Toshiba e-STUDIO 4500c, Руководство по обслуживанию

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SERVICE PROGRAM TABLES April, 2007
5-44
2253 Manual Tnr Fill Manually Fill Development Unit Sub Hoppers
Use SPs to increase manually the supply of toner to the sub hopper of the
development unit to determine if toner supply is abnormal or to recover normal
operation of a color toner supply when image density becomes light. After you
press "Execute" the toner supply cluth switches ON for 2 sec. and then OFF for 0.1
sec. to fill the sub hopper of the development unit. This ON/OFF sequence is
repeated up to 20 times or until the toner end sensor detects that toner is present
in the sub hopper.
001 Execute:K
002 Execute:M
003 Execute:C
004 Execute:Y Executes forced filling of the selected development unit.
005 Execute:Col Executes forced filling of the Y, M, C development units
only.
006 Execute:All Col Executes forced filling of all development units (Y, M, C,
K).
2260 Pot.Sn Check Potential Sensor Check
This SP executes a check of all or one selected potential sensor.
001 All Colors Select and press "Execute".
002 K Display the results with SP2261 001 to 012
003 M
004 C
005 Y
2261 Pot.Sn Chk Disp Potential Sensor Check Results Display
Displays results of the potential sensor check executed with 2260.
001 Vd:K 007 Vr:C
002 Vd:M 008 Vr:Y
003 Vd:C 009 Voffset:K
004 Vd:Y 010 Voffset:M
005 Vr:K 011 Voffset:C
006 Vr:M 012 Voffset:Y
Notes for SP2261
Reading Definition Abnormal Reading
Vd Charge bias (Cdc). This is the output
of the potential sensor after –700V is
applied to the drum.
Range: -500 to –700 V If the reading is out of range:
•
Potential sensor damaged
•
Charge unit malfunction
•
Charge power pack malfunction
Vr Residual voltage. This is the output of
the potential sensor after the LD fires
at full power.
Normal: -200 V If above –200V:
•
Drum deteriorated
•
Toner shield glass dirty
•
Potential sensor out of position
Voffset This is the reading of the potential
sensor with no charge applied to the
drum.
Normal: 0
±
10V
If reading is out of range:
•
Potential sensor dirty
•
Potential sensor out of position