1. 1 (1D Scanner) Trouble Shooting Guide Version 1.0 ©2012

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 doesn’t 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

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

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

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

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

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

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

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.

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

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

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

13. 13 7. BLUETOOTH 7-1 BLUETOOTH not initialized 1) Test after replacing the main PCB

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

15. 15 1) Check speaker - see if there is broken wire - Speaker part no. : 213010200002 2) Check resistance of speaker  8Ω(7.6~8.4) is normal resistance. Replace if not. 3) Test after replacing the CPU 9. SOUND 9-1 Speaker doesn’t work

16. 16 10. Freeze 10-1 Freeze during booting 1) Enter boot menu and re-install the OS 2) Test after CPU replacement

17. 17 11. ECO 11-1 Main PCB modification QVGA  VGA 1) Insert 0Ω to R356, R357 to use with VGA LCD

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 100KΩ to R255 for SYMBOL HW (SE955)

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.