Table of Contents
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1
AD50 Point to Point 1/2
EXIPU - SBU
CN507
CN508
-1
CGND
-1
CGND
-2
Voult1
-2
TC1 1
-3
CGND
-3
CGND
-4
Vout2
-4
TC2 1
A
-5
CGND
-5
CGND
-6
CGND
-6
fRS1
-7
VCA
-7
CGND
fRS2
-8
VCA
-8
-9
VCA
-9
CGND
-10
CGND
-10
XTC1L 1
-11
CGND
-11
CGND
-12
TG2 1
-12
XTC2L 1
-13
CGND
-13
CGND
-14
VCC
-14
-
-15
VCC
Thermoswitch
SBU (PCB10)
Exposure
Lamp
CN550
CN551
(L1)
AC(H)
-1
NC -2
NC -3
CN507
CN508
AC(N)
-4
-1
NC
-5
B
-2
GND
-4
-3
Exposure Lamp [t24] -3
-4
XLAMPDET [t5]
-2
-5
VAA [+24V]
-1
-10
GND
-9
[t5] Polygon Motor
-8
XSCRDY [t5]
-7
MCLK [ts5]
-6
GND
-5
VCC [+5V]
-4
[s0→0/5] XDETP2
-3
GND
-2
VCC [+5V]
-1
[s0→0/5] XDEP1
-1
VAA [+24V]
-2
Optics Exhaust [t24]
C
-1
VAA [+24V]
-2
IPU [t24]
-1
GND
-2
VCC [+5V]
-3
APS5 [t5]
-1
RTO00 [t5®0/5]
-15
-2
RTO01 [t5®0/5]
-14
-3
RTO02 [t5®0/5]
-13
-4
RTO03 [t5®0/5]
-12
-5
RTO04 [t5®0/5]
-11
-6
RTO10 [t5®0/5]
-10
-7
RTO11 [t5®0/5]
-9
-8
RTO12 [t5®0/5]
-8
-9
RTO13 [t5®0/5]
-7
-10
RTO14 [t5®0/5]
-6
-11
GND
-5
-12
ISET [s5]
-4
-13
GND
-3
-14
DAISET [3]
-2
-15
GND
-1
D
-6
NC
-5
TXD
-4
RXD
-3
GND
-2
XFGATE
-1
GND
+5V
EXIPU
-1
LDSW
(PCB9)
-2
VCCA
-1
VCCD [+5V]
-19
-2
VCCA [+5V]
-20
-3
GND
-17
-4
GND
-18
-5
VCCD [+5V]
-15
-6
LEVEL
-16
-7
LDERR [s5]
-13
-8
LDOFF [t5]
-14
-9
LDCLK [st5]
-11
-10
SELECT [t5]
-12
E
-11
LDS1 [s5]
-9
-12
LDS0 [s5]
-10
-13
XLDDT1 [st5]
-7
-14
XLDDT0 [st5]
-8
-15
XLDDT3 [st5]
-5
-16
XLDDT2 [st5]
-6
-17
XLDDT5 [st5]
-3
-18
XLDDT4 [st5]
-4
-19
XLDDT7 [st5]
-1
-20
XLDDT6 [st5]
-2
-1
GND
-1
-2
NC
-1
SCHP[s5]
-3
-2
GND
-2
-3
VCC [+5V]
-1
Table 1
-4
GND
-5
EXIPU - Hard Disk
-5
VCC [+5V]
-4
CN707
-6
APS3 [t5]
-3
1
GND
26 NC
-7
APS2 [t5]
-2
2
SD0
27 GND
-8
APS1 [t5]
-1
F
3
GND
28 GND
-1
GND
-3
4
SD1
29 GND
-2
[s5] Platen Cover -2
5
GND
30 GND
-3
VCC [+5V]
-1
6
SD2
31 GND
7
GND
32 /ATN
-4
GND
-3
8
SD3
33 GND
-5
VCC [+5V]
-2
9
GND
34 GND
-6
APS54 [t5]
-1
10 SD4
35 GND
-7
NC
11 GND
36 /BSY
-8
NC
12 SD5
37 GND
13 GND
38 /ACK
14 SD6
39 GND
15 GND
40 /RST
Hard Disk (See Table 1)
16 SD7
41 GND
17 GND
42 /MSG
18 SDP
43 GND
-1
GND
19 GND
44 /SEL
-2
GND
20 GND
45 GND
-3
VCA [+12V]
21 GND
46 /CD
-4
GND
22 GND
47 GND
-5
VCC [+5V]
23 GND
48 /REQ
-6
VCC [+5V]
24 GND
49 GND
-7
VCB [-12V]
25 GND
50 /IO
-8
VAA [+24V]
G
DC Power Supply Board
(PCB3)
See 2/2
Operation Panel (PCB7)
See 2/2
H
-A1 to -A10
-B1 to -B10
SCU (PCB1)
See 2/2
1
All manuals and user guides at all-guides.com
2
AC Drive Board
(PCB2)
See 2/2
(TS1)
-2
-1
CN1
CN928
Polygonal
Mirror
-1
-10
-1
M
-2
-9
-2
-1
-3
-8
-3
4
-2
-4
-7
-4
Laser
-5
-6
-1
Synchronization
-6
-5
-2
Detector 2
-7
-4
-3
(PCB13)
-8
-3
-1
Laser
-9
-2
-2
Synchronization
-10
-1
-3
Detector 1
(PCB12)
Optics
-2
-1
M6
-1
-2
Exhaust
Fan
M7
IPU Fan
M
16
-3
Original
-2
S15
Length SN2
-1
-1
STMA1
-2
STMB2
M
-3
STMC3
10
-4
STMD4
-5
STND5
Scanner
Drive
-1
VAA [+24V]
-2
GND
-4
VCC [5V]
-5
VCA [+12V]
-3
GND
Front Cover Safety SW (SW7)
-1
-2
CN947
CN900
-1
-2
(SW4)
LCT SW
-1
-2
-3
-1
-2
-3
-4
-5
-6
Scanner
-1
S13
-7
-1
H.P SN
-1
-9
-2
LCT
LCT Lift
Cover SW
Original
(SW5)
S21
Width
SN
LCT Unit
LCT Paper End
Platen
SN
S17
Cover
SN
Original
Length
S14
SN
Hard Disk
(HDD)
CN960
-1
-1
-2
-2
-3
-3
-4
-4
-5
-5
-6
-6
-7
-7
-8
-8
Paper Feed
ADF
FINISHER
Unit
(Option)
(Option)
(Option)
See 2/2
See 2/2
See 2/2
2
3
4
Relay Board
(See 2/2)
(PCB19)
RA
-2
-1
Main Switch
(See 2/2)
T20
T27 [t24] Main Switch Relay
-9
T23
T26
VAA [+24V]
-8
RA
T22
NC
-7
T25
NC
-6
(SW6)
NC
-5
NC
-4
NC
-3
-1
-2
[t24] By-pass Relay
-2
CL
By-pass Relay
-2
-1
VAA [+24V]
-1
8
Fusing Unit
Fusing Lamp
-2
(L2)
-1
Fuse(TF1)
-12 Thermistor(-)
-4
-1
-B14
-7
Thermistor(+)
-3
-2
-B13
(NA:-8/ EU:-9)GND
-2
-3
-B12
(NA:-3/ EU:-4) [s5] Unit Set
-1
-4
-B11
NC
-B10
GND
-B9
[s5] Front Cover Open
-B8
NC
-B7
[st5] Zero Cross
-B6
[t24] Paper Relay
-B5
[t24] Fusing Heater TRQ
-B4
-1
-3
Ozone Fan Lock [t24]
-B3
Ozone Fan
-2
-2
Ozone Fan [t24]
-B2
M9
-3
-1
VAA [+24V]
-B1
-1
Lock [t5]
-A14
-2
Speed [t5]
-A13
GND
-2
Main
Motor
-3
CCW/ CW [s5]
-A12
-4
Start/ Stop [t5]
-A11
[5] VAA
-1
-5
GND
-A10
M1
-1
VCC [+5V]
-A9
Transfer Belt
Transfer Belt Pasition [ t5]
-2
-A8
S20
Position
-3
GND
-A7
NC
-A6
-3
-1
Exhaust Fan [st24]
-A5
-2
-2
Lock [st24]
-A4
Exhaust Fan
M8
-1
-3
VAA [+24V]
-A3
-2
-1
VAA [+24V]
-A2
CL
Transfer Belt Lift
-1
-2
Belt Lift [t24]
-A1
-1
-2
-3
NC
-1
-6
NC
NC
-1
-2
-5
RXD
-2
-3
-4
TXD
-3
-4
-3
GND
-4
-5
-2
XFGATE [t5]
-5
-6
-1
GND
-6
-1
-6
-1
VCC [+5V]
-B14
Upper
S4
-2
-5
-2
GND
-B13
-3
-4
-3
Upper Relay [t5]
-B12
Relay
-1
-3
-4
VCC [+5V]
-B11
Lower
-2
-2
-5
GND
-B10
S6
-3
-1
-6
Lower Relay [t5]
-B9
Relay
NC
-B8
-2
-1
By-pass Pick-up [t24]
-B7
SOL
By-pass Pick-up
-1
-2
VAA [+24V]
-B6
1
-2
-1
Junction Gate Sol [t24]
-B5
SOL
Junction Gate Sol
-1
-2
VAA [+24V]
-B4
2
NC
-B3
-2
-1
VAA [+24V]
-B2
-1
-2
Door Open [s24]
-B1
-1
-14 LCT Lift Motor(Down) [s5]
-1
-2
-13 LCT Lift Motor(Up) [s5]
-2
-3
-12 LCT Set [s5]
-3
-4
-11 GND
-4
-4
-5
-10 LCT Tray Down LED [t5]
-5
Tray
-1
-6
-9
LCT Tray Down [t5]
-6
SW2
Down
-2
-7
-8
GND
-7
-3
-8
-7
VCC [+5V]
-8
SW
-1
-9
-6
VCC [+5V]
-9
Lower
-2
-10
-5
LCT Lower Limit [s5]
-10
S7
Limit
M
-3
-11
-4
GND
-11
5
-12
-3
LCT Cover SN [s5]
-12
LCT Cover
(SW5)
-13
-2
GND
-13
SW
-14
-1
VCC [+5V]
-14
-1
-3
-1
-3
-1
GND
-1
S8
-2
-2
-2
-2
-2
LCT P.E. SN [s5]
-2
-3
-1
-3
-1
-3
VCC [+5V]
-3
VAA [+24V]
-1
GND
-2
-12V
-3
GND
-4
+12V
-5
GND
-6
NC
-7
VCC
-8
GND
-1
RXD (SCU → BCU)
-2
TXD (BCU → SCU)
-3
NC
-4
Optics Fiber (Paper Feed Unit)
Optics Fiber (ADF)
Optics Fiber (Finisher)
-1
-3
-1
VCC [+5V]
-B10
Fusing Exit
-2
-2
-2
Fusing Exit SN [t5]
-B9
S16
SN
-3
-1
-3
GND
-B8
Toner
-3
-1
-12
-1
-7
-1
VCC [+5V]
-B7
-2
-2
-11
-2
-6
-2
Toner End SN [s5]
-B6
End
S18
-1
-3
-10
-3
-5
-3
GND
-B5
SN
-1
-9
-4
-4
-4
GND
-B4
-2
-8
-5
-3
-5
TD Sensor [0~10]
-B3
TD SN
S12
-3
-7
-6
-2
-6
TD +12V
-B2
-4
-6
-7
-1
-7
TD SN CNT [0~10]
-B1
Development Unit
-1
-5
-8
GND
-2
-4
-9
VAA [+24V]
Development
PCB
-3
-3
-10
Feed Back
Bias
15
-4
-2
-11
Trigger [t24]
Power Pack
-5
-1
-12
PWM [s0®0/5]
-1
-2
-3
-4
-5
VCC [+5V]
-1
GND
-2
VCC [+5V]
-3
GND
-4
VAA [+24V]
-5
NC
8 pin
3
4
5
Symbol Table
AC Line
DC Line
Puls
Signal Direction
s
Active High
t
Active Low
[
]
Voltage
-24
-24
[+5V] VAA
-1
-1
-13
GND
-13
-1
Duplex Feed CLK [0→0/5]
-15
-15 -1
-2
Duplex Feed CCW/CW [s5] -16
-16 -2
-3
Duplex Feed Start/Stop [t5] -17
-17 -3
-4
Duplex Feed Power Down [t5] -18
-18 -4
-5
Side Fence +A [t5→0/5]
-2
-2
-6
Side Fence -A [t5→0/5]
-3
-3
-7
Side Fence +B [t5→0/5]
-4
-4
-8
Side Fence -B [t5→0/5]
-5
-5
-9
End Fence +A [t5→0/5]
-6
-6
-10
End Fence -A [t5→0/5]
-7
-7
-11
End Fence +B [t5→0/5]
-8
-8
-12
End Fence -B [t5→0/5]
-9
-9
-1
VCC [+5V]
-10
-10 -1
-19 -2
-2
Side Fence H.P [s5]
-19
-3
End Fence H.P [s5]
-20
-20 -3
-4
Paper End [s5]
-21
-21 -4
-5
Entrance SN [t5]
-22
-22 -5
-6
Turn SN [s5]
-23
-23 -6
-7
GND
-11
-11 -7
-8
Unit Set [t5]
-14
-14 -8
-A1
GND
-11
-1
-A2
Paper End [s5]
-10
-2
-A3
VCC [+5V]
-9
-3
-4
-A4
VAA [+24V]
-8
-A5
Pick-up SOL [t24]
-7
-5
-A6
NC
-6
-A7
GND
-5
-7
-A8
Tray Upper Limit [t5]
-4
-8
-9
-A9
VCC [+5V]
-3
-A10
VAA [+24V]
-2
-10
-A11
Separation [t24]
-1
-11
-B1
GND
-6
-B2
Tray Paper Size 5 [t5]
-5
-B3
Tray Paper Size 4 [t5]
-4
-B4
Tray Paper Size 3 [t5]
-3
-B5
Tray Paper Size 2 [t5]
-2
-B6
Tray Paper Size 1 [t5]
-1
-B7
Tray Lift (+) [s24]
-2
-B8
Tray Lift (-) [0]
-1
-B9
NC
-B10
VAA [+24V]
-2
-1
-B11
Paper Feed [t24]
-1
-2
CN222
-A1
GND
-3
-1
-A2
Registration SN [t5]
-2
-2
-3
-A3
VCC [+5V]
-1
-A4
VAA [+24V]
-2
-1
-A5
Toner Supply [t24]
-1
-2
-A6
NC
-A7
Not used
-A8
Not used
BCU
-A9
NC
(PCB4)
-A10
VAA [+24V]
-2
-1
-A11
Relay CL [t24]
-1
-2
-A12
NC
-A13
VAA [+24V]
-2
-1
-A14
Regist CL [t24]
-1
-2
-1
VAA [+24V]
-2
-2
-2
By-pass Feed CL [t24]
-1
-1
-3
GND
-2
SW1
-4
By-pass Table SW [s5]
-1
-5
NC
-6
GND
-8
-1
-2
-7
By-pass Paper End [s5]
-7
-8
VCC [+5V]
-6
-3
-9
By-pass Paper Size 1 [t5]
-5
-4
-10
By-pass Paper Size 2 [t5]
-4
-5
-11
By-pass Paper Size 3 [t5]
-3
-6
-12
By-pass Paper Size 4 [t5]
-2
-7
-13
GND
-1
-8
-A1
Toner Bottle Drive [t24]
-8
-1
-A2
VAA [+24V]
-7
-2
-A3
GND
-6
-3
-A4
Toner Over Flow [t5-0/5]
-5
-4
-A5
VCC [+5V]
-4
-5
-A6
VCA [+12V]
-3
-6
-A7
ID SN LED [t12]
-2
-7
-A8
ID Sensor [0~5]
-1
-8
-A9
VAA [+24V]
-2
-1
-A10
Charge Inlet [st24]
-1
-2
-1
VAA [+24V]
-9
-1
-2
LCT Pick-up SOL [t24]
-8
-2
-3
NC
-7
-3
-4
-4
GND
-6
-5
LCT Upper Limit [s5]
-5
-5
-6
VCC [+5V]
-4
-6
-7
GND
-3
-7
-8
By-pass Relay [t5]
-2
-8
CN219
-9
VCC [+5V]
-1
-9
CN220
CN221
Transfer
High Voltage
Quenching
Lamp
Charge High
Voltage
PCB
Supply
L3
PCB5
CN875
CN187
CN203
CN153
CN152
High Voltage Control
(PCB6)
5
6
DUPLEX UNIT
-1
COM +A [24] -1
-2
+A [t24]
-2
-3
-A [t24]
-3
M
-4
COM +B
-4
11
-5
+B [t24]
-5
Duplex
-6
-B [t24]
-6
Feed
-1
COM A [24] -1
-2
+A [t24]
-2
-3
-A [t24]
-3
A
M
-4
-B [t24]
-4
13
-5
+B [t24]
-5
Side
-6
COM B [24] -6
Fence
-1
-1 COM A [24] -1
Jogger
-1
-2 +A [t24]
-2
M
12
-3 -A [t24]
-3
-4 -B [t24]
-4
End
-5 +B [t24]
-5
Fence
-6 COM B [24] -6
Jogger
-5
-1 GND [0]
-1
-6
-2 S.F. Jogger [t5] -2
S25
-7
-3 VCC [+5V]
-3
-8
Side Fence H.P
-9
-1 GND
-3
-2 E.F. Jogger [t5]-2
-10
S26
-3 VCC [+5V]
-1
-11
End Fence H.P
-12
-4 GND
-3
-5 Paper End [t5] -2
S22
-6 VCC [+5V]
-1
B
Paper End
-7
-8 GND
-3
S24
-9 Entrance [t5] -2
-10 VCC
-1
Entrance
-11 GND
-3
-12 Turn [s5]
-2
S23
-13 VCC [+5V]
-1
Turn
-3
-2
Paper End
S3
-1
-2
-1
SOL
Pick-up
-2
-1
4
-3
-2
Tray Upper Limit
S5
C
-1
-2
-1
SOL
Separation
-1
-2
5
SW3
Tray Paper Size
Tray Lift
M3
CL
Paper Feed
7
-3
-2
S10
Registration
-1
D
CL
Toner Supply
1
CL
Relay
6
CL
Registration
4
CL
By-pass Feed
5
E
By-pass Table
-3
-2
S2
By-pass Paper End
-1
-5
-1
-4
-2
By-pass Paper
-3
-3
S1
-4
Size
-2
-1
-5
-2
-1
Toner Bottle Drive
M2
-1
-2
-3
-2
S27
Toner Overflow
-1
F
-3
-1
-3
-2
-2
-2
S11
ID SN
-1
-3
-1
FAN
Charge Inlet Fan
(M15)
-2
-1
SOL
LCT Pick-up
-1
-2
3
-3
LCT
-2
S9
Upper Limit SN
-1
-3
By-pass
-2
S28
Relay SN
-1
G
Charge Corona
Cleaning Motor
14
(Option)
CN874
CN154
CN157
H
6
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