Develop D 16G, Service Manual

Page: 163 / 239

T-19
(7) C1200: ASIC memory abnormal
<Detection Timing>
<Troubleshooting Procedures>
(8) C1300: Polygon mirror motor error
<Detection Timing>
<Troubleshooting Procedures>
Description
• An error occurred while writing to or reading the SRAM on the Control Board (PWB-C).
Relevant Electrical Components
Controller/Mechanical Control Board (PWB-P)
Step Action Ref. Page
WIRING DIAGRAM
Control Signal
Location
(Electric Parts)
1 Turn the copier off, then on
again.
– – –
2 Check the connection of the
memory on the PWB-P, and
then correct it if necessary.
– – –
6 Replace PWB-P. – – –
Description
• The LOCK signal is not detected within a predetermined period of time that begins 1
sec. after the Polygon Motor has been energized.
• No new LOCK signal is detected for a 1-sec. period that begins 1.5 sec. after the first
LOCK signal was detected.
• The LOCK signal is not detected for a continuous 0.5-sec. period in a state in which the
Polygon Motor runs stably.
• The LOCK signal remains ON for a continuous 5-sec. period or more when the Polygon
Motor remains deenergized.
Relevant Electric Parts
PH Unit
Flat cable Controller/Mechanical Control Board (PWB-P)
Step Action Ref. Page
WIRING DIAGRAM
Control Signal
Location
(Electric Parts)
1 Check cables for connection and
correct as necessary.
– – –
2 Replace PH Unit. – – –
3 Replace PWB-P. – – –