Toshiba e-STUDIO520 Service Handbook page 513

21)Uneven light distribution
Defective area
Original glass
Main charger
Discharge LED
Scanner
Exposure lamp
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Fig. 5-21
Step Check items
1 Is the original glass dirty?
2 Are the needle electrode, main
charger grid and main charger case
dirty?
3 Is the discharge LED dirty?
4 Is any of the discharge LEDs off?
5 Are the reflector, exposure lamp, mir-
rors, lens, and original glass (espe-
cially the position of shading
correction plate) dirty?
6 Is the exposure lamp discolored or
degraded?
5 - 151
06/09
Prescription
Clean the original glass.
Clean or replace them.
Clean the discharge LED.
Replace the discharge LED.
Clean them.
Replace the exposure lamp.
e-STUDIO520/523/600/603/720/723/850/853
TROUBLESHOOTING
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