Epson Stylus PHOTO RX640 Service Manual page 84

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