Service manual

EPSON Stylus COLOR 480 Revision B
Appendix Connector Summary 129
7.1 Connector Summary
7.1.1 Major Component Unit
The Major component units of this printer are as follows.
o Main Board (C367MAIN or C367MAIN-B)
o Power Supply Board (C367PSB/PSE)
The figure below shows how these components connect.
Figure 7-1. Connection of the Major Components
See the following tables for the connector summary for the C367MAIN board and each
connector’s pin alignment.
CN4 CN2 CN1
Parallel I/F
CR Motor
Printhead
PF Motor
C367PSB
C367MAINC367MAIN/
MAIN-B
CN3
CN6
CN5
HP/PE/BCO/
CCO Sensor
C367PSB/PSE
CN2
CN1
AC Power
Printer Mechanism
Table 7-1. Connector Summary for C367MAIN/MAIN-B
Connector Function Table to refer to
CN1 For connection with the HP/PE/BCO/CCO sensor Table 7-2
CN2 For connection with the CR motor Table 7-3
CN3 For connection with the PF motor Table 7-4
CN4 For connection with the printhead Table 7-5
CN5 For connection with the power supply board Table 7-6
CN6 For connection with the parallel interface
Refer to “IEEE-1284
Parallel I/F (Forward
Channel)” on page 21
Table 7-2. CN1 - HP/PE/BCO/CCO Sensor
Pin Signal Name I/O Function
1 HPPE In Sensor detect signal
2 GND --- Ground
3 HPPEV --- Sensor Power Supply
Table 7-3. CN2 - CR Motor
Pin Signal Name I/O Function
1 CRA Out Phase drive signal (A)
2 CRB Out Phase drive signal (-A)
3 CR-A Out Phase drive signal (B)
4 CR-B Out Phase drive signal (-B)