Epson Stylus Pro Service Manual page 94

Troubleshooting
Sensor
CN8 /
PE Sensor
Pin 1 to Pin 2
CN11 /
BCO Sensor
Pin 8 to Pin 7
CN12 /
CCO Sensor
Pin 8 to Pin 7
CN9 /
HP Sensor
Pin 3 to Pin 2
CN12/
TH Sensor
Pin 10 to Pin 11
Sensor
connector (Set Meter to Ohms. Check Printer with
Number
Place one lead on pin 1 and the other lead
PE Sensor
on pin 2. Toggle the sensor by inserting
(CN8)
and removing a sheet of paper.
Place one lead on pin 8 and the other lead
BCO Sensor
on pin 1. Toggle the sensor by inserting
(CN11)
and removing a monochrome ink cartridge.
Place one lead on pin 8 and the other lead
CCO Sensor
on pin 1. Toggle the sensor by inserting
(CN12)
and removing a color ink cartridge.
Error
Status
Paper
Data
Out
Paper out
—
No ink
—
cartridge
Paper jam — Blinks
Maintenance
Blinks Blinks
request
Carriage
Blinks
error
5-2
Table 5-2. Sensor Status
Point Signal Level
H (5 V)
L (GND)
L (GND)
H (5 V)
L (GND)
H (5 V)
Analog data
Table 5-3. Sensor Test Points
Test Method
Power Off.)
Table 5-4. Error Codes
LED
No Ink
Economy Condensed Pause
Cartridge
On — —
— On —
— —
Blinks Blinks
— — —
Stylus Pro Service Manual
Paper exists
No paper (paper end)
Black cartridge exists
No black cartridge
Color cartridge exists
No color cartridge
L At home position (HP)
H Away from HP
Change the pulse width of the charge
pulse for the common driver circuit
Method Reading
Meter should toggle between open
and short (open = active).
Meter should toggle between open
and short.
Meter should toggle between open
and short.
— —
— —
— —
Blinks Blinks
— Blinks
Status
Recovery
Load paper and press
Pause and Load/Eject
buttons.
Install the new ink
cartridge and press the
Pause button.
Load paper and press
Pause and Load/Eject
Buttons.
Service maintenance
request. (Change the
waste ink drain tank
and reset the counter.)
Turn off the printer and
turn it on again.
Rev.A