Brother International HL 760 Service Manual - Page 21

Engine, shows, engine, interface, circuit.

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Page 21 highlights

1.3.10 Engine I/O Fig. 2.12 shows the engine interface circuit. \> R28 472 02 2581132 +24V C. -06E) FAN24V C. -06E) FAN16V OA1 2 3 4 MODEL UMGSN 0V R27 183 R26 (000) R25 183 03 2SBI132 DI RD3.9PB D2 RD3.9PB OE -01C) BDN O419) 2 74LS14 B (119) 4 < 3 74LS14 0A4 6 3 4 MODEL UMGSN +24VREP 01 pLDG2aYP_ I °1) I SW COVER RESIST PSENS TONER C. -06E) -0CE) C. -06E) (NE -0CE) LED I LED2 LED3 LED4 C. -05E) LOCK R15 21 R16 1 R13 711_. R14 A -100) FAN -07B) THERM 424VREP HCMPN C. -04C) 0A3 6 D4 155355 +24VRET FAN 0. -09D) -02C) +Bv0 C19 I I 10V 220L.IF OVO +24V3 4-24VREIO I THERM2 C72 T G .3V RI 103 P2 ENGINE 40, FANSPEED 8( +5V 10001.1 2,7‹

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1.3.10
Engine
I/O
Fig.
2.12
shows
the
engine
interface
circuit.
+24V
C.
-06E)
FAN24V
C.
-06E)
FAN16V
\>
R28
<>
472
OA1
2
0V
OE
-01C)
BDN
02
2581132
R27
183
R26
(000)
R25
183
3
4
MODEL
UMGSN
DI
RD3.9PB
D2
RD3.9PB
03
2SBI132
O419)
2
B
(119)
4
<
3
74LS14
74LS14
0A4
6
3
4
MODEL
UMGSN
+24VREP
01
pLDG2aYP_
I
°1)
I
424VREP
HCMPN
C.
-04C)
0A3
SW
COVER
RESIST
PSENS
TONER
D4
155355
+24VRET
C.
-05E)
LOCK
C.
-06E)
LED
I
R15
21
-0CE)
LED2
R16
1
C.
-06E)
LED3
R13
711_.
(NE
-0CE)
LED4
A
R14
FAN
0.
-09D)
+
Bv0
-02C)
THERM2
C19
I
10V
220L.IF
OVO
I
T
C72
G
.3V
10001.1
+24V
3
RI
103
4-24VREIO
P2
ENGINE
40,
FANSPEED
8(
+5V
27
<45V
,‹
+5V
1
'
0
(
OV
30
<011
4
<0V
24
(
+24V
+24V
23
(
+24VRET
23
<+24VRET
103
1°3
223
223
102
1°2
472
0
+5V
<
C
)
<
C
>
101X5
C
>ii
-
c>C2
>2
4
>2
>
R17
R4
1R1
20
501
17
<
COVER
35
(
RESIST
29
(
PSENS
TONER
3
28
1
>
VDO
=>
LDON
;(
BD
28
>
SCANCLK
25<
LOCK
>
DR
I
VE
9
>
LED
I
>
LED2
>
LED3
>
LED4
>
SOL
>
FANCTL
ELCTL
THERM
>
HEATON
,
a
>
CHARGE
•
DEVELOP
3
3
-100)
FAN
3
6
4
MODEL
UMGSN
0A5
4
MODEL
UMGSN
0A2
-07B)
THERM
-
,
24VRE
I
6
4
MODEL
UMGSN
04
D.T.G
114IK_
I
3
2
L
_
0+24VRET
E
,>
R20
474
TRANSF
3
>
TRANSR
I
>
VCLN
>
PMA
2
>
PMAB
22
>
Pm
>
PMBB
102
X13
Fig.
2.12
101
X2
curl
II
-
12