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UX-41
Sharp UX-41 Service Manual
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FO-71RA
FO-51RA
4 – 1
[1] Block diagram
CHAPTER 4. DIAGRAMS
DRAM
4Mbit
FLASH
2Mbit
CPU I/F
TIMER
RTC
WATCHDOG
TIMER
CLOCK
32.768kHz
INTERRUPT
CONTROLLER
CIS I/F
MOTOR I/F
SENSOR I/F
SIO
THERMAL
HEAD I/F
PANEL I/F
PM
CPU
CONTROL PWB UNIT
1CHIP FAX ENGINE (SCE209)
HANDSET
SPEAKER
+24V
OPERATION
PANEL
TEL/LIU
PWB UNIT
DRIVER
MOTOR
CONTACT
IMAGE
SENSOR
DOCUMENT
SENSOR
PIO
POWER SUPPLY
PWB UNIT
AMPLIFIER
DSP
SURGE
PROTECT/
FILTER
CML
TRANSFORMER
CI
VBT
STABILIZER
RECTIFIER
TRANSFORMER
RECTIFIER
DIODE
TRANS
SURGE
ABSORBER
FILTER
LINE
CLOCK
32.256MHz
LCD
FET
THERMAL
HEAD
PAPER
SENSOR
FRONT
SENSOR
SIO
S-RAM(32kbit)
IA(CX20438)
CNPRG
AMPLIFIER
REGULATOR
+3.3V
CUTTER
(FO-71 ONLY)
+5V
REGULATOR
42
44
Table of Contents
Default Chapter
1
Table of Contents
1
Caution for Battery Replacement
2
Chapter 1. General Description
3
Specifications
3
Operation Panel
4
Cautions on Transmitting Documents
5
Document Types
5
Paper Thickness & Weight
5
Transmittable Documents
5
Connections
6
Electricity
6
Installation
6
Site Selection
6
Attaching the Original Document Support
7
Connecting the Power Cord
7
Connecting the Telephone Line Cord
7
Moving Your Fax and Reconnecting
7
Clearing a Jammed Document
8
Clearing Jammed Printing Paper
9
Normal Dialing
10
Quick Reference Guide
10
Rapid Key Dialing
10
Sending Faxes
10
Adjustments of Output Voltage
11
Chapter 2. Adjustments
11
IC Protectors Replacement
11
Output Voltage Settings
11
Diagnostic Items
12
Diagnostics and Service Soft Switch
12
Entering the Diagnostic Mode
12
Aging Mode
13
Diagnostic Items Description
13
ROM & RAM Check
13
Signal Send Mode
13
Cutter Aging
14
Entry Data Receive
14
How to Make Soft Switch Setting
14
Soft Switch Description
15
CSI Transmission
23
MR Coding
23
Reserved
23
Soft Switch Function Description
23
Troubleshooting
28
Communication Error Code Table
29
Error Code Table
29
Automatic Document Feed
30
Chapter 3. Mechanism Blocks
30
Document Feed Block and Diagram
30
Document Feed Operation
30
General Description
30
Document Release
31
Documents Requiring Use of Document Carrier
31
Driving
31
Recording Block
31
Disassembly and Assembly Procedures
32
Paper Support Guide, Handset Cover and Scanner Unit
32
CIS Unit and Scanner Frame
33
Operation Panel Unit, Drive Unit, Hopper Guide
34
Upper Cabinet and Document Guide Upper
35
Drive Unit Frame (Cutter Model)
36
Drive Unit Frame (Non Cutter Model)
37
Head Guide, PO Guide, Cutter Guide Upper and Cutter
38
PO Roller Guide and Head Frame Unit
39
Head Frame and Thermal Head
40
PWB Case Top, Bottom, PWB and Speaker
41
Wire Treatment
42
CHAPTER 4. DIAGRAMS [1] Block Diagram
43
Wiring Diagram
44
Point-To-Point Diagram
45
Chapter 5. Circuit Description
46
Circuit Description
46
Operational Description
46
PWB Configuration
46
Circuit Description of Control PWB
47
Description of each Block
47
External RAM and ROM
47
Flash Memory Controller
47
Operator Panel Interface
48
Real Time Clock (RTC)
48
Synchronous Serial Interface (SSIF)
48
Video Processing
48
SCE209 (IC2) Terminal Descriptions
49
Mechanism/Recording Control Block
52
Panel Control Block
52
Integrated Analog Control Resisters for CX20438
53
Modem Block (CX20438)
53
Circuit Description of TEL/LIU PWB
54
TEL/LIU Block Operational Description
54
CI Detection Circuit
55
Signal Selection
55
Signal/Dtmf Transmission Level & Receiving Level
55
Circuit Description of CIS Unit
57
Circuit Description of Power Supply PWB
57
Noise Filter Circuit
57
Rectifying/Smoothing Circuit
57
Chapter 6. Circuit Schematics and Parts Layout
58
TEL/LIU PWB Parts Layout (Bottom Side)
70
Power Supply PWB Parts Layout (Bottom Side)
72
Power Supply PWB Parts Layout (Top Side)
72
Chapter 7. Operation Flowchart
74
Protocol
74
Power on Sequence
75
Chapter 8. Others
76
Extension Board Unit
76
Extension Control Pwb
76
Service Tools
76
Relay Board Unit
77
Shading Paper
78
Rewriting Version up the FLASH ROM
79
Back Panel
80
Front Panel
80
Program Loader BOX
80
Program Loader BOX Connection Procedures
80
Using Software for the PC (Tera Term)
81
Other manuals for Sharp UX-41
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Information Card
4 pages
4
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Sharp UX-41 Specifications
General
Brand
Sharp
Model
UX-41
Category
Fax Machine
Language
English
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