英文8d实例

2021年1月25日发(作者：扎希亚)
EIGHT-DISCIPLINE WORKSHEET
Customer Name

Model No. (Part#)
Description
Joyfame







DV3







Turning
the
power
OFF
after
very short
time
of power on.
DISCIPLINE 1

MEMBERS

Signature










XXXXXXX





DISCIPLINE 2 DESCRIBE THE PROBLEM (
問題描述
)

DA
TE
：
2007/1/31

Customer Joyfame received NG DV3 which was returned from the end user, it was reported
that the defective camera is automatically turning off after a very short time of power on, and the
sample has been offered to Chicony for analysis since January 18, 2007.

DISCIPLINE 3 CONTAINMENT PLAN (
圍堵計畫
)

DA
TE
：
2007/1/31
1. The products are out of store at the factory
2.
Before the new battery connector are phased in the factory, we will add a station to do camera
shaking test at the production line, in order to screen the defective products, if there is, all these
products will be held up and await for replacement when the new battery connector are introduced
to use.

DISCIPLINE 4 DESCRIBE THE POSSIBLE CAUSE (
原因描述
)

DA
TE
：
2007/1/31
Re-judgement.
A. For the battery
1. Turn
on
and
turn
off
test, sometimes
the camera can
not
turn
on,
and
even sometimes
it
is
automatically turning off after a very short time of power on.
2. Slide
open
the
battery
cover,
and
take
out
the
LI-ION
battery
,
use
a
multimeter
to
do
the
voltage test, the voltage of the battery is 4.05V
, recharge it in the battery charger until the indicator
is on white, which indicates the charge is completed, test its voltage again and find the voltage is
4.22V
, which meets the request that the voltage of the battery should be not less than 4.2V after
charge.
3. Put the charged battery back into the returned camera and do the same test, the duplicate result
appear once again.
4. Take out the LI- ION battery and put it into another qualified Camera of DV3 model, and then
do the same test, we find that the camera is working well .the above-mentioned defect disappear.
B. For the camera:
1. Disassemble the defective camera, load with a full battery, turn on the camera, and then use a
multimeter to test the input voltage of the main board (as Fig.1. between contacts A
and B),we find
that,
at
the
very
beginning,
the
input
voltage
is
about
4.2V
(the
normal
voltage
to
maintain
the
camera working is about 3.9V), but after a very short time, the camera is automatically turning off,
measure the input voltage again, this time the voltage is about 3.6V
,as what is mentioned above,
the
battery
is
full and
its
output
voltage
is
4.2V
,but
the
input
voltage
of
the
main
board
is
only
3.6V
,so a connection defect may occur between these two parts, and the problem may be caused
by the bad battery connector.

input voltage of the main board (between contact A
and B)

2. Use a qualified battery connector to replace the unqualified one, and then do the same test, we
find
that
the
input
voltage
of
the
main
board
is
maintaining
at
about
4.2V
,
and
the
camera
is
working well, no defect occurs again.
3. Use a multimeter to measure the resistor between the top probe and the base of the connector
(as Fig.2.),we find that the resistor between these
parts is vibrating from 0.2Ω to 0.8Ω.(the normal
value
is
bout
0.1~0.2Ωsplit
open
the
plastics coat
on
the
probe(as
Fig.3.)and
then
measure
the
resistor between the top probe and the bottom probe, and we find that resistor between these two
parts is vibrating from 0.1Ω to 0.7Ω(the normal resistor is about 0.1Ω)


Fig.2. The top probe and the base of the connector
top probe and the bottom probe

5. According to the test results mentioned above, we know that the resistor between the top probe
and
the
bottom
probe
is changeable,
that
is
because
a
poor contact
problem
is
occurring
there,
therefore, the voltage output is subject to change too, which leads to camera automatically turn off
o
r even can’t turn we can draw to a conclusion that the root cause of the problem is the poor
contact.

DISCIPLINE 5 PERMANENT C/A
PLAN (
永久計劃
)

DA
TE
：
2007/1/31
The
factory
inform
the
supplier
of
this
failure
information,
and
the
supplier
have
dug
out
the
following
root
cause:
it
is
the
insufficient
plating
that
causes
the
poor
contact
problem,
after
discussion, we determine to make a design change by gilding more plating onto the probes, the
thinness of the plating will be increased by 10 u” from the original 5u” to 15u”, furthermore, the
spring
inside
the
probe will
be
gilded
with
15u”
gold
coat
(Formerly
this
part
didn’t
have
any
platingall the corrective actions will enhance the electric performance of battery connector , please
refer to the following pictures for the structural drawing of probe and the live probe

Fig.4. The structural drawing of probe








live probe

DISCIPLINE 6 VERIFICA
TION OF EFFECTIVENES (
有效的確認
)

DA
TE
：
2007/1/31

We
are
planning
on
500pcs
control
run
at
the
factory
at
the
time
not
later
than
February
16,
order to test and verify these corrective actions

DISCIPLINE 7 PREVENT RECURRENCE (
預防再發生
)

DA
TE
：
2007/1/31
1. Gilding
more
painting
onto
the
probes
so
as
to
enhance
the
electric
performance
of
battery
connector
2. Convening a meeting of the related person from QC and QA
at the factory, inform them of this
information, and request them to attach more attention on this issue in future
3. The factory will continue tracing this problem, reply both Joyfame and CEC R&D about the
implementation
of
corrective
actions
and
updated
information,
until
the
problem
is
resolved
ultimately.

DISCIPLINE 8 CONGRA
TULA
TION (
結尾祝詞
)

DA
TE
：
2007/1/31
Thanks & Best Regards