Brother HL-3450CN Service Manual page 98

(d) Connector Pin Assignment
The connector in the printer to connect to the controller board is type 128A-064S2B-
L14A(DDK) or the equivalent.
Table 4-2: Connector Pin Assignment
Pin No. Signal Name
1A PSGND
2A PSGND
3A PSGND
4A PSGND
5 PSGND
6A PSGND
7A PSGND
8A PSGND
9A VIDEO-P
10A RET (GND)
11A HSYNC-P
12A ID2-N
13A RET (GND)
14A RET (GND)
15A RET (GND)
16A RET (GND)
17A RET (GND)
18A RET (GND)
19A RET (GND)
20A RET (GND)
21A ID1-N
22A RET (GND)
23A Reserve
24A Reserve
25A RET (GND)
26A RET (GND)
27A RET (GND)
28A RET (GND)
29A RET (GND)
30A RET (GND)
31A RET (GND)
32A RET (GND)
Pin No.
1B +5V
2B +5V
3B +5V-D
4B +5V-D
5B +5V-D
6B +5V-D
7B +5V-D
8B +5V-D
9B VIDEO-N
10B Reserve
11B HSYNC-N
12B Reserve
13B VSYNC-N
14B Reserve
15B STATUS
16B IREADY-N
17B Reserve
18B COMMAND
19B PRREQ-N
20B Reserve
21B Reserve
22B KEY_STATUS-N
23B Reserve
24B Reserve
25B Reserve
26B Reserve
27B Reserve
28B Reserve
29B Reserve
30B Reserve
31B Reserve
32B Reserve
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HL-3450CN SERVICE MANUAL
Signal Name