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Page Title:
Section Il. CALIBRATION PROCEDURES |
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 adjust R115 until the correct indication is
position B, D, E, or F, the test set
obtained.
meter should indicate 40 scale divi-
sions
g. FUNCTION SWITCH settings and me-
ter indications with pushbutton 3 -- MUT.
(2) With the FUNCTION SWITCH in
COND. depressed should be as follows:
position C, the test set meter should
( 1 ) With the FUNCTION SWITCH in
indicate 20 scale divisions
Section Il. CALIBRATION PROCEDURES
A G E 6.3. Set the FUNCTION SWITCH to
RANGES B.
Perform the following calibration procedure
b. Insert a 6L6 electron tube in the OCTAL
if SHUNT control R127 is out of adjustment
test socket. Allow the tube to warm up for at
or is replaced.
least 5 minutes.
a. Set the FUNCTION SWITCH to A.
c . Depress pushbutton 1 -- LINE ADJ.
b . Depress pushbutton 1 -- LINE ADJ.
and vary the LINE ADJUST control until the
and vary the LINE ADJUST control until the
meter pointer indicates LINE TEST.
meter pointer indicates LINE TEST.
d. Depress pushbutton 3 -- MUT. COND.
c. Set the SHUNT control to 90.
and adjust the BIAS control until the meter
d. Connect two 12,000-ohm resistors (para
pointer indicates 120.
20b) in parallel between the cathode and the
e. Set the FUNCTION SWITCH to
p l a t e (pin 6 to pin 3) of the OCTAL test
RANGES C.
socket.
f. Depress pushbutton 3 -- MUT. COND.
e. Depress and hold pushbutton 3 -- MUT.
The meter pointer should indicate 60 scale
COND. The test set meter pointer should in-
divisions
dicate 0 divisions
(1) If the test set meter (TV-7/U only)
f. Turn the movable cap on the lower half
does not indicate 60 scale divisions
of R127 (fig. 2427) until the correct meter
connect the decade resistor in
indication (e above) is obtained.
parallel with R114.
g. Release pushbutton 3 -- MUT, COND.
(a) Adjust the decade resistor so that
and solder the movable cap to the casing of
t h e test set meter indicates 60
R127.
scale divisions
h. Recheck for the correct meter indication
(b) Solder a resistor of the correct
(e above).
value in parallel with R114.
(2) If the test set meter (except for the
TV-7/U) does not indicate 60 scale
a. Set the selectors and the controls to
adjust R114 until the
divisions
HS5-3481, BIAS 100, and FILAMENT VOLT-
correct indication is obtained.
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