Lexmark X500n Service Manual - Page 208
Engine controller board connections, HVCN-21 pin. Connects to HVPS, Voltage / Signal
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7100-XXX Engine controller board connections HVCN-21 pin. Connects to HVPS Pin # Voltage / Signal Pin # 1 HVUCNCHK-N 12 2 PGND 13 3 ID [PGND] 14 4 FCBVPWM-N 15 5 THV-I 16 6 DBV [KY] PWM-N 17 7 THVPWM-N 18 8 DBV [MC] PWM-N 19 9 THVRON 20 10 CBVPWM-N 21 11 BRVERR LCN-24 Pin. Connects to LSU assembly Pin # Voltage / Signal Pin # 1 +5V - 1R 13 2 LCONT-1 14 3 LREADY 15 4 LCONT2 16 5 SGND 17 6 LDREF-4 18 7 VIDEO-N 19 8 LDREF-3 20 9 VIDEO-P 21 10 LDREF-2 22 11 SGND 23 12 LDREF-1 24 Voltage / Signal BRVPWM-N PWMON-N DCVP-N BRVON-N +24V -1D +24V -1D +24V -1D PGND PGND PGND Voltage / Signal BDT-P LDREF-0 BDT-N VCC SGND SGND SCMRDY-N SCMCLK PGND SCMON-N +24V-1 +3.3V 5-10 Service Manual
5-10
Service Manual
7100-XXX
Engine controller board connections
HVCN-21 pin. Connects to HVPS
Pin #
Voltage / Signal
Pin #
Voltage / Signal
1
HVUCNCHK-N
12
BRVPWM-N
2
PGND
13
PWMON-N
3
ID [PGND]
14
DCVP-N
4
FCBVPWM-N
15
BRVON-N
5
THV-I
16
+24V -1D
6
DBV [KY] PWM-N
17
+24V -1D
7
THVPWM-N
18
+24V -1D
8
DBV [MC] PWM-N
19
PGND
9
THVRON
20
PGND
10
CBVPWM-N
21
PGND
11
BRVERR
LCN-24 Pin. Connects to LSU assembly
Pin #
Voltage / Signal
Pin #
Voltage / Signal
1
+5V - 1R
13
BDT-P
2
LCONT-1
14
LDREF-0
3
LREADY
15
BDT-N
4
LCONT2
16
VCC
5
SGND
17
SGND
6
LDREF-4
18
SGND
7
VIDEO-N
19
SCMRDY-N
8
LDREF-3
20
SCMCLK
9
VIDEO-P
21
PGND
10
LDREF-2
22
SCMON-N
11
SGND
23
+24V-1
12
LDREF-1
24
+3.3V