Epson Stylus Photo 950, Service Manual

Page: 177 / 191

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