Lexmark C77x Service Manual page 346

C77/c78 series
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5061
See
"System board" on page
Connector
JCY1
Yellow and cyan video to printheads
JHD1
Optional hard disk drive
JM1
Fuser fan
JCVR1
Cover open switch
5-14
Service Manual
5-7.
Pin no.
Signal
1
C_DATA+
2
Ground
3
C_DATA-
4
Y_THERMISTOR
5
Ground
6
Y_LENA
7
+5 V dc (through fuse F12 and safety switches at
J10)
8
Ground
9
C_LPWM
10
Y_LADJ
11
Ground
12
Ground
13
C_LADJ
14
Y_LPWM
15
Ground
16
+5 V dc (through fuse F12 and safety switches at
J10)
17
C_LENA
18
Ground
19
C_THERMISTOR
20
Y_DATA-
21
Ground
22
Y_DATA+
1
FAN1_STALL_IN
2
Ground
3
FAN1_CNTRL
4
+24V_LEFTSIDE
5
Ground
1
+5 V dc (direct from low voltage power supply)
2
Ground
3
VDO_ERR (+5 V dc to J8 and J12)

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