Samsung CLP-350N Service Manual page 33

1) Charger Voltage : Charger
Function: voltage that charges OPC surface up to -500V~ -800V.
Output voltage: -1.0KV ~ -2.0KV DC
Error type: if the voltage fails to be output to Charger Roll, OPC surface will not be charged, and the toner on
the developer roller will be transferred to OPC Drum, printing black paper.
2) 1st Transfer High Voltage : T1(+)
Function: voltage necessary for transferring toner developed on OPC Drum surface onto ITB.
Output voltage: Max +2.0KV
ERROR type: if T1(+) output fails, the toner on OPC drum will not be transferred to ITB normally and the
image will be blurred.
3) 2nd Transfer High Voltage : T2(+)
Function: voltage used to transfer the toner primarily transferred on ITB again onto paper.
Output voltage: Max +5.0KV
ERROR type: if T2(+) output fails, the toner on ITB will not be transferred to paper normally and the image
will be blurred.
4) T2 Cleaning Voltage : Clean : T2(-)
Function: prevent reverse side of paper from being dirtied, by recovering the negatively charged toner remaining
at Transfer Roller and sending it onto ITB.
Output voltage: with no feedback control, output fixed voltage(-1300V
ERROR type: reverse side of paper will be dirtied.
5) Supplying Voltage : Supply AC+DC(-)
Function: voltage that makes toner to develop on the area exposed by LSU by means of potential difference,
output will be the voltage of AC+DC overlapped form.
Output voltage: AC 600V ~ 2000V p-p
DC -50V ~ -600V DC
ERROR type: 1. if supply is GND, density will be extremely low.
2. if supply is floating (for insecure terminal contact), density will be down so slightly that it is
impossible to make out with naked eyes.
6) Developing Voltage : Deve AC+DC(-)
Function: voltage that supplies toner to Developing Roller
Output voltage: AC 250V ~ 1650Vp-p
DC -50V ~ -600V DC
ERROR type: 1. if Deve is GND, density will be extremely down.
2. if Deve is floating (for insecure terminal contact), density will be extremely down.
Samsung Electronics
3%
3%(Duty variable, no load)
3%(Duty variable, no load)
1.5%
3%
1.5% (supply voltage is connected to ZENER Diode 350V)
3%
Product specification and feature
15%)
Service Manual
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