Brother HL-4000CN Service Manual page 312

A B
2.6.2 Tray2 paper stacking
TRAY2 SENSOR AND SWITCHES
1
OPERATOR
LOADED PAPER
2
B
3
DRIVE PWB
PL15.1
J82
3
GRY
DC COM
4
(CH1.1)
DOUBLE
PLUG
J8220
5 3
GRY GRY
+3.3VDC
(CH1.1)
6 2
GRY GRY
DC COM
(CH1.1)
5
8
GRY
+3.3VDC
(CH1.1)
9
6
GRY
DC COM
(CH1.1)
C D
A
TRAY2 SIZE SWITCH
ASSY
PL17.2
SW1
SW2
SW3
J821
GRY 2
TRAY2 NO PAPER
DOUBLE
SENSOR
PLUG
PL17.3 J822 P8220 3 J8220
1 1
GRY
A
P8220 J822 3
1
2 2
TRAY2 LOW PAPER
SENSOR
PL17.3
J823
GRY
1
B
J823
3
GRY
2
GRY
VI-15
E F
1
DI-20
DRIVE
CONNE
PWB
TRAY2
PL15.1 CTOR
SIZE SWITCH1
J821 J82
ON(L) +3.3VDC J81 J810 P810
1 11 B3 B11
4 GRY GRY
YEL YEL YEL
TRAY2
SIZE SWITCH2
ON(L) +3.3VDC
2 12 B2 B12
3
GRY
GRY YEL YEL YEL
TRAY2
SIZE SWITCH3
ON(L) +3.3VDC
4 13 B1 B13
1
GRY
GRY YEL YEL YEL
DI-12
TRAY2 NO PAPER
SENSED(H) +3.3VDC
7 16 A11 A4
GRY
YEL YEL YEL YEL
3 B11 B3
YEL YEL YEL YEL
DC COM
DI-16
TRAY2 LOW PAPER
SENSED(H) +3.3VDC
10 18 A9 A6
GRY YEL YEL YEL YEL
Refer the relationship
1
between the status of TRAY2
SIZE SWITCH ASSY and display
of Diagnostic code "DI-20".
2.6 Paper Supplying
G H J
TRAY2
PAPER STACK
POSITIONED
MCU AND HVPS PWB
PL15.1
2
+3.3VDC
DOUBLE
TRAY2
PLUG
SIZE SWITCH1
CONTROL
J210 P210 J21 SIGNEL
LOGIC
A3 A11 16
YEL YEL YEL 2
+3.3VDC
TRAY2
SIZE SWITCH2
SIGNEL
A2 A12 15
YEL YEL YEL
2
+3.3VDC
TRAY2
SIZE SWITCH3
SIGNEL
A1 14
A13
YEL YEL YEL
2
+3.3VDC
TRAY2
NO PAPAR
SENSED
SIGNEL
B11 B3 11
YEL YEL
DI-34
+3.3VDC
TRAY
MODULE
SET(H)
+3.3VDC
A11 A3 24
YEL YEL Imaginary Line
2
+3.3VDC
B9 B5 9
YEL YEL
Paper Size Display
SW1 SW2 SW3
LEGAL14"
ON ON ON
LEGAL13"
ON ON OFF
EXECUTIVE
ON OFF ON
B5
ON OFF OFF
A4 OFF ON ON
LETTER OFF OFF ON
A5 OFF ON ON
No Cassette OFF OFF OFF
2.7.3
2.6.4
2.6.4
2.6.4
2.6.4
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01
02
03
04
06
07