROUND: Samsung instituted new revision flyback transformers as of October 24, 1996. The new flyback transformer will prevent intermittent no raster conditions. The revised flyback transformers that have been applied to the latest production runs will have resistance values changed in the x-ray protection and the high voltage adjustment circuits. SOLUTION: When replacing a flyback transformer refer to the parts list below. The resistance values should be changed accordingly. If the resistance values are different from the flyback transformers listed below, intermittent no raster or shutdown conditions will exist. Refer back to the original parts list and schematic located in the service manual for any flyback transformer without a revision number or label on it. PARTS LIST: ORIGINAL Location No. T402 Part No. BH26-10303V Description REV.04 FSA15A003 SAMSUNG 1/4W, 86k ohm 1/4W, 3.9k ohm 1/4W, 4.3k ohm Part No. BH26-10303V NEW Description REV.05 & REV.06 FSA-15A003 SAMSUNG 1/4W, 91k ohm 1/4W, 4.7k ohm 1/4W, 3.3k ohm R516 R411 R412 2004-001319 2001-000054 2001-000722 2004-001349 2004-000899 2004-000698 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-008 MODEL: CFG9637 SUBJECT: Video Pre-amp (LM1205) Failure Causing No OSD BACKGROUND: The OSD blanking input stage of IC101 (LM1205) shorts to the Vcc input stage due to CRT discharging and surge current. SOLUTION: Add a 7.5V zenor diode between pin 13 of IC101 and ground (cathode to pin 13 and anode to ground). Replace jumper wire JP104 with a 100 ohm ½ watt resistor. The resistor will a
File name MON97-007.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-007 MODEL: CMB5477L SUBJECT: Flyback Transformer Revisions BACKGROUND: Samsung instituted new revision flyback transformers as of October 24, 1996. The new flyback transformer will prevent intermittent no raster conditions. The revised flyback transformers that have been applied to the latest production runs will have resistance values changed in the x-ray protection and the high voltage adjustment circuits. SOLUTION: When replacing a flyback transformer refer to the parts list below. The resistance values should be changed accordingly. If the resistance values are different from the flyback transformers listed below, intermittent no raster or shutdown conditions will exist. Refer back to the original parts list and schematic located in the service manual for any flyback transformer without a revision number or label on it. PARTS LIST: ORIGINAL Location No. T402 Part No. BH26-10303V Description REV.04 FSA15A003 SAMSUNG 1/4W, 86k ohm 1/4W, 3.9k ohm 1/4W, 4.3k ohm Part No. BH26-10303V NEW Description REV.05 & REV.06 FSA-15A003 SAMSUNG 1/4W, 91k ohm 1/4W, 4.7k ohm 1/4W, 3.3k ohm R516 R411 R412 2004-001319 2001-000054 2001-000722 2004-001349 2004-000899 2004-000698 Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-008 MODEL: CFG9637 SUBJECT: Video Pre-amp (LM1205) Failure Causing No OSD BACKGROUND: The OSD blanking input stage of IC101 (LM1205) shorts to the Vcc input stage due to CRT discharging and surge current. SOLUTION: Add a 7.5V zenor diode between pin 13 of IC101 and ground (cathode to pin 13 and anode to ground). Replace jumper wire JP104 with a 100 ohm ½ watt resistor. The resistor will act as a delay and improve the R,G,B surge absorbers discharge effect. Replace the 300V spark gaps at each of the Red, Green, and Blue cathodes of the CRT with 200V surge absorbers. PARTS LIST: ORIGINAL Location No. NA JP104 SGR1 SGB1 SGG1 NEW Description Part No. 0403-000366 2001-000028 4715-000102 4715-000102 4715-000102 Part No. NA NA 4715-000106 4715-000106 4715-000106 Description ZD 7.5V R-CF(S), 100 ohm, 1/2W 200V, Surge Absorber 200V, Surge Absorber 200V, Surge Absorber NA JP104 300V, Surge Absorber 300V, Surge Absorber 300V, Surge Absorber Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-009 MODEL: CMB5477L SUBJECT: Video Pre-amp IC101 (LM1207) Failure BACKGROUND: IC101 becomes damaged from arcing within the CRT during electronic discharge. SOLUTION: Add a 300V spark gap in between the G1 grid of the CRT
File name MON97-008.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-008 MODEL: CFG9637 SUBJECT: Video Pre-amp (LM1205) Failure Causing No OSD BACKGROUND: The OSD blanking input stage of IC101 (LM1205) shorts to the Vcc input stage due to CRT discharging and surge current. SOLUTION: Add a 7.5V zenor diode between pin 13 of IC101 and ground (cathode to pin 13 and anode to ground). Replace jumper wire JP104 with a 100 ohm ½ watt resistor. The resistor will act as a delay and improve the R,G,B surge absorbers discharge effect. Replace the 300V spark gaps at each of the Red, Green, and Blue cathodes of the CRT with 200V surge absorbers. PARTS LIST: ORIGINAL Location No. NA JP104 SGR1 SGB1 SGG1 NEW Description Part No. 0403-000366 2001-000028 4715-000102 4715-000102 4715-000102 Part No. NA NA 4715-000106 4715-000106 4715-000106 Description ZD 7.5V R-CF(S), 100 ohm, 1/2W 200V, Surge Absorber 200V, Surge Absorber 200V, Surge Absorber NA JP104 300V, Surge Absorber 300V, Surge Absorber 300V, Surge Absorber Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-009 MODEL: CMB5477L SUBJECT: Video Pre-amp IC101 (LM1207) Failure BACKGROUND: IC101 becomes damaged from arcing within the CRT during electronic discharge. SOLUTION: Add a 300V spark gap in between the G1 grid of the CRT and ground. This will aid in reducing the discharge effect from the CRT. PARTS LIST: ORIGINAL Location No. NA NEW Description NA Part No. NA Part No. 4715-000106 Description 300V, Surge Absorber Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-010 MODEL: CQA4147, CQB4147 SUBJECT: No Raster BACKGROUND: D618, which is the rectifier diode for the 166V line, burns due to a reverse peak voltage that occurs when power is turned off. SOLUTION: A snubbing capacitor must be added in parallel with D618 in order to prevent this from occurring. This capacitor should be added to all CQB and CQA chassis as a preventative maintenance. PARTS LIST: ORIGINAL Location No. C643 NEW Description NA Part No. NA Part No. 2201-000012 Description C-CERAMIC DISK, 220pf, 10%, 1KV Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1
File name MON97-009.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-009 MODEL: CMB5477L SUBJECT: Video Pre-amp IC101 (LM1207) Failure BACKGROUND: IC101 becomes damaged from arcing within the CRT during electronic discharge. SOLUTION: Add a 300V spark gap in between the G1 grid of the CRT and ground. This will aid in reducing the discharge effect from the CRT. PARTS LIST: ORIGINAL Location No. NA NEW Description NA Part No. NA Part No. 4715-000106 Description 300V, Surge Absorber Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1 SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-010 MODEL: CQA4147, CQB4147 SUBJECT: No Raster BACKGROUND: D618, which is the rectifier diode for the 166V line, burns due to a reverse peak voltage that occurs when power is turned off. SOLUTION: A snubbing capacitor must be added in parallel with D618 in order to prevent this from occurring. This capacitor should be added to all CQB and CQA chassis as a preventative maintenance. PARTS LIST: ORIGINAL Location No. C643 NEW Description NA Part No. NA Part No. 2201-000012 Description C-CERAMIC DISK, 220pf, 10%, 1KV Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1
File name MON97-010.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 97-010 MODEL: CQA4147, CQB4147 SUBJECT: No Raster BACKGROUND: D618, which is the rectifier diode for the 166V line, burns due to a reverse peak voltage that occurs when power is turned off. SOLUTION: A snubbing capacitor must be added in parallel with D618 in order to prevent this from occurring. This capacitor should be added to all CQB and CQA chassis as a preventative maintenance. PARTS LIST: ORIGINAL Location No. C643 NEW Description NA Part No. NA Part No. 2201-000012 Description C-CERAMIC DISK, 220pf, 10%, 1KV Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 8-1
File name MON98-001.pdf

SERVICE BULLETIN PRODUCT: COMPUTER MONITOR BULLETIN: MON98-001 MODEL: CGK5507M SUBJECT: Microprocessor Manufacturing Change BACKGROUND: The microprocessor has been changed from an OTP type to a Masking type. The change was made to make production easier. SOLUTION: The original OTP type (68HC705BD7) was made by Motorola and had to be programmed by Samsung. The new Masking type (LSC442808B) is made by Motorola and programmed by the vendor. Both microprocessors are interchangeable pin for pin. The application date for the new microprocessor was applied on May 30, 1997. PARTS LIST: ORIGINAL Location No. IC201 NEW Description 68HC705BD7 Part No. 0902-001008 Part No. BH09-10303K Description LSC442808B Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 1-1
File name MON98-002.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 98-002 MODEL: F-Series, M-Series, G-Series SUBJECT: Microprocessor Alignment Jigs BACKGROUND: Many Samsung monitors use proprietary alignment jigs and software in order to align geometry and color. This bulletin will describe the differences between the alignment jigs. SOLUTION: There currently are three alignment kits that are available to perform factory preset adjustments to F, M, and G Series color monitors. Listed below are the alignment kits and accessories for each model. MODEL # CSQ4387L CSR5987L CSN5987L CST7687L CFA7689L CFG9637L CFX1577L CMA5377L CMB5477L CMG7377L CMG7387L CMH7379L CGK5507M CGB5607L CGC5607T CGE7607M CGM7609L CGH7609T CGX1609T SERIES F F F F F F F M M M M M G G G G G G G ALIGNMENT JIG KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-MC-250 KIT-SOFTJIG KIT-SOFTJIG KIT-SOFTJIG KIT-SOFTJIG KIT-SOFTJIG KIT-SOFTJIG KIT-1000p SOFTJIG KIT ACCESORIES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 AC CORD, 1 MC-250, 3 DATA CABLES 1 DC ADAPTER, 1 SIGNAL CABLE, 1 PARALLEL DATA CABLE, 1 INTERFACE BOARD, 1 SOFTWARE DISKETTE 1 DC ADAPTER, 1 SIGNAL CABLE, 1 PARALLEL DATA CABLE, 1 INTERFACE BOARD, 1 SOFTWARE DISKETTE 1 DC ADAPTER, 1 SIGNAL CABLE, 1 PARALLEL DATA CABLE, 1 INTERFACE BOARD, 1 SOFTWARE DISKETTE 1 DC ADAPTER, 1 SIGNAL CABLE, 1 PARALLEL DATA CABLE, 1 INTERFACE BOARD, 1 SOFTWARE DISKETTE 1 DC ADAPTER, 1 SIGNAL CABLE, 1 PARALLEL DATA CABLE, 1 INTERFACE BOARD, 1 SOFTWARE DISKETTE 1 DC ADAPTER, 1 SIGNAL CABLE, 1 PARALLEL DATA CABLE, 1 INTERFACE BOARD, 1 SOFTWARE DISKETTE 1 NINE TO THREE PIN SERIAL DATA CABLE, 1 SOFTWARE DISKETTE F-Series/M-Series Color Monitors The KIT MC-250 aligns geometric on F Series color monitors. The MC-250 aligns color as well as geometric on M Series color monitors. The MC-250 utilizes three different data interface cables for the models that it supports. 1) The cable shown below is dedicated for the 17", 20", and 21" F and M Series color monitors. 2) The cable shown below is dedicated for the 14" and 15" F-Series color monitors. In order to make a distinction, the length of the cable is 38". The numbers 1, 2, and 3 shown in the illustration below indicate the corresponding connecting pins. 3) The cable shown below is dedicated for the 15" M-Series color monitors. In order to make a distinction, the length of the cable is 28". The numbers 1, 2, and 3 shown in the illustration below indicate the corresponding connecting pins. Error Codes - If an ERROR 1 code is displayed in the MC-250 LCD readout after attempting to align or save
File name MON98-003.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 98-003 MODEL: CMA5377L SUBJECT: CRT Substitution BACKGROUND: Samsung has manufactured the CMA5377L with three different manufacturers' CRTs. Each type of CRT has parts that differ in the power supply, brightness, and the deflection circuits. SOLUTION: The parts that differ from each other are listed in the parts list . PARTS LIST: See the back of this page. Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 2-1 Location No. C461 C462 C463 L407 L403 R302 R463 R438 R465 R609 R630 R210 R462 R308 R179 R474 C313 LABEL Phillips CRT C-PPF 1.6KV 602 CODE : 2303-000281 C-MPP 250V 254 CODE : 2306-000169 C-MPP 250V 254 CODE : 2303-000169 18.5T CODE : BH27-20310R 150uH CODE : BH27-20310H R-CF 1/6W 18K CODE : 2001-000108 R-CF 1/6W 33K CODE : 2001-000074 R-MF 1/4W 5.6K CODE : 2004-001022 R-CF 1/6W 150K CODE : 2001-000089 R-WW 2W 0.18 CODE : 2005-000161 R-M OXIDE 2W 2.7 CODE : 2003-000567 R-CF 1/6W 91K CODE : 2001-001030 R-CF 1/6W 18K CODE : 2001-000108 R-CF 1/4W 1K CODE : 2001-000042 R-CF 1/6W 33K CODE : 2001-000074 R-CF 1/6W 22K CODE : 2001-000072 C-CERAMIC 102K 50V CODE : 2201-000017 CODE : BH68-20003A Toshiba CRT C-PPF 1.6KV 632 CODE : 2309-000117 C-MPP 250V 254 CODE : 2306-000169 C-MPP 250V 254 CODE : 2303-000169 20.5T CODE : BH27-20310P 150uH CODE : BH27-20310H R-CF 1/6W 47 CODE : 2001-000024 R-CF 1/6W 18K CODE : 2001-000108 R-MF 1/4W 6.19K CODE : 2004-001123 R-CF 1/6W 120K CODE : 2001-000088 R-WW 2W 0.22 CODE : 2005-000165 R-M OXIDE 2W 2.7 CODE : 2003-000567 R-CF 1/6W 20K CODE : 2001-000496 R-CF 1/6W 15K CODE : 2001-000367 NONE R-CF 1/6W 56K CODE : 2001-000079 R-CF 1/6W 10K CODE : 2001-000067 C-AL 3.3uF 50V CODE : 2401-000026 CODE : BH26-20003B Samsung CRT C-PPF 1.6KV 602 CODE : 2303-000281 C-MPP 250V 274 CODE : 2306-000171 C-MPP 250V 274 CODE : 2306-000171 21.5T CODE : BH27-20016A 120uH CODE : BH27-20008A R-CF 1/6W 47 CODE : 2001-000024 R-CF 1/6W 27K CODE : 2001-000562 R-MF 1/4W 6.19K CODE : 2004-001123 R-CF 1/6W 120K CODE : 2001-000088 R-WW 2W 0.22 CODE : 2005-000165 JUMPER CODE : BH39-40026A R-CF 1/6W 33K CODE : 2001-000074 R-CF 1/6W 15K CODE : 2001-000367 R-CF 1/4W 1K CODE : 2001-000042 R-CF 1/6W 33K CODE : 2001-000074 R-CF 1/6W 22K CODE : 2001-000072 C-AL 3.3uF 50V CODE : 2401-000026 CODE : BH68-20003G
File name MON98-004.pdf

SERVICE BULLETIN PRODUCT: Computer Monitor BULLETIN: MON 98-004 MODEL: CKA5227L SUBJECT: Samtron 5Ei and Samsung SyncMaster 5e BACKGROUND: Samtron has manufactured a CKA5227L with a 1 year warranty. Samsung has manufactured a CKA5227L with a 3 year warranty. These models should not be confused with each other due to the different warranty periods. SOLUTION: The monitors are distinguishable in several ways. Front Cover Manufacturer : Model Name : Samtron 5Ei Samsung SyncMaster 5e Rear Label Manufacturer : Samtron Model Name : 5Ei Serial Number : H4XJ?????? Samsung SyncMaster 5e HCCH?????? H1EH?????? Serial Number Definition - The 2 nd digit will state the factory location. For example, Samtron designates the number 4 as their location. Samsung designates the letter C or 1 as their factory location. Disclaimer: This information is provided "as is" without warranty of any kind either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. REV 6-1



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