Specifications

Appendix B
Troubleshooting
The tables below provide the test points you ca.u use to check the motors, printhead,
and drivers for the LQ-570+/107&.
I-
Connector
CN6
CN7
CN6
(Thermistor)
Table B
6, 7, 6
112, 3, 4, 5,
9,10,11, 12,
13,14,15
-
16 and 17
c (
1
I
0. Printhead Test Points
Test Method
(Power off. Set Meter to Ohms)
Place one lead on one of the commons
45.5 ohms
and the other lead on each of the test
+/- 3.2 ohms
pins.
(at 770 F, 250 C)
Place one lead on one of the commons
and the other lead on each of the test
pins.
Place one lead on each of the thermistor
pins.
Resistance
45.5 ohms
+I- 3.2 ohms
(at 770 F, 254 C)
SK ohms (decreases
as temperature
increases)
Table B-11. Motor Test Points
Test Method
Connector
Commons Test Pins (Power off. Set Meter to Ohms)
Resistance
CN4 5
1,2, 3, 4
Place one lead on one of the commons
19 ohms
CR Motor and the other lead on each of the test
+I- 7 ohms
pins.
(at 770 F, 250 C)
CN5 6
192
Place one lead on one of the commons
79 ohms
PF Motor and the other lead on each of the test +/- 5 ohms
5
3, 4
pins. (at 770 F, 250 C)
Note:
Common pins may be reversed for the PF motor.
If you do not obtain a proper reading with one
common, try the other common. (If you leave CN5 connected when you make the check, pins 5 and 6
are tied together.)
B-20
Epson LQ-570+/1 070+