Lexmark X734DE - Page 574

5-4 Service Manual
7526
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J5
Internal Service Port (ISP)
1Ground
2 USBOUT+
3 USBOUT-
4Ground
5 USBIN+
6 USBIN-
7Ground
8A0
9 RESET
10 +5 V dc
11 I2C_DAT
12 +5 V dc
13 I2C_CLK
14 +5 V dc
J6
Feedback Vortext UART MDC
1Ground
2 MDC_RXD
3 MDC_TXD
J7
AIO Flatbed CCD interface
1 CS_CUHD_R
2Ground
3 SDI_CUHD_R
4Ground
5 SDO_CUHD_R
6Ground
7 CLK_CUHD_R
8Ground
9 DSPIRQ
10 +5V_AIO
11 POR_CUHD_R-
12 +3.3 V dc
13 +3.3 V dc
14 NC
J9
AIO UICC serial port
1Ground
2UI_RXD
3UI_TXD
4+5 V dc
System board listing (continued)
See “System board” on page 5-2.
Connector Pin # Signal Pin # Signal