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Bulova ACCUTRON QUARTZ 245 Technical Bulletin page 5

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245
<
to use
Replace
../'_--'
Proceed to Step 2 ...
*
NOTE:
It is imperative that the basic "step-by-step"
procedure be strictly adhered to beginning with
Step 1 and continuing through Step 5.
·1~
p_r_o_c_e_ed
__
to __
S_re_p_3_._ . .
~
necessary.
ratio
Replace Electronic
Circuit Board
Rate OKor regulate if necessary.
t---.oo!-t
Proceed to
Step 3
-:
Intermediate
Wheel steps (one
Remove cell from
move-
Proceed to
revolution).
Electronic
circuit,
ment and insert it into the
Step
5
ovement,
coil winding, and mechanical
meter cell well. Connect
eel (fig. 6)
",
portion OK.
meter to movement.
Fig. 5.
Intermediate Wheel does not
step.
:
With a power cell still in
Continue
I-
movement and none in
as
follows:
meter,
*
set meter at low am-
plitude. Place accessory
al-
ligator clips on electronic
module as shown
in
fig.
7.
uternatety
If Intermediate
Wheel
still
does
I
Proceed to Step
4...
I
g.8), Elec-
<
not
step,
problem is in the coil as-
sembly or mechanical
blockage.
Remove cell from
movement
ot flick,
and insert into
meter
well.
Con-
Proceed to
uit.
If Intermediate
Wheel steps
I
nect meter to movement. Fig. 5.
Step
5
I
-
Meter
pointer does
not
flue-
Meter pointer fluctuates.
iment
and
V
tuate. Replace coil
assembly.
See fig. 9. Intermediate
[)
cell well.
wheel
steps.
Proceed to
from Elec-
Meter pointer fluctuates
(see
fig.
Step
5
r at Low
r-,
9) but intermediate
wheel does
Remove blockage.
lnterrne-
iter to
not step. Coil assembly
OK.
Prob-
diate wheel
steps.
fig.5.
lem is caused by mechanical
blockage.
Meter Pointer should indicate
ap-
If
reading is above
2.5
ead
Micro-
proximately
1.5 microamps
low
uctuate,
and approximately
2.5 micro-
microamperes,
recheck
amps high during fluctuations.
mechanical
area
for bind
See fig. 9.
or
blockage.
Use clip to the
screwdriver
as
probe.
Fig. 7
Fig.S
Fig. 9
*
IMPORTANT:
The
meter
cell
well clip
must
make firm
con-
tact with the well
contact
button.
If
necessary,
slip
a
metal disc be-
tween the spring
and
contact
button.
DURING
P.C.
CHECK
DURING IMPULSE
o
o
5

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This manual is also suitable for:

Accutron quartz 246