1LED0OutLED drive signal (0)
2GND----Ground
3LED1OutLED drive signal (1)
4GND----Ground
5LED2OutLED drive signal (2)
6+5V----Logic power supply
7+5V----Logic power supply
8LED4OutLED drive signal (4)
1CRAOutPhase drive signal(A)
2CR-AOutPhase drive signal (-A)
3CRBOutPhase drive signal (B)
4CR-BOutPhase drive signal(-B)
A-
Rev. A
EPSON Stylus Color400 Service Manual
3
Table A-6. Connector CN7
PinSignal NameI/OFunction
1PFAOutPhase drive signal (A)
2PF-AOutPhase drive signal (-A)
3PFBOutPhase drive signal (B)
4PF-BOutPhase drive signal(-B)
Table A-7. Connector CN8
PinSignal NameI/OFunction
1BCOInBlack ink cartridge detect signal
2CCOInColor ink cartridge detect signal
3THMInThermistor detect signal
4GND---Ground
5LATOutHead data latch pulse output
6GND---Ground
7SI3OutHead data output (3)
8GND---Ground
9SI2OutHead data output (2)
10GND---Ground
11CLKOutHead data output (1)
12GND---Ground
13CLKOutClock pulse for head data transfer
14GND---Ground
15NCHGOutHead all on pulse output
16GND---Ground
17VDD---Logic power supply (+5V)
18GND2---Ground
19GND2---Ground
20GND2---Ground
21COM---Head drive power supply
22COM---Head drive power supply
23COM---Head drive power supply
24VHV---Head drive voltage control signal
25VHV---Head drive voltage control signal
Rev.A
Table A-8. Connector CN10
PinSignal NameI/OFunction
1+42V---Mechanism drive power supply
2+42V---Mechanism drive power supply
3GND---Ground
4GND---Ground
5PSCOutPower supply switch output signal
6GND----Ground
7GND---Ground
8+5V---Logic power supply
Table A-9. Connector CN11
PinSignal NameI/OFunction
1ASFInSensor detect signal
2GND---Ground
3ASFV---Sensor power supply (+5V)