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Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
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Excellent printing quality. A complete and very useful manual with all details.
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This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
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Mi spiace per non poter scrivere in inglese... ma sono veramente soddisfatto del servizio offerto. Grazie..!!
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The quality of this manual is good. It has all schematics and setup information for both the MDS-B3 and the MDS-B4. The scan quality is quite good, all pages are readable, This service manual also contains scans of the operating instructions from the User manual.
SECTION 2 ELECTRICAL ADJUSTMENTS
Equipment Use the following test equipment for alignment. � Oscilloscope dual trace, 10 MHz band or above with delay mode (use a 10 to 1 probe unless otherwise instructed.) � NTSC color bar generator � PAL color bar generator � DC power supply � Digital voltmeter � XT-61VE (TV tuner unit of XTL-610E) (XVM-61EX only) � Frequency counter Equipment Connections Make the test equipment connections as shown below (unless instructed otherwise) and perform the alignment. XVM-61EX :
NAVI INPUT (VIDEO) XT-61VE XVM-611EX
MONITOR SECTION
Voltage Adjustment Setting : DIMMER selector (S701) : HIGH BRIGHT dial (RV702) : Max. (light) VOL dial (RV301) : Max. Procedure : 1. Input the color bar (chroma off) signal from NTSC color bar generator and display on the monitor screen. 2. Connect the digital voltmeter to CL66 on the monitor main board. 3. Adjust RV401 (+5V) so that the digital voltmeter reads 5±0.1 V DC. 4. Connect the digital voltmeter to CL86 on the monitor main board. 5. Adjust RV601 (+9V) so that the digital voltmeter reads 8.5±0.1 V DC. Connection points : Monitor main board Refer to page 5. Alignment points : Monitor main board Refer to page 5. RGB Adjustment Procedure : 1. Input the color bar (chroma off) signal from NTSC color bar generator and display on the monitor screen. 2. Connect the digital voltmeter to CL151 on the monitor main board. 3. Adjust RV213 (OFFSET) so that the digital voltmeter reads 2.3±0.1 V DC. 4. Connect the oscilloscope to CL42 on the monitor main board. 5. Adjust RV212 (COM CUT) so that the lower black level is 6.2±0.05 V DC. 6. Adjust RV208 (COM DRIVE) so that the upper 100% white level is 9.2±0.05 V DC. 7. Repeat steps 5 & 6 until the items in the standards are satisfied. 8. Connect the oscilloscope to CL41 of the monitor main board. 9. Adjust RV207 (R DRIVE) so that the lower black level is 6.2±0.05 V DC. 10. Adjust RV202 (R CUT) so that the upper 100% white level is 9.2±0.05 V DC. 11. Repeat steps 9 & 10 until the items in the standards are satisfied. 12. Connect the oscilloscope to CL43 of the monitor main board. 13. Adjust RV209 (B DRIVE) so that the upper 100% white level is 6.1±0.05 V DC. 14. Adjust RV204 (B CUT) so that the upper 100% white level is 9.1±0.05 V DC. 15. Repeat steps 13 & 14 until the items in the standards are satisfied.
1 2 3 5 6 7 8 black level (8th step) 0V 4
color bar generator
VIDEO output (75 �)
MONITOR OUTPUT
XVM-6100 :
INPUT 1 (VIDEO) XA-601
color bar generator
MONITOR OUTPUT XVM-611
CONTROLLER VIDEO output (75 �) RM-X6100
white level (1st step)
Connection points : Monitor main board Refer to page 5. Alignment points : Monitor main board Refer to page 5.
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