Kyocera FS 1100 Service Manual - Page 46

(1) Completely blank printout., (2) All-black printout., Defective control PWB. - drum unit

Page 46 highlights

2H5/2HS (1) Completely blank printout. Print example Causes Check procedures/corrective measures Defective drum unit or developing unit. Open the top cover and check that the drum unit and developing unit are correctly seated. Investigate that the terminals between the main charger unit and the drum unit are not in loose contact (See page 1-5-12 and 1-5-11). Defective transfer bias output or developing bias output. Replace the high voltage PWB (See page 1-5-25). Poor contact of developing bias terminal (spring) and high voltage output terminal B (J401, J402, J403) on the high voltage PWB. Poor contact of transfer bias terminal (spring) and transfer bias terminal T (J201, J202, J203) on the high voltage PWB. Check the high voltage PWB visually and correct or replace if necessary (See page 1-5-25). Defective laser scanner unit. Replace the laser scanner unit (See page 1-5-30). Defective control PWB. Replace the control PWB (See page 1-5-19). (2) All-black printout. Print example Causes Check procedures/corrective measures Defective main charger unit. Open the top cover and check that the drum unit and developing unit are correctly seated (See page 1-5-12). Investigate that the terminals between the main charger unit and the drum unit are not in loose contact. Poor contact of main charger terminal Check the high voltage PWB visually and correct or replace if (spring) and main charger output ter- necessary (See page 1-5-25). minal M on the high voltage PWB. Defective main charging output. Replace the high voltage PWB (See page 1-5-25). Broken main charger wire. Replace the main charger unit (See page 1-5-13). Defective control PWB. Replace the control PWB (See page 1-5-19). 1-4-10

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2H5/2HS
1-4-10
(1) Completely blank printout.
(2) All-black printout.
Print example
Causes
Check procedures/corrective measures
Defective drum unit or developing
unit.
Open the top cover and check that the drum unit and develop-
ing unit are correctly seated. Investigate that the terminals
between the main charger unit and the drum unit are not in
loose contact (See page 1-5-12 and 1-5-11).
Defective transfer bias output or
developing bias output.
Replace the high voltage PWB (See page 1-5-25).
Poor contact of developing bias termi-
nal (spring) and high voltage output
terminal B (J401, J402, J403) on the
high voltage PWB.
Poor contact of transfer bias terminal
(spring) and transfer bias terminal T
(J201, J202, J203) on the high volt-
age PWB.
Check the high voltage PWB visually and correct or replace if
necessary (See page 1-5-25).
Defective laser scanner unit.
Replace the laser scanner unit (See page 1-5-30).
Defective control PWB.
Replace the control PWB (See page 1-5-19).
Print example
Causes
Check procedures/corrective measures
Defective main charger unit.
Open the top cover and check that the drum unit and develop-
ing unit are correctly seated (See page 1-5-12).
Investigate that the terminals between the main charger unit
and the drum unit are not in loose contact.
Poor contact of main charger terminal
(spring) and main charger output ter-
minal M on the high voltage PWB.
Check the high voltage PWB visually and correct or replace if
necessary (See page 1-5-25).
Defective main charging output.
Replace the high voltage PWB (See page 1-5-25).
Broken main charger wire.
Replace the main charger unit (See page 1-5-13).
Defective control PWB.
Replace the control PWB (See page 1-5-19).