EPSON FX-890/2190
Revision B
Operating Principles
Overview
51
Note “*1”: Each value indicated here is only the average of measured values of samples
(sample size n = 3), that is, it is not a typical value or guaranteed value.
“*2” : Each value does not include the current flowing in the capacitor of the EMI filter
circuit.
OUTPUT SPECIFICATIONS
Note “*1”: Neither Output 1 nor Output 2 includes the spike voltage component.
“*2” : The output current during power supply startup must be not greater than the value
specified above.
“*3” : The values for ripple and spike voltage indicated above, which are the values with a
rated resistance load, are only for reference. (Ambient temperature: 25
°
C)
For measurement, connect a KMF50V470
µ
F electrolytic capacitor and 0.1
µ
F film
capacitor to the output 1 terminal, and a KME16V47
µ
F electrolytic capacitor and
0.1
µ
F film capacitor to the output 2 terminal.
PROTECTIVE FUNCTIONS
Special output holding
time
(The period from the
time when output 1 has
dropped below 26 V to
the time when output 2
drops below the output
voltage lower limit)
120 ms or more
(Input: 85 V, 60 Hz)
(Input: 187 V, 50 Hz)
(Input: 85 V, 60 Hz)
(Output: At output 1 of no-load and output 2 of rated load)
Table 2-5. Output Specifications
Item
Output 1
Output 2
Rated output voltage
+42 V
+5 V
Output voltage fluctuation
*1
40.0 ~ 44.0 V
4.75 ~ 5.25 V
Rated output current
0.8 A
0.7 A
Output current at startup
*2
0 A
0.7 A
Output current range
0~2.8 A
0~0.7 A
Ripple voltage
*3
-----
100 mVpp Typ.
Spike voltage
*3
1500 mVpp Typ.
300 mVpp Typ.
Table 2-4. Input Specifications
Power Supply Unit
Name
C524 PSB
(100-120V Spec)
C524 PSE
(220-240V Spec)
C524 PSH
(100-240V Spec)
Table 2-6. Protective Functions
Item
Output 1
Output 2
Overcurrent protection (OCP)
Dr cutoff
Cutoff
OCP reset method
Turning power off
once and on again
Turning power off
once and on again
Load short-circuit current
0 A
0 A
Overvoltage protection (OVP)
Cutoff type
Cutoff type
OVP preset voltage
45 ~ 58 V
6 ~ 9 V
Содержание 890N - FX B/W Dot-matrix Printer
Страница 1: ...EPSONFX 890 2190 Serial Impact Dot Matrix Printer SEDM02003 SERVICE MANUAL ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTIONS ...
Страница 43: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 52: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 65: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 93: ...C H A P T E R 5 ADJUSTMENT ...
Страница 98: ...C H A P T E R 6 MAINTENANCE ...
Страница 104: ...C H A P T E R 7 APPENDIX ...
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Страница 116: ...FOR FX 890 NO 2 R ev 01 C524 E LE C 01 A A B J C B C H E F I K L M G D D 300 450 372 200 400 350 ...
Страница 118: ...FOR FX 890 NO 4 R ev 01 C524_PACK_01 03 01 06 04 04 xx 07 02 02 02 05 05 ...
Страница 120: ...FOR FX 2190 NO 2 Rev 01 C526_ELEC_01 A A B G D E J F F K L B I F H 200 400 373 330 372 450 ...