Epson Stylus Photo RX700 Service Manual page 49

EPSON Stylus Photo RX700
Output specifications
Item
Rated output voltage
1
Output voltage range*
Rated output current
Output current at starting, stop or in
0.24A or below
low-power mode
Output current range
Ripple voltage* 2
100mVpp Typ.
2
Spike voltage*
500mVpp Typ.
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
film capacitor to the output.
For the measurement of Output 2 or 3, connect a 0.1
"*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.
Operating Principles
Outputs of the Power Supply Unit
Output 1 Output 2 Output 3
+42V +15V
40~44V 13~21V*4 4.75~5.25V
0.8A 0.15A
0.15A or below 0.6A or below
3
0~2.0A* 0~0.15A
100mVppTyp. 100mVpp Typ.
300mVpp Typ. 300mVpp Typ.
µ
F film capacitor to the output.
Operating Principles of Electric Circuitry
Item
Input voltage
Input voltage range
+5V
Rated output voltage
Output voltage range*
1.2A
Rated output current
Output current at startup
Output current range
0~1.2A
2
Ripple voltage*
2
Spike voltage*
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
µ
F
Item
Overcurrent protection
(OCP)
OCP reset method
Load short-circuit current
Overvoltage protection
(OVP)
OVP preset voltage
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.
Outputs of the C583 MAIN Board
Output 4 Output 5
+15V +42V
13~21V 15~44V
+12V +3.3V
1
11.60~12.60V 3.135~3.465V
0.15A 0.8A
0A 0.8A
0~0.15A 0~1.2A
20mVpp Typ. 50mVpp Typ.
200mVppTyp. 100mVppTyp.
Output 1 Output 2 Output 3 Output 4
(+42V) (+15V) (+5V) (+12V)*
Intermittent Shutdown Dropping Dropping
1
operation* type type
Automatic Replace Automatic Automatic
recovery fuse recovery recovery
2Arms 0.315Arms 1Arms 0.5Arms
or below or below or below or below
Shutdown Shutdown Shutdown Shutdown
3 3
type type* type*
60 V or 25 V or 10 V or
below below below
Revision A
Output 6
+42V
15~44V
+1.5V
1.350~1.650V
0.8A
0.8A
0~1.2A
30mVpp Typ.
100mVppTyp.
Output 5 Output 6
2 2 2
(+3.3V)* (+1.5V)*
Shutdown Shutdown
type type type
Restart Restart
0.1Arms 0.1Arms
or below or below
Shutdown Shutdown
type type type
20 V or 9 V or 4.5 V or
below below below
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