Roland VersaEXPRESS RF-640 Service Notes page 91

Check whether the Head Ribbon Cables are connected to
18
the correct connectors.
Open the Choke Valve.
19
Take off the all you inserted in the Choke Valves in step 3.
Fix the Rear Ink Cartridge
20
Cover by seven screws as
shown.
< Rear View >
3-17
4
2 1
3
4
Rear Ink Cartridge Cover
3 2
1
RF-640
RF-640A