6-28
FS-1900
6-1-4 Circuit board terminal voltages
(1) Engine board
Connector
Pin# Signal
I/O
Voltage
Function
YC201
A1
GND
-
-
Signal ground
B1
GND
-
-
Signal ground
A2
+5V1
I
5 V DC
Power supply for main board
B2
+5V1
I
5 V DC
Power supply for main board
A3
+5V1
I
5 V DC
Power supply for main board
B3
SIOUT
O
3.3 V/0 V DC
Serial data output signal
A4
SDIR
O
3.3 V/0 V DC
Serial line direction signal
B4
SCLKN
O
3.3 V/0 V DC (Pulse)
Serial clock signal
A5
EGIR
O
3.3 V/0 V DC
Engine interrupt request signal
Interrupt/Not Interrupt
B5
SBSY*
O
0 V/3.3 V DC
Serial line busy signal, Busy/Not busy
A6
VDFON1
O
0 V/3.3 V DC
Forced video data output signal, On/Off
B6
SOIN
I
3.3 V/0 V DC
Serial data input signal
A7
VSREQ*
O
0 V/3.3 V DC
Vertical synchronized request signal Request/Not request
B7
SYSRES*
O
0 V/3.3 V DC
System reset signal, Reset/Not reset
A8
GND
-
-
Signal ground
B8
PDOUT*
O
0 V/3.3 V DC (Pulse)
Pin photo diode sensor [board], Laser beam detecting signal
A9
GND
-
-
Signal ground
B9
GND
-
-
Signal ground
A10 GND
-
-
Signal ground
B10 VDO+
I
1.02 to 1.38 V DC
LVDS video data signal (positive)
A11 GND
-
-
Signal ground
B11 VDO-
I
1.38 to 1.02 V DC
LVDS video data signal (negative)
A12 FPDIR
O
3.3 V/0 V DC
Communication direction signal withLCD controller board
B12 GND
-
-
Signal ground
A13 +3.3V1
O
3.3 V DC
Power supply for LCD controller board
B13 FPCLK
O
3.3 V/0 V DC (Pulse)
Communication data clock signal with LCD controller board
A14 GND
-
-
Signal ground
B14 FPDATA I/O
3.3 V/0 V DC (Pulse)
Communication data signal with LCD controller board
Summary of Contents for Mita FS-1900
Page 1: ...SERVICE MANUAL Published in Dec 01 Revision 1 1 Laser printer...
Page 9: ...Chapter 1 P r o d u c t I n f o r m a t i o n...
Page 27: ...Chapter 2 Installation Operation...
Page 53: ...Chapter 3 Maintenance Adjustments...
Page 76: ...Chapter 4 O p e r a t i o n O v e r v i e w...
Page 114: ...Chapter 5 D i s a s s e m b l y...
Page 151: ...Chapter 6 T r o u b l e s h o o t i n g...
Page 198: ...Appendix A D i a g r a m s...
Page 208: ...Appendix B S t a t u s P a g e...
Page 215: ...Appendix C I n t e r f a c e...
