FUJIFILM FinePix A400, FinePix A500 SERVICE MANUAL

DIGITAL CAMERA

FinePix A400

SERVICE MANUAL

US/CA/EU/EG/EE/AS/CH-Model

CAUTION

BECAUSE THIS PRODUCTIS RoHS LEAD-FREE COMPLIANT, USE THE DESIG-

NATED AFTER-SELES PARTS AND THE DESIGNATED LEAD-FREE SOLDER WHEN

PERFORMING REPAIRS. (Refer to page 3 to page 5)

WARNING

THE COMPONENTS IDENTIFIED WITH THE MARK “ ” ON THE SCHEMATIC
DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR SAFETY.

PLEASE REPLACE ONLY WITH THE COMPONENTS SPECIFIED ON THE SCHEMATIC

DIAGRAM AND IN THE PARTS LIST.
IF YOU USE PARTS NOT SPECIFIED, IT MAY RESULT IN A FIRE AND AN

ELECTRICAL SHOCK.

FUJI PHOTO FILM CO., LTD.

Ref.No.:ZM00625-101

Printed in Japan 2006.02

FinePix A400 Service Manual

SAFETY CHECK-OUT

After correcting the original problem, perform the following

safety check before return the product to the customer.

1. Check the area of your repair for unsoldered or poorly

soldered connections. Check the entire board surface

for solder splasher and bridges.

2. Check the interboard wiring to ensure that no wires are

“pinched” or contact high-wattage resistors.

3. Look for unauthorized replacement parts, particularly

transistors, that were installed during a previous repair.

Point them out to the customer and recommend their

replacement.

4. Look for parts which, though functioning, show obvious

signs of deterioration. Point them out to the customer

and recommend their replacement.

5. Check the B + voltage to see it is at the values

specified.

6. Make leakage - current measurements to determine

that exposed parts are acceptably insulated from the

supply circuit before returning the product to the

customer.

7. CAUTION: FOR CONTINUED

PROTECTION AGAINST FIRE

HAZARD, REPLACE ONLY WITH

SAME TYPE 2.5 AMPERES 125V

FUSE.

2.5A 125V

2.5A 125V

8. WARNING:

RISK OF FIRE­REPLACE FUSE
AS MARKED

ATTENTION: AFIN D'ASSURER

UNE PROTECTION

PERMANENTE CONTRE LES

RISQUES D'INCENDIE,

REMPLACER UNIQUEMENT

PAR UN FUSIBLE DE MEME,

TYPE 2.5 AMPERES, 125 VOLTS.

TO REDUCE THE ELECTRIC

SHOCK, BE CAREFUL TO

TOUCH THE PARTS.

WARNING!

HIGH VOLTAGE

2

FinePix A400 Service Manual

RoHS lead-free compliance

Because this product is RoHS lead-free compliant, use the designated after-sales parts and the designated lead-free solder
when performing repairs.

<Background & Overview>

With the exception of parts and materials expressly excluded from the RoHS directive (*1), all the internal connections and
component parts and materials used in this product are lead-free compliant (*2) under the European RoHS directive.

*1: Excluded items (list of the main lead-related items)

• Lead included in glass used in fluorescent tubes, electronic components and cathode-ray tubes

• Lead in high-melting-point solder (i.e. tin-lead solder alloys that contain 85% lead or more)

• Lead in ceramic electronic parts (piezo-electronic devices)

• Mercury contained in fluorescent tubes is also excluded.

*2: Definition of lead-free

A lead content ratio of 0.1 wt% or less in the applicable locations (solder, terminals, electronic components, etc.)

<Reference>
RoHS: The name of a directive issued by the European Parliament aimed at restricting the use of

certain designated hazardous substances included in electrical and electronic equipment.

Designated substances (6): Lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBBs) and

polybrominated diphenyl ether (PBDE)

<Lead-free soldering>

When carrying out repairs, use a designated lead-free solder, bearing in mind the differing work practices for conventional
solder (eutectic) and lead-free solder.



 Differences in the soldering work for lead-free and eutectic solder



When the soldering work practices for eutectic solder and lead-free solder are compared, the main differences are as shown
below. In particular, when lead-free solder is used, the solder tends to be less workable than when eutectic solder is used.
Accordingly, the soldering techniques used must take that into account.

Difference

The solder starts melting later.

1

Poor wetting

2

Solder feed rate is difficult to control.

3

Wetting the insides of through holes is especially

4

difficult.

5

During repairs (or modifications) removing solder
from inside through holes is difficult.

6

There is serious carbonization of the soldering iron.

The surface is not glossy.

7

The initial melting point of lead-free solder is high, so you
have to get used to it.
Move the tip of the soldering iron around to heat the entire
connection to the melting temperature and assist wetting.
Use the solder (wire) diameter and soldering iron that are
best suited to connection being soldered.
First apply solder to the area immediately around the
through hold and then feed the solder into the hole.
Use a suitable wicking wire (with a suitable method and
heating) and a suction tool.
Either put solder onto the soldering iron tip after completing
the work, or turn the iron off frequently.
Learn to recognize the appearance of the surface.

Countermeasure

3

FinePix A400 Service Manual



 Setting temperature during lead-free soldering



• Lead-free solder melting temperature
The melting point of eutectic (Sn-Pb) solder is 183°C, while the melting point of lead-free solder (Sn-Ag-Cu) is 30°C higher
at 220°C.

• Soldering iron tip temperature
The temperature setting for the soldering iron used should be such that the tip of the soldering iron is at the correct
bonding temperature for the connection. This temperature is normally set at around 100°C higher than the melting point of
the solder.
However, the actual temperature should take into account the shape and size of the soldering iron tip, the heat tolerance
of the connection and the workability of that temperature.

• Correct bonding temperature
The correct bonding temperature refers not to the temperature of the heat source, but to the bonding temperature that will
give the best bond strength.



 Precautions when soldering with lead-free solder



• Soldering iron maintenance
Because of the high soldering iron temperature in lead-free soldering, there is rapid carbonization of the flux adhering to
the tip of the soldering iron.
(1) Always cover the tip of the soldering iron with solder when it is not being used.
(2) If the tip is black from carbonization, wipe it gently with a paper towel soaked in alcohol until the solder will wet.

• Uniform heating of the board and components
To ensure that the lead-free solder wets the entire surface of the pattern and the lands despite its poor wetting
characteristics, you must move the tip of the soldering iron over a wide area to raise the temperature of the entire
connection.



 Soldering iron



A soldering iron with a temperature control is best.

4

FinePix A400 Service Manual



 Solder wire (thread)



Use the lead-free solders specified below.
Solder type: Sn96.5Ag3Cu0.5 (Displayed symbol: SnAgCu)
Wire diameter: 0.6, 0.8 or 1.0 mm

Sample:

lead-free

Wire diameter 0.8mm

Solder type (Displayed symbol)
SnAgCu



 Flux



Conventional flux can be used.



 Solder application wires (mesh, wicking wire, etc.)



Conventional application wires can be used.

5

MEMO

FinePix A400 Service Manual

6

FinePix A400 Service Manual

CONTENTS

CONTENTS

1. General ........................................................... 8

1-1. Product specification .............................................. 8

1-2. Explanation of Terms ............................................ 11

1-3. Names of External Components .......................... 12

2. Disassembly ................................................. 13

2-1. Names of internal Components ............................13

2-2. Removing the REAR CASE ASSY .......................14

2-3. Disassembling the REAR CASE ASSY ................ 15

2-4. Removing the MAIN PWB ASSY .......................... 16

2-5. Removing the BATTERY HOLDER ASSY ........... 17

2-6. Removing the SUB PWB ASSY ........................... 18

3. Schematics ................................................... 19

3-1. Cautions ............................................................... 19

3-2. Basic Block Names and Functions .......................19

3-3. Functions of Primary Blocks ................................. 20

3-3-1. Technical Outline .................................... 20

3-4. Block Diagram ...................................................... 21

3-5. Overall connection Diagram ................................. 22

3-6. Circuit Diagrams ...................................................23

3-6-1. CAMERA BLOCK ................................... 23

3-6-2. DCDC BLOCK ........................................ 24

3-6-3. MOTOR BLOCK ..................................... 25

3-6-4. PROCESS BLOCK .................................26

3-6-5. KEY BLOCK ........................................... 27

3-6-6. LCD BLOCK ........................................... 28

3-6-7. CCD FPC BLOCK ................................... 29

3-6-8. VIDEO BLOCK ....................................... 29

3-6-9. MEDIA BLOCK ....................................... 30

3-6-10. STRB BLOCK ......................................... 30

3-7. Mounted Parts Diagrams ...................................... 31

3-7-1. CCD FPC ASSY ..................................... 31

3-7-2. MAIN PWB ASSY ...................................32

3-7-3. SUB PWB ASSY ..................................... 34

4. Adjustments .................................................. 35

4-1. Important point Adjustment when

Replacing Major Parts ..........................................35

4-2. Measuring Instruments Used ............................... 35

4-3. Use Jig list ............................................................ 35

4-4. Calibration method of pattern box ........................ 36

4-5. Adjustment software installation ........................... 37

4-5-1. Various downloading software

decompressions, preservation methods,

and notes ................................................37

4-5-2. Installation of DSC jig driver ................... 38

4-5-3. Adjustment softwareinitiation method ..... 38

4-6. Initial Settings of the Adjustment Software ........... 39

4-7. Starting the Adjustment Software ......................... 42

4-8. [R] : Flash Memory Reset ..................................... 45

4-9. [F4] : CCD Data Input ...........................................47

4-10. [F5] : Camera Adjustment ..................................... 50

4-11. [F6] : AF Adjustment .............................................54

4-12. [F7] : Flash Adjustment ......................................... 57

4-13. [F1] : Battery Voltage Adjustment ......................... 59

4-14. [F11] : Video Adjustment ...................................... 63

4-15. [F8] : Firmware Download .................................... 65

4-16 [F12] : End Setting................................................ 67

5. Inspection ..................................................... 71

5-1. Required Measuring Equipment ...........................71

5-2. Connection of Measuring Equipment ................... 71

5-3. Inspection and Factory Settings ........................... 72

6. Parts List....................................................... 77

6-1. Packing and Accessories ..................................... 77

6-1-1. US-model ................................................ 77

6-1-2. CA-model ................................................ 78

6-1-3. EU-model ................................................ 79

6-1-4. EG-model ................................................ 80

6-1-5. EE-model ................................................81

6-1-6. AS-model ................................................82

6-1-7. AS-model (JP Production) ...................... 83

6-1-8. CH-model ................................................ 84

6-2. Cabi Front Block ...................................................85

6-2-1. US/CA/EE/AS-model .............................. 85

6-2-2. EU/EG-model .......................................... 86

6-2-3. AS-model (JP Production) ...................... 87

6-2-4. CH-model ................................................ 88

6-3. Cabi Rear Block ................................................... 89

6-4. Electrical parts ......................................................90

7. Appendix....................................................... 91

7-1. Function of display for Firmware Version ............ 91

7-2. List of Related Technical Updates Issued ............ 92

7

1. General

FinePix A400 Service Manual

1. General

1-1. Product specification

System

Model Digital camera FinePix A400

Effective pixels 4.1 million pixels

CCD 1/2.5-inch Super CCD HR

Storage media Internal memory (approx. 12 MB) / xD-Picture Card (16/32/64/128/256/512 MB/1 GB)

File format Still image: DCF-compliant

Compressed: Exif ver.2.2 JPEG, DPOF-compatible

*Design rule for Camera File System compliant DPOF compatible

Movie: AVI format, Motion JPEG

Number of recorded pixels Still image: 2304

640

Lens Fujinon 3

F3.3-F5.5

Focal length f=6.4 mm-19.2 mm

(Equivalent to approx. 38 mm-114 mm on a 35 mm camera)

Digital zoom Approx. 3.6

Aperture (Wide-angle) F3.3

Focal range Normal: approx. 60 cm (2.0 ft.) to infinity

Macro: approx. 10 cm (3.9 in.) to 80 cm (2.6 ft.)

Sensitivity AUTO/Equivalent to ISO 100/200/400

Photometry TTL 64-zones metering Multi

Exposure control Program AE

Scene position

Exposure compensation -2 EV to +2 EV in 1/3 EV-step increments (

Shutter speed 2 sec. to 1/1500 sec. (depend on Exposure mode)

Focus Mode: Auto focus

White balance Automatic scene recognition/Preset (Fine, Shade, Fluorescent (Daylight), Fluorescent

Self-timer Approx. 2 sec./10 sec.

Flash type Auto flash

Flash mode Auto, Red-eye Reduction, Forced Flash, Suppressed Flash, Slow Synchro, Red-eye Reduc-

Viewfinder Real image optical approx. 75% coverage

LCD monitor 1.8 inches, Aspect ratio: 4:3; 77,000 pixels low-temperature polysilicon TFT, Approx. 94%

Movie 320

Photography functions Best framing, Frame No. memory

Playback functions Trimming, Automatic playback, Multi-frame playback

Other functions PictBridge, Exif print, Language (English, Francais, Deutsch,

(PORTRAIT), (LANDSCAPE), (SPORT), (NIGHT)

AF system: TTL contrast-type

AF frame selection: AF (CENTER)

(Warm White), Fluorescent (Cool White), Incandescent)

Effective range: (

tion + Slow Synchro

coverage

(10 frames per second)

A series of continuous image can be recorded up to 60 seconds (when setting

240 seconds (when setting

Time difference, Discharging rechargeable batteries

×

optical zoom lens

×

240 pixels/160 × 120 pixels ( / )

×

1728 pixels/2304 × 1536 pixels/1600 × 1200 pixels/1280 × 960 pixels/

×

480 pixels ( / / / / )

×

(3× optical zoom lens is used together: Max. zoom scale: approx. 10.8×)

)

: AUTO): Wide-angle: approx. 60 cm-3.1 m (2.0 ft.-10.2 ft.)

Telephoto: approx. 60 cm-2 m (2.0 ft.-6.6 ft.)

Macro: approx. 30 cm-80 cm (1.0 ft.-2.6 ft.)

). Zoom cannot be used during movie recording.

, Italiano, , ),

) /

8

FinePix A400 Service Manual

1. General

Input/Output Terminal

VIDEO OUT NTSC/PAL-type
(Visual output)

Digital input/output USB

DC input socket AC Power Adapter AC-3VX (sold separately)

Power Supply and Others

Power supply Use one of the following:

• 2

×

AA-size alkaline batteries

• 2

×

AA-size Ni-MH (Nickel-Metal Hydride) batteries (sold separately)

• AC power adapter AC-3VX (sold separately)

Guide to the number of

available frames for

battery operation

According to the CIPA (Camera & Imaging Products Association) standard procedure for

measuring digital still camera battery consumption (extract):

When using alkaline batteries, use the batteries supplied with the camera. You can use

Ni-MH batteries also. The storage media should be xD-Picture Card.

Pictures should be taken at a temperature of +23°C (+73°F), with the LCD monitor turned

on, the optical zoom moved from full wide-angle to full telephoto (or vice-versa) and back

again to its original position every 30 seconds, the flash used at full power every second

shot and the camera turned off and then on again once every 10 shots.

• Note: Because the number of available shots varies depending on the capacity of

alkaline batteries or the level of charge in Ni-MH batteries, the figures shown here

for the number of available shots using batteries are not guaranteed.

The number of available shots will also decline at low temperatures.

Camera dimensions 93.0 mm

(W/H/D) (not including accessories and attachments)

Camera mass (weight) Approx. 126 g/4.4 oz. (not including accessories, batteries and xD-Picture Card)

Weight for photography Approx. 174 g/6.1 oz. (including batteries and xD-Picture Card)

Operating conditions Temperature: 0

80% humidity or less (no condensation)

Accessories included z AA-size Alkaline Batteries (LR6) (2)

z Strap (1)

z Video cable (1) 2.5 mm dia. plug-to-pin plug cable

z USB cable (mini-B) (1)

z CD-ROM (1) Software for FinePix BZ

z Owner’s Manual (1)

Battery Type Number of frames

Alkaline batteries Approx. 100 frames

Ni-MH batteries 2500 mAh Approx. 400 frames

×

60.0 mm × 27.5 mm/3.7 in. × 2.4 in. × 1.1 in.

o

C to +40oC (+32oF to +104oF)

9

1. General

Power Supply and Others

Optional accessories z xD-Picture Card

16MB/32MB/64MB/128MB/256MB/512MB/1GB

z Fujifilm Rechargeable Battery 2HR-3UF

z Fujifilm Battery Charger with Battery BK-NH2 (With Euro type or UK type plug)

z AC Power Adapter AC-3VX

z Soft Case SC-FXA03

z Soft Case SC-FXA04

z Image Memory Card Reader DPC-R1

• Compatible with Windows 98/98 SE, Windows Me, Windows 2000 Professional,

Windows XP or iMac, Mac OS 8.6 to 9.2.2, Mac OS X (10.1.2 to 10.2.2) and

models that support USB as standard.

• Compatible with xD-Picture Card of 16 MB to 512 MB, and SmartMedia of 3.3 V, 4

MB to 128 MB.

z PC Card Adapter DPC-AD

• Compatible with xD-Picture Card of 16 MB to 512 MB, and SmartMedia of 3.3 V, 2

MB to 128 MB.

z CompactFlash Card Adapter DPC-CF

• Windows 95/98/98 SE/Me/2000 Professional/XP

• Mac OS 8.6 to 9.2/X (10.1.2 to 10.1.5)

FinePix A400 Service Manual

Standard number of available frames/recording time per xD-Picture Card / internal memor y

The number of available
that the divergence between standard number of
xD-Picture Cards with higher capacities.

Quality setting

Number of recorded pixels

Image data size

Internal memory (approx. 12 MB)

16 MB

32 MB

64 MB

128 MB

256 MB

512 MB

1 GB

, recording time or file size varies slightly depending on the subjects photographed. Note also

frames

frames

F

2304

2.0 MB

5

7

15

32

64

129

259

1728

980 KB

11

15

31

64

128

257

515

N

2304 1536 1280 960

880 KB

13 25 93

17

35

72

144

290

580

519 1031 1162 2205

and the actual number of

1600 1200

630 KB

460 KB

640 480 320 240 160 120

130 KB

19

25

50

101

204

409

818

33

68

137

275

550

1101

1639 7995

12

247

497

997

1997

3993

frames

2

102.1 min. 313.0 min.

is greater for

(10 fps) (10 fps)

71 sec. 220 sec.

94 sec.

189 sec.

6.3 min.

12.7 min.

25.5 min.

51.0 min.

288 sec.

9.7 min.

19.4 min.

39.0 min.

78.1 min.

156.3 min.

10

FinePix A400 Service Manual

1. General

1-2. Explanation of Terms

Deactivated batteries: Leaving an Ni-MH battery unused in storage for a long period may cause a rise in the level

of substances that inhibit current flow inside the battery and result in a dormant battery.

A battery in this state is referred to as deactivated.

Because current flow is inhibited in a deactivated Ni-MH battery, the battery’s original

level of performance cannot be achieved.

EV: A number denotes Exposure Value. The EV is determined by the brightness of the subject

and sensitivity (speed) of the film or CCD. The number is larger for bright subjects and

smaller for dark subjects. As the brightness of the subject changes, a digital camera

maintains the amount of light hitting the CCD at a constant level by adjusting the aperture

and shutter speed.

When the amount of light striking the CCD doubles, the EV increases by 1. Likewise, when

the light is halved, the EV decreases by 1.

Frame rate (fps): The frame rate refers to the number of images (frames) that are photographed or played

back per second. For example, when 10 frames are continuously photographed in a 1-

second interval, the frame rate is expressed as 10 fps.

For reference, TV images are displayed at 30 fps (NTSC).

JPEG: Joint Photographic Experts Group

A file format used for compressing and saving color images. The higher the compression

rate, the greater the loss of quality in the decompressed (restored) image.

Memory effect: If an Ni-MH battery is repeatedly charged without first being fully discharged, its perfor-

mance may drop below its original level. This is referred to as the “memory effect”.

Motion JPEG: A type of AVI (Audio Video Interleave) file format that handles images and sound as a

single file. Images in the file are recorded in JPEG format. Motion JPEG can be played

back by QuickTime 3.0 or later.

Smear: A phenomenon specific to CCDs whereby white streaks appear on the image when there

is a very strong light source, such as the sun or reflected sunlight, in the photography

screen.

White Balance: Whatever the kind of the light, the human eye adapts to it so that a white object still looks

white. On the other hand, devices such as digital cameras see a white subject as white by

first adjusting the color balance to suit the color of the ambient light around the subject.

This adjustment is called matching the white balance.

Exif Print: Exif Print Format is a newly revised digital camera file format that contains a variety of

shooting information for optimal printing.

11

1. General

1-3. Names of External Components

FinePix A400 Service Manual

Shutter button

Self-timer lamp

Lens (lens cover)

Playback button

Viewfinder

Viewfinder lamp

LCD monitor

Tripod mount

MENU
/OK

DISP /

BACK

POWER button

Flash

Viewfinder window

VIDEO OUT

(Video output) socket

USB socket (mini-B)

DC IN 3V (power input)

socket

/ Macro button

/ Flash button

/ Tele zoom

switch

/ Wide zoom

switch

Strap mount

xD-Picture Card slot

Battery compartment

MENU/OK button

DISP (display)/

BACK button

Battery cover

12

FinePix A400 Service Manual

2. Disassembly

2-1. Names of internal Components

REAR CASE

FRAME

2. Disassembly

LCD

FLASH CASE ASSY

LEAD E.CAP

BATTERY HOLDER ASSY

SUB PWB ASSY

BUZZER

MAIN PWB ASSY

F CASE ASSY

LENS CONST

13

2. Disassembly

2-2. Removing the REAR CASE ASSY

FinePix A400 Service Manual

(1) Remove the 4 special screws (M1.7 x 5.0).

(2) Remove the 2 screws (M1.7 x 3.0).

(3) Lift up the REAR CASE in the direction of the arrow.

(4) Remove the REAR CASE ASSY in the direction of the

arrow.

(5) Peel off the FLASH SHEET and discharge the main

capacitor.

Take care not to touch the SUB PWB ASSY before
discharging the capacitor.

2

4

3

2

1

5

1

(6) Unlock the CN501 connector.

(7) Remove the LCD in the direction of the arrow and

remove the REAR CASE ASSY.

[Assembly]

Assemble by performing the disassembly procedure in
reverse.

[Notes]

(1) Fit the VIDEO OUT side first and then fit the strap

side.

(2) Run the wires so that they do not pinch the LCD.

6

7

2

1

14

FinePix A400 Service Manual

2

1

5

4

3

2-3. Disassembling the REAR CASE ASSY

(1) Remove the 6 screws (M1.4 x 3.0).

(2) Remove the FRAME in the direction of the arrow.

2. Disassembly

(3) Remove the LCD in the direction of the arrow.

(4) Remove the POWER BUTTON in the direction of the

arrow.

(5) Remove the RELEASE HOLDER in the direction of

the arrow.

[Assembly]

Assemble by performing the disassembly procedure in
reverse.

15

2. Disassembly

2-4. Removing the MAIN PWB ASSY

FinePix A400 Service Manual

(1) Unlock the 3 connectors.

(2) Detach the FPC (MOTOR) from the connector in the

direction of the arrow.

(3) Detach the FPC (MAIN-SUB) from the connector in

the direction of the arrow.

(4) Detach the FPC (CCD) from the connector in the

direction of the arrow.

(5) Remove the soldering at 2 points.

(6) Remove the soldering at 2 points and disconnect the

lead wires.

(7) Remove the 3 screws (M1.7 x 10).

(8) Remove the screw (M1.7 x 4.0).

(9) Open the BATTERY COVER.

(10) Remove the MAIN PWB ASSY in the direction of the

arrow.

2

1

1

4

7

1

10

3

Black

6

5

Red

8

[Assembly]

Assemble by performing the disassembly procedure in
reverse.

[Notes]

To avoid damaging SW808, disassemble and assemble
with the BATTERY COVER open.

SW808

9

16

FinePix A400 Service Manual

2-5. Removing the BATTERY HOLDER ASSY

2. Disassembly

(1) Remove the LENS CONST in the direction of the

arrow.

(2) Remove the F INNER PSP in the direction of the

arrow.

(3) Remove the BUZZER in the direction of the arrow.

(4) Remove the 2 screws (M1.7 x 4.0).

(5) Remove the BATTERY HOLDER ASSY in the

direction of the arrow.

1

3

4

2

[Assembly]

Assemble by performing the disassembly procedure in
reverse.

5

17

2. Disassembly

2-6. Removing the SUB PWB ASSY

FinePix A400 Service Manual

(1) Remove the 2 screws (M1.7 x 4.0).

(2) Remove the FLASH CONST in the direction of the

arrow.

(3) Remove the FLASH SHEET.

(4) Remove the soldering at 4 points.

(5) Remove the main capacitor in the direction of the

arrow.

(6) Remove the soldering for T952.

(7) Remove the screw (M1.7 x 4.0).

(8) Remove the SUB PWB ASSY in the direction of the

arrow.

1

2

3

8

4

7

[Assembly]

Assemble by performing the disassembly procedure in
reverse.

Note the polarity]

[

Install the main capacitor so that the negative (-) pole is
towards the front of the camera.

6

5

18

FinePix A400 Service Manual

3. Schematics

3. Schematics

3-1. Cautions

<Cautions when replacing parts>

• Do not reuse removed parts. Always use new parts.

• Note that the negative side of tantalum condensers is readily damaged by heat.

• Except for chemical condensers and tantalum condensers, voltage is not displayed on condensers with a voltage
resistance of 50V or less.

• Resistors not marked are 1/16W chip resistors.

•KΩ = 1000Ω, MΩ = 1000KΩ

• B characteristics of variable resistors and semi-fixed resistors are not displayed.

3-2. Basic Block Names and Functions

Part name Block name Function

LENS CONST CCD BLOCK CCD output
MAIN PWB ASSY CAMERA BLOCK CCD output A/D conversion (IC104)

MOTOR BLOCK Shutter/iris/AF/zoom drive (IC701)
VIDEO BLOCK Video IN/OUT (IC401)
KEY BLOCK Key switch
STRB BLOCK Flash charge
MEDIA BLOCK Media data IN/OUT, Shutter SW
LCD BLOCK LCD output CN, Back light control
DCDC BLOCK Power supply generation (IC313), Flash charge control,

Power control

PROCESS BLOCK Image signal processing, USB communications,

system control (IC204)

SUB PWB ASSY STRB BLOCK Flash charge

19

3. Schematics

FinePix A400 Service Manual

3-3. Functions of Primary Blocks

3-3-1. Technical Outline

 Equipped with a 1/2.5-inch Super CCD HR (with 4.1 effective megapixels) and a Fujinon 3x optical zoom lens.
 Features a new image signal processing LSI chip, called the XCS2R_IC (IC204, CSP_IC), built into the MAIN PWB

ASSY. This CPU incorporates the standard peripheral I/O functions as well as the peripheral functions required for still
image processing into a single chip. Standard peripheral I/O consists of the interrupt controller, DMA controller, clock
controller, SDRAM controller, block selection controller, serial I/O, multifunction timer, monitoring timer, programmable I/O
ports, USB 2.0 (Full Speed), microprocessor ADC, microprocessor DAC, image processing circuit, JPEG compression/
expansion circuit, display control circuit, still image processing and card interface circuit.

 In the white balance procedure, an algorithm has been installed that provides an estimation of the light source used for

shooting based on the brightness and light source color detected when the shot was taken, and a white balance (WB)
compensation function based on that estimation. The new algorithm is designed to prevent “hunting” due to field-of-view
slippage by providing more accurate brightness and color detection, and to allow the installation of a powerful algorithm
for distinguishing between the light source and the original subject colors.

 Flash brightness is adjusted using the CCD-TTL method in which the flash brightness is calculated from the CCD

feedback data generated by the pre-flash.

Explanation of the imaging circuit functions

 Analog video signals output from the CCD (1/2.5-inch with 4.1 effective megapixels) undergo pseudo-color correction

processing, adaptive interpolation processing, amplification and signal mixing in the BCS-R_IC (IC104; CSP_IC). The
converted digital signals are then sent to the single-chip image signal processing LSI chip, known as XCS2R_IC (IC204,

CSP_IC).
 Input data from the CCD
* The 10-bit digital image data (corresponding to 1H) sent from the imaging circuit (BCS-R) is sent to XCS2R_IC, buffered

in the chip’s IBFC and replaced by 16-bit (96 MHz) data. The replaced 16-bit (96 MHz) image data is then stored in the

XCS2R_IC [SDRAM] via the XCS2R_IC [I/O BUFFER]. The image data for each frame is temporarily stored in the

XCS2R_IC [SDRAM].
* At the same time, the AE for [AUTO] is calculated using the 10-bit image data input to XCS2R_IC and the data required

for AE, AWB and AF is sent to the XCS2R_IC [SDRAM]. In the XCS2R_IC [SDRAM], the data is sent serially to AFE_CS

to obtain the correct AE, AWB and AF.
 Recording onto an xD-Picture card

The image data stored in SDRAM is converted to 16-bit (96-MHz) data by [IBFC] in XCS2R_IC one line at a time and

then sent to [YC PRO]. In [IBFC], the 32-bit Y and C signals are each converted to 8-bit Y, Y, Cb and Cr signals and sent

to the XCS2R_IC [SDRAM]. The image data stored in the XCS2R_IC [SDRAM] is compressed using [JPEG] in

XCS2R_IC and then recorded sequentially onto the xD-Picture card via [MEDIA] in XCS2R_IC.
 Playing back images from an xD-Picture card

The compressed image data from the xD-Picture card is sent to XCS2R_IC and stored in the XCS2R_IC [SDRAM] via

[MEDIA]. The compressed image data stored in the XCS2R_IC [SDRAM] is expanded using [JPEG] and again stored in

the XCS2R_IC [SDRAM]. The expanded image data is sent to [YC PRO] via [IBFC]. In [YC PRO], gain control and

aperture processing is applied for the brightness signals and color difference signals, after which the data is again stored

in the XCS2R_IC [SDRAM]. The image data is then displayed via [ENCD] and [D/A].
 In movie shooting mode

The 10-bit digital image data output from the imaging unit is converted to 8-bit Y and C signals by the XCS2R_IC [YC

PRO] and sent to the XCS2R_IC [SDRAM]. The image data is compressed using [JPEG] in XCS2R_IC and again stored

in the XCS2R_IC [SDRAM]. The compressed data is then recorded sequentially onto the xD-Picture card via [MEDIA] in

XCS2R_IC.
 The imaging system adjustment data is stored in FLASH_ROM (IC201).

Explanation of the LCD controller functions

 The R, G and B signals processed in the XCS2R_IC image signal processor are output to the LCD panel via [LCD

CONST].

LCD Unit

 The LCD monitor (1.8-inch 77,000 pixels) used in the camera uses a low-temperature polysilicon TFT color LCD screen.

Power Supply Section

 Power supply circuits constructed in the core of the HPS_IC (IC313) create the following power supplies, which are

supplied to each block.

CAM3.3V [IC104 (BCS-R), IC103 (V_Drv)]

15V [IC103 (V_Drv), IC11 (CCD)]

5V [IC103 (V_Drv)]

-8V [IC103 (V_Drv), IC11 (CCD)]

3.3V_SYS [IC701 (Motor_Drv), IC204 (XCS2R)]

3.3V_ RUN [IC701 (Motor_Drv)]

1.5V_RUN [IC204 (XCS2R)]

8.5V_LCD [LCD (CN501)]

3VA_OUT [LCD (CN501), IC401 (Video Driver)]

VUNREG [STRB (CN901)]

20

FinePix A400 Service Manual

(

)

y

3. Schematics

3-4. Block Diagram

WEN

MOT_ZPLS

SUB
PWB
ASSY

BATT.

*R6 x 2

LENS Barrier

MOT_ZHP

MOT_FHP

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KCAB/PSID

21

3. Schematics

3-5. Overall connection Diagram

FinePix A400 Service Manual

22

FinePix A400 Service Manual

3. Schematics

3-6. Circuit Diagrams

3-6-1. CAMERA BLOCK

23

3. Schematics

3-6-2. DCDC BLOCK

FinePix A400 Service Manual

24

FinePix A400 Service Manual

3. Schematics

3-6-3. MOTOR BLOCK

25

3. Schematics

3-6-4. PROCESS BLOCK

FinePix A400 Service Manual

26

FinePix A400 Service Manual

3-6-5. KEY BLOCK

3. Schematics

27

3. Schematics

3-6-6. LCD BLOCK

FinePix A400 Service Manual

28