Riso ComColor X1 series Technical Manual page 428

8-6. Engine Control PCB Replacement
Do not replace the Hard Disk and Engine Control PCB at the same time.
Either one must be left on the machine while the other is replaced.
This is to allow existing Test Mode setting backup data to transfer from the existing Hard Disk or Engine Control PCB
to the new Hard Disk or Engine Control PCB.
Brand new Engine control PCB (spare part PCB) should be used for replacement.
1. Turn OFF the machine power.
2. Disconnect wire harnesses from the Engine Control PCB.
NOTE:If Option PCB is mounted on the Engine Control PCB, remove the Option PCB from the Engine Control PCB.
3. Remove the existing Engine Control PCB and mount the new PCB. (Screws x 10 pcs)
4. Connect the wire harnesses and mount the Option PCB if it existed.
5. Install the machine fi rmware in the Engine Control PCB.
Caution:
Install the same version fi rmware as the previous PCB.
The fi rmware package version must match with that of the Image Processing PCB and Hard Disk, or the machine
may face problem with its performance.
6. When the machine reboots automatically after the fi rmware downloading, the Total Counter information and all
the engine control related Test Mode settings, which are automatically saved in the Hard Disk in normal daily use
of the machine, will automatically transfer into the FLASH Memory of the Engine Control PCB.
NOTE: When replacing the Engine Control PCB on a brand new out-of-box machine, with machine power never turned ON. -
Out-of-Factory Default Test Mode Settings are stored in the HDD from those machines shipped with machine fi rm-
ware SNALL 7.16.3 installed.
<Refer to Test Mode No. 451 [Engine Factory Value Restore]. on the Test Mode chapter.>
Since the machine, on which the machine power is never turned ON, the HDD has not communicated with the Engine
Control PCB, and therefore has no backup test mode settings saved from the Engine Control PCB.
For this reason, the factory default test mode setting data is installed in the HDD when the machine is shipped.
IMPORTANT:
Test Mode No. 451 should not be applied on a machine on which the machine power had turned ON once and ma-
chine had booted correctly.
HDD then already has communicated with the Engine Control PCB and has the test modes settings copied from the
Engine Control PCB.
screw
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Option PCB
(if mounted)
Engine Control PCB
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Electronic Components
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Rev.1.00