Engine Board <-> Printhead And Toner Cartridge (3/3) - Lexmark W812 Service Manual

4022-XXX
Engine Board <−> Printhead and Toner Cartridge (3/3)
•
The toner cartridge contains the power circuit for LD +5V. The LD +5V circuit is
established by inserting the toner cartridge. If the toner cartridge is not attached to the
printer, the LD +5V circuit is opened, and the radiation of laser beams stops.
CAUTION: The LD +5V power circuit of the toner cartridge is a safety switch function for
laser beams. To prevent you from being exposed to laser beams, do not short this circuit.
If laser beams enter the eyes directly, the eyes may be injured or you may lose your sight.
Engine Board <−> HVPS <−> Toner Cartridge (BCR and
Mag. Roll), Transfer Roller and Detack Saw (1/3)
P/J13
ENGINE
1
BOARD
3
5
7
8
9
10
11
12
13
14
15
16
17
18
19
20
P/J29
1
2
3
4
5
6
5-24
Service Manual
Safety switch functions of toner cartridge LD +5V
P/J131
HVPS
DBAC
20
DBDC CON
18
CRAC CLK
16
CRAC
14
DTS MON
13
N.C.
12
DTS CON
11
TR CON
10
N.C.
9
TR MON
8
N.C.
7
/TR(-)
6
/CRDC
5
3.3V
4
LG
3
24V
2
24V RTN
1
CRUM DATA
CRUM CLK
5V
SG
JP004
DB
JP003
DB
DB
JP002
CR
CR
JP001
CR
FG
Detack Saw
P/J135 P/J1351
DTS
P/J136
TR
TR
J292
6 6
5 5
4 4
3 3
2 2
1 1
TONER
CARTRIDGE
Mag.
BCR
Roll
Drum
BTR
P/J1361
P293
6
CRUM DATA
5
CRUM CLK
4
5V
3
SG
2
1