Samsung CA17K Series Service Manual
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Samsung CA17K Series Service Manual

Samsung CA17K Series Service Manual

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SERVICE

COLOR MONITOR

COLOR MONITOR
CA17K*
CA17J*
Manual
CONTENTS
CONFIDENTIAL

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Summary of Contents for Samsung CA17K Series

  • Page 1: Table Of Contents

    CONFIDENTIAL COLOR MONITOR CA17K* CA17J* SERVICE Manual COLOR MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Alignment & Adjustments 5. Troubleshooting 6. Exploded View & Parts List 7. Electrical Parts List 8. Block Diagram 9. Wiring Diagram 10.

  • Page 2: Precautions

    CONFIDENTIAL 1 Precautio 1-1 Safety Precautions WARNINGS Leakage Current Hot Check (Figure 1-1): For continued safety, do not attempt to modify the WARNING: Do not use an isolation transformer during circuit board. this test. Disconnect the AC power before servicing. Use a leakage current tester or a metering system that complies with American National Standards When the chassis is operating, semiconductor...

  • Page 3: Product Specifications

    CONFIDENTIAL 2 Product Specifications 2-1 Specifications Description Item CA17K* CA17J* Picture Tube 17-Inch (43 cm): 16-inch (40.6 cm) viewable, Flat-face, 90˚ Deflection, 0.20 mm (Horizontal) Dot pitch, Silica coated with anti-electrostatic properties (TCO: Multilayer coating), Medium-short persistence phosphor Scanning Frequency Horizontal : 30 kHz ~ 70 kHz 30 kHz ~ 85 kHz Vertical...

  • Page 4: Disassembly And Reassembly

    CONFIDENTIAL 3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the CA17K*/CA17J* monitor. WARNING: This monitor contains electrostatically sensitive devices. Use with caution when handling these components. 3-1 Disassembly Cautions:1. Disconnect the monitor from the power source before disassembly. 2.

  • Page 5: Alignment And Adjustments

    CONFIDENTIAL 4 Alignment and Adjustments This section of the service manual explains how to make permanent adjustments to the monitor. Directions are given for adjustments using the monitor Interface Board Ver. 2.0 and software (Softjig). 4-1 Adjustment Conditions Caution: Changes made without the Softjig are saved only to the user mode settings. As such, the settings are not permanently stored and may be inadvertently deleted by the user.

  • Page 6: Troubleshooting

    CONFIDENTIAL 5 Troubleshooting 5-1 Parts Level Troubleshooting Notes: Check the following circuits. • No raster appears: Power circuit, Horizontal output circuit. • High voltage develops but no raster appears: Video output circuits. • High voltage does not develop: Horizontal output circuits. 5-1-1 No Power Supply WAVEFORMS Check and replace D601 and FH1...

  • Page 7: Exploded View & Parts List

    CONFIDENTIAL 6 Exploded View and Parts List CA17K*/CA17J*...

  • Page 8: Electrical Parts List

    CONFIDENTIAL 7 Electrical Parts List 7-1 Main PCB Parts Loc. No. Code No. Description Specification Remarks BH94-00704B ASSY PCB MAIN CA17JS C409 2306-000147 C-FILM,MPPF 1uF,5%,250V,BK,26x24x15,22.5mm C430 2306-000249 C-FILM,MPPF 680nF,5%,250V,TP,26x20.5x12,20 C506 2201-000154 C-CERAMIC,DISC 10nF,+80-20%,2kV,Y5P,TP,20x5,10 C601 2301-001195 C-FILM,MPPF 150nF,10%,275VAC,BK,26x16.5x7, C602 2301-001195 C-FILM,MPPF 150nF,10%,275VAC,BK,26x16.5x7, C608 2401-003391...

  • Page 9: Block Diagram

    CONFIDENTIAL 8 Block Diagrams CA17K*/CA17J*...

  • Page 10: Wiring Diagram

    CONFIDENTIAL 9 Wiring Diagram MAIN PCB CRT SOCKET PCB CRT SOCKET FOCUS1 (WHT) FOCUS2 (RED) 2 x 3p DY 2 x 3p DY CN501 FOCUS (WHT) YELLOW YELLOW V– V– CN403 BROWN BROWN H– H– BLUE BLUE CN201 CN102 80 V 80 V 6.3 V 6.3 V...

  • Page 11: Schematic Diagrams

    CONFIDENTIAL 10 Schematic Diagrams 10-1 Main Part Schematic Diagram 210V CN202 13V_1 COIL_5V R557 DELETE slcon7p R554 R553 240K R551 330K 1/2W HS_IN CN304 240K 1/2W slcon3p C551 1/4W R556 10uF VS_IN IC603-3 3.9K LM324N Q301 1/6W DDCDATA Q551 2N3904 4 VCC KSP44 DDCCLK...
  • Page 12 CONFIDENTIAL Copyright Trademarks © 2002 by Samsung Electronics Co., Ltd. Samsung is the registered trademark of Samsung Electronics Co., Ltd. All rights reserved. CA17K*/CA17J* and MacMaster Cable Adapter This manual may not, in whole or in part, be are trademarks of Samsung Electronics Co., Ltd.
  • Page 13 CONFIDENTIAL 10 Schematic Diagrams 20.0 V (Q403, Collector) 100 V (IC601, #1) 100 V (IC601, #1) 2.00 V (IC401, #6) 2.00V (IC401, #8) 200 V (Q404, Collector) CH1 P-P = 100 V CH1 RMS = 350.2 V CH1 P-P = 100 V CH1 RMS = 325.8 V CH1 P-P = 2.00V CH1 RMS = 5.868V CH1 P-P = 2.00V CH1 RMS = 5.868V...
  • Page 14 CONFIDENTIAL 10 Schematic Diagrams 10-2 CA17K* Video Part Schematic Diagram 12V_A CRT1 AP17KS(70K) AP17JS(85K) DR03 DG03 DB03 RR09 RB09 1SS244 1SS244 1SS244 M41QCJ761X174(T4) 330K 330K M41QCJ761X173(T4) 1/4W 1/4W BH03-00024T BH03-00024U 180uH SDI DF CDT 130uH SDI DF CDT RG09 BD103 330K 1/4W LR11...
  • Page 15 CONFIDENTIAL 10 Schematic Diagrams 1.00 V (IC103, #5, 24) 10.0 V (R,G,B, Video) 20.00V (CRT Socket, G1) 1.00 V (IC102,#5, 8, 10) 1.00 V (IC102, #25,28,30) 20.0 V (IC105, #1, 3, 5) 1.00 V (IC103, #20, 21, 22) CH1 P-P = 1.00V CH1 RMS = 4.516V CH1 P-P = 10.0V CH1 RMS = 17.02V...
  • Page 16 CONFIDENTIAL 10 Schematic Diagrams 10-3 CA17J* Video Part Schematic Diagram 12V_A CRT1 AP17KS(70K) AP17JS(85K) DR03 DG03 DB03 RR09 RB09 1SS244 1SS244 1SS244 M41QCJ761X174(T4) 330K 330K M41QCJ761X173(T4) 1/4W 1/4W BH03-00024T BH03-00024U 180uH SDI DF CDT 130uH SDI DF CDT BD103 RG09 330K 1/4W LR11...
  • Page 17 CONFIDENTIAL 10 Schematic Diagrams 1.00 V (IC102,#5, 8, 10) 1.00 V (IC102, #25,28,30) 20.0 V (IC105, #1, 3, 5) 1.00 V (IC101, #20, 22, 24) 1.00 V (IC101, #14) 1.00 V (IC101, #15) 1.00 V (IC103, #5, 24) 1.00 V (IC103, #20, 21, 22) 10.0 V (R,G,B, Video) 20.00V (CRT Socket, G1) CH1 P-P = 1.00V...
  • Page 18 CONFIDENTIAL 9 PCB Diagrams Memo CA17K*/CA17J*...
  • Page 19 CONFIDENTIAL 8 Block Diagrams Memo CA17K*/CA17J*...
  • Page 20 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks IC201 0903-001194 IC-MICROCONTROLLER 3P863,8Bit,SDIP,42P,600MIL,12MHz,ST,CMOS,PLASTIC,5V,-,-40to+85C,1040BYTE,48KBYTE BH46-00005K MICOM-S/W CA17KS,-,-,-,-,-,- BH97-00234B ASSY AUTO-MAIN CA17JS BD301 3301-000011 CORE-FERRITE BEAD AA,3.5x1.0x5.7mm,1500,2375G BD401 3301-000011 CORE-FERRITE BEAD AA,3.5x1.0x5.7mm,1500,2375G BD402 3301-000011 CORE-FERRITE BEAD AA,3.5x1.0x5.7mm,1500,2375G BD403 3301-000011 CORE-FERRITE BEAD AA,3.5x1.0x5.7mm,1500,2375G BD405...
  • Page 21 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks C426 2401-000603 C-AL 1uF,20%,50V,GP,TP,5x11,5 C427 2306-000171 C-FILM,MPPF 270nF,5%,250V,TP,21.5x12.5mm,7 C429 2401-000603 C-AL 1uF,20%,50V,GP,TP,5x11,5 C431 2306-000164 C-FILM,MPPF 220nF,5%,250V,TP,19x22x10,7.5m C432 2305-000207 C-FILM,MPEF 18nF,5%,250V,TP,13*9*4.5,5mm C433 2305-001003 C-FILM,MPEF 10nF,5%,250V,TP,13x4.5x9mm,7.5 C434 2401-000050 C-AL 10uF,20%,16V,GP,TP,5x11,2.5 C435 2201-002079 C-CERAMIC,DISC...
  • Page 22 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks C619 2201-000469 C-CERAMIC,DISC 0.33nF,10%,500V,Y5P,TP,5.5x3,5 C620 2401-000540 C-AL 150uF,20%,63V,LZ,TP,10x25,5 C621 2401-001585 C-AL 47uF,20%,50V,WT,TP,8x11.5,5 C622 2401-000039 C-AL 1000uF,20%,16V,GP,TP,10x16,5 C623 2401-000039 C-AL 1000uF,20%,16V,GP,TP,10x16,5 C624 2201-000210 C-CERAMIC,DISC 0.12NF,10%,1KV,Y5P,TP,6.3X4MM,5 C625 2305-001041 C-FILM,MPEF 220nF,5%,63V,TP,7.5x4.5x13.5,5 C626 2401-000025 C-AL...
  • Page 23 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks D604 0402-000012 DIODE-RECTIFIER UF4007,1KV,1A,DO-41,TP D605 0402-000012 DIODE-RECTIFIER UF4007,1KV,1A,DO-41,TP D606 0402-000546 DIODE-RECTIFIER TVR10G,400V,1.0A,DO-41,TP D608 0402-001194 DIODE-RECTIFIER UG2D,200V,2A,DO-204AC,TP D610 0402-000012 DIODE-RECTIFIER UF4007,1KV,1A,DO-41,TP D611 0402-001194 DIODE-RECTIFIER UG2D,200V,2A,DO-204AC,TP D612 0402-000274 DIODE-RECTIFIER UF4004,400V,1A,DO-41,TP D614 0402-000546 DIODE-RECTIFIER...
  • Page 24 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks JP114 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP120 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP122 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP126 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP127 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP128 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0.
  • Page 25 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP82 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP85 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP87 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP93 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP94 BH39-40305U CBF HARNESS...
  • Page 26 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks R221 2001-000734 R-CARBON 4.7KOHM,5%,1/8W,AA,TP,1.8X3.2MM R222 2001-000734 R-CARBON 4.7KOHM,5%,1/8W,AA,TP,1.8X3.2MM R223 2001-000552 R-CARBON 270OHM,5%,1/4W,AA,TP,2.4X6.4MM R224 2001-000869 R-CARBON 56OHM,5%,1/8W,AA,TP,1.8X3.2MM R225 2001-000869 R-CARBON 56OHM,5%,1/8W,AA,TP,1.8X3.2MM R229 2001-000281 R-CARBON 100OHM,5%,1/8W,AA,TP,1.8X3.2MM R230 2001-000429 R-CARBON 1KOHM,5%,1/8W,AA,TP,1.8X3.2MM R231 2001-000281 R-CARBON...
  • Page 27 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks R432 2001-000020 R-CARBON(S) 22OHM,5%,1/2W,AA,TP,2.4X6.4MM R433 2003-000769 R-METAL OXIDE(S) 680ohm,5%,3W,AA,TP,6x16mm R434 2001-000449 R-CARBON 2.2KOHM,5%,1/8W,AA,TP,1.8X3.2MM R435 2001-000786 R-CARBON 47KOHM,5%,1/8W,AA,TP,1.8X3.2MM R436 2001-000449 R-CARBON 2.2KOHM,5%,1/8W,AA,TP,1.8X3.2MM R437 2001-000786 R-CARBON 47KOHM,5%,1/8W,AA,TP,1.8X3.2MM R438 2001-000449 R-CARBON 2.2KOHM,5%,1/8W,AA,TP,1.8X3.2MM R439 2001-000786...
  • Page 28 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks R554 2002-001049 R-COMPOSITION 240Kohm,5%,1/2W,AA,TP,3.9x9mm R555 2001-001088 R-CARBON(S) 1KOHM,5%,1/2W,AA,TP,2.4X6.4MM R556 2001-000613 R-CARBON 3.9KOHM,5%,1/8W,AA,TP,1.8X3.2MM R560 2001-001129 R-CARBON(S) 330KOHM,5%,1/2W,AA,TP,2.4X6.4MM R570 2001-001108 R-CARBON(S) 22KOHM,5%,1/2W,AA,TP,2.4X6.4MM R600 2001-001129 R-CARBON(S) 330KOHM,5%,1/2W,AA,TP,2.4X6.4MM R601 2001-001129 R-CARBON(S) 330KOHM,5%,1/2W,AA,TP,2.4X6.4MM R602 2001-000023 R-CARBON...
  • Page 29 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks 1204-001508 IC-VERTICAL DEF. KA2142,SIP,10P,-,PLASTIC,35V,15W,-20TO+70C,ST,VERTICAL DEFLECTION 6006-001097 SCREW-ASS’Y MACH WSP,BH,+,M3,L8,ZPC(YEL),SWRCH18A 6021-000118 NUT-HEXAGON 1C,M3,ZPC(YEL),SM20C BH62-00047A HEAT SINK-V.IC PS17NO(DELL),A1050S,T1.0,70,77,-,-,- HS601 BH99-00003A ASSY,HEAT/SINK H/S POWER,SPRING,DP104,-,-,RUBBER,-,- BH13-00004A IC-HYBRID -,DP104C,TO-220-5L,5P,POWER SWITCH,-,- BH61-00004A SPRING-TR CDA,CDB,SUS304,-,-,-,-,-,T0.5,-,-,- BH62-00004A HEAT/SINK-POWER -,T1,-,A1050S,DA/DB...
  • Page 30 CONFIDENTIAL 7 Electrical Parts List 7-2 Video PCB Parts Loc. No. Code No. Description Specification Remarks BH94-00806A ASSY PCB VIDEO CA17JS BH75-00047A UNIT/SHIELD-VIDEO/CAP CL17LO,SPTE T0.3,-,-,- BH71-00006B SHIELD VIDEO-CAP CL17LO,SPTE,0.2,-,- BH71-10311A EARTH PLATE PBS 3/4H,T0.2 BH75-00192H UNIT/SHIELD-VIDEO DEL,-,SPTE,-,-,14,15,17,- BH61-00002A SPRING-VIDEO CDB7907,STS H14 ,-,-,-,-,-,T1.0,-,-,- BH71-00007A SHIELD VIDEO CDA4507,SPTE,T0.2,-,-...
  • Page 31 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks R102 2007-000355 R-CHIP 12KOHM,5%,1/10W,DA,TP,2012 R103 2007-001071 R-CHIP 6.8KOHM,5%,1/10W,DA,TP,2012 R104 2007-000290 R-CHIP 100OHM,5%,1/10W,DA,TP,2012 R105 2007-000766 R-CHIP 330OHM,5%,1/10W,DA,TP,2012 R106 2007-000781 R-CHIP 33OHM,5%,1/10W,DA,TP,2012 R107 2007-000290 R-CHIP 100OHM,5%,1/10W,DA,TP,2012 R108 2007-000290 R-CHIP 100OHM,5%,1/10W,DA,TP,2012 R109 2007-000290 R-CHIP...
  • Page 32 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks RR10 2007-000572 R-CHIP 220OHM,5%,1/10W,DA,TP,2012 BH97-00332A ASSY AUTO-VIDEO CA17JS BD103 3301-000011 CORE-FERRITE BEAD AA,3.5x1.0x5.7mm,1500,2375G BD104 3301-000011 CORE-FERRITE BEAD AA,3.5x1.0x5.7mm,1500,2375G BD106 3301-000011 CORE-FERRITE BEAD AA,3.5x1.0x5.7mm,1500,2375G BD112 3301-000011 CORE-FERRITE BEAD AA,3.5x1.0x5.7mm,1500,2375G BD115 3301-000011 CORE-FERRITE BEAD...
  • Page 33 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks IC104 BH13-00022A IC-BIAS CLAMP LM2480NA,PN15H/17L,8P,0to+70C,DIP,3mA,85V,ST JP16 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP20 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP21 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP23 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0. JP24 BH39-40305U CBF HARNESS 52MM,AWG22(0.6PI),-,-,AWG22(0.
  • Page 34 CONFIDENTIAL 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks Q101 0501-000122 TR-SMALL SIGNAL 2N3904,NPN,625mW,TO-92,TP,100-300 Q102 0501-000122 TR-SMALL SIGNAL 2N3904,NPN,625mW,TO-92,TP,100-300 Q103 0501-000404 TR-SMALL SIGNAL KSD1616-Y,NPN,750mW,TO-92,TP,135-270 R114 2001-000331 R-CARBON 12KOHM,5%,1/8W,AA,TP,1.8X3.2MM R115 2001-000890 R-CARBON 6.8KOHM,5%,1/8W,AA,TP,1.8X3.2MM RB03 2001-000766 R-CARBON 43KOHM,5%,1/8W,AA,TP,1.8X3.2MM RB09 2001-000643 R-CARBON 330KOHM,5%,1/4W,AA,TP,2.4X6.4MM...
  • Page 35 CONFIDENTIAL 7 Electrical Parts List 7-4 Main Different Part List CA17K*/CA17J* 7-17...
  • Page 36 CONFIDENTIAL 7 Electrical Parts List 7-5 Video Different Part List 7-18 CA17K*/CA17J*...
  • Page 37 CONFIDENTIAL 6 Exploded View & Parts List Memo CA17K*/CA17J*...

  • Page 38: Dpms Failure

    CONFIDENTIAL 5 Troubleshooting 5-1-2 DPMS Failure Check signal source WAVEFORMS H/V Sync. video level. 100 V (IC601, #1) Make No H/V Sync. (power off mode) LED blinks? CH1 P-P = 100 V CH1 RMS = 325.8 V Check IC201 Pin 40. +12 V line off? Check IC201 Pin 6.
  • Page 39 CONFIDENTIAL 5 Troubleshooting 5-1-3 H_Deflection Failure Does PWM output signal appear Does DC 12V appear at Check 12 V line. at Pin 6 (B_out) of IC401? Pin 10 of IC401? WAVEFORMS Check IC401. 2.00 V (IC401, #6) Does Horizontal pluse signal Check IC401.
  • Page 40 CONFIDENTIAL 5 Troubleshooting 5-1-5 H_Lin. Failure IC201 Pin 21 voltage varies with Replace IC201. different H_Lin. DAC values? IC603 Pin 9 voltage varies with Check +13V, Coil_5V line. different H_Lin. DAC values? Check some parts around IC603. Check Q412, Q413 and T402. 5-1-6 Invariable H_Size IC401 Pin 6 voltage varies with Check and replace IC401.
  • Page 41 CONFIDENTIAL 5 Troubleshooting 5-1-8 Side Pin or Trap Failure WAVEFORMS IC401 Pin 11 output exists? Check and replace IC401. 1.00 V (IC401, #11) Refer to 5-1-7 Abnormal H_Size . CH1 P-P = 1.00V CH1 RMS = 3.008 V 5-1-9 Para. or Pin Balance Failure IC401 Pin 11 output varies with Refer to 5-1-7 Abnormal H_Size .
  • Page 42 CONFIDENTIAL 5 Troubleshooting 5-1-11 V Deflection Failure WAVEFORMS 13V and –10V lines are on? Refer to 5-1-1 No Power Supply. 500 V (IC401, #12) IC401 Pin 12 output exists? Check and replace IC401. CH1 P-P = 500 V CH1 RMS = 1.425 V Check and replace some parts 10.0 V (IC301, #6) IC301 Pin 6 output exists?
  • Page 43 CONFIDENTIAL 5 Troubleshooting 5-1-13 High Voltage Failure WAVEFORMS Check and replace IC401 IC401 Pin 6 OSC pulse exists? 2.00 V (IC401, #6) and +12 V line. Q402 Gate driving pulse exists? Check and replace Q401 and Q423. CH1 P-P = 2.00 V CH1 RMS = 5.868 V 2.00 V (Q402, Gate) Check and replace Q402 Drain pulse exists?
  • Page 44 CONFIDENTIAL 5 Troubleshooting 5-1-15 Dynamic Focus Failure WAVEFORMS IC401 Pin 32 output is right? Replace the IC401. 2.00 V (IC401, #32) Some parts around Q551 are right? Replace failed part. CH1 P-P = 2.00V CH1 RMS = 6.124V T502 Pin 6 input is right? 50.0 V (T502, #6) Check and replace C432.
  • Page 45 CONFIDENTIAL 5 Troubleshooting 5-1-16 No Video WAVEFORMS Check signal cable and connection. 1.00 V (IC102,#5, 8, 10) IC102 Pin 5, 8 and 10 Check the signal cable connection. inputs are right? IC102 Pin 25, 28 and 30 Check I C bus and +12 V line. outputs are right? 1.00 V (IC102, #25,28,30) IC105 Pin 1, 3 and 5...

  • Page 46: Micom Failure

    CONFIDENTIAL 5 Troubleshooting 5-1-17 No Highlight Zone (CA17J* Only) WAVEFORMS 1.00 V (IC101, #20, 22, 24) IC101 Pin 2, 4 and 6 inputs are right? IC101 Pin 20, 22 and 24 Check +5V IC101 pin 1, 23. outputs are right? 1.00 V (IC101, #14) IC101 Pin 12, 13 are right? Check Micom (IC201)
  • Page 47 CONFIDENTIAL 5 Troubleshooting 5-1-19 OSD Failure WAVEFORMS IC103 Pin 5, 24 input is 5V? Check +5V Line. 1.00 V (IC103, #5, 24) Check IC103 Pin 7, 8 I Check I C wavefroms. Data / Clock Line? CH1 P-P = 1.00V CH1 RMS = 4.516V IC103 Pin 6 and 17 Check H-FLB 2, V_BLK.
  • Page 48 CONFIDENTIAL 5 Troubleshooting 5-1-20 User Control Failure Does the DC level change at Check the button. Pin 36 of IC201 when you (SW201 ~ SW204) push the button S/W? Check IC201, CN2 and CN206. 5-1-21 Degaussing Failure Check degaussing connector. RL601 operation is right? Check D-coil and TH601.

  • Page 49: General Troubleshooting

    CONFIDENTIAL 5 Troubleshooting 5-2 General Troubleshooting 5-2-1 No Picture LED blinks? Refer to 5-2-2 Shut down. LED is green color? Check Micom. Check G2 voltage, high voltage and R, G, B cathode voltage. 5-2-2 Shut Down Blinking LED’s? Check power supply. Check horizontal, vertical deflection Scan failure? system and check power...
  • Page 50 CONFIDENTIAL 5 Troubleshooting 5-2-3 Missing Color WAVEFORMS 10.0 V (R,G,B, Video) Proper Video levels are Check signal generator. on CN101 (D-Sub) Pin 1, 3 and 5? Proper Video signal is Refer to 5-1-16 No Video. on all cathodes? CH1 P-P = 10.0V CH1 RMS = 17.02V Check IC101 Pin 18, 21 and 24.
  • Page 51 CONFIDENTIAL 5 Troubleshooting 5-2-4 Visible Retrace WAVEFORMS Check white balance adjustment. 5.00V (Q501, Emitter) G2 voltage is right? Check D502, D518, Q501, Adjust G2. Blank pulse is on Pin 17 of IC401? Check IC401. CH1 P-P = 5.00V CH1 RMS = 28.33V 20.00V (CRT Socket, G1) V_FLB pulse is on Check Blank pulse is on...
  • Page 52 CONFIDENTIAL 5 Troubleshooting 5-2-5 Unsynchronized Image Check input signals Pin 2 and 3 of CN202. Signals are right? Check Video Cable. Signals at Pin 28 and 29 of Check IC201. IC201 are right? Signals at Pin 14 and 15 of Check IC401.
  • Page 53 CONFIDENTIAL 5 Troubleshooting 5-2-6 Misconvergence Try readjusting convergence. The convergence is Done. now within spec.? Readjust convergence. The convergence is Done. now within spec.? Change CRT and readjust convergence. Done. CA17K*/CA17J* 5-17...
  • Page 54 CONFIDENTIAL 5 Troubleshooting 5-2-7 Poor Focus Adjust focus VR of FBT. Aging monitor and check for focus Improved focus? change. Check focus leads from FBT to CRT Socket. Check the CRT Socket. Refer to 5-1-15 Dynamic Dynamic focus circuit is right? Focus Failure.
  • Page 55 CONFIDENTIAL 4 Alignment and Adjustments 4-2 Display Control Adjustments 4-2-1 HIGH VOLTAGE ADJUSTMENT Signal: 1024 x 768 (68 kHz/85 Hz) Use control bar after selecting “H-SIZE” in the left Display image: Don’t care menu to adjust the horizontal size of the display Contrast: Minimum pattern to 312 mm (Tolerance : ±3 mm)
  • Page 56 CONFIDENTIAL 4 Alignment and Adjustments 4-2-4 Linearity 4-2-5 Trapezoid Adjustment CONDITIONS Linearity affects the symmetry of images as they appear on the screen. Unless each row or column Scanning frequency: 68 kHz/85 Hz of blocks in a crosshatch pattern is of equal size, Display image: Crosshatch pattern or within the tolerances shown in Tables 4-2 and...
  • Page 57 CONFIDENTIAL 4 Alignment and Adjustments 4-2-7 Parallelogram Adjustment 4-2-9 Degauss CONDITIONS No adjustments are available for the degaussing Scanning Frequency: 68 kHz/85 Hz circuit. The degaussing circuit can effectively Display image: Crosshatch pattern function only once per 30 minutes. Brightness: Maximum 4-2-10 To Delete the User Mode Data Contrast:...

  • Page 58: Color Adjustments

    CONFIDENTIAL 4 Alignment and Adjustments 4-3 Color Adjustments CAUTION:Check below condition before color 4-3-2 (b) WHITE BALANCE ADJUSTMENT adjustment CONDITIONS Video signal : Analog 0.7 Vp-p (at 75 Ω) Scanning frequency: 68 kHz/85 Hz Sync : TTL level (H, V seperate signal) Display image: White box pattern Brightness:...
  • Page 59 CONFIDENTIAL 4 Alignment and Adjustments 4-3-2 (d) ABL ADJUSTMENT 5. Check whether the white coordinates of the video meet the above coordinates spec. CONDITIONS 6. Select “@8: 24-ft “ in right menu. Scanning frequency: 68 kHz/85 Hz 7. Check whether the white coordinates of the Display image: Full white pattern video satisfies the above spec.
  • Page 60 CONFIDENTIAL 4 Alignment and Adjustments PROCEDURE PROCEDURE Measure luminance at nine points on the display For trained and experienced service technicians screen (see figure below). only. Use the following procedure to correct minor color purity problems: 1. Make sure the display is not affected by external magnetic fields.
  • Page 61 CONFIDENTIAL 4 Alignment and Adjustments Memo CA17K*/CA17J*...
  • Page 62 CONFIDENTIAL 3 Disassembly and Reassembly 6. Remove the Shield.(TCO 99) 3-1-4 Removing the Main PCB 1. Complete all previous steps. 2. Disconnect the Degaussing Coil at CN603 on the Main PCB. 3. Disconnect all easily accessible ground wires on the PCB and Bottom Chassis. 4.

  • Page 63: Pin Assignments

    CONFIDENTIAL 2 Product Specifications 2-2 Pin Assignments Sync Type Macintosh Separate Pin No. GND-R Green Blue H/V Sync Sense 0 DDC Return Green GND-R GND-G GND-G Sense 1 GND-B Reserved Blue GND-Sync/Self-raster Sense 2 DDC Data V-Sync H-Sync GND-B V-Sync DDC Clock H-Sync Figure 2-1.

  • Page 64: Timing Chart

    CONFIDENTIAL 2 Product Specifications 2-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 2-1. Timing Chart Mode VESA 640/75 Hz 1280/75 Hz VGA2/70 Hz VGA3/60 Hz 800/75 Hz 800/85 Hz 1024/75 Hz...
  • Page 65 CONFIDENTIAL 2 Product Specifications Memo CA17K*/CA17J*...

  • Page 66: Servicing Precautions

    CONFIDENTIAL 1 Precautions 1-2 Servicing Precautions WARNING1: First read the “Safety Precautions” section of this manual. If unforeseen circumstances create conflict between the servicing precautions and safety precautions, always follow the safety precautions. WARNING2: A high voltage adjusted to the wrong value may cause excessive X-ray emissions. WARNING3: An electrolytic capacitor installed with the wrong polarity might explode.
  • Page 67 Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea. Printed in Korea P/N : BH81-00018A-00 http://www.samsungmonitor.com (SyncMaster Worldwide) http://www.samsung-monitor.com (SyncMaster USA) http://www.sec.co.kr/monitor (Korea)

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