Epson LQ-870 Service Manual page 16

Ink ribbon
Reliability
Printhead life
Safety approvals
Electrical specifications 120 V version
Black ribbon cartridge #7753
Film ribbon cartridge #7768
Black ribbon cartridge #7754
Film ribbon cartridge #7770
Color Black
Life 2 million characters at 48 dots/character (black ribbon)
0.2 million characters at 48 dots/character (film ribbon), 80-column
0.3 million characters at 48 dots/character (film ribbon), 136-column
Dimensions of ribbon cartridge:
80-column:
293 mm (width) x 34 mm (height) x 72 mm (depth)
1 1.7 in. (width) x 1.4 in. (height) x 2.9 in. (depth)
468.5 mm (width) x 34 mm (height) x 72 mm (depth)
18.4 in. (width) x 1.4 in. (height) x 2.9 in. (depth)
Mean cycles between failures (MCBF): 5 million lines (excluding printhead)
Mean time between failures (MTBF): 4000 power-on hours (POH) at 25% duty,
80-column
Mean time between failures (MCBF): 6000 power-on hours (POH) at 25% duty,
200 million strokes (black ribbon)
100 million strokes (film ribbon)
Safety standards UL1950 with D3 (U.S. version)
EN 60950 (TUV) (European version)
Radio frequency
interference (RFI) FCC class B (U.S. version)
VDE087 1 (self-certification) (European version)
Rated voltage
Input voltage range
Rated frequency range 50 to 60 Hz
Input frequency range 49.5 to 60.5 Hz
Rated current
Power consumption
'Insulation resistance
1-7
120 VAC
103.5 to 132 VAC
2.0 A
Approx.58 W (during self-
test in draft)
1 0 M e g o h m s m i n i m u n ( a t
500 VDC between AC line
and chassis)
REV.-A