Epson STYLUS Scan 2500 Service Manual page 145

EPSON Stylus Scan 2500
Table 7-7. Connector Pin Assignment-CN8
Pin No. Signal Name I/O
1 PF-A O
2 PF-B O
3 PF-/A O
4 PF-/B O
Table 7-8. Connector Pin Assignment-CN9
Pin No. Signal Name I/O
1 COB I
2 COC I
3 THM I
4 GND O
5 LAT O
6 GND O
7 SI6 O
8 SI5 O
9 SI4 O
10 SI3 O
11 SI2 O
12 SI1 O
13 GND O
14 CLK O
15 GND O
16 NCHG O
17 GND O
18 VDD O
19 GND2 O
20 GND2 O
21 GND2 O
22 GND2 O
23 COM O
24 COM O
Appendix
Function
Phase drive signal (A)
Phase drive signal (B)
Phase drive signal (/A)
Phase drive signal (/B)
Function
I/C Black detect
I/C Color detect
Thermometer detect system
Ground
Head data latch pulse output
Ground
Head data output (6)
Head data output (5)
Head data output (4)
Head data output (3)
Head data output (2)
Head data output (1)
Ground
Clock pulse for head data transfer
Ground
Head all on pulse output
Ground
Logic power supply (+5V)
Ground
Ground
Ground
Ground
Head drive power supply
Head drive power supply
Table 7-8. Connector Pin Assignment-CN9 (cont.)
Pin No. Signal Name
25 COM
26 COM
27 VHV
Table 7-9. Connector Pin Assignment-CN10
Pin No. Signal Name
1 +12V
2 +24V
3 GND
4 +24V
5 GND
6 GND
7 +42V
8 +42V
9 +3.3V
10 +3.3V
11 +5V
12 +5V
13 GND
14 GND
15 GND
16 FAN42
17 SWO
18 PSC
Table 7-10. Connector Pin Assignment-CN11
Pin No. Signal Name
1 HP
2 GND
3 HPWR
Connector
I/O Function
O Head drive power supply
O Head drive power supply
O Head drive voltage control signal
I/O Function
I Mechanism drive power supply
I Mechanism drive power supply
I Ground
I Mechanism drive power supply
I Ground
I Ground
I Mechanical drive power supply
I Mechanical drive power supply
I Logic power supply
I Logic power supply
I Logic power supply
I Logic power supply
I Ground
I Ground
I Ground
O Not needed
I
O Power supply switch output signal
I/O Function
I Sensor detect system
O Ground
O Sensor power supply (+5V)
Revision A
144