Inspect all protective devices such as nonmetallic Components identified by on schematics and parts control knobs, insulating materials, cabinet backs, lists must be sealed by a soldering iron after adjustment and compartment covers or shields, replacement and adjustment. isolation resistor-capacitor networks, mechanical insulators, etc. AQ17LS...
“anti-static” a carpeted floor can generate enough static can generate electrical charges sufficient to damage electricity to damage an ESD. ESDs. Indicates ESDs on the Schematic Diagram in this manual. AQ17LS...
Green Blue H/V Sync. Sense 0 GND (DDC) Green GND-R GND-G GND-G Sense 1 GND-B Reserved Reserved (N-C) Blue GND-Sync./Self-raster Sense 2 DDC Data V-Sync. H-Sync. GND-B V-Sync. DDC Clock H-Sync. Figure 2-1. Male Type Figure 2-2. Male Type AQ17LS...
B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch AQ17LS...
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the AQ17LS 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.
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7. Place the Video PCB on a flat, level surface the monitor, be sure to place the CRT that is protected from static electricity. face downward on a protective pad. 3-2 Reassembly Reassembly procedures are in the reverse order of Disassembly procedures. AQ17LS...
2. Color analyzer, or any luminance Horizontal: 30 kHz to 68 kHz (Automatic) measurement equipment Vertical: 50 Hz to 160 Hz (Automatic) Unless otherwise specified, adjust at the 1024 x 768 mode (68 kHz/85 Hz) signal. Refer to Table 2-1 on page 2-3. AQ17LS...
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And, adjust other 7 factory modes “SIZE B+” with Only check with below table. “H - SIZE” values fixed like this table. Table 4-1 Table 4-2 CRT type Screen Voltage MODE H -SIZE ± M41QAQ261X011 500V VGA 2 ± M41LH507XX443 630V VGA3 ± M41EJB523X170 Others 570V AQ17LS...
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4-2-8 Parallelogram Adjustment CONDITIONS Scanning Frequency: 68 kHz/85 Hz Display image: Crosshatch pattern Brightness: Maximum Contrast: Maximum Use control bar after selecting “PARALLEL” in left menu to make the image area rectangular. 4 mm Figure 4-6. Parallelogram AQ17LS...
4. Use control bar after selecting “RED CONDITIONS CUTOFF” in left menu to 0.283 ± 0.015 Scanning frequency: 68 kHz/85 Hz * If color values would not be matched desirable values, repeat sequence 3 and 4 after readjusting “GREEN CUTOFF” control a little different. AQ17LS...
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= 0.066 ± 0.015 (For 9300K color adjustment: x = 0.283 ± 0.02, y = 0.298 ± 0.02) 5. When you have the PCMs properly adjusted, carefully glue them together to prevent their movement during shipping. Figure 4-10. Luminance Uniformity Check Locations AQ17LS...
Check and replace D614, IC601, IC601 Pin 1 waveform is right? Q602, and ZD601. Check and replace IC201, IC301, C622 Voltage is 13 V ± 0.5V? IC401, Q402, Q404, IC603, Q609, and Q611. Operate normally? Replace Main board. Verify voltages. Done. AQ17LS...
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Make No H/V Sync. (power off mode) LED blinks? Check IC201 Pin 40. CH1 P-P = 100 V CH1 RMS = 325.8 V +12 V line off? Check IC201 Pin 6. IC601 Pin 1 output Refer to 5-1-1 No Power Supply. voltage exists? Done AQ17LS...
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5-1-4 S Correction Failure Check S1 ~ S4 signal. S1~S4 signals are right at each CH1 P-P = 20.0 V CH1 RMS = 46.80V Check and replace IC201. frequency block? Check and replace Q404, Q409, Q410, Q411, Q414, Q415, and Q416. AQ17LS...
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B+ offset Check and replace IC201. DAC values? 200 V (Q408, Collector) Q408 Collector waveform is Check and replace Q405, right? Q406, Q407, and Q408. CH1 P-P = 200V CH1 RMS = 387.2V Check some parts around D409 and L401. AQ17LS...
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5-1-10 Tilt Failure Check tilt connector connection IC201 Pin 20 output duty varies Check and replace IC201. with different DAC values? IC603 Pin 3 output varies with Check and replace IC603. different DAC values? Check and replace Q301 and Q302. AQ17LS...
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Check DY connector connection. CH1 P-P = 10.0 V CH1 RMS = 5.06 V 5-1-12 V Size or Position Variation Failure IC401 Pin 23 output varies with Check and replace IC201 and IC401. different DAC values? Check and replace IC301. AQ17LS...
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CH1 P-P = 50.0 V CH1 RMS = 73.7V Check CN102. T501 Pin 8 output exists? Check and replace T501. IC201 Pin 26 output exists and Check and replace IC201. varies with different patterns? Done AQ17LS...
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T502 Pin 1 output is right? Replace the T502. CH1 P-P = 50.0V CH1 RMS = 75.6V Check the connection between FBT 100 V (T502, #1) Focus pin and CRT Socket PCB. CH1 P-P = 100V CH1 RMS = 124.0V AQ17LS...
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CH1 P-P = 1.00V CH1 RMS = 2.792V Cathode DC levels are right? Check and replace IC102. 20.0V (IC103, #1, 2, 3) Check G2 wire, CRT Socket board G2 voltage is right? and FBT. CH1 P-P = 20.0V CH1 RMS = 40.52V Change CRT. Done. AQ17LS...
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IC201 Pin 13 and 14 inputs Check C202, C203 and X201. are right? CH1 P-P = 1.00 V CH1 RMS = 2.108V IC201 Pin 18 input is right? Check Q608 and ZD602. All in/output values are right? Replace IC201. Done 5-10 AQ17LS...
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IC104 Pin 12, 13 and 14 Check and replace IC104. 1.00 V (IC101, #18,19,20) outputs are right? IC101 Pin 18, 19 and 20 Check and replace IC101. outputs are right? CH1 P-P = 1.00V CH1 RMS = 2.580V Check and replace IC103. Done AQ17LS 5-11...
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S/W? Check IC201. 5-1-20 Degaussing Failure Check degaussing connector. RL601 operation is right? Check D-coil and TH601. Q601 base input is right? Check and replace Q601. IC201 Pin 4 output is right? Check and replace IC201. Done 5-12 AQ17LS...
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 supply secondary voltages. Video failure? Check Video board. Check and replace IC201. Done AQ17LS 5-13...
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Check IC101 Pin 14, 15 and 16. on all cathodes? Check IC102. G2 voltage is right? Check D520. Heater voltage is right? Check D608, Q604 and T601. G1 voltage is right? Check D504 and T501. Replace CRT. Done 5-14 AQ17LS...
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CH1 RMS = 28.33V 20.00V (CRT Socket, G1) V_FLB pulse is on Check Q502. Collector of Q502? Does approve the Vertical pulse CH1 P-P = 20.0V CH1 RMS = 66.68V Check CN102 and CN201. on the CRT Socket G1? Done AQ17LS 5-15...
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3 of CN202. Signals are right? Check Video Cable Signals at Pin 30 and 31 of Check IC201. IC201 are right? Signals at Pin 1 and 2 of Check IC401 IC401 are right? Check circuits on Main board. Done 5-16 AQ17LS...
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5 Troubleshooting 5-2-6 Misconvergence Try readjusting convergence. The convergence is now Done within spec.? Readjust convergence. The convergence is now Done within spec.? Change CRT and readjust convergence. Done AQ17LS 5-17...
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Refer to 5-1-15 Dynamic Dynamic focus circuit is right? Focus Failure. Replace the CRT and verify focus. 5-2-8 Purity Failure Degaussing Purity is right? Done Degaussing circuit is right? Refer to 5-1-20 Degaussing Failure. Replace CRT and verify purity. 5-18 AQ17LS...