T11_Maintenance Instruction
Prepared by : Jeffery Huang
Approved by:
Date: 2010-5-31
TABLE OF CONTENTS
No power on
Shut off automatically
Dead halt
No charge
Quantity of electricity faulty detection
No display
LED NG (on the LCD)
LED NG (on the keyboard)
Key NG
No ring
No receiving voice
Innovating Customer Value
No sending voice or the voice is small
No vibration
SIM Card inefficacy
Camera inefficacy
Bluetooth inefficacy
TF card inefficacy
Earphone inefficacy
FM inefficacy
Touch NG
¾No power on
No power on
Check whether the
battery voltage is
higher than 3.4V
Y
Check whether the battery
and the Connector of J9411 is
oxidized or there is
anything else on it
N
Check whether the
PAD of K/B & dome
is OK
N
Take out the LCD, SPK,
Camera, MOTO, Touch
lens, check whether it is
powered on
N
Y
Y
Y
Charge the battery
Wipe off the thing
or clean the Connecotr
clean the K/B, change the dome
Cross-testing the
Accessory,
Change the defective
N
A
A
Check whether R1109
(10K) is broken
N
Connect with the battery, press
“ON” key, check whether the
voltage of B1104 is 2.8V
Y
Connect with the battery, press “ON”
key, check whether the output
voltage of U1100 is normal (*)
Y
Check whether the output
frequency of X1100 is 32.768K
Y
Check whether the output voltage
of U2604 pin3 is 1.13V around
Y
Change R1109
N
N
Replace C1122, C1125
B1104, check whether
it is OK
Replace the earthed capacitor
corresponding to the
defective pin, Check whether
it is OK
N
Change X1100, C1100, C1101
N
Check whether U2602
pin17 has an voltage
of 2.8V around
N
Change U5300,
Check whether
N
Change U1100
Y
Change U2602
* C1121: 1.8V, the capacitor: C1121;
C1123: 2.8V, the capacitor: C1123;
B1105: Vbat, the Bead: B1105;
C1120: 2.8V, the capacitor: C1120;
C1124: 2.8V, the capacitor: C1124;
C1127: 2.8V, the capacitor: C1127.
N
Change U1100
it is OK
Y
Change the FLASH (U100),
check whether it is OK
N
Change U1130
N
Change U1100
N
Change R2615
N
Change U1100
¾Shut off automatically
Shut off automatically
D/L the latest software,
Check whether it is OK
N
Replace with a
good battery, Check
whether the
primary cell is broken.
N
Check whether the
rubber, used to fix the
battery, is lost or at the
other location
N
Check whether the battery
and the Connector of J9411 is
oxidized or there is
anything else on them
Y
Y
Change the battery
Y
Y
Reassemble the
or clean the Connector
OK
rubber
Wipe off the thing
N
C
Innovating Customer Value
C
Check whether the
battery connector ‘J9411’ is
void-welded or broken
N
Check whether the contact of
the key PAD & the dome is OK
Y
Check whether X1100
output frequency is
32.768K exactly
Y
Refer to the maintenance
method of ‘No power on’
Y
N
N
Re-weld or
change J9411
Reassemble the dome
ChangeX1100,
C1100,C1101
OK
¾Dead halt
Innovating Customer Value
Death halt
D/L the latest software,
Check whether it is OK
N
Replace with a good
battery, Check whether
the primary cell is broken
N
Check whether the
problem is resulted
from ‘KEY NG’
N
Check whether the
problem is resulted
from the LCD itself
Y
Y
Y
Y
Change the battery
OK
Clean the Key PAD,
reassemble or change
the metal dome
Change the LCD
N
D
Innovating Customer Value
D
Check whether the
output frequency of
X1100 is 32.768 exactly
Y
Check whether the contact of
the key PAD & the dome is OK
Y
Replacing with the
programming FLASH,
check whether it is OK
N
Refer to the servicing
method of ‘No power on’
N
N
Re-weld or change
X1100,C1100,C1101
Reassemble
the dome
OK
¾No charge
No charge
Replace with a
good battery, Check
whether the
primary cell is broken.
N
Replace with a good
adaptor, Check
whether the primary
adaptor is broken
N
Innovating Customer Value
Y
Y
Change the battery
Change the adaptor
Check whether the
battery connector ‘J9411’
is oxidized or is broken
N
Check whether the
connector ‘J9431’ is
void-welded or
broken
N
E
Y
Y
Clean or
change J9411
Re-weld or
change J9431
E
Plug in, Check whether it has an
voltage of 5V on B1103
Y
Check whether there is broken of
Q1101, R1102, Z1340
N
Change the
CPU(U1100)
OK
N
Y
Change B1103
BLM18EG221TN1
Change the defective