Troubleshooting - Samsung ML-1640 Service Manual

4.2 Troubleshooting

4.2.1 Checking Symptoms
Before attempting to repair the printer first obtain a detailed description of the problem from the customer.
Power On
On-Line LED
ON?
On-Line LED
Green OK?
Print(test pattern)
printing
Quality is
Nomal?
END
Service Manual
Alignment & Troubleshooting
- No Power
- Power Module error
- Main PBA
Indicate
"Lamp toggle"
Refer to "Solution
of Image Problem"
4-18
Refer to
"Chapter 4.1.4"
Samsung Electronics