Epson LQ-2550 Technical Manual page 220

REV.-A
1. Printer does not operate at all with power switch on.
START
voltage.
on
the
Disconnect connector CN2
on the ROPSZROPSE boord.
turn the printer power on.
and measure
output valtage.
Connect
on the ROMA board,
Connect 011
the connectors
on the ROMA board.
printer power is turned on.
When the printer cover is shut: "OFF LINE" or "ON LINE"
Use correct
AC
input
volt oge.
on the ROPS/ROPSE board.
I
the fan unit.
R epl ace
the printer mechanism.
R epl oce
the cose o en sensor
Table 5-5. ROPS/ROPSE Board Output Voltages
Power Output Terminal
(Connector CN2)
– S i d e
+ Side
10-11-12
3 5-6
4 5-6
1-2 5-6
NOTE: The values are for when CN2 is disconnected.
v
I
Re lace
the ROPS/ OPSE baord.
*
I
5-8
Output Voltage IVl
10%
35V *
+ 5 & 5%