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Panasonic
KX-FT21RS
manual
Scanning Printing, See 6.5. Sensers and Switches, 117
Models:
KX-FT21RS
1
117
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Troubleshooting
Specification
Install
Ccitt No Test Chart
User Recoverable Errors
Transmit problem
Reset Circuit
Disassembly Instructions
Battery Caution
Adjustments
Page 117
Image 117
KX-FT21RS
6.4.6.3.2.
Scanning
6.4.6.3.3.
Printing
Note:
See
6.5. SENSERS AND SWITCHES
.
117
Page 116
Page 118
Page 117
Image 117
Page 116
Page 118
Contents
KX-FT21RS
Contents
For Service Technicians
Safety Precautions
Battery Caution
Insulation Resistance Test
AC Caution
Personal Safety Precautions
Moving Sections of the Unit
Live Electrical Sections
General
Features
Facsimile
Integrated telephone system
Optional Accessories
Specifications
Ccitt No Test Chart
Location of Controls
Overview
Control Panel
Connections
Installation
Installing the Recording Paper
Document Stacker
# , then
Setting Your Logo
Example Bill
Press START/COPY/SET
Documents you can send
To select characters with the dial keypad
Maintenance Items and Component Locations
Maintenance Check ITEMS/COMPONENT Locations
Outline
Maintenance List Maintenance Cycle
Disconnect the power cord and the telephone
Maintenance Cleaning the Document Feeder Unit
Clean the document feeder rollers, sub roller
Line cord
Cleaning the Thermal Head
Cleaning the Pick UP Roller
Refer to 4 Disassembly Instruction
Troubleshooting Summary
Troubleshooting
Precautions
User Recoverable Errors
Document Jam
Starting Troubleshooting
Troubleshooting Details
Simple Check List
Troubleshooting Items Table
No document feed
ADF Auto Document Feed Section
Paper JAM
Multiple feed
Skew
Image is distorted When printing
Black or white vertical lines appear Skewed receiving image
KX-FT21RS
KX-FT21RS
Facsimile section
Communication Section
Defective facsimile section
Transmit problem
Sometimes there is a transmit problem
Check Document Paper JAM
Reception problem
Unit can copy, but cannot transmit/receive
Erroneous detection due to an echo or echo canceler
Echo/Echo Canceler
Cause and Countermeasure
Countermeasure a
Causes and Countermeasures Cause a
Cause B
Countermeasure B
Reception Operation
Transmission Operation
How to output the Journal Report
TX=TRANSMISSION RX=RECEPTION
Countermeasure
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
Hint
Remote programming
KX-FT21RS
YES/NO
Program Mode Table
996 Journal
Digital Board Section
Please refer to the 2.3.4.3.1. Digital Block Diagram
Digital Block Diagram
KX-FT21RS
Normal Wave Patterns
Pin No. Diagram
KX-FT21RS
KX-FT21RS
NG Example
Check the Status of the Digital Board
Analog Board Section
Defective ITS Integrated Telephone System Section
Key components for troubleshooting
Power Supply Board Section
Troubleshooting Flow Chart
KX-FT21RS
Broken parts repair details D101, D102, D103, D104
No key operation No LCD indication
Operation Board Section
Sensor Section
Check the document sensor PS1
Check the read position PS2
Refer to 6.4.4. Scanning Block
Read Section
KX-FT21RS
Refer to 6.4.3. Thermal Head
Thermal Head Section
Programming and Lists
Operation
Operation Flow
Above values are the default values
3ALL
Service Function Table
See 2.6.1. Printout Example
Service Mode Settings Example of a printed out list
Other
Test Functions
Dtmf Signal Tone Transmit Selection
Button Code Table
Print Test Pattern
Compression Code MH/MR
Descriptions
Mslt means Minimum Scan Line Time. Used only at the factory
EQM
Printout Example
Adjusting the Feed Pressure
Adjustments
Disassembly Instructions
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
KX-FT21RS
Preparation
Flat Package IC Removal Procedure
KX-FT21RS
Connection Diagram
Codec IC5 D/A converter
General Block Diagram
AC220V
+24V +5V
256k
Block Diagram
Control Section
100
Decodes the address
Asic IC1
Execute modulation and demodulation for the FAX
Transmits the recorded data to the thermal head
102
103
Vddc
104
Reset Circuit
ROM IC2
RAM IC3
Sram and RTC Back UP Circuit
Function
Circuit Operation
Supervision Circuit for the Thermal Head Temperature
LED Arraycis
Image Data Flow During Facsimile Operation
Facsimile Section
Copy Fine, Super-Fine, Half Tone
Transmission
Analog
Block Diagram
Front/End
Head 110
Thermal Head
112
Scanning Block
Stepping Motor Drive Circuit
Stepping Motor Phase Pattern
Gear Section
Mode Selection
Transmit mode
Mode Operation
Receive mode
Copy mode
See 6.5. Sensers and Switches
Scanning Printing
117
118
Copying
Sensors and Switches
All of the sensor and switches are shown below
119
Motor Position Sensor
Recording Paper Sensor SW201
120
Read Position Sensor PS2
Document Sensor PS1
121
Function
Modem Section
On ITU-T International Telecommunications´ Union
Definition of Each Group
Control time
Concerning Transmission Time
Image transmission time
Hold time
DIS/DTC DCS
124
125
CFR
126
This unit uses one-dimensional MH format 127
Redundancy Compression Process Coding Mode
Modem Circuit Operation
Analog Unit
General
NCU Section
Line Relay RLY1
Bell Detection Circuit
Line Amplifier and Side Tone Circuits
Handset Circuit
Monitor Circuit
EXT. TEL
Circuit
Diagram
Operation Panel
Analog Switch IC1 Control
KEY Scan
Key Matrix
LCD Control
Sensor Detection
This power supply board uses the switching regulator method
Power Supply Board Section
Input Circuit
Rectifier Circuit
KX-FT21RS
Control Circuit and Detecting Circuit
Surge Absorber Circuit
Over Current Limiter O.C.L
Over Voltage Circuit
For the Schematic Diagrams
141
Printed Circuit Board
142
TP8 TP7 C26
SW201
D104 D103
C230 C231 C106
C225
IC101
L203
R215
Q203
145
F101
146
Printed Circuit Board Operation Board
147
Schematic Diagram
148
Schematic Diagram Analog Circuit
149
Schematic Diagram Switching Power Supply
150
Schematic Diagram Operation Circuit
151
152
153
Operation Panel Section
154
Upper Cabinet Section
155
Lower CABINET/P.C.B. Section
Motor Section
157
Actual Size of Screws and Washer
158
This replacement parts list is for KX-FT21RS only
Cabinet and Electrical Parts
159
160
Digital Board Parts
161
162
Analog Board Parts
163
164
Operation Board Parts
165
Power Supply Board Parts
Fixtures and Tools
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