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SERVICE MANUAL
4.
5.
5.1.
5.2.
6.
7.
CHAPTER 5 MONITOR REPAIR AND ADJUSTMENT (MODEL CT-1450) .............. 5-1
1.
Safety Precautions ................................................................................................... 5-1
2.
Theory of Operation ................................................................................................. 5-3
2.1.
Video Process ............................................................................................................ 5-3
2.2.
Video Amplifier........................................................................................................... 5-3
2.3.
Vertical Circuitry ......................................................................................................... 5-4
2.4.
Horizontal Sync and Drive .......................................................................................... 5-4
2.5.
Horizontal Output Transistor ....................................................................................... 5-5
2.6.
High Voltage and Focus ............................................................................................. 5-5
3.
Adjustment and Servicing......................................................................................... 5-6
3.1.
Test Pattern................................................................................................................ 5-6
3.2.
Measurement Conditions ............................................................................................ 5-7
3.2.1.
3.2.2.
3.3.
Adjustments ............................................................................................................... 5-8
3.3.1.
3.3.2.
3.3.3.
3.3.4.
3.3.5.
3.3.6.
3.3.6.1.
3.3.6.2.
4.
Troubleshooting ..................................................................................................... 5-13
5.
Control Parts Location............................................................................................ 5-14
6.
Monitor Block Diagram ........................................................................................... 5-15
1.
1.1.
1.2.
1.3.
Display Dimension Measurement.................................................................. 5-7
Raster Centering & Tilt Adjustment (see Fig. 5.3) ......................................... 5-7
B+ Voltage Adjustments: None required. ..................................................... 5-8
Horizontal Adjustments................................................................................. 5-8
Vertical Adjustments (see Fig. 5.5) ............................................................... 5-9
Brightness & Contrast ................................................................................... 5-9
Focus Adjustment......................................................................................... 5-9
Raster Geometry Adjustments .................................................................... 5-10
Pin Cushion/Barrel Correction (top, bottom and sides) Adjustment........ 5-10
Trapezoidal Correction (corners) Adjustment ........................................ 5-12
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  • brian aaron Jan 27, 2017 03:48:
    1-26-2017
    ​I have a brother dp 540cj and it has a built in diskette drive.
    I have a ibm thinkpad latop. I connected a Memorex external usb floppy drive to the ibm thinkpad laptop. i'm copying 3 files from the ibm thinkpap (notepad) to the square 1.44 mb diskette. no problem, the 3 files were copied to the diskette.
    ​I turn on the brother dp 540cj, select file manager, insert the square diskette. the brother dp 540cj open only the file names on the disk. I try to open word text on either of the 3 files on the disk and the brother dp 540cj don't open the word text in any of the 3 files. I have been trying for several days to open the word text on the files using the brother dp 540cj and don't have any further instructio​ns for this problem. I tried saving the file names to all coding - Unicode, ansi utf-8 and can't fix the electronic problem.
    m​y email address is snowwash@j​uno.com