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I had been looking for a Manual for my CS2150 for quite a while -- in fact I had just about given up. I saw this site and decided to download the Manual. When I Received it by Email I was really pleased with what I got, with the result that My Kenwood 'Scope is now 100% repaired and working well. As an AV Serviceman, you need a good 'scope, and thanks to this site, and the Service Manual, I have been able to repair it. The Manual was a copy of the Factory Original and the copy was very clear, especially in the area of the Circuit Schematics, where You really need to be sure of what You are looking at.
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SECTION 4 ADJUSTMENT Please refer to "HR-XVC29SUS No.YD052" about this section except a written item.
4.1 Electrical adjustment (HR-XVC29SUM ONLY) Note: The following adjustment procedures are not only necessary after replacement of consumable mechanical parts or board assemblies, but are also provided as references to be referred to when servicing the electrical circuitry. In case of trouble with the electrical circuitry, always begin a service by identifying the defective points by using the measuring instruments as described in the following electrical adjustment procedures. After this, proceed to the repair, replacement and/or adjustment. If the required measuring instruments are not available in the field, do not change the adjustment parts (variable resistor, etc.) carelessly. 4.1.1 Syscon circuit Notes: � When perform this adjustment, remove the Mechanism assembly. 4.1.1.1 Timer clock
(A1) (B) (C) (D1) (D2) (D3) � � � � � � No signal EE Frequency counter IC3001 pin 29 IC3001 pin 31 IC3001 pin 32
Signal Mode Equipment Measuring point
(D4) � IC3001 pin 25 Adjustment part (F) � C3018 (TIMER CLOCK) Specified value (G1) � 1024.008 ± 0.001 Hz (976.554 ± 0.001 µsec)
(1) Connect the frequency counter to the measuring point (D1). (2) Connect the short wire between the short point (D2) and (D3) to GND. (3) Short the point (D4) and GND in order to reset the microprocessor of the Syscon. (4) Disconnect the short wire between the short point (D3) and GND. (5) Adjust the Adjustment part (F) so that the output frequency becomes the specified value (G).
SECTION 5 TROUBLESHOOTING Please refer to "HR-XVC29SUS No.YD052" about this section.
1-4 (No.YD071)
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