EPSON Stylus Pro 7400/7800/9400/9800
Revision B
Operating Principles
Outline of Power Supply Circuit Board
168
2.4 Outline of Power Supply Circuit Board
The 100 V AC power from the wall outlet is supplied via the power cable, an accessory
of Stylus Pro 7600/9600, into the Inlet of the printer and to the Power Supply Circuit
Board.
The power switch constitutes a secondary power switch system. The secondary power
switch system operates as follows: even with the power switch turned off, the Power
Supply Circuit Board is operating by a slight power as long as the power cable is
connected.
The Power Supply Circuit Board is equipped with a fuse for overcurrent protection.
The rating of the fuse is:
There are three control signals between the C594 MAIN Board and the Power Supply
Circuit Board as shown in the table below.
C A U T I O N
Even after the power switch is turned off, the Power Supply Circuit
Board does not stop operating immediately, but power is kept on
until the ink system ending sequence is complete.
Do not disconnect the power cable or do not shut off power by
turning off any power switch other than that on the printer.
Table 2-9. Fuse Rating
Fuse Rating
250 VAC/6.3 A
Table 2-10. Explanation of Operation
Signal Name
Function
REM_ON
(MAIN
→
Power Supply)
Operating
Turned ON/OFF by C594 MAIN Board.
• When these terminals are shorted, the drive system
power supplies 24 VDC and 42 VDC become inactive.
Off
• When these terminals are open (= H), the drive system
power supplies 24 VDC and 42 VDC become 0 VDC.
• The 5 VDC power is not controlled with these
terminals.
AC_OFF
(MAIN
←
Power Supply)
Operating
(= H)
When each output from the Power Supply Circuit Board
has become inactive because of turning off of the power
switch or when the input voltage has dropped below the
rated voltage value, “H” signal is sent to the C594 MAIN
Board.
Off
(= L)
The power switch is turned on and the Power Supply
Circuit Board Unit starts operating so that each output
becomes active.
“L” signal is sent to the C594 MAIN Board.
POW_ON/OFF
(Panel /MAIN
→
Power Supply)
Operating
Connected to the power switch on the Panel Unit.
• These terminals are shorted when the switch is ON.
The Power Supply Circuit Board becomes active.
Not operating • These terminals are open when the switch is OFF. The
Power Supply Unit keeps operating for several seconds
and then turns off.
Содержание Stylus Pro 7400
Страница 1: ...EPSONStylusPro7400 7800 9400 9800 Large Format Color Inkjet Printer SERVICE MANUAL SEIJ05002 ...
Страница 10: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 147: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 170: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 207: ...C H A P T E R 4 DISASSEMBLY ASSEMBLY ...
Страница 292: ...C H A P T E R 5 ADJUSTMENT ...
Страница 373: ...C H A P T E R 6 MAINTENANCE ...
Страница 380: ...C H A P T E R 7 APPENDIX ...
Страница 385: ...Model PX 7500 7500S 9500 9500S Board C594 Main Sheet 1 of 4 Revison G ...
Страница 386: ...Model PX 7500 7500S 9500 9500S Board C594 Main Sheet 2 of 4 Revison F ...
Страница 387: ...Model PX 7500 7500S 9500 9500S Board C594 Main Sheet 3 of 4 Revison F ...
Страница 388: ...Model PX 7500 7500S 9500 9500S Board C594 Main Sheet 4 of 4 Revison E ...
Страница 389: ...Model PX 7500 7500S 9500 9500S Board C594 SUB Sheet 1 Revison C ...
Страница 390: ...Model PX 7500 7500S 9500 9500S Board C594 SUB B Sheet 1 Revison E ...
Страница 391: ...Model PX 7500 7500S 9500 9500S Board C594 SUB C Sheet 1 Revison D ...
Страница 392: ...Model PX 7500 7500S 9500 9500S Board C594 PNL Sheet 1 Revison D ...
Страница 395: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 02 R ev 01 C594 CAS E 021 152 150 152 152 152 151 ...
Страница 396: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 03 R ev 01 C594 E LE C 011 202 201 200 ...
Страница 397: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 04 R ev 01 C594 E LE C 021 203 204 ...
Страница 398: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 05 R ev 01 C594 POWE 011 300 301 302 ...
Страница 403: ...PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 10 R ev 01 C594 ME CH 051 700 701 X15 700 ...
Страница 407: ...900 901 906 901 905 903 903 904 PX 7500 7500S E PS ON S TYLUS PR O 7400 7800 No 14 R ev 01 C594 ME CH 091 902 ...
Страница 409: ...PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 02 R ev 01 C595 CAS E 021 150 151 152 152 152 152 ...
Страница 410: ...R ev 01 C595 E LE C 011 200 201 202 PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 03 ...
Страница 411: ...PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 04 R ev 01 C595 E LE C 021 204 203 ...
Страница 412: ...PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 05 R ev 01 C595 POWE 011 300 302 301 ...
Страница 417: ...PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 10 R ev 01 C594 ME CH 051 701 X15 700 700 ...
Страница 421: ...900 901 906 901 905 903 903 904 PX 9500 9500S E PS ON S TYLUS PR O 9400 9800 No 14 R ev 01 C595 ME CH 091 902 ...