3) 020: h.v. abnormal, 4) 040: laser error, T-14 – Konica Minolta PagePro 1390 MF User Manual
Page 124
T-14
(3)
020: H.V. abnormal
<Detection Timing>
<Troubleshooting Procedure>
(4)
040: Laser error
<Detection Timing>
<Troubleshooting Procedure>
Description
• The Drum Charge Monitor Voltage (HVC_MON) signal falls outside a predetermined
range at any time after the lapse of a predetermined period of time after the Power
Switch has been turned ON.
• The Image Transfer Voltage Monitor signal (T_MON_V) and Image Transfer Current
Monitor signal (T_MON_I) fall outside a corresponding predetermined range.
Relevant Electrical Parts
Fusing Unit
Mechanical Control Board (PWB-A)
High Voltage Unit (HV1)
Step
Action
Ref. Page
WIRING DIAGRAM
Control Signal
Location
(Electrical Parts)
1
Replace the Fusing Unit.
☞ E-8
–
–
2
Replace HV1.
–
–
3
Replace PWB-A.
–
–
Description
• The laser output exceeds the upper-limit value.
• The laser output remains lower than the lower-limit value.
Relevant Electrical Parts
PH Unit
Mechanical Control Board (PWB-A)
Step
Action
Ref. Page
WIRING DIAGRAM
Control Signal
Location
(Electrical Parts)
1
Check the cables for connection
and correct as necessary.
–
–
–
2
Replace the PH Unit.
–
–
3
Replace PWB-A.
–
–