Kennmex MPOS50-8B-LX800 Service Manual page 7

Error Code Symptom
System HANG
3201
Up
3300 LCD Blank
3301 LCD Turn Black
Check Points
1. CF
2. RAM
3. MB
1. Inverter
2. MB
3. M/B to LCD cable
1. Inverter
2. Inverter Cable
3. MB
4. M/B to LCD cable
5.LCD
7/55
Detail Steps
1. Shut Down Power, remove battery module/ remove
MSR module base/ I/O Cover, open rear cover, check if
CF is well plugged or not
2. If yes to item 1, open EMI chassis, remove inverter
cable on M/B (CN1), check if check if RAM well plugged on
the memory slot
2. Check golden finger cleanness, if not clean, use pencil
eraser to clean golden finger
3. If fail, replace with another RAM for testing
4. If fail, replace with another MB for testing
5. If fail, System RMA to manufacturer
1. Shut Down Power, remove battery module/ remove
MSR module base/ I/O Cover, open rear cover, open
inverter cover, replace with another inverter for testing
2. If fail, check if LCD signal cable well connected on
MB(CN2)
3. If yes to item 2, replace with another MB for testing
4. If fail, replace with another LCD signal cable for testing
5. If fail, System RMA to manufacturer
1. Shut Down Power, remove battery module/ remove
MSR module base/ I/O Cover, open rear cover, open
inverter cover, check if inverter to LCD cable is well
plugged or not.
2. If yes to item 1, replace with another inverter for testing
2. If fail, is, remove EMI cover, check if inverter cable well
connected between MB(CN1) and inverter
3. If yes, replace with another inverter cable for testing
4. If fail, check if LCD signal cable well connected on
MB(CN2)
5. If yes, replace with another MB for testing
6. If fail, replace with another LCD signal cable for testing
8. If fail, replace another LCD for testing
9. If fail, System RMA to manufacturer
Rev. 1.1