Epson Stylus PHOTO 950 Service Manual page 177

EPSON Stylus PHOTO 950
Table 7-8. CN9-Printhead
Pin Signal Name I/O
23 GND -
24 CRST O
25 GND -
26 CSD1 O
27 CVDD O
28 CSCK I/O
29 COO I
30 CSD2 O
31 PW I
Table 7-9. CN10-Printhead
Pin Signal Name
1 SIA
2 SIB
3 GND
4 SIC
5 SID
6 GND
7 SIE
8 SIF
9 GND
10 SIG
11 GND
12 CH
13 VDD
14 SP
15 GND
16 NCHG
APPENDIX
Function
Ground
Reset signal for address counter of CSIC
Ground
CSIC serial data 1
Power for CSIC memory
Clock signal for CSIC read/write
Cartridge out signal
CSIC serial data 2
Detect signal for paper width
I/O Function
O Head data output (A)
O Head data output (B)
- Ground
O Head data output (C)
O Head data output (D)
- Ground
O Head data output (E)
O Head data output (F)
- Ground
O Head data output (G)
- Ground
Charge signal for the Trapizoidal wave-
O
form
- +5V logic power supply
O Select signal for CH signal
- Ground
O All nozzle fire selection pulse
Pin Signal Name
17 ANODE
18 GND
19 COMA
20 GND2A
21 GND2A
22 COMC
23 GND2C
24 GND2C
25 COME
26 GND2E
27 GND2E
28 COMG
29 GND2G
30 GND2G
Pin Signal Name
1
2 GND
3
Pin Signal Name
1
2 GND
Connector Summary
Table 7-9. CN10-Printhead
I/O
Abnormal temperature detection circuit
I
for the nozzles
- Ground
- Head drive pulse (trapezoid waveform)
- Ground 2A
- Ground 2A
- Head drive pulse (trapezoid waveform)
- Ground 2C
- Ground 2C
- Head drive pulse (trapezoid waveform)
- Ground 2E
- Ground 2E
- Head drive pulse (trapezoid waveform)
- Ground 2G
- Ground 2G
Table 7-10. CN11-PE Sensor
I/O
PE I PE signal
- Ground
PEV - +5V logic power supply
Table 7-11. CN12-PG Sensor
I/O
PG1 I PG signal
- Ground
Revision A
Function
Function
Function
177