Print Head Resistance Measurement - Acroprint ES700 Service Manual

6-3. Print Head Resistance Measurement

Measure the Print Head resistance at the terminals with the FPC harness inserted to the CN4.
Measuring point Target resistance
1 8
2 8
3 8
4 8
5 8
6 8
7 8
9 8
10 8
11 8
12 8
Note: If the Print Head resistance is smaller than
Open
2.35 ± 0.2
2.35 ± 0.2
2.35 ± 0.2
2.35 ± 0.2
2.35 ± 0.2
Short
2.35 ± 0.2
2.35 ± 0.2
2.35 ± 0.2
2.35 ± 0.2
the value shown on the left, there is a
possibility that the Print Head pin driver
is broken. In that case, replace Print Head
and check drivers 2 - 10.
Q
12 8, 7
6-3
1