Circuit Board Terminal Voltages; Engine Board - Kyocera FS-1800 Service Manual

6-1-4 Circuit board terminal voltages

(1) Engine board

Connector Pin# Signal
YC201 A1 GND
B1 GND
A2 +5V1
B2 +5V1
A3 +5V1
B3 SIOUT
A4 SDIR
B4 SCLKN
A5 EGIR
B5 SBSY*
A6 VDFON1 O
B6 SOIN
A7 VSREQ* O
B7 SYSRES* O
A8 GND
B8 PDOUT* O
A9 GND
B9 GND
A10 GND
B10 VDO+
A11 GND
B11 VDO-
A12 FPDIR
B12 GND
A13 +3.3V1
B13 FPCLK
A14 GND
B14 FPDATA I/O 3.3 V/0 V DC (Pulse) Communication data signal with LCD
FS-1800/1800N | FS-3800/3800N
I/O Voltage
- -
- -
I 5 V DC
I 5 V DC
I 5 V DC
O 3.3 V/0 V DC
O 3.3 V/0 V DC
O 3.3 V/0 V DC (Pulse) Serial clock signal
O 3.3 V/0 V DC
O 0 V/3.3 V DC
0 V/3.3 V DC
I 3.3 V/0 V DC
0 V/3.3 V DC
0 V/3.3 V DC
- -
0 V/3.3 V DC (Pulse) Pin photo diode sensor [board],
- -
- -
- -
I 1.02 to 1.38 V DC
- -
I 1.38 to 1.02 V DC
O 3.3 V/0 V DC
- -
O 3.3 V DC
O 3.3 V/0 V DC (Pulse) Communication data clock signal with
- -
6-30
Function
Signal ground
Signal ground
Power supply for main board
Power supply for main board
Power supply for main board
Serial data output signal
Serial line direction signal
Engine interrupt request signal
Interrupt/Not Interrupt
Serial line busy signal, Busy/Not busy
Forced video data output signal, On/Off
Serial data input signal
Vertical synchronized request signal
Request/Not request
System reset signal, Reset/Not reset
Signal ground
Laser beam detecting signal
Signal ground
Signal ground
Signal ground
LVDS video data signal (positive)
Signal ground
LVDS video data signal (negative)
Communication direction signal with
LCD controller board
Signal ground
Power supply for LCD controller board
LCD controller board
Signal ground
controller board