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Engine
Control
Signal Name
PCB
Pin No.
CN008-4
nCHGCTL
CN008-5
nDBCH
CN008-6
nDB
CN008-7
nTRCTL
CN008-8
nTR
CN008-9
+5V
CN008-10 nTECTL
CN009
Engine
Control
Signal Name
PCB
Pin No.
CN009-1
nTESEN
CN009-2
5VGND
Destination
HVPS PCB
CN501-7
HVPS PCB
CN501-6
HVPS PCB
CN501-5
HVPS PCB
CN501-4
HVPS PCB
CN501-3
HVPS PCB
CN501-2
HVPS PCB
CN501-1
Destination
Low Toner
Sensor
CN451-1
Low Toner
Sensor
CN451-2
Signal Waveform
HVPS
+5V
Charge
Enable
0V
Developer
+5V
Charge (+/-)
Enable
0V
+5V
0V
HVPS
+5V
Transfer
Enable
0V
+5V
0V
+5V
Sleep &
Shutdown
0V
+5V
0V
Signal Waveform
+5V
Low Toner
Detection
0V
0V
218
Function
HVPS Charge Control (ON/
OFF)
Developer Charge (+/-
Change)
Developer (+ Voltage PWM
Pulse)
HVPS Transfer Control (+/-
Change)
Transfer (- Voltage PWM
Pulse)
+5 VDC Power Supply
Low Toner LED Control
Function
Low Toner Sensor Signal
Ground
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Table of Contents
Troubleshooting
