Canon PIXMA MP170, Service Manual

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2-3. MP450 Operation Panel Board R
J1 (Operation board L)
J2 (Scanner unit)
2-4. MP170 Operation Panel Board
J1 (Logic board)
J2 (Scanner unit)
No. Signal name Function
1 GND Gound
2 VSEN Sensor power supply
3 HPS Scanner HPS
4 SW_STP Stop/Reset button signal
5 to 7 CA4 to 6 Key scan column address
8 to 11 RA4 to 7 Key scan row address
No. Signal name Function
1 GND Ground
2 VSEN Sensor power supply
3 HPS Scanner HPS
No. Signal name Function
1 DGND Ground
2 VSEN Sensor power supply
3 HPS Scanner HPS
4 POWER_SW Power button
5 STOP/RESET_SW Stop/Reset button
6 LED_POW Power LED output
7 LED_ERR Alarm LED output
8 5V +5V
9 - Not used
10 PN_TXD
Panel transmit signal (from the logic board to the
panel board)
11 PN_RXD
Panel transmit signal (from the panel board to the
logic board)
12 PN_DCLK
Panel clock
13 PANEL_RSTX Reset signal
14 3.3V +3.3V
No. Signal name Function
1 DGND Ground
2 VSEN Sensor power supply
3 HPS Scanner HPS
3-9