Epson DLQ-3000+ Service Manual page 167

Epson dlq-3000+ 24-pin dot matrix printer
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DLQ-3000+
Table A-1. Connector Assignment for the Main Components
Board
C210 MAIN board
Sub board
C124 PSB/PSE
board
A-2
CN
Pin
No.
No.
CN1
20
Connector for printhead
CN2
20
Connector for printhead
Connector for ribbon motor, color ribbon cartridge
CN3
20
sensor, color HP sensor, PWS sensor, rear paper
sensor, paper jam sensor, PEWR/L sensors
CN4
18
Connector for CR motor, PF motor, PG motor
CN5
26
Connector for head cooling fan, HP sensor, front
paper sensor, CSF PQ sensor, CSF sensor, Adjust
switch, Release sensor, PGHP sensor
CN6
36
Connector for Type-B interface (See Chapter 1.)
CN7
36
Connector for parallel interface (See Chapter 1.)
CN8
7
Connector for serial interface (See Chapter 1.)
Connector for the electrical circuit board cooling
CN9
2
fan motor
CN10
4
Connector for +5 VDC line
CN11
6
Connector for +35 VDC line
CN12
6
Connector for +35 VDC line
CN13
10
Connector for control panel
Connector for interlock switch (connected to the
2
CN14
common series of the CR motor.)
CN21
Printhead drive signal from CN1
CN24
CN22
Printhead drive signal from CN2
CN25
Ribbon motor drive signal, PEWL/R sensor signal,
CN23
color ribbon cartridge sensor signal, color HP
CN26
signal from CN3
CN23
Rear paper sensor signal to CN3.
CN27
CN23
Paper jam sensor signal to CN3
CN28
CN1
2
Connector for AC input
CN2
10
Connector for DC output (+5 V, CH.B: +35 V)
CN3
6
Connector for DC output (CH.A: +35 V)
Description
Rev. A

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