Sharp AR-M550U - Page 90

: Feb. 6 2004
1
AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 35
B. Maintenance and parts replacement
(1) Maintenance list
✕: Check (Clean, replace, or adjust as necessary.) ❍:Clean ▲: Replace ∆: Adjust ✩: Lubricate ❏: Shift position
✕: Check (Clean, replace, or adjust as necessary.) ❍:Clean ▲: Replace ∆: Adjust ✩: Lubricate ❏: Shift position
Code
Signal
name
Name Function/Operation Type Note
MPRD1 MPRD1 Paper feed tray 2 paper pass
detector 1
Manual feed/paper feed tray 2/LCC paper
pass detection
Transmission
type
Paper transport system sensor
MPRD2 MPRD2 Paper feed tray 2 paper pass
detector 2
Manual feed/paper feed tray 2/LCC paper
pass detection
Transmission
type
Paper transport system sensor
PPD PPD Resist roller front paper pass
detector
Paper pass detection in front of resist roller Reflection type Paper transport system sensor
RRC RRC Resist roller clutch Resist roller ON/OFF control Electromagnetic
clutch
PSBC PSBC Resist roller brake clutch Resist roller braking Electromagnetic
clutch
MM MM Main motor Drives the paper feed trays 1, 2, 3, and 4,
and the manual paper feed section.
DC brushless
motor
Paper pass
TRM TRM Resist roller front drive motor Drives the paper transport roller 15. Stepping motor Normal speed mode/ Resist roller
front paper transport timing
control (Warp amount control)
VPM VPM Vertical paper transport motor
Drives the paper transport rollers 4 and 13. Stepping motor Normal speed mode
1
1
1
No. Name Function
1 Resist roller (Drive) Transports paper to the transfer section. / Controls the transport timing of paper to adjust the relationship
between images and paper.
2 Resist roller (Idle) Applies a pressure to paper and the resist roller to provide transport power of the transport roller to paper.
3 Transport roller 15 Transports paper to the transport resist roller.
AR-M550U/N (PM: 250K)
When
calling
250K 500K 750K 1000K 1250K 1500K 1750K 2000K
Remark
AR-M620U/N, AR-M700U/N (PM: 300k) 300K 600K 900K 1200K 1500K 1800K 2100K 2400K
Unit name No. Part name
Vertical paper
transport
section 2
1 Resist roller (Idle) ✕ ❍❍❍ ❍ ❍ ❍ ❍ ❍
2 Transport rollers ✕ ❍❍❍ ❍ ❍ ❍ ❍ ❍
3 Transport paper guides ❍ ❍❍❍ ❍ ❍ ❍ ❍ ❍
4Sensors
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ Optical
reflection
sensor
AR-M550U/N (PM: 250K)
When
calling
250K 500K 750K 1000K 1250K 1500K 1750K 2000K
Remark
AR-M620U/N, AR-M700U/N (PM: 300k) 300K 600K 900K 1200K 1500K 1800K 2100K 2400K
Unit name No. Part name
1 Paper dust cleaner ✕▲▲▲▲▲▲▲▲
1
1
1
2
4
3
1
1