TASKalfa 3500i - CF040 Communication Error Main PCB;Engine PCB; Whether aging drive is starts or not

CF040（Communication Error between the Main
PCB and Engine PCB）
Whether aging drive is starts or not after closing the cover.
Check the short circuit of harness for 5V or 3.3V
connected to the Engine PCB and recover the
fault wire.
Replace Engine PCB
Main PCB YC3
Re-insert the FFC
connector
Re-insert the Engine PCB FFC connector （YC46）
Replace FFC
Replace Main PCB
Replace Engine PCB
Replace HDD
OK OK
OK
OK
OK
OK
FFC item code：
5500i/4500i/3500i ：
302K946A00 WIRE FFC MAIN-ENGINE
NG
NG
NG
NG
NG
NG
If CF040 occurs, take the following measure.
Product
Item Name Item Number Item Name Item Number
MAIN PCB PARTS PWB MAIN ASSY SP 302LH9414* PARTS PWB MAIN ASSY SP 302LF9417*
PARTS PWB MAIN ASSY SP EU 302LH9415* PARTS PWB MAIN ASSY SP EU 302LF9418*
ENGINE PCB PARTS PWB ENGINE ASSY SP 302LH9417* PARTS PWB ENGINE ASSY SP 302LF9420*
HDD PARTS STORAGE DEVICE SP 302LH9307* PARTS STORAGE DEVICE SP 302LC9316*
3500i/4500i/5500i
6500i/8000i
98