Roland VersaEXPRESS RF-640 Service Notes page 125

Select [SERVICE MENU]>[I/S MENU]>[PUMP CHECK], and
17
perform [PUMP SUCTION] and [PUMP RELEASE] to check
if the pumps work correctly.
Clear the pump times.
18
Select [SERVICE MENU]>[HISTORY MENU]>[MOTOR
GROUP]>[PUMP TIMES]>[CLEAR], and press the [ENTER]
key.
Fix the Right Under Cover.
19
SERVICE MENU
I/S MENU
[ ]
I/S MENU
PUMP CHECK
SERVICE MENU
HISTORY MENU
[ ]
HISTORY MENU
MOTOR GROUP
[ ]
PUMP TIMES
9134 times
3-51
PUMP CHECK
PUMP SUCTION
[ ]
PUMP SUCTION
A
PUMP CHECK
PUMP RELEASE
PUMP RELEASE
A
PUMP TIMES
CLEAR
Right under Cover
[ ]
[ ]