Panasonic KX-FT25LA User manual

©2000 Kyushu Matsushita Electric Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
KX-FT25LA
(Latin America)
Facsimile with Telephone Answering system
ORDER NO. KMF0002393C3

1 INTRODUCTION 3
1.1. SAFETY PRECAUTIONS 3
1.2. INSULATION RESISTANCE TEST 3
1.3. FOR SERVICE TECHNICIANS 3
1.4. BATTERY CAUTION 3
1.5. AC CAUTION 4
1.6. PERSONAL SAFETY PRECAUTIONS 5
1.7. FEATURES 6
1.8. SPECIFICATIONS 7
1.9. OPTIONAL ACCESSORIES 7
1.10. CCITT No. 1 TEST CHART 8
1.11. LOCATION OF CONTROLS 9
1.12. CONNECTIONS 11
1.13. INSTALLATION 12
1.14. MAINTENANCE ITEMS AND COMPONENT LOCATIONS
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2 TROUBLESHOOTING GUIDE 19
2.1. TROUBLESHOOTING SUMMARY 19
2.2. USER RECOVERABLE ERRORS 20
2.3. TROUBLESHOOTING DETAILS 22
2.4. PROGRAMMING AND LISTS 79
2.5. TEST FUNCTIONS 86
3 ADJUSTMENTS 88
3.1. ADJUSTING THE FEED PRESSURE 88
4 DISASSEMBLY INSTRUCTIONS 89
5 HOW TO REPLACE THE FLAT PACKAGE IC 100
5.1. PREPARATION 100
5.2. FLAT PACKAGE IC REMOVAL PROCEDURE 100
5.3. FLAT PACKAGE IC INSTALLATION PROCEDURE 101
5.4. BRIDGE MODIFICATION PROCEDURE 101
6 CIRCUIT OPERATIONS 102
6.1. CONNECTION DIAGRAM 102
6.2. GENERAL BLOCK DIAGRAM 103
6.3. CONTROL SECTION 105
6.4. FACSIMILE SECTION 113
6.5. SENSORS AND SWITCHES 123
6.6. MODEM SECTION 126
6.7. Analog Unit Block Diagram 133
6.8. NCU SECTION 134
6.9. ITS (Integrated telephone System) and MONITOR
SECTION 136
6.10. ATAS (Automatic Telephone Answering System)
SECTION 136
6.11. OPERATION PANEL 138
6.12. POWER SUPPLY BOARD SECTION 140
7 FOR THE SCHEMATIC DIAGRAMS 142
8 PRINTED CIRCUIT BOARD 143
8.1. PRINTED CIRCUIT BOARD (DIGITAL BOARD):
COMPONENT VIEW 143
8.2. PRINTED CIRCUIT BOARD (DIGITAL BOARD): BOTTOM
VIEW 144
8.3. PRINTED CIRCUIT BOARD (ANALOG BOARD):
COMPONENT VIEW 145
8.4. PRINTED CIRCUIT BOARD (ANALOG BOARD):
BOTTOM VIEW 146
8.5. PRINTED CIRCUIT BOARD (SWITCHING POWER
SUPPLY) 147
8.6. PRINTED CIRCUIT BOARD (OPERATION BOARD) 148
9 SCHEMATIC DIAGRAM 149
9.1. SCHEMATIC DIAGRAM (DIGITAL CIRCUIT) 149
9.2. SCHEMATIC DIAGRAM (ANALOG CIRCUIT) 150
9.3. SCHEMATIC DIAGRAM (SWITCHING POWER SUPPLY)
151
9.4. SCHEMATIC DIAGRAM (OPERATION CIRCUIT) 152
10 TERMINAL GUIDE OF THE IC·S TRANSISTORS AND DIODES
153
11 FIXTURES AND TOOLS 154
12 CABINET, MECHANICAL AND ELECTRICAL PARTS
LOCATION 155
12.1. OPERATION PANEL SECTION 155
12.2. UPPER CABINET SECTION 156
12.3. LOWER CABINET/P.C.B. SECTION 157
12.4. MOTOR SECTION 158
12.5. ACTUAL SIZE OF SCREWS AND WASHER 159
13 ACCESSORIES AND PACKING MATERIALS 160
14 REPLACEMENT PARTS LIST 161
14.1. CABINET AND ELECTRICAL PARTS 161
14.2. DIGITAL BOARD PARTS 162
14.3. ANALOG BOARD PARTS 164
14.4. OPERATION BOARD PARTS 165
14.5. POWER SUPPLY BOARD PARTS 166
14.6. FIXTURES AND TOOLS 167
CONTENTS
Page Page
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1 INTRODUCTION
1.1. SAFETY PRECAUTIONS
1.Before servicing, unplug the AC power cord to prevent an electric shock.
2.When replacing parts, use only the manufacturer´s recommended components.
3.Check the condition of the power cord. Replace if wear or damage is evident.
4.After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5.Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent
the customer from being exposed to shock hazards.
1.2. INSULATION RESISTANCE TEST
1.Unplug the power cord and short the two prongs of the plug with a jumper wire.
2.Turn on the power switch.
3.Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part (screw
heads, control shafts, bottom frame, etc.).
Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.
4. If the measurement is outside the specified limits, there is a possibility of a shock hazard.
The equipment should be repaired and rechecked before it is returned to the customer.
1.3. FOR SERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1.Cover the plastic part´s boxes with aluminum foil.
2.Ground the soldering irons.
3.Use a conductive mat on the worktable.
4.Do not touch the IC or LSI pins with bare fingers.
1.4. BATTERY CAUTION
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacture. Dispose of used batteries according to the
manufacturer´s instructions.
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1.5. AC CAUTION
For safety, before closing the lower cabinet, please make sure of the following precautions.
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1.6. PERSONAL SAFETY PRECAUTIONS
1.6.1. MOVING SECTIONS OF THE UNIT
Be careful not to let your hair, clothes, fingers, accessories, etc., become caught in any moving sections of the unit.
The moving sections of the unit are the rollers and a gear. There is a separation roller and a document feed roller which are rotated
by the document feed motor. A gear rotates the two rollers. Be careful not to touch them with your hands, especially when the unit
is operating.
1.6.2. LIVE ELECTRICAL SECTIONS
All the electrical sections of the unit supplied with AC power by the AC power cord are live.
Never disassemble the unit for service with the AC power supply plugged in.
(Bottom view)
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General
·Desktop type
·LCD (Liquid Crystal Display) readout
·Help function
·Copier function
·Digital answering system
Facsimile
·Space Saving Compact Design
·Resolution: standard/fine/super fine/halftone
·Copier Function
·Automatic Document Feeder (10 Sheets)
·Help Printout
·Easy-to-view LCD (15 Characters)
Integrated telephone system
·Electric Volume Control
·Redialing function
·Temporary tone dialing
·Electric telephone directory
·Digital duplex speakerphone
Digital answering system
·20-minute recording time
1.7. FEATURES
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1.8. SPECIFICATIONS
Applicable Lines: Public Switched Telephone Network
Document Size: Max. 216 mm (8 1/2”) in width
Max. 600 mm (23 5/8”) in length
Effective Scanning Width: 208mm (8 3/16”)
Recording Paper Size: 216 mm max. 30 m (8 1/2”×98”) roll
Effective Printing Width: 208 mm (8 3/16”)
Transmission Time*: Approx. 15 s/page (Original mode)**
Approx. 30 s/page (G3 Normal mode)
Scanning Density: Horizontal:
8 pels/mm (203 pels/inch)
Vertical:
3.85 lines/mm (98 lines/inch)—STANDARD mode
7.7 lines/mm (196 lines/inch)—FINE/HALF TONE mode
15.4 lines/mm (392 lines/inch)—SUPER FINE mode
Halftone Level: 64-level
Scanner Type: Contact Image Sensor (CIS)
Printer Type: Thermal Printing
Data Compression System: Modified Huffman (MH), Modified READ (MR)
Modem Speed: 9,600 / 7,200 / 4,800 / 2,400 bps; Automatic Fallback
Operating Environment: 5°C—35°C (41°F—95°F), 45 %—85 % RH (Relative Humidity)
Dimensions (H×W×D): 122 mm × 338 mm × 240 mm (4 13/16” × 13 5/16” × 9 7/16”)
Mass (Weight): Approx. 2.5 kg (5.5 lb.)
Power Consumption: Standby: Approx. 7.0 W
Transmission: Approx. 18 W
Reception: Approx. 26 W (When receiving the CCITT No. 1 Test Chart)
Copy: Approx. 24 W (When copying the CCITT No. 1 Test Chart)
Maximum: Approx. 120 W (When copying a 100 % black document)
Power Supply: 120 V AC, 60 Hz
Memory Capacity: Approx. 20 minutes of recording time including the greeting message***
* Transmission speed depends upon the contents of the pages, resolution, telephone line conditions and capability of the other
party´s machine.
** The 15 second speed is based upon the CCITT No. 1 Test Chart.
*** Recording time may be reduced by calling party´s background noise.
Note:
·Any details given in these instructions are subject to change without notice.
·The pictures and illustrations in these instructions may vary slightly from the actual product.
1.9. OPTIONAL ACCESSORIES
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1.10. CCITT No. 1 TEST CHART
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1.11. LOCATION OF CONTROLS
1.11.1. OVERVIEW
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1.11.2. CONTROL PANEL
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1.12. CONNECTIONS
NOTE
When you operate this products, the power outlet should be near the product and easily accessible.
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1.13. INSTALLATION
1.13.1. INSTALLING THE RECORDING PAPER
Note:
Only use the included roll of paper or specified recording paper, or else the print quality may be affected and/or excessive
thermal head wear may occur.
For accessory order information.
When the power cord is connected, every time you close the cover a message will be printed. If the recording paper is set to
the wrong side, the message will not be printed. Install the paper correctly.
1.13.2. Document Stacker
Install the document stacker.
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1.13.3. SETTING YOUR LOGO
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1.13.4. To select characters with the dial keypad
Pressing the dial keys will select a character as shown below.
1.13.5. Documents you can send
Note:
Remove clips, staples or other similar fastening objects.
Check that ink, paste or correction fluid has dried.
Do not send the following types of documents. Use copies for fax transmission.
·Chemically treated paper such as carbon or carbonless duplicating paper
·Electrostatically charged paper
·Heavily curled, creased or torn paper
·Paper with a coated surface
·Paper with a faint image
·Paper with printing on the opposite side that can be seen through the front (e.g. newspaper)
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1.14. MAINTENANCE ITEMS AND COMPONENT LOCATIONS
1.14.1. OUTLINE
MAINTENANCE AND REPAIRS ARE PERFORMED USING THE FOLLOWING STEPS.
1.Periodic maintenance
Inspect the equipment periodically and if necessary, clean any contaminated parts.
2.Check for breakdowns
Look for problems and consider how they arose.
If the equipment can be still used, perform copying, self testing or communication testing.
3.Check equipment
Perform copying, self testing and communication testing to determine if the problem originates from the transmitter, receiver or
the telephone line.
4.Determine causes
Determine the causes of equipment problem by troubleshooting.
5.Equipment repairs
Repair or replace the defective parts and take appropriate measures at this stage to ensure that the problem will not recur.
6.Confirm normal operation of the equipment
After completing the repairs, conduct copying, self testing and communication testing to confirm that the equipment operates
normally.
7.Record keeping
Make a record of the measures taken to rectify the problem for future reference.
1.14.2. MAINTENANCE CHECK ITEMS/COMPONENT LOCATIONS
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1.14.2.1. MAINTENANCE LIST
1.14.2.2. MAINTENANCE CYCLE
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1.14.3. MAINTENANCE
1.14.3.1. CLEANING THE DOCUMENT FEEDER UNIT
If misfeeding occurs frequently or if dirty patterns or black bands appear on a copied or transmitted document, clean the document
feeder.
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1.14.3.2. CLEANING THE THERMAL HEAD
If dirty patterns or black bands appear on a copied or received document, clean the thermal head.
Cover open
button
Thermal head
Caution:
Do not push on
the black cover
Disconnect the power cord and the telephone
line cord.
Open the cover by pressing the cover open button.
Clean the thermal head with a cloth moistened with
isopropyl rubbing alcohol, and let it dry thoroughly.
Close the cover securely by pushing down on both
ends.
Connect the power cord and the telephone line
cord.
Caution:
To prevent a malfunction due to static electricity, do not use
a dry cloth and do not touch the thermal head directly with
your fingers.
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3
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5
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2 TROUBLESHOOTING GUIDE
2.1. TROUBLESHOOTING SUMMARY
2.1.1. TROUBLESHOOTING
After confirming the problem by asking the user, troubleshoot according to the instructions and observe the following precautions.
2.1.2. PRECAUTIONS
1.If there is a problem with the print quality or the paper feed, first check if the installation space and the print paper meets the
specifications, the paper selection lever/paper thickness lever is set correctly, and the paper is set correctly without any slack.
2.Before troubleshooting, first check that the connectors and cables are connected correctly (not loose).
If the problem occurs randomly, check it very carefully.
3.When connecting the AC power cord with the unit case and checking the operation, exercise utmost care when handling electric
parts in order to avoid electric shocks and short-circuits.
4.After troubleshooting, double check that you have not forgotten any connectors, left any loose screws, etc.
5.Always test to verify that the unit is working normally.
2.1.3. WHEN YOU DON´T KNOW HOW TO OPERATE THE UNIT, USE THE HELP
FUNCTION
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2.2. USER RECOVERABLE ERRORS
If the unit detects a problem, the following messages will appear on the display.
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