tm 11-6625-2495-14&p technical manual operator's - F6FZK - Free
tm 11-6625-2495-14&p technical manual operator's - F6FZK - Free
tm 11-6625-2495-14&p technical manual operator's - F6FZK - Free
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MANUAL BACKDATING CHANGES<br />
This <strong>manual</strong> backdating sheet makes this <strong>manual</strong> applicable to earlier instruments. Instrumentcomponent<br />
values that differ from those in the <strong>manual</strong>, yet are not listed in the backdating sheet,<br />
should be replaced using the part number given in the <strong>manual</strong>.<br />
Instrument Serial Prefix Make Manual Changes<br />
630-01950 and below 1 thru 6<br />
702-02675 and below 2 thru 6<br />
809-03350 and below 3 thru 6<br />
809-03475 and below 4 thru 6<br />
CHANGE #1 Replace R16 and R17 with pieces of wire.<br />
CHANGE #2 Replace A12R27 with a piece of wire.<br />
Change A12R25 to 2 kÒ ± 10% 1/2 W.<br />
Replace A12R28 with a piece of wire.<br />
Change A12R26 to 5 kÒ ± 10% 1/2 W.<br />
CHANGE #3 Replace A15R28 and A16R28 with pieces of wire.<br />
CHANGE #4 Replace A13R25 with a piece of wire.<br />
Model 3300A<br />
Instrument Serial Prefix Make Manual Changes<br />
939-04925 and below 5, 6<br />
939-04950 and below 6<br />
CHANGE #5 For instruments with serial number 939-04925 and below, change the following part numbers:<br />
J1 should be 1251-0148.<br />
W1 should be 8120-0078.<br />
Rear Panel should be 03300-00202.<br />
These parts are not directly interchangeable with the ones listed in Table 7-1. If any one is changed, all should be<br />
changed.<br />
CHANGE #6 (RECOMMENDED INSTRUMENT CHANGE)<br />
Solder a short jumper wire between the shield ground ( © in this <strong>manual</strong> and ∇ in older <strong>manual</strong>s) and power line<br />
ground · . This connection should be made on the terminal strip on the inside of the rear panel. This connection<br />
will prevent the instrument shafts and set screws in the control knobs from being above power line ground.<br />
Instruments with serial number 939-04950 and below did not have this change (see note 1).<br />
NOTE 1<br />
Some instruments between serial number 939-04851 and 939-04950 already have this change. Check your<br />
instrument to see if it has this change.