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Panasonic
KX-FT21RS
Countermeasure
1
42
166
166
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166 pages, 4.81 Mb
KX-FT21RS
Countermeasure
42
Contents
(Russia)
CONTENTS
Page
1 INTRODUCTION
7 FOR THE SCHEMATIC DIAGRAMS
8 PRINTED CIRCUIT BOARD
1 INTRODUCTION
1.1.SAFETY PRECAUTIONS
1.2.INSULATION RESISTANCE TEST
1.3.FOR SERVICE TECHNICIANS
1.4.BATTERY CAUTION
1.5.AC CAUTION
1.6.PERSONAL SAFETY PRECAUTIONS
1.7.FEATURES
1.8.SPECIFICATIONS
1.9.OPTIONAL ACCESSORIES
1.10. CCITT No. 1 TEST CHART
1.11. LOCATION OF CONTROLS
1.12. CONNECTIONS
1.13. INSTALLATION
(Delete)
1.13.4. To select characters with the dial keypad
1.13.5. Documents you can send
1.14. MAINTENANCE ITEMS AND COMPONENT LOCATIONS
Page
1.14.3. MAINTENANCE
1.14.3.1. CLEANING THE DOCUMENT FEEDER UNIT
Disconnect the power cord and the telephone
line cord
Caution:
1.14.3.2. CLEANING THE THERMAL HEAD
Do not push on the black cover
1.14.3.3. CLEANING THE PICK UP ROLLER
........Refer to 4 DISASSEMBLY INSTRUCTION
2 TROUBLESHOOTING GUIDE
2.1.TROUBLESHOOTING SUMMARY
2.2.USER RECOVERABLE ERRORS
2.2.1.Document Jam
2.3.TROUBLESHOOTING DETAILS
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Page
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Page
3.Multiple feed
3.1. ADJUSTING THE FEED PRESSURE
4.Skew
Page
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Page
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2.3.4.2.Communication Section
2.3.4.2.1. Defective
facsimile section
Page
Page
3.Reception problem
There is the receiving problem when sometimes the below errors may be occurred
OUT OF PAPER CHECK COVER
CHECK DOCUMENT PAPER JAM
2.2. User Recoverable Errors
Page
The following 2 causes can be considered for this
Cause 1:
(Cause and Countermeasure)
(A)The TEL/FAX DELAYED RING count should be 1. (User parameter: code No. 78)
(B)
(Causes and Countermeasures)
(Cause A)
(Countermeasure A)
(Cause B)
(Countermeasure B)
Transmission Operation:
Reception Operation:
Page
2.4.4. Service Function Table
Countermeasure
Page
Page
Page
Page
Page
Page
Page
2.3.4.2.2.Remote programming
2. Program mode table
1. Entering the remote programming mode and Changing service codes
Hint:
Page
2.Program Mode Table
2.4.4. SERVICE FUNCTION TABLE
2.3.4.3.Digital Board Section
Please refer to the 2.3.4.3.1. Digital Block Diagram
Diagram Block Digital
Page
Page
I/O and Pin No. Diagram
Page
Page
NG Example
2.3.4.3.2.Check the Status of the Digital Board
2.3.4.4.Analog Board Section
Page
2.3.4.5.Power Supply Board Section
1.Key components for troubleshooting
Caution:
Page
Page
3.Broken parts repair details (D101, D102, D103, D104)
2.3.4.6.Operation Board Section
2.3.4.7.Sensor Section
2.3.4.8.Read Section
Page
Page
2.4.PROGRAMMING AND LISTS
Page
2.4.4.SERVICE FUNCTION TABLE
See 2.2. USER RECOVERABLE ERRORS
See 2.3.4.2.1. Defective facsimile section
See 2.6.1. PRINTOUT EXAMPLE
2.4.5.SERVICE MODE SETTINGS (Example of a printed out list)
2.4.6.OTHER
2.5.TEST FUNCTIONS
2.5.1.DTMF SIGNAL TONE TRANSMIT SELECTION
2.5.2.BUTTON CODE TABLE
2.5.3.PRINT TEST PATTERN
2.6.JOURNAL
Page
3 ADJUSTMENTS
3.1.ADJUSTING THE FEED PRESSURE
4 DISASSEMBLY INSTRUCTIONS
Page
Page
Page
Page
Page
Page
Page
Page
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Page
5 HOW TO REPLACE THE FLAT PACKAGE IC
5.1.PREPARATION
5.2.FLAT PACKAGE IC REMOVAL PROCEDURE
5.3.FLAT PACKAGE IC INSTALLATION PROCEDURE
5.4.BRIDGE MODIFICATION PROCEDURE
6 CIRCUIT OPERATIONS
6.1.CONNECTION DIAGRAM
6.2.GENERAL BLOCK DIAGRAM
Diagram Block General
SECTION CONTROL
6.3.2.ASIC (IC1)
This custom IC is used for general FAX operations
1.CPU
This model uses a Z80 equivalent CPU operating at 6MHz
2.RTC
Page
Page
Page
6.3.3.ROM (IC2)
6.3.4.RAM (IC3)
6.3.5.Reset Circuit
6.3.6.SRAM and RTC BACK UP CIRCUIT
1.Function
2.Circuit Operation
6.3.7.SUPERVISION CIRCUIT FOR THE THERMAL HEAD TEMPERATURE
6.3.8.LED ARRAY(CIS)
6.4.FACSIMILE SECTION
6.4.2. Block Diagram
6.4.3.THERMAL HEAD
This unit utilizes state of the art thermal printer technology
6.3.1. Block Diagram
Accordingly, the strobe width is determined
Page
6.4.4.SCANNING BLOCK
6.4.5.STEPPING MOTOR DRIVE CIRCUIT
6.4.6.GEAR SECTION
6.4.6.1.Mode Selection
Fig. A
Fig. B
6.4.6.2.Mode Operation
A: Transmit mode
B: Receive mode
C: Copy mode
6.4.6.3.Mechanical Movements in the Main Operations
6.4.6.3.2.Scanning
6.4.6.3.3.Printing
Page
6.5.SENSORS AND SWITCHES
6.5.1.Motor Position Sensor
6.5.2.Recording Paper Sensor (SW201)
6.5.3.Read Position Sensor (PS2)
6.5.4.Document Sensor (PS1)
6.6.MODEM SECTION
Phase E
4.Concerning Transmission Time
Control time:
Image transmission time:
Hold time:
Explanation of Signals
Signal.....DIS (Digital Identification Signal)
Identification Signal Format.....00000001
Function:
Signal.....DCS (Digital Command Signal)
Identification Signal Format.....X1000001
(Example)
Page
b. Redundancy Compression Process Coding Mode
6.6.2.MODEM CIRCUIT OPERATION
1.Facsimile Transmission/DTMF Line Send
2.Facsimile Reception
3.DTMF Transmission
(DTMF Monitor Tone)
Unit
Block
6.8.NCU SECTION
6.8.5.LINE AMPLIFIER AND SIDE TONE CIRCUITS
6.9.ITS (Integrated telephone System) and MONITOR SECTION
6.10. EXT. TEL
Diagram Circuit
6.11. OPERATION PANEL
6.11.2. SENSOR DETECTION
6.11.3. LCD CONTROL
6.12. POWER SUPPLY BOARD SECTION
Page
[Surge Absorber Circuit]
[Control Circuit and Detecting Circuit]
[Over Current Limiter (O.C.L)]
[Over Voltage Circuit]
Dummy load method (to quickly check the power supply output)
7 FOR THE SCHEMATIC DIAGRAMS
8.1.PRINTED CIRCUIT BOARD (DIGITAL BOARD): COMPONENT VIEW
IC2
TP2
TP4
TP3
8.2.PRINTED CIRCUIT BOARD (DIGITAL BOARD): BOTTOM VIEW
TP9
TP6
8.3.PRINTED CIRCUIT BOARD (ANALOG BOARD): COMPONENT VIEW
ZNR2
CN2
8.4.PRINTED CIRCUIT BOARD (ANALOG BOARD): BOTTOM VIEW
8.5.PRINTED CIRCUIT BOARD (SWITCHING POWER SUPPLY) (COMPONENT VIEW)
PRIMARY
8.6.PRINTED CIRCUIT BOARD (OPERATION BOARD)
9.1.SCHEMATIC DIAGRAM (DIGITAL CIRCUIT)
9.2.SCHEMATIC DIAGRAM (ANALOG CIRCUIT)
Page
9.4.SCHEMATIC DIAGRAM (OPERATION CIRCUIT)
10 TERMINAL GUIDE OF THE IC´S TRANSISTORS AND DIODES
11 FIXTURES AND TOOLS
12 CABINET, MECHANICAL AND ELECTRICAL PARTS LOCATION
12.1. OPERATION PANEL SECTION
12.2. UPPER CABINET SECTION
12.3. LOWER CABINET/P.C.B. SECTION
12.4. MOTOR SECTION
12.5. ACTUAL SIZE OF SCREWS AND WASHER
13 ACCESSORIES AND PACKING MATERIALS
14 REPLACEMENT PARTS LIST
14.1.CABINET AND ELECTRICAL PARTS
DIGITAL BOARD PARTS
Page
ANALOG BOARD PARTS
Page
OPERATION BOARD PARTS
14.5.POWER SUPPLY BOARD PARTS
FIXTURES AND TOOLS