6-3
6-3. Print Head Resistance Measurement
Measure the Print Head resistance at the terminals with the FPC harness inserted to the CN4.
Note: If the Print Head resistance is smaller than
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 Q2 - 10.
Measuring point Target resistance
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
1
2
3
4
5
6
7
9
10
11
12
8
8
8
8
8
8
8
8
8
8
8
12
1
8, 7
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