Lexmark C540n Service Manual page 243

Controller board connectors (continued)
Note: SW indicates voltage is switched on during a print cycle, otherwise voltages are taken with printer
at Ready state (door closed) and cables plugged in.
Connector
JPH1
Printhead flat cable connector
(continued)
JSC1
SC cartridge
Pin no. Signal
22 D_VDO_2+
23 D_VDO_2–
24 Ground
25 D_VDO_5+
26 D_VDO_5–
27 Ground
28 D_VDO_1+
29 D_VDO_1–
30 Ground
31 D_VDO_4+
32 D_VDO_4–
33 Ground
34 D_VDO_0+
35 D_VDO_0–
36 Ground
37 I2CCLK_PH
38 VDO_LADJ1, +3.3 V dc
39 I2CDATA_PH
40 VDO_LADJ0, +3.3 V dc
1 +3.3 V dc
2 DATA_SC, +3.3 V dc
3 SCK_SC
4 Ground
5025-2xx, 4xx
Connector locations
5-9
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