Panasonic KX-FT57E Service Manual ▷ View online
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KX-FT57E
TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
Page
1. Troubleshooting Summary .................................................................... 22
1-1. Troubleshooting ..................................................................... 22
1-2. Precautions ............................................................................ 22
2. User Recoverable Errors ....................................................................... 23
3. Troubleshooting Details ................................................................... 24~91
3-1. Outline ................................................................................... 24
3-2. Starting troubleshooting ......................................................... 24
3-3. Troubleshooting items table .................................................. 25
3-4. Simple check-list .................................................................... 26
3-5. ADF section ..................................................................... 27~36
3-6. Communication section ................................................... 37~57
3-7. Digital board section ........................................................ 58~72
3-8. Analog board section ....................................................... 73~76
3-9. Digital Speaker phone section ......................................... 77, 78
3-10. Power supply section ....................................................... 79~82
3-11. Operation board section ........................................................ 83
3-12. Sensor section ................................................................. 84, 85
3-13. Read section .................................................................... 86~90
3-14. Thermal head section ............................................................ 91
4. Programming and Lists ................................................................... 92~97
5. Test Functions ................................................................................. 98, 99
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KX-FT57E
1. TROUBLESHOOTING SUMMARY
1-1. Troubleshooting
After having confirmed the abnormal condition by asking the user, troubleshoot according to the instructions in
Observe the following precautions when troubleshooting.
Observe the following precautions when troubleshooting.
1-2. Precautions
1) If there is trouble with the print quality or the paper feed, first check that the installation space and print
paper meets the specifications. Then check that 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 and securely.
Moreover, if the abnormality occurs randomly, check very carefully.
3) When testing with the AC power connected to the unit, exercise utmost care when handling the electric parts
in order to avoid electric shock 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.
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KX-FT57E
TROUBLESHOOTING GUIDE
2. USER RECOVERABLE ERRORS
If the unit detects a problems, the following messages will appear on the display.
DISPLAY MESSAGE
CAUSE AND REMEDY
CALL SERVICE
•
There is something wrong with the unit. Contact your service personnel.
[Check the thermistor on the thermal head and connector lead. (for technicians)]
[This error is displayed when the thermal head does not warm up.]
[This error is displayed when the thermal head does not warm up.]
•
The back lid is open. Close it.
•
The handset and handset cradle have been removed when you connect the power
cord.
--- When you want to use the handset and handset cradle, install the handset cradle
--- When you want to use the handset and handset cradle, install the handset cradle
correctly.
--- When you do not use the handset and handset cradle, set the handset switch to
NO HANDSET. Then, disconnect and connect the power cord again.
•
The document is not fed into the unit properly. Reinsert the document.
If the misfeeding occurs frequently, clean the document feeder rollers inside the unit.
If the problem remains, adjust the feeder pressure.
If the problem remains, adjust the feeder pressure.
•
Attempted to transmit a document longer than 600 mm (23
5
/
8
"). Pres the STOP button
and remove the document. Divide the document into two or more sheets and try again.
[If you do wish to devide the document, change the service code #559 to "OFF". Refer
to page 94.]
[If you do wish to devide the document, change the service code #559 to "OFF". Refer
to page 94.]
•
Memory (phone numbers, parameters, etc.) has been erased. Re-program.
•
There is no space to store new stations in the EASY DIAL directory. Edit or erase
unnecessary stations.
•
The unit has documents in memory. Install a new recording paper roll or clear the
jammed paper.
•
There is no room left in memory to record a message. Erase some or all of the
messages.
•
The memory is full of received documents. Install a new recording paper roll or clear
the jammed paper.
•
The receiving unit is busy or ran out of recording paper. Try again.
•
The TEL/FAX greeting message has not been recorded. Record a greeting message.
•
The unit ran out of recording paper. Install a new recording paper roll.
•
A recording paper jam occurred. Clear the jammed paper.
•
The other fax machine does not provide the polling function. Check with the other
party.
•
The receiving unit is busy or ran out of recording paper. Try again.
•
The document is jammed. Remove the jammed document.
•
Attempted to transmit a document longer than 600 mm (23
5
/
8
"). Press the STOP button
and remove the document. Divide the document into two or more sheets and try again.
•
A transmission error occurred. Try again.
•
The unit is too hot. Let the unit cool down.
[If many copies are nearly all black, this message will be displayed.]
[When this occurs, open the front cover and let the unit cool down.]
[When this occurs, open the front cover and let the unit cool down.]
CHECK COVER
CHECK CRADLE
CHECK MEMORY
CHECK DOCUMENT
MEMORY FULL
NO RESPONSE
NO TEL GREETING
OUT OF PAPER
PAPER JAMMED
POLLING ERROR
REDIAL TIME OUT
REMOVE DOCUMENT
TRANSMIT ERROR
UNIT OVERHEATED
FAX IN MEMORY
DIRECTORY FULL
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KX-FT57E
Power on.
Check LCD.
Plug in the AC cord.
slightly changes
good
No
Yes
Blank
AC
12:00AM
or
LCD
LCD
LCD
Already known symptom
Determine the symptom using
the check list. (See page 25.)
the check list. (See page 25.)
See the table for
troubleshooting items.
troubleshooting items.
See the digital board
section.
(See page 58.)
section.
(See page 58.)
See the digital board
section.
(See page 58.)
section.
(See page 58.)
Blank LCD means that the power line
is broken (open-circuit).
is broken (open-circuit).
Blinking
3. TROUBLESHOOTING OF DETAILS
3-1. OUTLINE
The troubleshooting guide provides a logical path of deduction to assist in locating a fault and suggests methods of restoring
the unit to full working condition. Use the reported symptoms of the fault to determine the best troubleshooting method.Even
difficult faults can be tracad to a specific block or area, for example, the "Digital Board" or "Image Sensor".
A variety of fault descriptions from customers often point to the same area and, for this reason, careful analysis of the
reported symptoms is required. After every repair, test all functions to ensure no problems are evident.
the unit to full working condition. Use the reported symptoms of the fault to determine the best troubleshooting method.Even
difficult faults can be tracad to a specific block or area, for example, the "Digital Board" or "Image Sensor".
A variety of fault descriptions from customers often point to the same area and, for this reason, careful analysis of the
reported symptoms is required. After every repair, test all functions to ensure no problems are evident.
3-2. STARTING TROUBLESHOOTING
• Select the appropriate troubleshooting method according to the symptoms.
Click on the first or last page to see other KX-FT57E service manuals if exist.