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I will definitely be back for more information when I need it.
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The service manual when downloaded and printed out was clear and easy to read. I would have liked to have been able to enlarge some details, but this was not possible as the file permissions did not allow this. The service was very good. The time taken from placing my order to downloading the document was only a few minutes.
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The manual is useful for trouble shooting for an old instrument. It saved money,and let me enjoy DIY.
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Perfect source of information for replacing the HDD and performing general diagnostics.
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Perfect source of information for replacing the HDD and performing general diagnostics.
�
Good Example
VOLT/DIV : 100mV TIME/DIV : 1ms 100mV 0V
�
Incorrect Examples (Fundamental wave appears)
VOLT/DIV : 1V TIME/DIV : 2ms 0V
low tracking gain
�
Incorrent Examples (DC level changes more than on adjusted waveform)
VOLT/DIV : 100mV TIME/DIV : 2ms
VOLT/DIV : 1V TIME/DIV : 2ms 0V
200mV
high tracking gain (high fundamental wave than for low gain)
0V
low focus gain
[MAIN BOARD]
VOLT/DIV : 100mV TIME/DIV : 2ms
TP(FE)
75mV 0V
TP(VC)
high focus gain
TP(TE)
5. 6. 7.
Connect an oscilloscope between TP (TE) and TP (VC). Insert disc (YEDS-18) and press the CD ^ button. Check that the waveform is as shown in the figure below. (tracking waveform)
VOLT/DIV : 1V TIME/DIV : 2ms
TP(RF)
Osilloscope (DC range)
0V
TP(FE) TP(TE) TP(VC)
+ �
� 16 �
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