Epson DLQ-3000 Service Manual page 107

Motor
Number
CN 4
5,6
(MOTOR
ASSY.,CR)
11
(MOTOR
CN 3
7
(MOTOR
I
I
(Set meter Diodes. Check POWER OFF.)
Check to base to collector.
Check to base to emitter.
Reverse leads and test again.
CN !5
(DETECTOR
Change the LEVER, G,ADJUST position.
ASSY.,PG)
CN 5
Place one lead on pin 10 and the other lead on pin 11.
(DETECTOR
Change the LEVER, RELEASE position.
Place one lead on pin 13 and the other lead on pin 4
CN 3
or 12.
(DETECTOR
Set the Color Ribbon Cartridge on the CARRIAGE
CN 3 Place one lead on pin 14 and the other lead on pin 12.
Set the Film Ribbon Cartridge on the CARRIAGE
(DETECTOR
Place one lead on pin 1 and the other lead on pin 2.
(COVER OPEN
Open and close the COVER ASSY.,PRINTER.
SENSOR for +35V)
CN 13 Place one lead on pin 10 and the other lead on pin 4,5
(COVER OPEN or 6.
Open and close the COVER ASSY.,PRINTER.
SENSOR for +5V)
Table 5-5. Motor Coil Resistance
Set Meter to ohms. Disconnect
otor from BOARD ASSY. MAIN
and check it with Printer @ower
Place one lead on pin 5 or 6, and the
1,2,3,4
other lead on each of the two check
the two motor phase.
Place one lead on pin 11, and the
7,8,9,10 other lead on each of the two check
the two motor phase.
Place one lead on pin 7, and the
8,9,10,11 other lead on each of the two check
the two motor phase.
Table 5-6. Printhead Driver Test Point
Test Method
Table 5-7. Sensor Test Point
Test Method
(Set Meter to Ohms. Check Printer POWER OFF.)
Place one lead on pin 8 and the other lead on pin 9.
Test Method
OFF.)
I
Meter Reading
Not open and not shorted
from base to collector, base
to emitter.
Troubleshooting
Meter
Reading
I
Meter should
toggle between
open and short.
Meter should
toggle between
open and short.
Meter should
toggle between
open and short.
Meter should
toggle between
open and short.
Meter should
toggle between
open and short.
Meter should
toggle between
open and short.
5-11