[time-nuts] 10811 Repair (was warmup / bad batch)

Jack Hudler jack at hudler.org
Tue Jan 23 03:10:19 UTC 2007


Bruce,

	I just compared it the original scans and found no differences.

	Rick?

Jack

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On Behalf
Of Dr Bruce Griffiths
Sent: Monday, January 22, 2007 8:54 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] 10811 Repair (was warmup / bad batch)
  
Jack
Paragraph 8-96 states:
OUTPUT AMPLITUDE HIGH OR LOW. Many times this can be cured by the 
adjustment of R6 as
described in paragraph 5-14. If the correct amplitude cannot be obtained 
with this adjustment,
monitor the signal at Q6(C) with an oscilloscope and set R6 to obtain an 
amplitude of 2.8V p-p.
Then check Q5 and Q9 stages. If the R6 adjustment isn't effective, you 
should suspect the AGC
circuitry (Q3, CR4, CR5, C5, C6, R5, R6, R7, or Q1).

The only problem is that according to the schematic Q6 is part of the 
oven controller circuit.
Surely they mean Q2(C)??

Bruce

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