Transfer Section - Sharp AR-M550N Service Manual

: Feb. 6 2004
1

[Transfer section]

A. General
In this section, toner images on the OPC drum are transferred to
paper.
B. Major parts and signal functions
1
2
4
THPS2
7
6
1 3
2
4
8
6
7
Signal
Code
name
DM DM OPC drum motor
TURM TURM Transfer separation motor
THPS2 THPS2 Transfer belt contact/separation
home position sensor 2
THV THV Transfer high voltage
HUS-TC HUS-TC Process humidity sensor
No. Name
1 Transfer drive roller (Drive)
1
2 Transfer cleaning roller
3 Transfer belt
4 Transfer tension roller
5 Transfer belt discharge brush
6 Transfer roller
7 Transfer auxiliary roller (Idle)
1
8 Transfer (TCCL) bias high voltage PWB
3
TURM
HV
FPS-187(WH)
THV
5
Name
Drives the OPC drum and the
transfer section.
Drives and separates the transfer
belt.
Transfer belt separation home
position detection 2
High voltage for transfer
Process peripheral humidity
detection
Drives the transfer belt.
Cleans the transfer belt.
Transfers toner images from the OPC drum to paper.
Applies a proper tension to the transfer belt.
Connects the transfer belt to the chassis ground.
Applies a transfer voltage to the transfer belt.
Helps to stretch the transfer belt.
Generates a bias voltage for the transfer cleaning roller in cleaning or in the print mode.
AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 82
CN-7
CN-15
B32B-PHDSS-B
B34B-PHDSS-B
+24V1
7 MHV-T
8 /THV+PWM +24V1
9 THV+REM /CFM-DV
10 /CHV-PWM
/RRC
GND2
(NC)
CN-8
+24V1
B20B-PHDSS-B
+24V(DSW)
1 PCS-LED
+5V-APPD1
2 DMS-LED
PFD2
3 PCS
+5V-APPD2
4 DMS
THPS1
5 +12V2
+5V-PFD2
CN-1
6 +12V2
THPS2
B16B-PH-K-S
7 +24V-DL
+5V-DSWD
8 +24V1
MHV-T 6
TURM
/DL
9
/THV+PWM 7
10 +5V-AINPD
/PTDL
THV+REM 8
11 +24V1 /SFM
/CHV-PWM 9
12 TH-CL
+5V-THPS1
13 /PSPS
(NC)
14 GND2
+5V-THPS2
15 +5V2
(NC)
16 TLS
/CFM-AM1
17 HUS-TC
APPD1
18 GND2
DSWD
19 GND2
APPD2
20 (NC)
/DGS
AINPD
GND2
GND2
(NC)
DSW-L
B1v8B-PHDSS-B
GND2
GND2
+5V2
+5V2
/DM
PCU
/DVM
DMCLK
DVMCLK
PWB
DM-T
DVM-T
GND2
+5V2
/FUM
FUMCLK
FUM-T
+24V1
/VFM-BKR
GND2
Function/Operation
DC brushless motor
DC brush motor
Transmission type
Humidity sensor
Operation
DM
DRAWER
1 1
DSW-L
LEFT DOOR UNIT
2 /ADUM2/A 2
1
3 3
/ADUM2A
2
4 /ADUM2B 4
3
5 5
/ADUM2/B
4
6 +5V-APPD1 6
5
7 +5V-APPD2 7
6
8 +5V-PFD2 8
7
9 +5V-DSW 9
8
10 +5V-AINPD 10
9 SMR-12V-N/SMP-12V-NC
11 (NC) 11
10
+5V-PFD2
12 /ADUM1/A 12 1 1
11
13 /ADUM1A 13 2 PFD2 2
12
3 +5V-THPS2 3
14 /ADUM1B 14
13
15 /ADUM1/B 15 4 THPS2 4
14
5 /TCB-PWM 5
16 +24V1 16
15
17 +24V(DSW) 17 /TCBIAS 6
6
16
7 DSW-L 7
18 PFD2 18
17
19 /CFM-ADU 19 8 DSW-L 8
18
20 20 9 GND2 9
THPS2
19
21 TURM 21 10 TURM 10
20
22 22 11 +24V1 11
/TCB-PWM
21
23 /TCBIAS 23 12 /CFM-ADU 12
22
24 +5V-THPS2 24
23
25 GND2 25
24
26 GND2 26
25
27 APPD1 27
26
28 APPD2 28 B6B-PH-K-S
27 1
29 AINPD 29
2
28
30 DSW-ADU 30
3
29
31 /DGS 31
4
30
32 +24V2 32
5
31
QR/P4-32S-C(01)/QR/P4-32P-C(01) 6
32
CN-6
1
2
3
4
5
6
7
8
9
10
11
CN-5
12
B16B-PADSS-1
13
+38V 10
14
+38V 11
AC PWB
15
+38V 12
16 GND1 14
17
GND1 15
18
GND1 16
Type
The transfer belt is pressed on
the OPC drum only during
printing.
Not used.
Analog detector
(Not used)
179228-3
1 THPS2
2 GND2
3 +5V-THPS2
PHR-2
1 TURM
2 GND2
FPS-187
DSW-L Bias
DSW-L
/TCBIAS TB PWB
/TCB-PWM
GND2
F-GND
S5B-PH-K-S
1 GND2
2 +5V2
3
/DM
4 DMCLK
5
DM-T
B2PS-VH
1 +38V
2
GND1
Note