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I am so happy found this site as it consists of so many Manuls and easy to aquire. This onei s exactly what I wanted and much more as it has info on not only how to use the tuner but how to repair it as well. I will come here 1st before purchasing else where! Thanks owner-manual.com!
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Top class product, I printed it out on A3 paper and it is clear and very easy to follow.
Cheaper than buying a new radio!
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is part of the manual is very useful for repairing
Here are circuit diagrams
if there is damage, I recommend using this part of the
a complete list of circuit boards and components
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Hello.
This paper enable me, to bring this lovley Scope into Function.
Without this Page, i have no cance to make this finish.
Hans M. Knoll Germany
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I used for first time this the wheat and am very thanked
4-8 Trouble Shooting Chart Microphone not working
No voice from Microphone
GO YES
Check point: the Q503 on power board Observe: check the collector terminal voltage is over+0v7
Solution: replace the transistor
NO
Check point: Q503 on power board Observe: check the collector
YES Solution: Replace Q503
terminal is short circuit to ground
NO NO
Solution: check the +5V supply Circuit replaces any defected components
Check the +5V is presented
YES
Check point: Microphone input Observe: check if the any signal presenting at pin7 of CON601 by
YES
Solution: replace U601 on echo board if no signal output from pin 15
NO NO
Check point: VA+ and VA- on microphone board Observe: heck if the supply
Solution: check the connector between echo board and microphone
voltage is +/-10V
YES
Solution: replace the U401 on microphone board
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