FUJIFILM FinePix A310 TROUBLESHOOTING GUIDE
DIGITAL CAMERA
FinePix A310
TROUBLESHOOTING GUIDE
US/EU/EG/CA/GE/AS-Model
WARNING
THE COMPORNENTS IDENTIFIED BY THE MARK “ ” ON THE SCHEMATHIC
DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR SAFETY.
PLEASE REPLACE ONLY BY THE COMPONENTS SPECIFIED ON THE SCHEMATHIC
DIAGRAM AND IN THE PARTS LIST.
IF YOU USE WITH PART NUMBER UN-SPECIFIED, IT MAY RESULT IN A FIRE AND AN
ELECTORICAL SHOCK.
FUJI PHOTO FILM CO.,LTD.
Ref.No.:ZM00490-400
Printed in Japan 2003.12(S.S.)
SAFETY CHECK-OUT
After correcting the original problem, perform the following
safety check before return the product to the costomer.
FinePix A310 TROUBLESHOOTING GUIDE
2.5A 125V
2.5A 125V
RISK OF FIREREPLACE FUSE
AS MARKED
WARNING!
HIGH VOLTAGE
2
FinePix A310 TROUBLESHOOTING GUIDE
TABLE OF CONTENTS
1. Power-related ...........................................................................................4
1-1 Power 1 ............................................................................................................................................... 4
1-2 Power 2 ............................................................................................................................................... 4
1-3 Power 3 ............................................................................................................................................... 5
1-4 Power 4 ............................................................................................................................................... 5
1-5 Power 5 ............................................................................................................................................... 5
1-6 Power 6 ............................................................................................................................................... 6
1-7 Power 7 ............................................................................................................................................... 6
1-8 Power 8 ............................................................................................................................................... 7
2. Image-related ............................................................................................ 7
2-1 Image 1................................................................................................................................................ 7
2-2 Image 2................................................................................................................................................ 8
2-3 Image 3................................................................................................................................................ 9
2-4 Image 4................................................................................................................................................ 9
2-5 Image 5...............................................................................................................................................10
3. LCD-related .............................................................................................10
3-1 LCD 1 .................................................................................................................................................. 10
3-2 LCD 2 .................................................................................................................................................. 11
3-3 LCD 3 .................................................................................................................................................. 11
3-4 LCD 4 .................................................................................................................................................. 12
4. Switch-related .........................................................................................12
4-1 Switch 1 ..............................................................................................................................................12
4-2 Switch 2 ..............................................................................................................................................13
4-3 Switch 3 ..............................................................................................................................................13
5. Video Out-related ...................................................................................14
5-1 Video 1 ............................................................................................................................................... 14
6. Zoom Lens-related .................................................................................14
6-1 Zoom 1 ................................................................................................................................................14
6-2 Zoom 2 ................................................................................................................................................15
6-3 Zoom 3 ................................................................................................................................................16
6-4 Zoom 4 ................................................................................................................................................17
6-5 Zoom 5 ................................................................................................................................................18
3
FinePix A310 TROUBLESHOOTING GUIDE
1. Power-related
1-1 Power 1
Phenomenon of problem
Power does not come ON.
The current of 3.14A always flows, even if the camera is switched off.
Results of Analysis
Solder on the cathode of the diode (D307) on the main board has flowed under the diode, shorting the
pattern.
Solder has flowed under the di-
ode at the position indicated by
the arrow.
Repair Method
Resolder the diode (D307).
1-2 Power 2
Phenomenon of problem
Power cuts out immediately when either the AC adapter or the battery is used.
When the backup condenser charges the camera detects a USB connection, even though the USB cable is
not connected.
Operation returns to normal when the charge in the backup condenser decreases slightly.
Results of Analysis
Due to corrosion of the USB jack.
Repair Method
Replace main board.
4
<Main unit> <Enlarged view of corrosion>
FinePix A310 TROUBLESHOOTING GUIDE
1-3 Power 3
Phenomenon of problem
Power does not come on with either the AC adapter or the battery.
Results of Analysis
Problem with main board.
No output from the transistor (Q302) POWER_ON circuit.
Voltage measurement showed that there was no 3V_ON signal at Q302.
Probably due to a problem with the KEY_IC peripheral circuit.
Repair Method
Replace main board.
1-4 Power 4
Phenomenon of problem
Power does not come ON with the AC adapter.
Results of Analysis
Fuse (F302) on main board blown.
Probably due to the use of a non-standard AC adapter.
It is thought that an excessive current [5A] appropriately 200% of the rated value was applied.
Repair Method
Replace the fuse (F302).
1-5 Power 5
Phenomenon of problem
Power does not come on with either the AC adapter or the battery.
Current of 0.15A at DC_IN, and excessive current at POWER_ON so that power is switched OFF.
Results of Analysis
Analysis by the design section revealed a problem (short) with the tantalum condenser (C322) on the main
board.
Repair Method
Replace tantalum condenser (C322).
5
FinePix A310 TROUBLESHOOTING GUIDE
1-6 Power 6
Phenomenon of problem
In both the still and movie modes, power cuts out when the image is about to appear on the LCD.
Results of Analysis
Fuse (F303:-8v/16V line) blown, and problem with power supply IC (IC301)
Possible reasons for damage to the power supply IC (IC301) are as follows.
(1) An external short, or a crack in the solder between the transformer and rectification diodes, in the CCD
voltage output line.
(2) A component in the CCD voltage output line (diode, electrothermal detector resistor) is missing or has
been mounted incorrectly.
(3) Power supply input voltage is between 10V and 12V.
Of the above, (2) is not relevant, and (1) is such that if the problem occurred on the bottom of the component
mounting surface it would be impossible to verify. While improbable, the greatest possibility is (3).
Repair Method
Replace the fuse (F303) on the main board, and the IC (IC301).
1-7 Power 7
Phenomenon of problem
Power does not come ON.
Results of Analysis
Transistor (Q302) on main board not soldered.
This transistor is responsible for 3V_ON switching. As it is unsoldered the 3.3V is not output, and power
therefore does not come ON.
<Main board> <Transistor (Q302)>
Repair Method
Solder transistor (Q302).
6
<Enlarged view of unsoldered Q302>
Loading...