
Samsung Electronics
5-41
Troubleshooting
Error code 3-100
Fault
Description
When system power is turned on, all lamps on the operator panel do not come on.
No power
Model ML-xxxx
Check
Engine board
Cause
1. Defective harness between engine and control boards.
2. Defective harness between the control board and panel.
3. Defective fuse F151
4. Defective fuse F101
5. BD101 short. Check for the resistance value of Q102.
6. Defective U101
Solution
1. Check the connection between engine and control boards, and replace, if defective.
2. Check the connection between control board and operator panel. If defective, replace the harness.
3. Check F151 on the engine board. If open, measure the resistance between 5V and ground. If it is
below 50 ohm, it is short.
4. Check F101 on the engine board. If open, check also :
- R114 open
- Q102, D-S, G-D, or G-S short
- Defective BD101
Remark
Others
Summary of Contents for ML-6050
Page 2: ... Samsung Electronics Co Ltd Mar 1999 Printed in Korea P N JC68 00072A Rev 1 00 ELECTRONICS ...
Page 12: ...Reference Information 3 8 Samsung Electronics Memo ...
Page 32: ...Disassembly and Reassembly 4 18 Samsung Electronics Memo ...
Page 138: ...Schematic Diagrams 8 17 Samsung Electronics 8 4 Flash SIMM ...