T-1 4
(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. 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 ––