Epson DLQ-3000 Service Manual page 148

Head coil resistance can be measured between the same numbered common terminal and wire.
Normal resistance value for the printhead coil is:
8.19 ± 0.5 (at 25°C)
Rev. A
Table 5-4. Output Voltage of the PSB/PSE Board
Connector No.
CN2
CN3
Figure 5-8. Printhead Connector Pin Assignment
Pin No. Output voltage
1,2,3 +35 V (CH.B)
4,5,6 Gp B
7,8 GL
9,10 +5 V
1,2,3 +35 V (CH.A)
4,5,6 Gp A
Troubleshooting
5-9