Epson EPL-N1600 Service Manual page 169

EPSON EPL-N1600
HPS - CONTROLLER
Rev. A
Table 7-2. Signal Names / HPS - Controller
Signal Name
/HEAT Control signal which switches on and off the Heater Quartz.
The Heater Quartz is switched on when this signal is Low and
off when High.
NO TONER Signal from the Sensor Toner in the Cartridge Assembly EP.
(CRU). This signal is Low when toner is detected in the
Cartridge Assembly EP. (CRU) and High when the toner is not
detected (running out).
/PRE REG Signal from the Sensor Pre-reg. in the P/H section. This signal
is High when paper is not detected by the Sensor Pre-reg. and
becomes Low when detected.
/CR Control signal which switches on and off the Bias Charge
voltage (DC component) applied to the BCR. The Bias Charge
voltage (DC) is not applied when this signal is High and applied
when Low.
/FAN Switches the speed of the Fan IOT between High and Low.
When this signal is Low, the driving voltage to the Fan (FAN) is
24 VDC, and the Fan rotates at High speed.
When this signal is High, the driving voltage to the Fan (FAN) is
12 VDC, and the Fan rotates at Low speed.
/DB AC Control signal which switches on and off the Development Bias
voltage (AC component) applied to the Mag. Roll. The
Development Bias voltage (AC) is not applied when this signal
is High and applied when Low.
/DB DC Control signal which switches on and off the Development Bias
voltage (DC component) applied to the Mag. Roll. The
Development Bias voltage (DC) is not applied when this signal
is High and applied when Low.
Fan Alarm Monitor signal (Fan Alarm) from the Fan IOT which rises High
when the Fan stops.
5V-LD +5V power supply for driving the LD (interrupted when the Exit
Cover is open)
NO PAPER 1 Signal from the Sensor No-paper for Cassette 1. This signal is
Low when paper is detected and becomes High when paper is
not detected (the Cassette is empty).
/REG IN Signal from the Sensor Registration. This signal is High when
paper is not detected by the Sensor Registration and becomes
Low when detected.
Chapter 7 Appendix
Description
171