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File name PG17HS9U_ADJUST.pdf

4 Alignment and Adjustments This section of the service manual explains how to make permanent adjustments to the monitor. Direction is given for adjustment 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. 4-1-1 Before Making Adjustments 4-1-1 (a) ORIENTATION When servicing, always face the monitor to the east. 4-1-1 (b) MAGNETIC FIELDS Whenever possible, use magnetic field isolation equipment such as a Helmholtz field to surround the monitor. If a Helmholtz field is not available, frequently degauss the unit under test. Caution: Other electrical equipment may cause external magnetic fields which may interfere with monitor performance. Use an external degaussing coil to limit magnetic build up on the monitor. If an external degaussing coil is not available, use the internal degaussing circuit. However, do not use the internal degaussing circuit more than once per 30 minutes. 4-1-1 (c) WARM-UP TIME The monitor must be on for 30 minutes before starting alignment. Warm-up time is especially critical in color temperature and white balance adjustments. 4-1-1 (d) SIGNAL Analog, 0.7 Vp-p positive at 75 ohm, internal termination Sync: Separate/Composite (TTL level negative/positive) Sync-on-Green: Composite sync 0.3 Vp-p negative (Video 0.7 Vp-p positive) 4-1-1 (e) SCANNING FREQUENCY Horizontal: 30 kHz to 115 kHz (Automatic) Vertical: 50 Hz to 160 Hz (Automatic) Unless otherwise specified, adjust at the 1024 x 768 mode (H: 68 kHz, V: 85 Hz) signals. Refer to Table 2-1 on pages 2-2 and 2-3. 4-1-1 (f) HIGH VOLTAGE ADJUSTMENT Signal: 1024 x 768 mode (68 kHz/85 Hz) Display image: Full white Contrast: Maximum Brightness: Maximum Limit: 27.3 kV ± 0.5 kV (17У: 26 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 Softjig. 4-1-1 (g) G2 (SCREEN) VOLTAGE ADJUSTMENT Signal: 1024 x 768 mode (68 kHz/85 Hz) Display image: Full white Contrast: Maximum Brightness: Maximum Adjust the Screen VR of the FBT so that the G2 (Screen) Voltage for Toshiba it is 540 V ± 10 V. 4-1-1 (h) CENTER RASTER Adjust VR401 so that the back raster comes to the center when you apply a signal of 91 kHz/85 Hz. PG17H* G2 PG19S* PG19R* G2 SDD 525V MEC 560V TOSHIBA 635V SDD 530V PG17**/PG19**/PG21** 4-1 4 Alignment and Adjustments 4-1-1 (i) BRIGHTNESS AND CONTRAST Unless otherwise specified, adjust control volumes: Brightness: Maximum Contrast: Maximum 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 gener

File name PG17HS9U_COVER.pdf

COLOR MONITOR PG17H*/PG17IS PG19LS/PG19LO/PG19HS/ PG19IS/PG19S*/PG19R* PG21** SERVICE COLOR MONITOR Manual 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. Schematic Diagrams

File name PG17HS9U_SCHEMA.pdf

10 Schematic Diagrams 10-1 Power Part Schematic Diagram R662 Q663 1 C603 34 CN604 SW6 10-1 PG17**/PG19**/PG21** 10 Schematic Diagrams CSE980B, CSE988B S5 ~33K 33~35K 35~37K 37~40K 40~46K 46~50K 50~55K 55~59K 59~65K 65~68K 68~70K 70~76K 76~78K 78~81K 81~85K 85~96K H L L L H L H H H L L L L L L L S4 H H H L H H L L L L L L L L L L S3 H H H H L L L L L L L L L L L L S2 H L L H L H H H L H H H L H L L S1 H L L H L L H L H L H H H L H L ~33K 33~35K 35~37K 37~40K 40~46K 46~50K 50~52K 52~55K 55~59K 59~65K 65~68K 68~70K 70~76K 76~78K 78~81K 81~85K 85~96K H L L L H H H H H H L L L L L L L CSE780B, CSE788B S5 S4 H H H L H L L L L L L L L L L L L S3 H H H H L L L L L L L L L L L L L S2 L L L H L H H H H L H H H L L L L S1 H H H H L H H H L H L H H H H H L 1 544 V (IC601, #1) CH1 P-P = 544 V CH1 RMS = 332.4 V CSE9839, CSE9829 S5 ~33K 33~35K 35~37K 37~40K 40~46K 46~50K 50~55K 55~59K 59~65K 65~68K 68~70K 70~76K 76~78K 78~81K 81~85K 85~96K H L L L H H H H H L L L L L L L S4 H H H L H L L L L L L L L L L L S3 H H H H L L L L L L L L L L L L S2 H L L H L H H H L H H H L H L L S1 H H H H L H H L H L H H H L H L ~33K 33~35K 35~37K 37~40K 40~46K 46~50K 50~55K 55~59K 59~65K 65~68K 68~70K 70~76K 76~78K 78~81K 81~85K 85~96K H L L L H L H H H L L L L L L L CSE7839, CSE7829 S5 S4 H H H L H H L L L L L L L L L L S3 H H H H L L L L L L L L L L L L S2 H L L H L H H H L H H H L L L L S1 H H H H L L H L H L H H H H H L PG17**/PG19**/PG21** 10-2 10 Schematic Diagrams 10-2 Micom Part Schematic Diagram 15 16 10-3 PG17**/PG19**/PG21** 10 Schematic Diagrams Table 10-1. IC201 (ST72E75) pin # pin # MODES 31 kHz 5.05 0 2.18 3.84 NC 2.32 0 NC GND 5.05 5 5 5 5 5 5 NC 4.73 NC 0 0.6 68 kHz 5.05 0 2.18 4.12 NC 2.32 0 NC GND 5.05 5 5 5 5 0 5 NC 4.62 NC 0 0.36 91 kHz 5.05 0 2.18 4.23 NC 2.31 0 NC GND 5.04 5 5 5 5 5 5 NC 4.63 NC 0 0.46 MODES 31 kHz 5 GND 4.06 5 0 5 5 5 5 0 2.34 2.22 0 12 12 12 12 12 5 GND 2.05 68 kHz 5.03 GND 2.75 5 0 5 5 5 5 0 2.33 2.22 0 0 0 12 12 0 5 GND 2.62 91 kHz 5.03 GND 3.77 5 0 5 5 5 5 0 2.28 2.24 0 0 0 0 0 0 5 GND 2.62 15 3.42 V (IC201, #33) 16 3.16 V (IC201, #32) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 CH1 P-P = 3.42 V CH1 RMS = 2.500 V CH1 P-P = 3.16 V CH1 RMS = 2.560 V Unit: Vrms Table 10-2. IC251 (SAM9222G) pin # pin # MODES 31 kHz 0.61 0 0.17 4.83 3.28 6.41 4.01 1.55 1.55 3.37 GND 0 8.05 8.09 2.74 3.27 68 kHz 0.36 0 0.16 4.82 2.69 6.41 4.0 3.39 3.39 3.3 GND 0 8.04 8.03 2.83 3.26 91 kHz 0.46 0 0.17 4.82 2.31 6.4 3.99 4.5 4.5 3.29 GND 0 8.04 8.0 2.78 3.24 MODES 31 kHz GND 5.56 GND 5.46 8.15 3.56 3.56 3.16 2.02 5.06 GND 3.63 12.02 5.03 5.03 5.04 68 kHz GND 5.54 GND 5.24 8.16 3.56 3.56 3.05 2.01 5.11 GND 2.49 12.02 5.03 5.03 5.03 91 kHz GND 5.54 GND 5.24 8.16 3.56 3.56 3.05 2.01 5.38 GND 3.69 12.02 5.03 5.03 5.03 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Unit: Vrms PG17**/PG19**/PG21** 10-4 10 Schematic Diag

File name PG17HS9U_TROUBLE.pdf

5 Troubleshooting 5-1 Parts Level Troubleshooting Notes: 1. If a picture does not appear, fully rotate the brightness and contrast controls clockwise and reinspect. 2. Check the following circuits. · No raster appears: Power circuit, Horizontal output circuit, H/V control circuit, and H/V 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 Check and replace FG601, D601, IC661, IC662. Yes WAVEFORMS 1 544 V (IC601, #1) Repeating start? Check and replace D601, D604, D663, Q632, and Q664. No CH1 P-P = 544 V CH1 RMS = 332.4 V 1 IC601 Pin 1 waveform is right? No Check and replace IC601, IC602, IC604. Yes IC602 and IC604 are right? Yes Normal operation No Replace Main board. No Replace parts and verify voltages. Yes Verify voltages. Yes Done. PG17**/PG19**/PG21** 5-1 5 Troubleshooting 5-1-2 DPMS Failure Check signal source H/V sync video level. Make No H/V sync (power off mode) LED blinks No Check IC201 Pin 39. Yes +12 V line off No Check IC201 Pin 9. Yes Q632 Base driving voltage exists? No Check IC201 Pin 10. Check and replace Q632. Yes Done 5-2 PG17**/PG19**/PG21** 5 Troubleshooting 5-1-3 H_Deflection Failure IC402 Pin 6 waveform is right? No 1. Check R401, +12 V line. 2. Check IC402 Pins 6~5, 7~6. 3. Replace IC402. WAVEFORMS 2 10.96 V (IC402, #6) 2 Yes 3 Q403 source waveform is right? Yes No Check D407, D408, Q403, R436 and R438, +210 V line. CH1 P-P = 10.96 V CH1 RMS = 6.180 V 3 230 V (Q405, Source) 4 5 Q404 gate, drain waveforms are right? Yes No Check Q404, R415. Check +25 V line. CH1 P-P = 230 V CH1 RMS = 150.1 V 6 7 Q405 base, collector waveforms are right? Yes IC261 Pin 4 is high? No Check and replace D410 and Q405. Check DY connector connection. 4 11.6 V (Q404, Gate) No Replace IC261. CH1 P-P = 11.6 V CH1 RMS = 6.944 V 5 54 V (Q404, Drain) Yes Check some parts around Q263. CH1 P-P = 54 V CH1 RMS = 22.44 V 8 IC261 Pin 26 waveform is right? Yes Check some parts around Q261 and Q262. No 6 18.6 V (Q405, Base) Check some parts around IC261. CH1 P-P = 55.2 V CH1 RMS = 9.52 V 8 12.08 V (IC261, #26) 7 1.216 kV (Q405, Collector) CH1 P-P = 12.08 V CH1 RMS = 7.396 V CH1 P-P = 1.216 kV CH1 RMS = 316 V PG17**/PG19**/PG21** 5-3 5 Troubleshooting 5-1-4 S Correction Failure Check S1 ~ S5 signal. S1~S5 signals are right at each frequency block? Yes Check and replace C430, C431, C433, C434, C435, C437 C441, C453, C454, C455, C456, C457, Q409~Q413, Q451~Q455, Q456~Q460 . No Check and replace IC201. 5-1-5 H_Lin. Failure IC201 Pin 21 voltage varies with different H_Lin. DAC values? Yes IC403 Pin 7, 8 voltage varies with different H_Lin. DAC values? Yes Check L403. No Check +12 V line. Check some parts around IC403. No Replace IC201. 5-1-6 Invariable H_Size IC261 Pin 28 voltage varies with different H_Size DAC values? Yes IC401 Pin 6 output duty varies with different H_Size