
Samsung Electronics
5-15
Troubleshooting
Error code 1-091
Fault
Description
When xerographic paper is used in ADF, ghost occurs at 94 mm intervals.
Ghost (3)
Model ML-xxxx
Check
Engine board
Cause
1. No minus (-) transfer voltage output from the engine board.
(Normal voltage : 1250 -1450V with 660 Mohm load)
2. The (+) transfer voltage may be abnormal when performing DCU #13 with 660 Mohm load on the
transfer voltage output. (Normal voltage: 2200V (+30/-30V) DCU #14, 3250-3350V DCU #13).
Solution
Check the following parts :
U201(KA324), Q207(A708), Q202(KSD526-Y), T201, U203 (SN7407),
resistors, or diodes in the output and feedback area.
Remark
Others
In case of no minus transfer output voltage, image quality may be poor, and background may occur in
the printing.
Содержание ML-6050
Страница 2: ... Samsung Electronics Co Ltd Mar 1999 Printed in Korea P N JC68 00072A Rev 1 00 ELECTRONICS ...
Страница 12: ...Reference Information 3 8 Samsung Electronics Memo ...
Страница 32: ...Disassembly and Reassembly 4 18 Samsung Electronics Memo ...
Страница 78: ...Exploded Views and Parts Lists 6 2 Samsung Electronics 6 1 Main Exploded View 4 1 5 8 6 7 9 3 11 12 13 2 14 10 ...
Страница 138: ...Schematic Diagrams 8 17 Samsung Electronics 8 4 Flash SIMM ...