Konica Minolta PagePro 1390 MF - Manual (Page 124)

T-14
(3) 020: H.V. abnormal
(4) 040: Laser error
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.
☞ D-15
– –
3 Replace PWB-A.
☞ D-11
– –
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.
☞ D-19
– –
3 Replace PWB-A.
☞ D-11
– –