1 (1D Scanner) Trouble Shooting Guide Version 1.0 2012
Slide 2
2 Contents 1. POWER 1-1 Battery Check 1-2 Power problem 2. LCD
2-1 Touch 2-2 Touch check 3. PHONE 3-1 Phone not turning on 3-2 Bad
signal reception 4. WLAN 4-1 WLAN not turning on 4-2 Bad signal
reception 5. SCANNER 5-1 Scanner beam problem 6. CAMERA 6-1. Camera
not turning on 7. BLUETOOTH 7-1 Bluetooth not turning on 8. BUTTON
8-1 Key press not detected 9. SOUND 9-1 Speaker doesnt work 10.
System freeze 10-1 Freeze during booting 11. ECO 11-1 Main PCB
modification QVGA VGA 11-2 Main PCB modification for scanner 11-3
Freeze in low temperature
Slide 3
3 1. POWER 1) Check the main battery - measure voltage
4.0V(3.7~4.2) is normal. Replace if not 2) Check main board - Check
if the battery contact pin is not damaged Replace the main PCB if
damaged 3) CPU Check - Replace the CPU and check if the power turn
on 1-1 Battery check CPU part number: 310020201920
Slide 4
4 1. POWER 1-2 Unit not turning on 1) Fuse check - Check the
fuse (f1) Replace the key PCB if the fuse is broken
Slide 5
5 2. LCD 2-1 Touch 1) Touch check - Check if there is any dent
on the screen - Try screen alignment Replace the touch screen 2)
Main board check - Test touch after replacing the main PCB with
good one. Replace the main PCB if touch works after replacement. 3)
CPU Check - Test touch after replacing the CPU Replace the CPU if
touch works after replacement. - CPU part no. : 310020201920
Slide 6
6 2. LCD 2-2 How to check touch screen 1) Click on Start 2)
Click on notes 3) Draw circles and lines on the screen
Slide 7
7 3. PHONE 3-1 Phone not turning on 1) Check the SIM card If
SIM is bad, it will not access to the network 2) Module re-assembly
The module may be disconnected from the main PCB 3) Module
replacement Replace the defective module - HSDPA part no. :
217040030000
Slide 8
8 3. PHONE 3-2 Bad reception signal 2) Check antenna (on rear
case) Antenna part no. : 310020201235 3) Main PCB check - check
after replacing the main PCB 1)Check antenna cable Try after
replacing the cable Antenna cable part no.: 221030601004
Slide 9
9 4. WLAN 4-1 WLAN not turning on 1)Check WLAN module
connection 2)Try replacing the module - WLAN module part no.
217120120002 2) Main PCB check - Check the WLAN connector A cushion
can be used to prevent module displacement.
Slide 10
10 4. WLAN 4-2 Bad WLAN signal 1) Check WLAN cable and module
WLAN module 217120120002 WLAN cable 221030601005 2) WLAN antenna
check -The antenna can be detached. -Re-solder or replace the main
PCB
Slide 11
11 5. Scanner 5-1 Scanner beam problem 1)Check scanner firmware
If F/W and scanner module does not match, scan will not work. i.e.
Opticon scanner require Opticon F/W 2) Check cable connections -
Try after re-assembly 4) Check SCAN SUB PCB SCAN SUB PCB part no.:
310020201125 3) Try after replacing the scanner module
Slide 12
12 6. CAMERA 6-1. Camera not turning on 3) Main PCB check
(Check connector) 4) Check after replacing the CPU 1)Check module
connection 2)Try replacing the module - Camera part no.:
217110550000
Slide 13
13 7. BLUETOOTH 7-1 BLUETOOTH not initialized 1) Test after
replacing the main PCB
Slide 14
14 8. KEY 8-1 Key press is not detected Button press can be
checked using Key Monitor program. 1) Test after replacing the key
PCB cable and/or key PCB - KEYPCB part no.: 310020201030 2) Test
after replacing the main PCB 3) Test after replacing the CPU
Slide 15
15 1) Check speaker - see if there is broken wire - Speaker
part no. : 213010200002 2) Check resistance of speaker 8(7.6~8.4)
is normal resistance. Replace if not. 3) Test after replacing the
CPU 9. SOUND 9-1 Speaker doesnt work
Slide 16
16 10. Freeze 10-1 Freeze during booting 1) Enter boot menu and
re-install the OS 2) Test after CPU replacement
Slide 17
17 11. ECO 11-1 Main PCB modification QVGA VGA 1) Insert 0 to
R356, R357 to use with VGA LCD
Slide 18
18 11. ECO 11-2 Main PCB modification Opticon scanner 1)Solder
Opticon SCAN SUB PCB to main PCB - SCAN SUB PCB part
no.:310020201125 (SCAN SUB PCB ) 5-3 Main PCB modification Symbol
scanner 2) Insert 100K to R255 for SYMBOL HW (SE955)
Slide 19
19 11. ECO 11-3 Freeze in low temperature * This problem only
appears on CPU version 1.1. 2) Replace the CPU with good one. 1)
Tantal change Two capacitors should be marked with AN7. If not, the
CPU can stop working in low temperature.
