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2-1

DPP-FP55

1.  MAIN board: Check of CN203, F302, IC201, IC410, Q205,  Q207,Q417 and

peripheral circuits.
• Is 5.0 V output to TP456?
• Is 3.3 V output to TP428?
• Does F301 have open-circuit?

2.  BGA board: IC101, IC102, IC103 and peripheral circuits

• Is 3.3 V output to TP104?
• Is 1.6 V output to TP101?

1. MAIN board: Check of CN203, CN701, Q103, Q106, peripheral ciruits and harnesses.
2. KEY board: Check of CN703, CN602, IC602, peripheral circuits and harnesses.

• Is 3.3 V input to 9-pin of CN602?
• When the Memory Stick is inserted, is 16-pin (MS detection) of  CN703 in

the L state?

3. BGA board: Check of IC104 and peripheral circuits.
4.  Check if the image in the Memory Stick is applicable file format (JPEG,BMP, TIF).
5.  Check if the Memory Stick has no problem.

1.  MAIN board: Check of CN203, CN701, Q104, Q105, peripheral ciruits and harnesses.
2.  KEY board: Check of CN703, CN603, IC602, peripheral circuits and harnesses.

• When SD is inserted, is 3.3 V input to 4-pin of CN603?
• When SD is inserted, is 23-pin (SD detection) of CN703 in the L state?

3.  BGA board: Check of IC104 and peripheral circuits.
4.  Check if the image in the SD card is applicable file format (JPEG, BMP,  TIF).
5.  Check if the SD card has no problem.

1.  Check the communication by “USBTest” in the service mode.
2. MAIN board: Check of  CN203, CN801 to IC304, peripheral circuits and harnesses.

• Is 5 V output from 5-pin of IC304? (Is 3.3 V input to 4-pin?)
• Check of FB801 and L801.

3.  BGA board: Check of CN102, IC104 and peripheral circuits.

• Check of R104 and R105.

1.  Check the communication by “USBTest” in the service mode.
2.  MAIN board: Check of CN202, CN203 and peripheral circuits.

• Is 5 V output to TP201 when PC is connected.
• Check of L203 and Q201.

3.  BGA board: Check of CN102, IC104 and peripheral circuits.

• Check of R107 and R108.

1. LCD board: Check of CN704 to CN706, FB401, FB402, LCD unit and peripheral

                   circuits.

•  Is 3.3 V output to 15-pin and 16-pin of CN705.
•  Is 8.5 V output to 14-pin of CN705

2. MAIN board: Check of CN203, CN702, IC411 and peripheral circuits.
3. BGA board: Check of CN102, IC104 and peripheral circuits.

1. Check the button operation by “Button Test” in the service mode.
2. KEY board:  Check of CN703, R701 to R707, R711 to R715, S402, S702, S703, S705,

            S706, S708 to S710 peripheral circuits.

3. MAIN board: Check of CN203, CN701, IC409, IC411, S701, S704, R708 to R710 and

             peripheral circuits.

4. BGA board: Check of CN102, IC104 and peripheral circuits.

1. Print the density check pattern (gray) by “Mechanic Test” in the service mode and

check the image.

2. MAIN board: Check of CN407, CN203, IC403, IC409, IC412 and peripheral circuits.

• Isn’t FB301 shorted?

3. BGA board: Check of CN102, IC101, IC102, IC103 and peripheral circuits.
4. LCD board: Check of THP401.

Power cannot be
turned on.

Memory Stick cannot be
recognized.

SD card cannot be
recognized.

PictBridge-capable
camera cannot be
recognized.

Personal computer cannot
be recognized.

LCD of main unit cannot
be displayed.

There is no response to
the key operation on the
operation panel.

Printed image is
abnormal, or printing
cannot be made.

Power supply

Memory card

External
connection

Indication and
operation

2-2

DPP-FP55

The troubles caused by the thermal printer can be classified into
the following 3 groups.

• Paper handling cannot be performed normally. (Paper feed/eject

trouble)

• Ink ribbon cannot be fed normally. (Ribbon trouble)
• Printing cannot be performed normally. (Printing trouble)

Example of each trouble, and the cause and remedy are described.

Trouble:

• Paper cannot be fed from the paper tray.
• Although the paper is fed from the paper tray, it is

stopped halfway.

Check:

• Check if the PU lever operation is normal by

performing the mode transition operation by
Mechanic Test in the service mode.

Normal:

Other cause

Abnormal: Abnormal thermal printer
Others:

• Decrease in frictional force due to the contamination

of paper feed roller

• Abnormal installation of paper tray

Remedy:

• When the thermal printer is abnormal, replace the

thermal printer.

• When the paper feed roller contamination is the cause,

perform the cleaning (wipe dry) of paper feed roller.

• When the paper tray installation is abnormal, check

if the PU lever is placed under the tray plate and
reinstall the paper tray.

Trouble:

• Paper is normally fed, but the paper is ejected without

printing (white paper).

• Multiple sheets of paper are fed continuously.

(Multiple feed)

Cause:

   Paper detection failure

Remedy:

• Replace the MAIN board.
• If the trouble persists after the MAIN board is

replaced, replace the thermal printer.

Trouble:    Although paper is fed, it is ejected backwards as it is.
Cause:

   Paper detection failure

Remedy:

• Replace the MAIN board.
• If the trouble persists after the MAIN board is

replaced, replace the thermal printer.

Trouble:    Paper is folded and stuck in the printer, and it cannot be

   removed. (Paper jamming)

Cause:

• Abnormal thermal printer
• Abnormal print cartridge

Remedy:

• Remove the thermal printer from the lower cabinet

and remove the paper.

• When the thermal printer is abnormal, replace the

thermal printer.

• Check the print cartridge. (Deformation, damage,

slack in ribbon, etc. of print cartridge)

Trouble:

Ribbon is wrapped around the grid roller and pinch
roller, and cannot be removed. (Ribbon jamming)

Cause:

• Abnormal print cartridge
• Abnormal thermal printer

Remedy:

• Remove the thermal printer from the lower cabinet.

Rotate the gear that is  engaged with the stepping
motor gear and remove the ribbon.

• When the thermal printer is abnormal, replace the

thermal printer.

Trouble:

• Ribbon continues to rotate at the start of printing.
• Ribbon does not rotate at the start of printing.

Cause:

• Abnormal thermal printer
• Abnormal MAIN board
• Abnormal installation of paper tray and print cartridge

Remedy:

• Replace the MAIN board.
• If the trouble persists after the MAIN board is

replaced, replace the thermal printer.

• Reinstall the paper tray and print cartridge.

Trouble:

• Paper is ejected without printing (white paper) and

“Print cartridge is not correct” is displayed.

Cause:

• Print cartridge assembly failure
• Abnormal thermal printer
• Abnormal MAIN board

Remedy:

• Replace the ribbon cassette.
• Replace the MAIN board.
• If the trouble persists after the MAIN board is

replaced, replace the thermal printer.

2-3E

DPP-FP55

Trouble:

Abnormal print appears on the printing side of paper at
regular pitch intervals in the paper feed direction.

Note:

• Pitch interval 22 mm: Abnormal pinch roller
• Pitch interval 31.4 mm/15.7 mm:Abnormal platen

roller

• Pitch interval 9.4 mm: Abnormal grid roller
• Other cases: Abnormal gear, etc.

Cause:

• Adhesion of foreign substances (such as dust and

grease)

• Defective molding of platen roller
• Flaw, damage

Remedy:

• When the dust adheres to the pinch roller, perform

the cleaning using the cleaning cartridge supplied with
this unit.(If trouble persists after performing the
cleaning once, repeat the cleaning a few times.)

• Remove the thermal printer from the lower cabinet

and perform the cleaning of each roller. (Remove the
dust or other contamination using the tools such as a
cloth-wrapped stick in its end, sellotape or gum  tape.)

• Remove the thermal printer from the lower cabinet

and remove the foreign substances adhered to the gear.

• If the trouble is caused by the flaw or damage of parts,

replace the thermal printer.

Trouble:

Streaks appear on the printing side of paper in the paper
feed direction.

Cause:

• Adhesion of foreign substances to thermal head
• Thermal head breakage
• Flaw or adhesion of foreign substance on the ribbon

cassette (contact area on the printing side)

• Flaw or burr on the paper of printing side

Remedy:

• Perform the cleaning using the cleaning cartridge

supplied with this unit.

• Remove the foreign substance from the ribbon

cassette, or replace it.

• If trouble persists after performing the cleaning,

replace the thermal printer.

Trouble:

Colored streaks appear on the printing side of paper.
(Paperwrinkle occurred.)

Cause:

• Abnormal thermal printer
• Abnormal ribbon cassette

Remedy:

• Replace the thermal printer.
• Check the assembling and damage status of ribbon

cassette.

Trouble:

Print output is apparently abnormal. (White paper
ejection, partial white streaks, wide black band, etc.)

Cause:

• Connection failure of the flexible flat cable (FFC) of

thermal head (disconnected, not correctly inserted)

• Abnormal connector of FFC of thermal head (bridge)
• Abnormal thermal head

Remedy:

• Check if FFC is correctly connected.
• Replace the MAIN board.
• Replace the thermal printer.

Trouble:

Faint area appears on the printing side.

Cause:

Abnormal thermal printer

Remedy:

Replace the thermal printer.

When checking the abnormal state, be careful of the following.
•

Only the specified print pack (ribbon and printing paper) can
be used in this unit. Check the customer’s ribbon and printing
paper. The ribbon and printing paper can be used only once. In
case that the customer rewinds the ribbon or reuses the paper
intentionally, the trouble such as entangling of ribbon may
occur.

•

In case that the print pack is exposed to high temperature or
high humidity environment for long time after it is opened, the
specified performance may not be obtained. Especially, the
printing paper may be warped badly. In such case, normal paper
feeding and printing may not be performed. If possible, check
the condition of customer’s print pack.

•

The abnormal printing may be caused by the digital camera,
memory card or PC that the customer uses. Therefore, if
possible, check the trouble with the equipment that the customer
uses.

DPP-FP55