Lenovo S930 Manual de serviço - Página 31
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It
N Y Y Can't
Keys
N You can't
You can't be
doesn't
can't
take
N Y Check
OK
Check
Y N N Check
Y N Motherboard
Check
Check to see
OK
N N N Y N N OK
Y Y Y N Y Device will
Y Can
OK
N Repair
Check
N Replace
Replace the
N Check U201.
OK
OK
Is there a big
Y Replace
Y N Is the front
Re-solder.
Does
Y Check
Is the front
Replace the
It does not
Y Repair
Y N N N Check
Replace
Y LCD
OK
Check
Check
OK
LEDs
Check
Keyboard
Y N Re-solder.
Replace
Replace the
Check
Test
OK
Y Check
OK Replace
The
Y Replace the
Y OK
Y N OK
Are
N Replace the
Y OK
N Y Repair
Replace
OK
N OK
Check
Replace the
It shows the
Replace
N Re-solder or
It does not
Y N Check
N Check
OK
OK
N N OK
Y Y Y N OK
N Y Replace the
OK
Re-solder or
Y Replace the
Replace the
OK
OK
Y OK
N N Y Check
Y N OK
Replace
Y N Check
Check
N Check
Replace the
OK
Y Replace the
N Y OK
Y
N N OK
Replace
OK
N N Replace the
Y Check
Dissemble
OK
OK
Screen is
Some
Replace
Replace
U613
using
front
the
the
the
the
the
the
the
the
the
the
the
are
of
them
camera can't
don't
solder joints
main
whether key
receiver.
whether the
camera
front camera
whether the
charging
replace
solder joints
soldering,
front camera.
components
U201.
photos.
battery.
solder joints
replace
whether the
battery.
backlight
solder joints
hear
U201.
U201.
solder joints
whether MIC
show
work
charger.
the
charger.
whether the
whether
LCD
the
is damaged.
keyboard
current when
solder joints
LCD
spring
earphones. If
camera
U201.
whether
damaged.
whether the
U201.
ring.
soldering,
chip U201.
solder joints
motor. Check
microphone.
whether the
heard by the
U801.
whether the
vibrate.
not turn on.
backlight
Camera
whether
speaker.
work
solder joints
soldering,
solder joints
blank.
battery
unit.
chip
pins
the
the
doesn't light
doesn't light
there's sound
Check
and try again
of
person
indicator.
and
of
have a dry
take photos.
Check
main
Check
U201.
light
of
of U201.
normal?
and
audio power
properly
Retry to see
U201.
whether the
charging
output of the
properly.
solder joints
position
connections
light up?
and
person
EMI
Retry to see
module.
U201.
correct
of
Replace
of B403 and
of U201.
and
Check
and
module.
module.
EMI
of
normal?
of the Power
of
power
connection
Check
of
Replace the
modules
X0201,
chip
you
the
the
the
the
the
try
try
try
try
of
at
components
backlight
of the motor
up.
between FPC
again.
components
voltage
motherboard.
On
supply
of LCD FPC
in
LEDs which
whether
components
Check
again.
receiver
joint or short
the
whether
C0201
whether
indicator
again.
components
whether
again.
whether the
B404.
are
surrounding
whether the
U301
current-limiti
whether the
up.
amplifier
metal dome
But
U201
components
Camera
problem
to
you
button.
talking
and
and
see
are
the
the
of
is
is
is
it
it
it
it
LENOVO S930 Cellphone Service Manual
battery can't
don't
light
U302.
of
of
are
applied
components
rings.
can
of keys is
Re-solder.
Camera
problem
ng
problem
are
U405 has a
circuit at the
module
fixed.
C0202.
of
frequency of
damaged?
works
circuit
whether
damaged.
earphones,
when charger
is
of
motherboard
can
Does it have
Troubleshoot
talking to.
to.
whether the
in
modules
modules
normal.
module
resistor
charge
charge
good.
LCD
LCD
Try
on
is
is
it
up.
integrated
channel
MIC400.
then there is
battery
Re-solder
module
connectors.
U301
normally.
U301
the
motherboard
can
Re-install
is
fixed.
need to be
26MHz?
again.
dry
a dry joint
Test again.
fixed.
properly.
be
R910 has a
the positive
Are
is
correct, or if
Replace it if
module and
problem?
normally and
plugged
faulty
joint
fully
their
take
and
and
can
the
on
is
4.7 GPS - search satellites and locate
the battery's
U302. Repair
it's corroded
U302.
phone's only
audio signal
Repair
and negative
be
board.
re-soldered.
dry
photos.
problem?
Re-solder the
charged.
contacts
FPC. Check
problem or is
Re-solder.
motherboard
end
detached.
necessary.
and retry to
in.
connectors
and
check
joint
fully
is
Repair
power source
or sank. Lift
charged.
soldering
voltage
Re-assemble
good?
their
Check
on
see whether
have
soldering on
whether the
backlight
damaged.
correct.
input. Check
component.
problem.
solder
dry
Is
is
soldering
Problem: GPS can't find satellites, and can't locate.
Check
display
(connect
lower
and
the module.
the
terminals of
motherboard
whether the
chip
the problem
Repair
the
Check
Repair
joints. Repair
joint
whether the
whole
U801
than
try
soldering.
the
Check
soldering or
connectors.
whether the
and
problems.
3V.
metal dome.
again.
whether the
the
normal?
are
works.
TP305 to the
is fixed.
problem
components
good.
LCD
EMI
try
is
Reason: WiFi/BT/GPS/FM four-in-one chip and its surrounding circuits have soldering problems.
Check
problem
replace
Reconnect
components.
module.
positive
Re-solder the
related
fixed. Check
whether
problem
Try again to
Clean
again.
the
it.
to
is
is
it
Troubleshooting:
can
terminal, and
them. Check
Try again to
fixed.
whether the
module
whether
Re-solder.
EMI
keyboard
see whether
fix.
take
it
whether
U405
see whether
with alcohol.
can
TP309
problem
photos.
Check
components.
the problem
have
take
to
is
it rings.
whether the
fixed.
LCD
Replace the
is fixed.
photos.
GND)?
dry
joint
backlight
problems.
problem
metal dome.
is
works.
Re-solder.
fixed.
Check
whether the
problem
is
fixed.
4.8 FM - search channels
Problem: FM can't find channels.
Reason: WiFi/BT/GPS/FM four-in-one chip and its surrounding circuits have soldering problems.
Troubleshooting:
GPS can't find satellites.
Does MT6627(U2301) have a dry
joint problem?
N
Do U2301, U2302 have dry joint
problems?
N
Replace main chip MT6627(U2301).
FM can't find channels.
Does MT6627(U2301) have a dry
joint problem?
N
Do U2301, U2302 have dry joint
problems?
N
Replace main chip MT6627(U2301).
Y
Re-solder.
Y
Re-solder.
Y
Re-solder.
Y
Re-solder.
Page 31