Brother HL-3450CN Service Manual page 115

CHAPTER 4 STRUCTURE OF SYSTEM COMPONENTS
(3) Connector Pin Assignment
ACN1
MoLex: 53313-2815
Pin # Signal Name Interface
1 +5V-1 +5V-1 Output
3 +5V-1 +5V-1 Output
5 +5V-D +5V-D Output
7 +5V-D +5V-D Output
9 ACSYNC-N AC Zero-Cross Signal (Open Collector Output)
11 +24V +24V Output Corresponding to Door Switch
13 +5V-1R +5V through the relay when +24V-1 is shut down.
15 HON-N Heater On Signal (Pull-up required)
17 +24V-1 +24V Output through Door Switch
19 +24V-1 +24V Output through Door Switch
21 +24V-1 +24V Output through Door Switch
23 +24V-1 +24V Output through Door Switch
25 PGND Power Ground (+24V type ground)
27 PGND Power Ground (+24V type ground)
ACN1
MoLex: 53324-0710
Pin # Signal Name Interface
1 +5V-1 +5V-1 Output
2 +5V-D +5V-D Output
3 SGND Signal Ground (+5V type ground)
4 +24V-2 +24V-2 Output
5 +24V-2 +24V-2 Output
6 PGND Power Ground (+24V type ground)
7 PGND Power Ground (+24V type ground)
Pin # Signal Name Interface
2 DCOFF2-P +5V-2D OFF Signal
4 SGND Signal Ground (+5V type ground)
6 SGND Signal Ground (+5V type ground)
8 SGND Signal Ground (+5V type ground)
10 SGND Signal Ground (+5V type ground)
12 DCOFF1-P OFF Signal (Pull-up required)
14 ACOFF-P AC Forced Shut-down Signal (Pull-up required)
16 TESTI2 Terminal for Dielectric Strength Test
18 TESTO2 Terminal for Dielectric Strength Test
20 TESTI1 Terminal for Dielectric Strength Test
22 TESTO1 Terminal for Dielectric Strength Test
24 PGND Power Ground (+24V type ground)
26 PGND Power Ground (+24V type ground)
28 PGND Power Ground (+24V type ground)
ACN1
MoLex: 5277-02A
Pin # Signal Name Interface
1 DSW-O +24V Output through Door switch
2 DSW-I +24V Output through Door switch
ACN3
MoLex: 5566-06A
Pin # Signal Name Interface
1 +5V-2 +5V-2 Output
2 +5V-2D +5V-2D Output
3 +5V-2D +5V-2D Output
4 SGND Signal Ground (+5V type ground)
5 SGND Signal Ground (+5V type ground)
6 SGND Signal Ground (+5V type ground)
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