Epson Stylus Photo RX640 series, Service Manual

Page: 84 / 103

EPSON Stylus PHOTO RX640/650 Revision A
Appendix Connectors 84
†
Printhead FFC
†
CR Motor
†
PF Motor
†
PE Sensor
†
APG HP Sensor
†
CD-R Tray / Mode Sensor
†
PF Encoder
†
Power cable connector
†
Scanner HP sensor connector
†
Scanner motor connector
Main Board Side Head PCB Side
CN2 CN1 CN2 CN1
Pin No. Signal Signal Pin No. Pin No. Signal Signal Pin No.
LEDON 28 LEDON
PW 27 PW
GND 26 GND
1 SI3 COO 25 25 SI3 COO
2 GND CSCK 24 24 GND CSCK (CSIC)
3 SI2 CVDD 23 23 SI2 CVDD (PW Sensor)
4 GND CSDA 22 22 GND CSDA
5 SI1 GND 21 21 SI1 GND
6 GND CRST 20 20 GND CRST
7 SCK GND 19 19 SCK GND
8 GND N.C 18 18 GND
9 CH ENA 17 17 CH ENA
10 NCHG EVDD 16 16 NCHG EVDD (
Encoder
)
11 VDD ENB 15 15 VDD ENB
12 LAT GND 14 14 LAT GND
13 XHOT N.C 13 13 XHOT
14 GND TH 12 12 GND TH 1
15 VHV VDD2 11 11 VHV VDD2 2
16 GND GND 10 10 GND GND 3
17 COMC GND2C 9 9 COMC GND2C 4
18 GND2C COMC 8 8 GND2C COMC 5
19 COMC GND2C 7 7 COMC GND2C 6
20 GND2B COMB 6 6 GND2B COMB 7
21 COMB GND2B 5 5 COMB GND2B 8
22 GND2B COMB 4 4 GND2B COMB 9
23 COMA GND2A 3 3 COMA GND2A 10
24 GND2A COMA 2 2 GND2A COMA 11
25 COMA GND2A 1 1 COMA GND2A 12
Pin No. Signal on Main Board Signal on Motor Side Remarks
1 PRN-CR A A (+)
2 PRN-CR B B (-)
Pin No. Signal on Main Board Signal on Motor Side Remarks
1 PRN-PF B A (+)
2 PRN-PF A B (-)
Pin No. Signal on Main Board Signal on Mechanism Side Remarks
1 PRN-PE SIG
2 PRN-PE GND
3 PRN-PE VCC
Pin No. Signal on Main Board Signal on Mechanism Side Remarks
1
APG-HP SIG
2 APG-HP GND
3 APG-HP VCC
Pin No. Signal on Main Board Signal on Mechanism Side Remarks
1 CDR-MD SIG CD-R mode detection
2 CDR-MD GND
3 CDR-TRY SIG CD-R Tray detection
4
CDR-TRY GND
Pin No. Signal on Main Board Signal on Mechanism Side Remarks
1 PF-ENC GND CD-R mode detection
2
PF-ENC ENCB
3 PF-ENC EVDD CD-R Tray detection
4 PF-ENC ENCA CD-R Tray detection
5 PF-ENC GND
Pin No. Signal Connected to Function
1 +42V - +42V
2 GND - GND
3 PSC - Power supply control
Pin No. Signal Connected to Function
1
SNS_IN SCHP (E01A62CA) Input to sensor
2
GND - GND
3
SNS_LED +3.3V Power to LEDs
Pin No. Signal Connected to Function
1 SCN_BX OUT4B (A6627SJP-T) Motor BX
2 SCN_AX OUT3B (A6627SJP-T) Motor AX
3 SCN_B OUT4A (A6627SJP-T) Motor B
4 SCN_A OUT3A (A6627SJP-T ) Motor A