Canon imagePROGRAF W6200, Service Manual, Page: 231 / 311

7.4.2 Scale read error!
(E04002)
<Cause>
This is displayed when the carriage sensor could not read the linear scale.
<Probable problem locations>
Linear scale, carriage sensor, carriage unit, carriage relay PCB, engine controller,
system controller
<Remedy>
1.Visual check
Replace the linear scale if it is dirty, damaged, deformed, or otherwise does not
function normally.
Remove any foreign objects adhering to the carriage sensor.
2.Replace the carriage unit.
3.Cable connection check
Replace the cable between the carriage sensor and carriage relay PCB if the
connection is not functioning normally.
4.Replace the carriage relay PCB.
5.Cable connection check
Replace the cable between the carriage relay PCB and engine controller if the
connection is not functioning normally.
6.Replace the engine controller.
7.Replace the system controller
7.4.3 Turn Power Off!!
(S04010/S04011/S04012)
<Cause>
System controller RTC not found (S04010).
System controller RTC power low (S0411).
System controller RTC stopped (S0412).
<Probable problem locations>
Lithium and system controller
<Remedy>
1. Replace lithium battery.
2. Replace system controller.
Note that it will be necessary to re-enter time and date if replacing the
lithium battery. The steps used are described in “
Part5: 5.2.11 Boards” .
5-63
W6200 Part 5: Maintenance
REF.