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Sharp
Fax Machine
UX-B20
Sharp UX-B20 Service Manual
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UX-B20U/UX-B20C/B25C
7 – 1
FAX
UX-B20U/UX-B20C/B25C
Service Manual
Service Manual
Market
E
CHAPTER 7.
OPERA
TION FLOWCHART
[1] Protocol
NSF
DIS
NSS
TCF
CED
NSF
DIS
NSS
TCF
RTC
MPS
CFR
RTC
MPS
MCF
RTC
EOP
MCF
MCF
DCN
CFR
TSI
CSI
CSI
TSI
RTC
EOP
MCF
DCN
IMAGE
SIGNAL
Document
ejected
Recording
paper
ejected
Receive
side
G3
communication
CED
Transmitter
side
(Document
inserted
into
document
sensor
during
standby)
To
recording
position
(DCS)
Cut
line
printed
IMAGE
SIGNAL
Cut
line
printed
IMAGE
SIGNAL
IMAGE
SIGNAL
Next
page
insert
command
1st
page
Document
inserted
to
the
reading
position
(DCS)
88
90
Table of Contents
Default Chapter
1
Table of Contents
1
Chapter 1. General Description
3
Specifications
3
Operation Panel
4
Transmittable Documents
5
Installation
6
Connecting the Power Cord
7
Loading Printing Paper
7
Installing the Print Cartridge
8
Setting the Paper Size
10
Connecting the Telephone Line Cord
10
Quick Setup Guide
12
Quick Reference Guide
13
Volume Adjustments
14
Chapter 2. Adjustments
14
Adjustments
14
Diagnostics and Service Soft Switch
15
Troubleshooting
36
Error Code Table
37
General Description
38
Hopper Mechanism
38
Chapter 3. Mechanism Blocks
38
Ink Jet Printer
40
Disassembly and Assembly Procedures
43
Block Diagram
47
CHAPTER 4. DIAGRAMS 1] Block Diagram
47
Wiring Diagram
48
Point-To-Point Diagram
49
Circuit Description
50
Chapter 5. Circuit Description
50
Circuit Description of Control PWB
51
Circuit Description of LIU PWB
64
Circuit Description of Power Supply PWB
66
Circuit Description of CIS Unit
66
Control PWB Circuit
67
LIU PWB Circuit
77
Power Supply PWB Circuit
82
Operation Panel PWB Circuit
84
Ink PWB Circuit
87
Chapter 7. Operation Flowchart
89
Protocol
89
Power on Sequence
90
Chapter 8. Other
91
Service Tools
91
Changing the Record Paper Size
94
Rewriting Version up the FLASH ROM
95
Parts Guide
105
Sharp Corporation
105
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Operation Manual
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Sharp UX-B20 Specifications
General
Brand
Sharp
Model
UX-B20
Category
Fax Machine
Language
English
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