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. PN19MT/MO/IO x178/19P2...
“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. PN19MT/MO/IO x178/19P2...
Green Blue H/V Sync. Sense 0 GND (DDC) Green GND-R GND-G GND-G Sense 1 GND-B Reserved Volt 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 PN19MT/MO/IO x178/19P2...
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 PN19MT/MO/IO x178/19P2...
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the PN19MT/MO/IO/x178/19P2 monitors. WARNING: This monitor contains electrostatically sensitive devices. Use with caution when handling these components. 3-1 Disassembly (PN19M*/PN19IO) Cautions:1. Disconnect the monitor from the power source before disassembly.
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Main . 5. Using the jig, release the snaps (2) connecting the Front Cover and the PCB then lift up the Bottom to separate the two Shield. 3-2 Reassembly Reassembly procedures are in the reverse order of Disassembly procedures. PN19MT/MO/IO x178/19P2...
2. Color analyzer, or any luminance 4-1-1 (e) SCANNING FREQUENCY measurement equipment Horizontal: 30 kHz ~ 68 kHz (Automatic) Vertical: 50 Hz ~ 160 Hz (Automatic) Unless otherwise specified, adjust at the 1024 x 768 mode (68 kHz/85 Hz) signal. PN19MT/MO/IO x178/19P2...
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5V DC ADAPTOR 3-WIRE CABLE PARALLEL CABLE SIGNAL GENERATOR Figure 4-1. Setup 1, With Signal Generator MONITOR INTERFACE BOARD VER. 2.0 3-WIRE CABLE 5V DC ADAPTOR SIGNAL CABLE PARALLEL CABLE D-SUB CONNECTOR Figure 4-2. Setup 2, Without Signal Generator PN19MT/MO/IO x178/19P2...
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352 mm with OSD “H-SIZE” fixed “39”. Contrast: Maximum (Tolerance: ±3 mm.) Brightness: Maximum Limit: Refer to Table 4-1 Adjust the screen VR of the FBT to match the following voltage. Table 4-1 PN19M* SDI / TOSHIBA PN19I* 530V PN19MT/MO/IO x178/19P2...
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4-2-13 To Delete the User Mode Data Use control bar after selecting “PARALLEL” in To delete the adjustment data from the user left menu to make the image area rectangular. modes, click “@4: USER DELETE” in right ment. 4 mm Figure 4-6. Parallelogram PN19MT/MO/IO x178/19P2...
4. Use control bar after selecting “RED CUTOFF” in left menu to 0.283 ± 0.015 CONDITIONS * If color values would not be matched desirable Scanning frequency: 68 kHz/85 Hz values, repeat sequence 3 and 4 after readjusting “GREEN CUTOFF” control a little different. PN19MT/MO/IO x178/19P2...
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(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 PN19MT/MO/IO x178/19P2...
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4 Alignment and Adjustments Memo PN19MT/MO/IO x178/19P2...
Check and replace IC601 Pin 1 waveform is right? D620, IC601 and IC701. Check and replace ZD705, ZD706, D702, IC701 Pin 8 Voltage is right? and also check the secondary diodes. Operate normally? Replace Main board. Verify voltages. Done. PN19MT/MO/IO x178/19P2...
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H/V Sync. video level. Make No H/V Sync. (power off mode) LED blinks? Check IC201 Pin 39. Check IC201 Pin 10. Q620 Base drive voltage? Check and Replace Q403. Check IC201 Pin 9. Is there 12 volt? Check IC651. Done PN19MT/MO/IO x178/19P2...
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Check DY connector connection. Check some parts around CH1 P-P = 66.4V CH1 RMS = 25.84V IC261 and Q262. 1.24kV (Q402, Collector) CH1 P-P = 1.24kV CH1 RMS = 302V 11.0V (IC250, #26) CH1 RMS = 11.0V PN19MT/MO/IO x178/19P2...
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IC201 Pin 20 voltage varies with Check and replace IC201. 13.6 V (IC402, #6) different B_Out DAC values? IC402 Pin6 Voltage Varies with Check and replace IC402. different H_Lin. DAC Values? CH1 P-P = 13.6V CH1 RMS = 9.02V PN19MT/MO/IO x178/19P2...
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WAVEFORMS IC250 Pin 24 output exists? Check and replace IC250. IC250, #24 CH1 P-P = 1.00V CH1 RMS = 3.008 V 5-1-9 Para. or Pin Balance Failure IC250 Pin 24 output varies with different DAC values? Replace IC250. PN19MT/MO/IO x178/19P2...
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IC301 Pin 1 output exists? Check and replace R301. CH1 P-P = 55.2 V CH1 RMS = 8.04 V Check and replace some parts IC301 Pin 6 output exists? around R312, R316 and IC301. Check V_DY connector connection. PN19MT/MO/IO x178/19P2...
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Check +12V line. Check and replace IC501, Q521, Q504 Gate driving pulse exists? 12.2 V (Q504, Gate) Q502, Q503, and Q504. Adjust the H/V Value using the jig program. CH1 P-P = 12.2V CH1 RMS = 5.30V Done PN19MT/MO/IO x178/19P2...
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CH1 P-P = 960mV CH1 RMS = 6.043V 960mV (IC250, #11) Some parts around T502 is right? Replace failed part. CH1 P-P = 960mV CH1 RMS = 6.043V Check the connection between FBT Focus pin 13 and CRT Socket PCB. PN19MT/MO/IO x178/19P2...
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46.4V (IC105, #1, 3, 5) Check +80V line. Cathode DC levels are right? Check and replace IC104. CH1 P-P = 46.4V CH1 RMS = 47.84V Check G2 wire, CRT Socket board G2 voltage is right? and FBT. Change CRT. Done. PN19MT/MO/IO x178/19P2...
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IC201 Pin 13 and 14 inputs Check C203, C204 and X201. are right? CH1 P-P = 24.4 V CH1 RMS = 6.32V IC201 Pin 18 input is right? Check IC650. All in/output values are right? Replace IC201. Done 5-10 PN19MT/MO/IO x178/19P2...
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Check and replace Q103. IC104 Pin 7 and 8 inputs are right? Check IC201 Pin 41 and 42. IC104 Pin 19, 20, 21, and 22 Check and replace IC104. outputs are right? Check and replace IC104. Done PN19MT/MO/IO 5-11 x178/19P2...
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Check D-coil and TH601. Q601 base input is right? Check and replace Q601. Check and replace IC201. IC201 Pin 40 output is right? Check the Function Key. R236 and R604 is right? Check and replace R236 and R604. Done 5-12 PN19MT/MO/IO x178/19P2...
Scan failure? secondary voltages. (Refer to 5-1-3 and 5-1-11) Check the high Voltage system. High Voltage failure? (Refer to 5-1-13) Check Video board. Video failure? (Refer to 5-1-16) Check and replace IC201. Done PN19MT/MO/IO 5-13 x178/19P2...
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Check IC101 Pin 19, 20 and 21. Proper DC voltage is Check QB02, QG02, QR02, QB03, on all cathodes? QG03, and QR03. Check G2 wire, G2 voltage is right? G2 Control Volume and FBT. Replace CRT. Done 5-14 PN19MT/MO/IO x178/19P2...
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G2 Control Volume and FBT. Blank pulse is on IC104 Pin 17 of Check D102 and Q103. video board? Check CN102 connector Ass’y.. Blank padestal is on Check some parts around IC104. IC104 Pin 25, 28, 30? Done PN19MT/MO/IO 5-15 x178/19P2...
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Check Video Cable. Signals at Pin 3 and 4 of Check Wire and connector. CN203 are right? Signals at Pin 30 and 31 of Check H_SYNC and V_SYNC. IC201 are right? Check circuits on Main board. Done 5-16 PN19MT/MO/IO x178/19P2...
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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 PN19MT/MO/IO 5-17 x178/19P2...
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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 PN19MT/MO/IO x178/19P2...
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6 Exploded View and Parts List 6-1 PN19MT PN19MT/MO/IO x178/19P2...
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6 Exploded View & Parts List 6-2 PN19MO/19P2 PN19MT/MO/IO x178/19P2...
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6 Exploded View & Parts List 6-3 PN19IO PN19MT/MO/IO x178/19P2...
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6 Exploded View & Parts List 6-4 x178 PN19MT/MO/IO x178/19P2...
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6 Exploded View and Parts List 6-1-1 Front Cover & CRT Ass’y (PN19MT) PN19MT/MO/IO x178/19P2...