Epson Stylus Photo RX700 - Page 49

EPSON Stylus Photo RX700 Revision A
Operating Principles Operating Principles of Electric Circuitry 49
 Output specifications
Note "*1": The values of Output 1 do not include any ripple or spike. The values of Output 2
and 3 do not include any spike.
"*2": The ripple and spike voltage are reference values with a rated resistance load
applied. (Ambient temperature: 25°C)
For the measurement of Output 1, connect a 47uF electrolytic capacitor and 0.1
µF
film capacitor to the output.
For the measurement of Output 2 or 3, connect a 0.1µF film capacitor to the output.
"*3": A maximum of 2.1 A output current is permitted as long as it does not continue for
more than 10 ms.
"*4": 13 V or above when Output 2 is 150mA, Output 3 has no load, and Output 1 is 35mA
or more. 21 V or above when Output 2 has no load, Output 1 and 3 have the
maximum load.
Note "*1": Output 4, 5 and 6 do not include any spike.
"*2": The ripple and spike voltage are reference values with a rated resistance load
applied. (Ambient temperature:25°C)
 Protective functions
Note "*1": Intermittent operation in which operation period is about 12%.
"*2": Outputs of the C583 MAIN Board
"*3": The overvoltage protection function is constituted outside the Power Supply Unit.
Item
Outputs of the Power Supply Unit
Output 1 Output 2 Output 3
Rated output voltage
+42V +15V +5V
Output voltage range*
1
40~44V 13~21V*4 4.75~5.25V
Rated output current
0.8A 0.15A 1.2A
Output current at starting, stop or in
low-power mode
0.24A or below 0.15A or below 0.6A or below
Output current range
0~2.0A*
3
0~0.15A 0~1.2A
Ripple voltage*
2
100mVpp Typ. 100mVppTyp. 100mVpp Typ.
Spike voltage*
2
500mVpp Typ. 300mVpp Typ. 300mVpp Typ.
Item
Outputs of the C583 MAIN Board
Output 4 Output 5 Output 6
Input voltage
+15V +42V +42V
Input voltage range
13~21V 15~44V 15~44V
Rated output voltage
+12V +3.3V +1.5V
Output voltage range*
1
11.60~12.60V 3.135~3.465V 1.350~1.650V
Rated output current
0.15A 0.8A 0.8A
Output current at startup
0A 0.8A 0.8A
Output current range
0~0.15A 0~1.2A 0~1.2A
Ripple voltage*
2
20mVpp Typ. 50mVpp Typ. 30mVpp Typ.
Spike voltage*
2
200mVppTyp. 100mVppTyp. 100mVppTyp.
Item
Output 1
(+42V)
Output 2
(+15V)
Output 3
(+5V)
Output 4
(+12V)*
2
Output 5
(+3.3V)*
2
Output 6
(+1.5V)*
2
Overcurrent protection
(OCP)
Intermittent
operation*
1
Shutdown
type
Dropping
type
Dropping
type
Shutdown
type
Shutdown
type
OCP reset method
Automatic
recovery
Replace
fuse
Automatic
recovery
Automatic
recovery
Restart Restart
Load short-circuit current
2Arms
or below
0.315Arms
or below
1Arms
or below
0.5Arms
or below
0.1Arms
or below
0.1Arms
or below
Overvoltage protection
(OVP)
Shutdown
type
Shutdown
type*
3
Shutdown
type*
3
Shutdown
type
Shutdown
type
Shutdown
type
OVP preset voltage
60 V or
below
25 V or
below
10 V or
below
20 V or
below
9 V or
below
4.5 V or
below