Epson LQ-1050 Technical Manual page 183

NOTES: 1. These voltage are measured when printer is in waiting mode.
2. Input voltage is 120V AC.
Table 5-6. MONPSE Board Environmental Condition (Reference Value)
NOTES: 1. These voltage are measured when printer is in waiting mode.
2. Input voltage is 240V AC.
I
x + r x
-
2 3 4 56 78 910
I
HDn (n = 1 to 24) corresponds to the pins in the printhead. The resistance of COM-HDn is measured
to check whether the printhead coil is normal or not. The resistance value of the head coil is 29 &
2.0 ohms under normal conditions (at 25"C).
Power Supply Line
+ 3 5 - G
P
+ 1 2 - GND
– 1 2 - GND
+ 5 - GND
Power Supply Line
+ 3 5 - GP
+ 12 - GND
– 1 2 - GND
+ 5 - GND
CN 15
23456 789 10II121314156 17
x +--g+
I
0 0 0 0 0
0
-
3
N
I 1213 W 15
I
Fig. 5-3. Printhead Coil Resistance
Output Voltage [V]
35.5 35.5
9.7 9.7
– 9 . 9 – 10.0
5.1
5.1
Output Voltage [V]
35.4 35.4
11.8
– 12.1 – 12.1
5.1 5.1
-
MECHANISM REAR SIDE
5-11
35.4
9.8
– 10.0
5.1
35.4
11.8
– 12.2
5.1