COLOR MONITOR PN17KT/KO PN17JT/JO SERVICE Manual COLOR MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Alignment & Adjustments 5. Troubleshooting 6. Exploded View & Parts List PN17KT/JT 7. Electrical Parts List 8. Block Diagram 9. Wiring Diagram 10.
Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea. Tel : +82-31-200-7920 Fax : +82-31-200-7802 Printed in Korea P/N : BH68-00393J-00 http://www.samsungmonitor.com (SyncMaster Worldwide) http://www.samsung-monitor.com (SyncMaster USA) http://www.samtron.com (SAMTRON Worldwide) http://www.sec.co.
1 Precautions 1-1 Safety Precautions WARNINGS 1. For continued safety, do not attempt to modify the circuit board. 2. Disconnect the AC power before servicing. 3. When the chassis is operating, semiconductor heatsinks are potential shock hazards. 1-1-1 1. When servicing the high voltage system, remove the static charge by connecting a 10 kohm resistor in series with an insulated wire (such as a test probe) between the chassis and the anode lead. 2.
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. 1. Servicing precautions are printed on the cabinet, and should be followed closely.
2 Product Specifications 2-1 Specifications Description Item PN17K* PN17J* Picture Tube: 17-Inch (43 cm): 16-inch (40.6 cm) viewable, Perfect Flatness, 90˚ Deflection, Semi- tint, Invar shadow mask, Anti-static silica coating, 0.26 mm Dot pitch Scanning Frequency Horizontal Vertical 30 kHz ~ 70 kHz (Automatic) 50 Hz ~ 160 Hz (Automatic) Display Colors Unlimited colors Maximum Resolution Horizontal Vertical 1280 Dots 1024 Lines Input Video Signal Analog, 0.
2 Product Specifications 2-2 Pin Assignments Sync Type Separate Macintosh Pin No. 1 Red GND-R 2 Green Red 3 Blue H/V Sync. 4 N-C Sense 0 5 GND (DDC) Green 6 GND-R GND-G 7 GND-G Sense 1 8 GND-B Reserved 9 N-C Blue 10 GND-Sync./Self-raster Sense 2 11 N-C GND 12 DDC Data V-Sync. 13 H-Sync. GND-B 14 V-Sync. GND 15 DDC Clock H-Sync. 1 6 2 7 5 3 10 8 12 13 14 15 Figure 2-1. Male Type 2-2 Figure 2-2.
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 IBM VESA 640/75 Hz VGA2/70 Hz VGA3/60 Hz 640 x 480 720 x 400 640 x 480 Timing (PN17K*) 640/85 Hz 640 x 480 800/75 Hz 800/85 Hz 1024/75 Hz 1024/85 Hz 1280/75 Hz 1280 x 1024 800 x 600 800 x 600 1024 x 768 1024 x 768 (PN17J*) fH (kHz) 31.469 31.469 37.500 43.269 46.875 53.674 60.
2 Product Specifications Memo 2-4 PN17K*/PN17J*
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the PN17K*/PN17J* monitors. 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. To remove the Rear Cover, you must use the special opening jig tool. 3-1-1 Before making Disassembly 1. Disconnect the power cord from the monitor.
3 Disassembly and Reassembly 7. Using pinch-nose pliers or ling-nose pliers, acrefully disconnect the Anode Cap from the CRT. Warning: Do not touch the Anode contact on the CRT (High Voltage may remain). 3-1-3 Removing the CRT Socket PCB 1. Complete all previous steps. 2. Lift up the Video Spring and remove the CRT Socket PCB from the CRT. Figure 7 6. Disconnect the Tilt connector at the CN2(CN22) connector on the Main PCB. 7. Disconnect the Sub PCB connector at the CN201 connector on the Main PCB. 8.
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.
4 Alignment and Adjustments 4-1-3 Connecting the SoftJig Connect the monitor to the signal generator and/ or PC as illustrated in Figures 4-1 and 4-2. Note: The signal cable connector which includes the 3-wire cable must connect to the monitor. If you use Setup 2 (PC only, no signal generator) you can only make adjustments to the signal timing available on that computer system. To make corrections to all factory timings requires the use of an additional signal generator. MONITOR INTERFACE BOARD VER. 2.
4 Alignment and Adjustments 4-2 Display Control Adjustments 4-2-1 HIGH VOLTAGE ADJUSTMENT Signal: Display image: Contrast: Brightness: Limit: 1024 x 768 (68 kHz/85 Hz) Don’t care Manimum Manimum 26.0 kV ± 0.5 kV Measure the hight voltage level at the anode cap. High voltage should be within the limit as above. If the high voltage needs adjustment use the following procedure. PROCEDURE 1. Turn the power off and disconnect the AC line cord from the power source. 2.
4 Alignment and Adjustments 4-2-4 (c) HORIZONTAL POSITION ADJUSTMENT CONDITIONS Scanning frequency: Display image: 68 kHz/85 Hz Crosshatch pattern Use control bar after selecting “H-POSITION” in left menu to center the horizontal image on the raster. 4-2-4 (d) VERTICAL POSITION ADJUSTMENT CONDITIONS Scanning frequency: Display image: 68 kHz/85 Hz Crosshatch pattern Use control bar after selecting “V-POSITION” in left menu to center the vertical image on the raster.
4 Alignment and Adjustments 4-2-6 Trapezoid Adjustment 4-2-9 Side Pincushion Adjustment CONDITIONS Scanning frequency: Display image: Brightness: Contrast: CONDITIONS Scanning frequency: Display image: 68 kHz/85 Hz Crosshatch pattern Maximum Maximum Use control bar after selecting “TRAPEZOID” in left menu to make the image area rectangular. Use control bar after selecting “PINCUSHION” in left menu to straighten the sides of the image area. | C1 |, | C2 | ≤ 2.0 mm, | D1 |, | D2 | ≤ 2.0 mm.
4 Alignment and Adjustments 4-3 Color Adjustments CAUTION: Check below condition before color adjustment Video signal : Analog 0.7 Vp-p (at 75 ) Sync : TTL level (H, V seperate signal) 4-3-2 (b) R.G.B - GAIN ADJUSTMENT 1/3H-1/2H FRONT BEZEL OPENING * Select “Color” in Softjig menu for color adjustment. BACK RASTER 1/3V-1/2V 4-3-1 Color Coordinates (Temperature) WHITE WINDOW Color temperature is a measurement of the radiant energy transmitted by a color.
4 Alignment and Adjustments Display image: X-Y Coordinates: ABL Luminance Brightness: Contrast: Back raster pattern Full White Pattern x = 0.283 ± 0.02, y = 0.298 ± 0.02 Refer to 4-3-2(c) Maximum 5 ft-L, 24 ft-L 1. Check whether the color coordinates of the back raster satisfy the above spec. If they do not, return to 4-3-2 (a) and readjust all settings.
4 Alignment and Adjustments Memo 4-8 PN17K*/PN17J*
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 1 100 V (IC601, #1) Chirping noise exists? Yes Check and replace IC601. No Repeating start? CH1 P-P = 100 V Yes CH1 RMS = 350.2 V Check and replace D606.
5 Troubleshooting 5-1-2 DPMS Failure WAVEFORMS Check signal source H/V Sync. video level. 2 100V (IC601, #1) Make No H/V Sync. (power off mode) CH1 P-P = 100V LED blinks? No CH1 RMS = 325.8 V Check IC201 Pin 40. Yes +12 V line off? No Check IC201 Pin 6. Yes IC602 Pin 4 voltage exists? No Check IC201 Pin 6. Check and replace IC602. Yes 2 IC601 Pin 1 output voltage exists? No Refer to 5-1-1 No Power Supply.
5 Troubleshooting 5-1-3 H_Deflection Failure 3 Does PWM output signal appear at Pin 6 (B_out) of IC401? No Yes Does DC 12V appear at Pin 10 of IC401? No Check 12 V line. Yes WAVEFORMS Check IC401. 4 Does Horizontal pluse signal appear at Pin 8 of IC401? No 3 2.00 V (IC401, #6) Check IC401. CH1 P-P = 2.00V Yes CH1 RMS = 5.868V 4 2.00V (IC401, #8) Does 110 Vp-p signal appear 5 at Collector of Q403? No Check Q403. Yes CH1 P-P = 2.00V Check Q402, Q404 and T401. CH1 RMS = 5.868V 5 20.
5 Troubleshooting 5-1-5 H_Lin. Failure IC201 Pin 21 voltage varies with different H_Lin. DAC values? No Replace IC201. Yes IC603 Pin 9 voltage varies with different H_Lin. DAC values? No Check +13V, –10V line. Check some parts around IC603. Yes Check Q412, Q413 and T402. 5-1-6 Invariable H_Size IC401 Pin 6 voltage varies with different B_Out DAC values? No Check and replace IC401. Yes Q402 Gate output duty varies with different B_Out DAC values? No Check some parts around Q402, IC401 Pin 3 ~ 6.
5 Troubleshooting 5-1-8 Side Pin or Trap Failure 7 IC401 Pin 11 output exists? No WAVEFORMS Check and replace IC401. 7 1.00 V (IC401, #11) Yes 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 different DAC values? Yes Refer to 5-1-7 Abnormal H_Size. No Replace IC401. 5-1-10 Tilt Failure Check tilt connector connection IC201 Pin 20 output duty varies with different DAC values? No Check and replace IC201.
5 Troubleshooting 5-1-11 V Deflection Failure 13V and –10V lines are on? No WAVEFORMS Refer to 5-1-1 No Power Supply 8 500 V (IC401, #12) Yes 8 IC401 Pin 12 output exists? No Check and replace IC401. CH1 P-P = 500 V 9 10.0 V (IC301, #6) Yes 9 IC301 Pin 6 output exists? CH1 RMS = 1.425 V No Check and replace some parts around IC301. Yes CH1 P-P = 10.0 V CH1 RMS = 5.06 V Check DY connector connection.
5 Troubleshooting 5-1-13 High Voltage Failure WAVEFORMS 3 IC401 Pin 6 OSC pulse exists? No Check and replace IC401 and +12 V line. 3 2.00 V (IC401, #6) Yes 10 Q402 Gate driving pulse exists? No Check and replace Q401 and Q423. CH1 P-P = 2.00 V CH1 RMS = 5.868 V 10 2.00 V (Q402, Gate) Yes 11 Q402 Drain pulse exists? No Check and replace D401, Q403 and L402. CH1 P-P = 2.00 V Yes CH1 RMS = 7.692V 11 50.0 V (Q402, Drain) Done 5-1-14 ABL Failure CH1 P-P = 50.0 V CH1 RMS = 73.
5 Troubleshooting 5-1-15 Dynamic Focus Failure 12 IC401 Pin 32 output is right? No WAVEFORMS Replace the IC401. 12 2.00 V (IC401, #32) Yes Some parts around Q551 are right? No Replace failed part. CH1 P-P = 2.00V 13 50.0 V (T502, #6) Yes 13 T502 Pin 6 input is right? No Check and replace C432. Yes 14 T502 Pin 1 output is right? CH1 RMS = 6.124V CH1 P-P = 50.0V No CH1 RMS = 75.6V 14 100 V (T502, #1) Replace the T502. No Check the connection between FBT Focus pin and CRT Socket PCB.
5 Troubleshooting 5-1-16 No Video WAVEFORMS Check signal cable and connection. 15 1.00V (IC101 #12,14,16) 15 IC101 Pin 12, 14 and 16 inputs are right? No Check the signal cable connection. Yes 16 IC101 Pin 18, 21 and 24 outputs are right? CH1 P-P = 1.00V No CH1 RMS = 2.452V 16 1.00V (IC101 #18,21,24) Check I2C bus and +12V line. Yes 17 IC103 Pin 1, 2 and 3 outputs are right? No Check +12V, +72 V line. Check and replace IC103. CH1 P-P = 1.00V CH1 RMS = 2.792V 17 20.
5 Troubleshooting 5-1-17 Micom Failure IC201 Pin 11 input voltage is 5V? No WAVEFORMS Check IC604. 18 1.00 V (IC201, #13, 14) Yes 18 IC201 Pin 13 and 14 inputs are right? No Check C202, C203 and X201. CH1 P-P = 1.00 V CH1 RMS = 2.108V Yes IC201 Pin 18 input is right? No Check IC605. Yes All in/output values are right? No Replace IC201.
5 Troubleshooting 5-1-18 OSD Failure WAVEFORMS Check CN104 and connector Ass’y. 19 1.00 V (IC101, #32) Yes 19 IC101 Pin 32 input is right? No Check amd replace Q102. Check CN102 Pin 14. Yes 20 IC101 Pin 1 input is right? CH1 P-P = 1.00V No CH1 RMS = 4.516V 20 1.00 V (IC101, #1) Check CN102 Pin 8. Yes IC101 Pin 29 and 30 inputs are right? No Check IC201 Pin 41 and 42. CH1 P-P = 1.00V CH1 RMS = 5.024V 21 1.
5 Troubleshooting 5-1-19 User Control Failure Does the DC level change at Pin 36 of IC201 when you push the button S/W? No Check the button. (SW201 ~ SW204) Yes Check IC201. 5-1-20 Degaussing Failure Check degaussing connector. RL601 operation is right? Yes Check D-coil and TH601. No Q601 base input is right? Yes Check and replace Q601. No IC201 Pin 4 output is right? No Check and replace IC201.
5 Troubleshooting 5-2 General Troubleshooting 5-2-1 No Picture LED blinks? Yes Refer to 5-2-2 Shut down. No LED is green color? Yes Check Micom. No Check G2 voltage, high voltage and R, G, B cathode voltage. 5-2-2 Shut Down Blinking LED’s? No Check power supply. Yes Scan failure? Yes Check horizontal, vertical deflection system and check power supply secondary voltages. No Video failure? Yes Check Video board. No Check and replace IC201.
5 Troubleshooting 5-2-3 Missing Color WAVEFORMS Proper Video levels are on CN101 (D-Sub) Pin 1, 3 and 5? No Check signal generator. 22 10.0 V (R,G,B, Video) Yes 22 Proper Video signal is on all cathodes? No Refer to 5-1-16 No Video. CH1 P-P = 10.0V CH1 RMS = 17.02V Yes Proper DC voltage is on all cathodes? No Check IC101 Pin 17, 20 and 23. Check QR01, QR02, QG01,. QG02, QB01, and QB02. Yes G2 voltage is right? No Check Q501 and D520.
5 Troubleshooting 5-2-4 Visible Retrace Check white balance adjustment. G2 voltage is right? No WAVEFORMS Check D502, D517 and Q501. 23 5.00V (Q303, Collector) Yes Blank pulse is on Pin 17 of IC401? No Check IC401. CH1 P-P = 5.00V 24 20.00V (CRT Socket, G1) Yes 23 V_FLB pulse is on Collector of Q303? No Check Q303. Yes 24 Does approve the Vertical pulse on the CRT Socket G1? CH1 RMS = 28.33V CH1 P-P = 20.0V No CH1 RMS = 66.68V Check CN102 and CN201.
5 Troubleshooting 5-2-5 Unsynchronized Image Check input signals Pin 2 and 3 of CN202. Signals are right? No Check Video Cable Yes Signals at Pin 28 and 29 of IC201 are right? No Check IC201. Yes Signals at Pin 14 and 15 of IC401 are right? No Check IC401 Yes Check circuits on Main board.
5 Troubleshooting 5-2-6 Misconvergence Try readjusting convergence. The convergence is now within spec.? Yes Done No Readjust convergence. The convergence is now within spec.? Yes Done No Change CRT and readjust convergence.
5 Troubleshooting 5-2-7 Poor Focus Adjust focus VR of FBT. Improved focus? Yes Aging monitor and check for focus change. No Refer to 5-1-15 Dynamic Focus Failure. No Check focus leads from FBT to CRT Socket. Check the CRT Socket. Dynamic focus circuit is right? Yes Replace the CRT and verify focus. 5-2-8 Purity Failure Degaussing Purity is right? Yes Done No Degaussing circuit is right? No Refer to 5-1-20 Degaussing Failure. Yes Replace CRT and verify purity.
6 Exploded View and Parts List 6-1 PN17KT/JT PN17K*/PN17J* 6-1
6 Exploded View & Parts List 6-2 PN17KO/JO 6-2 PN17K*/PN17J*
6 Exploded View and Parts List 6-1-1 Front Cover & CRT Ass’y (PN17KT/JT) PN17K*/PN17J* 6-3
6 Exploded View & Parts List 6-1-2 Chassis & Stand Ass’y (PN17KT/JT) 6-4 PN17K*/PN17J*
6 Exploded View & Parts List 6-1-3 Rear Ass’y (PN17KT/JT) PN17K*/PN17J* 6-5
6 Exploded View & Parts List 6-2-1 Front Cover & CRT Ass’y (PN17KO/JO) 6-6 PN17K*/PN17J*
6 Exploded View & Parts List 6-2-2 Chassis & Stand Ass’y (PN17KO/JO) PN17K*/PN17J* 6-7
6 Exploded View & Parts List 6-2-3 Rear Ass’y (PN17KO/JO) 6-8 PN17K*/PN17J*
7 Electrical Parts List 7-1 Main PCB Parts (PN17K*) Loc. No. Code No.
7 Electrical Parts List Loc. No. BD602 BD603 C201 C202 C203 C204 C205 C206 C207 C209 C210 C211 C212 C213 C214 C215 C216 C217 C220 C225 C301 C302 C305 C306 C307 C308 C309 C310 C311 C312 C313 C401 C402 C403 C404 C405 C406 C407 C408 C410 C411 C412 C413 C414 C415 C416 C417 C419 C420 C421 C423 C425 C426 C427 C429 C431 C432 C433 C434 C435 C436 7-2 Code No.
7 Electrical Parts List Loc. No. C445 C446 C447 C448 C450 C501 C502 C503 C504 C505 C506 C507 C508 C509 C510 C511 C512 C513 C514 C530 C551 C552 C557 C603 C604 C607 C609 C610 C611 C612 C613 C614 C615 C616 C617 C618 C619 C620 C621 C622 C623 C624 C625 C626 C627 C630 C631 C635 CN304 CN603 D301 D401 D402 D403 D404 D405 D407 D410 D411 D412 D413 Code No.
7 Electrical Parts List Loc. No. D420 D421 D422 D431 D432 D501 D502 D503 D504 D505 D506 D507 D508 D509 D510 D511 D512 D513 D515 D516 D517 D518 D519 D602 D604 D605 D606 D607 D608 D610 D611 D612 D614 D615 D616 D617 EY301 EY302 EY401 EY402 EY403 EY501 EY502 EY503 EY504 EY505 EY506 EY507 EY508 EY510 EY601 EY602 EY603 EY604 EY605 EY606 EY607 EY608 EY609 EY610 FH1 7-4 Code No.
7 Electrical Parts List Loc. No. GT501 GT603 GT604 IC202 IC603 IC605 J19 JP1 JP10 JP11 JP12 JP13 JP14 JP15 JP16 JP17 JP18 JP2 JP20 JP22 JP23 JP24 JP25 JP26 JP27 JP28 JP29 JP3 JP31 JP32 JP33 JP34 JP35 JP36 JP37 JP38 JP39 JP4 JP40 JP41 JP42 JP43 JP44 JP45 JP46 JP47 JP48 JP5 JP50 JP51 JP52 JP53 JP54 JP55 JP56 JP57 JP58 JP59 JP6 JP60 JP61 Code No.
7 Electrical Parts List Loc. No. JP63 JP64 JP65 JP67 JP68 JP7 JP70 JP71 JP72 JP76 JP8 JP82 JP84 JP85 JP9 MP1.0 Q301 Q302 Q303 Q401 Q405 Q406 Q407 Q412 Q413 Q414 Q415 Q416 Q423 Q501 Q502 Q503 Q551 Q601 Q602 Q604 Q608 Q609 Q610 R200 R201 R202 R203 R204 R206 R207 R208 R209 R210 R211 R212 R213 R214 R215 R216 R217 R218 R220 R221 R222 R223 7-6 Code No.
7 Electrical Parts List Loc. No. R224 R225 R229 R230 R235 R236 R239 R301 R302 R303 R304 R306 R307 R308 R309 R310 R311 R312 R315 R316 R317 R318 R319 R320 R321 R322 R323 R324 R325 R326 R402 R403 R404 R405 R406 R407 R408 R409 R410 R411 R412 R413 R414 R415 R416 R417 R418 R419 R420 R422 R423 R424 R425 R426 R427 R428 R429 R430 R431 R432 R433 Code No.
7 Electrical Parts List Loc. No. R434 R435 R436 R437 R438 R439 R440 R441 R443 R444 R445 R446 R447 R448 R449 R450 R451 R452 R453 R454 R458 R459 R460 R500 R501 R502 R503 R504 R505 R506 R507 R508 R509 R510 R511 R512 R513 R514 R515 R516 R518 R519 R524 R525 R526 R527 R529 R530 R531 R532 R551 R552 R553 R554 R555 R556 R560 R561 R570 R600 7-8 Code No.
7 Electrical Parts List Loc. No. Code No.
7 Electrical Parts List Loc. No. Code No. Description Specification Remarks CIS CIS CIS CIS CIS 0502-000465 0502-001170 BH61-00004A BH61-70003A BH62-00015A TR-POWER TR-POWER SPRING-TR SPRING HEAT SINK-FBT KTD2058,NPN,25000mW,TO-220IS,ST,100-200 2SC5440,NPN,60000mW,TOP-3E,ST,-8 CDA,CDB,SUS304,T0.5,-,-,-,CVT4857,STS304-W1/2H,T0.5,W3.8 A1050S,T1.0,T1.
7 Electrical Parts List 7-2 Video PCB Parts (PN17K*) Loc. No. C160 CIS CIS CIS CIS CIS CIS CIS CIS CN101 CN102 IC101 JP146 LJP1 S/VID S/VID+H/S SK01 BD102 BD103 C102 C103 C105 C106 C107 C108 C112 C113 C114 C116 C117 C118 C119 C120 C121 C123 C124 C128 C151 C152 CB01 CB02 CB04 CB05 CB06 CB07 CB08 CB09 CG01 CG02 CG04 CG05 CG06 CG07 CG08 CG09 CR01 CR02 CR04 CR05 CR06 CR07 CR08 CR09 D102 Code No.
7 Electrical Parts List Loc. No. DB01 DB02 DB03 DB04 DB05 DB06 DG01 DG02 DG03 DG04 DG05 DG06 DR01 DR02 DR03 DR04 DR05 DR06 EY1 EY2 EY3 EY4 G2 GND JP103 JP109 JP116 JP117 JP119 JP122 JP123 JP124 JP127 JP128 JP133 JP134 JP136 JP137 JP140 JP142 JP147 JP148 JP150 JP151 JP152 L101 L103 LB01 LG01 LR01 MP1.3 Q102 QB01 QB02 QG01 QG02 QR01 QR02 R101 R102 R103 R104 R107 7-12 Code No.
7 Electrical Parts List Loc. No. Code No.
7 Electrical Parts List 7-3 Others Loc. No. Code No.
PN17K*/PN17J* AC INPUT SOCKET CN601 ON THE CRT TO D-COIL LINE FILTER L601 DEGAUSSING BLOCK RL601 24LC04 EPROM IC202 MCU IC201 H/V SYNC VIDEO INPUT FRONT CONTROL BOARD LED POWER UP, DOWN BRIGHTNISS CONTRASTER PIN, TRAP SIZE, POSI, DEGA. SIGNAL RETIFIER BRIDGE POWER PWM CONTROL IC601C TILT V-MUTE S-CORRECTION REF- OFF BB HOR. LINEARITY REG. 12C DATA 12C CLK H-SYNC1 V-SYNC1 E/W_OUT H-SYNC, V-SYNC MAIN BOARD SWITCHING TRANS T601 KSC945 VER. BLANKING Q303 HOR./VER.
8 Block Diagrams Memo 8-2 PN17K*/PN17J*
9 Wiring Diagram MAIN PCB CRT SOCKET PCB CRT SOCKET FOCUS1 (WHT) FOCUS2 (RED) G2 2 x 3p DY 15"/17" H+ (RED) H+ NC (BLUE) H(YEL) V+ H– NC (BROWN)V- 1 1 2 3 4 2 3 4 (YEL)V+ 1 NC 2 (Brown)V – 3 1 2 3 2 x 3p DY 15"/17" H + H + CN401 H– NC CN402 V + H– CN302 V– NC CN303 1 2 V + NC V– CN301 1 1 2 2 AC INPUT AC AC 1 AC INPUT 2 NC 3 AC INPUT V+ V– GT601 GT602 FOCUS (WHT) CN102 CN201 70 V GND 6.
9 Wiring Diagrams Memo 9-2 PN17K*/PN17J*
10 Schematic Diagrams 10-1 Main Part Schematic Diagram 9 23 GT501 R516 D516 R531 V_REG_1 3 12 IC201 R526 T501 R527 R532 R507 C404 REG D515 R530 CN501 R505 S4 18 11 R458 R410 L402 D431 4 C410 Q423 REG R239 C408 Q402 C445 C447 R212 10 C406 R211 T502 C225 V_REG_1 R455 7 8 14 C448 13 C446 L403 Q420 S4 R456 R419 C442 D430 R420 C425 C430 C427 Q421 C417 C412 Q407 R459 L401 R443 C441 R457 C411 C435 D612 C443 HS403 C624 D407 BD401 BD402 C604 C444 Q422 Q608
10 Schematic Diagrams 1 100 V (IC601, #1) 2 100V (IC601, #1) 3 2.00 V (IC401, #6) 4 1.00V (IC401, #8) 5 20.0 V (Q403, Collector) CH1 P-P = 100 V CH1 P-P = 100V CH1 P-P = 2.00V CH1 P-P = 2.00V CH1 P-P = 20.0 V CH1 RMS = 350.2 V CH1 RMS = 325.8 V CH1 RMS = 5.868V CH1 RMS = 5.868V CH1 RMS = 46.80V 6 200 V (Q408, Collector) 7 1.00 V (IC401, #11) 8 500 V (IC401, #12) 9 10.0 V (IC301, #6) 10 2.00 V (Q402, Gate) CH1 P-P = 200V CH1 P-P = 1.00V CH1 P-P = 500 V CH1 P-P = 10.0 V CH1 P-P = 2.
10 Schematic Diagrams 10-2 Video Part Schematic Diagram 19 20 24 16 21 22 15 17 PN17K*/PN17J* 10-3
10 Schematic Diagrams 15 1.00V (IC101 #5, 6, 7) 16 1.00V (IC101 #18,19,20) 17 20.0V (IC103, #1, 2, 3) 19 1.00 V (IC104, #6) 20 1.00 V (IC104, #8) CH1 P-P = 1.00V CH1 P-P = 1.00V CH1 P-P = 20.0V CH1 P-P = 1.00V CH1 P-P = 1.00V CH1 RMS = 2.452V CH1 RMS = 2.792V CH1 RMS = 40.52V 21 1.00 V (IC101, #18,19,20) 22 10.0 V (R,G,B, Video) 24 20.00V (CRT Socket, G1) CH1 P-P = 1.00V CH1 P-P = 10.0V CH1 P-P = 20.0V 10-4 CH1 RMS = 2.580V CH1 RMS = 17.02V CH1 RMS = 4.516V CH1 RMS = 5.
