Troubleshooting
4-27
Samsung Electronics
OK after
taking out and
rocking the toner
cartridge?
It is over the guaranty
life of toner cartridge
(Check the counter
and replace it)
When gray
pattern printing,
irregular density
persists?
PTL lamp
works OK?
Any obstacles
on the PTL lamp?
transfer/
charge/developing
voltage drops while
printing?
Defective agitator in
the toner supplying part
of developer
->Replace the developer
Check if the 'guide deve
spring' works OK and
repair/repalce
Check high voltage
output and repair/
replace terminals, HVPS
Replace lamp
Clean the window of PTL
Bad images
around the no image
area?
Irregularity of toner
supply from developer
-> Replace developer
Light distortion due to
the mirror ruined or
LSU's diffused reflection
-> Replace LSU
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Irregular Density
Summary of Contents for SF-830
Page 112: ...Exploded Views and Parts List 5 34 Samsung Electronics ...
Page 116: ......
Page 163: ...4 2 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 2 17 ...
Page 164: ...4 3 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 3 17 ...
Page 165: ...4 4 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 4 17 ...
Page 166: ...4 5 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 5 17 ...
Page 167: ...4 6 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 6 17 ...
Page 168: ...4 7 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 7 17 ...
Page 169: ...4 8 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 8 17 ...
Page 170: ...4 9 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 9 17 ...
Page 171: ...4 10 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 10 17 ...
Page 172: ...4 11 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 11 17 ...
Page 173: ...4 12 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 12 17 ...
Page 174: ...4 13 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 13 17 ...
Page 175: ...4 14 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 14 17 ...
Page 176: ...4 15 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 15 17 ...
Page 177: ...4 16 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 16 17 ...
Page 178: ...4 17 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 17 17 ...
Page 180: ...4 19 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 3 OPE Circuit Diagram D9 ...
Page 181: ...4 20 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 4 Scan Circuit Diagram ...
Page 187: ...4 26 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 8 PTL Circuit Diagram ...
Page 188: ...4 27 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 10 Toner_Rx Circuit Diagram ...
Page 189: ...4 28 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 11 Toner_Tx Circuit Diagram ...