Samsung ML-6050 Service Manual page 39

Error code 1-052
Fault
Light image (3)
Description
The printed image is light, with no ghost.
Check
1. Engine board
2. Main body
Cause
1. Engine board bias (350-485V) and supply voltage (570-630V) may be low (Perform DCU diagnostic
mode 04 to measure the voltage).
2. Direct strong light may be entered into the manual feed slot.
Solution
1. Check the following parts :
U201(KA324), Q204(D526-Y), T204(Transformer), U203(SN7407N), resistors, diodes in the output
and feedback area.
2. Check if contrast mode is set to 'Light'. If not, change the install position of the printer or attach
OPC cover sheet (P/No: JC72-49093A).
Remark
Bias and supply voltage check point:
U203; #9 pulse input, #8 pulse output
Others
Samsung Electronics
Troubleshooting
Model ML-xxxx
5-7