2NP
2-4-24
YC16
YC33
ENGINE CONNECT PWB
3.3V1_A
GND
PAPEMP3
3.3V1_A
GND
PAPEMP4
3.3V1_A
GND
FEED2_SW
RCOVER
GND
24V1
GND
GND
MCV_ENBL
GND
MCV_FED_COUNT
MCV_EJE_COUNT
MCV_COPY_SIG
MCV_TXD
GND
MCV_RXD
GND
FEED2_CL_REM
YC3
24V1
MID_CL_REM2
24V1
GND
FEED2_MOT_RDY
FEED2_MOT_CLK
FEED2_MOT_REM
GND
24VIL3
YC2
YC1
GND
GND
YC15
DC1_SET
DC1_SET
DC1_COUNT
DC1_COUNT
24V1
24V1
GND
GND
5V1
5V1
MK2_RKEY7
MK2_RKEY7
MK2_RKEY6
MK2_RKEY6
MK2_RKEY5
MK2_RKEY5
MK2_RKEY4
MK2_RKEY4
MK2_RKEY3
MK2_RKEY3
COVER_OPEN
MK2_RKEY2
MK2_RKEY2
GND
MK2_RKEY1
MK2_RKEY1
GND
MK2_RKEY0
MK2_RKEY0
MK2_ENBL
MK2_ENBL
24V1
MK2_COUNT
MK2_COUNT
1
2
3
4
5
4
LIFT_MOT2_OUTB
LIFT_MOT2_OUTA
5
PS4
2
1
3
2
Vout
1
3.3V4
3
GND
1
3.3V4
GND
1
Vout
2
2
3
PS3
GND
2
2
3.3V4
3
3
1
Relay
4
FS2
Vout
1
1
4
5
3
3
2
6
3
7
6
5
5
12
12
12
12
11
7
10
10
11
10
11
10
9
7
YC26
10
7
6
9
8
4
2
1
1
1
2
5
3
6
2
Relay
GND
2
2
REM
3
1
2
3
2
Relay
1
7
7
4
4
2
6
3
5
4
5
4
4
4
5
1
16
5
4
2
14
13
15
COIN
VENDER
KEY COUNTER
KEY CARD
14
7
1
2
3
8
14
8
10
11
12
10
10
12
11
3.3V
9
5
6
2
4
5
11
8
12
13
3
4
14
8
6
6
5
6
4
5
LIFT_FULL2_SW
3.3V1_A
2
GND
1
3
13
3
4
7
10
9
3
11
8
A1
1
A5
A4
3
9
7
A6
6
7
B8
13
A5
A2
12
A4
A3
A3
A2
A6
B4
A1
B1
B3
B5
B6
B2
B7
3
2
7
6
5
4
8
11
4
9
5
7
8
1
9
1
BRIDGE_LED_A
6
10
14
9
BRIDGE_PH1
9
BRIDGE_DET
8
2
YC2
COVER_OPEN
GND
5
BRIDGE_SENS 1
7
BRIDGE_LED_A
3
24V
3
1
2
1
4
5
5
BRIDGE_SENS_2
1
4
GND
11
14
B4
10
13
12
B6
B7
B5
B8
B5
B9
B9
B5
B6
B6
3
4
1
3
B10
1
2
1
3
4
A8
A8
B2
B2
A10
A4
A4
A9
A5
A5
A6
A6
A9
A7
A7
A1
A1
A2
A2
A3
A3
SGND
SGND
9
12
10
9
RxD
B8
2
A10
B1
B1
B7
B7
B8
B3
B3
B10
3
B4
B4
3
DC1_COUNT_2
4
6
3
4
5
LM2
1
1
6
3
3
1
2
2
1
9
9
7
2
2
2
1
1
1
10
11
12
10
10
DC1_COUNT
11
12
11
11
4
3
TxD
12
24V4
DC1_SET
2
2
BRIDGE_DET
BRIDGE_PH1
BRIDGE_PH0
1
16
15
BRIDGE_SENS1
11
9
7
6
14
13
7
9
12
BRIDGE_SENS2
BRIDGE_REM
BRIDGE_CLK
8
BRIDGE_VREF
5
6
9
8
FAN_REM
8
8
11
8
3
2
YC11
1
1
2
2
16
15
14
10
13
12
4
2
4
5
6
1
2
3
4
3
4
6
SIZE_1
PAPER_LSIZE2_1
GND
2
2
1
3
4
1
2
PLSW2
CN-2
CN-3
5
6
3
GND
CN-1
1
5
3
GND
1
1
3
3
24V4
Start/Stop
MCL2
PFCL2
CM2
LD
CLK
REM
CW/CCW
24V4
REM
24VIL
5
GND
1
1
RCSW2
SW
2
2
LS2
3.3V1_A
3
3
GND
2
2
Vout
7
1
1
3
B3
2
B2
B1
YC28
1
EPWB
YC27
GND
DF_DET
DF_RDY
YC12
1
PAPER_LSIZE2_3
6
9
10
8
7
11
11
5
PAPER_WSIZE2
5
2
8
6
PAPER_LSIZE2_2
1
GND
2
3
4
DF_CLK
DF_SDO
DF_SEL
DF_SDI
GND
PWSW2
2
3
1
1
2
6
1
5
1
1
2
3
4
2
3
4
4
3
1
4
Relay
3
4
1
2
17
B6
OPCPWB
B7
2
1
3
B9
B1
1
5
4
2
3
3
9
7
9
10
11
8
15
5
MK2_RKEY7_2
MK2_RKEY6_2
18
19
B8
10
13
GND
MK2_RKEY4_2
MK2_RKEY0_2
16
12
OPTION KEY CARD
MK-2 (ONLY JAPAN)
A5
B4
B3
B5
A6
A10
A9
B2
3
1
5V1
5V1
5V1
5V1
5V1
4
3
3
SGND
1
4
6
4
A4
5
4
1
2
3
A1
5V1
7
5V1
5V1
A7
A2
A3
A8
MK2_RKEY2_2
MK2_RKEY1_2
8
24V1
MK2_RKEY5_2
MK2_ENBL_2
15
16
13
12
DC1_SET_2
GND
9
8
9
11
24V1
14
4
7
6
MK2_RKEY3_2
B10
20
MK2_COUNT_2
13
12
11
10
10
7
7
8
1
3
5
6
10
8
6
5
4
MCV_ENBL
4
GND
MCV_FED_COUNT
6
5
5
GND
1
GND
3
3
2
7
24V
1
2
1
2
2
1
2
4
6
6
4
5
5
9
MCV_COPY_SIG
8
7
8
MCV_EJE_COUNT
7
1
2
2
3
3
1
1
BRIDGE_VREF
13
7
14
6
9
BRIDGE_REM
12
YC1
FAN_REM
14
BRIDGE_CLK
11
BRIDGE_PH0
10
3.3V
2
BRIDGE_SENS 2
6
COVER_OPEN
BRPWB
YC4
24V1
1
GND
4
GND
3
FAN_REM
YC3
BRCSW
2
2
1
1
1
2
BRCS2
GND
3
3
5V
1
1
Vout
2
2
BRCS1
GND
3
3
5V
1
1
Vout
2
2
2
2
GND
3
BRIDGE_SENS_1
3
BRCM
/B
4
4
/A
3
3
A
1
1
4
4
SMOT_B2
6
5
SMOT_B1
5
SMOT_A2
6
7
7
SMOT_A1
B
2
2
FG
From LVU (P.5)
DFMPWB
Summary of Contents for TASKalfa 2551ci
Page 1: ...SERVICE MANUAL Published in September 2016 842NP11A 2NPSM06A Rev A TASKalfa 2551ci ...
Page 10: ...This page is intentionally left blank ...
Page 97: ...2NP 1 1 2 74 This page is intentionally left blank ...
Page 259: ...2NP 1 3 162 U486 Details on the modes Figure 1 3 47 Item No Description ...
Page 473: ...2NP 1 5 62 This page is intentionally left blank ...
Page 497: ...2NP 2 1 22 This page is intentionally left blank ...
Page 555: ...2NP 2 3 48 This page is intentionally left blank ...
Page 584: ...Installation Guide DP 770 B Document processor DP 772 Document processor Installation Guide ...
Page 620: ...DP 773 Document processor Installation Guide ...
Page 646: ...PF 791 500 x 2 Paper feeder Installation Guide ...
Page 654: ...PF 810 3000 sheets deck Installation Guide ...
Page 667: ...DF 770 D Document finisher Installation Guide ...
Page 685: ...AK 740 Bridge unit Installation Guide ...
Page 687: ...PH 7A C D Punch unit Installation Guide ...
Page 708: ...DT 730 B Document tray Installation Guide ...
Page 710: ...5 2013 5 302LC56750 01 H F G D D 6 4 3 7 E C D D M4 8 M4 8 M4 8 M4 8 ...
Page 711: ...FAX System W B Installation Guide ...