DPP-FP55 - Sony Other Service Manuals Service Manual (repair manual). Page 13

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