Sony DXC-S500 User manual

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DXC-S500
SERVICE MANUAL
1st Edition

DXC-S500 (E)
!WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
!WARNUNG
Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben
Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung
dazu besitzen.
!AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.
Pour toute réparation faire appel à une personne compétente uniquement.

DXC-S500 (E)
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according to the
manufacturer’s instructions.
Vorsicht!
Explosionsgefahr bei unsachgemäßem Austausch
der Batterie.
Ersatz nur durch denselben oder einen vom
Hersteller empfohlenen ähnlichen Typ. Entsorgung
gebrauchter Batterien nach Angaben des
Herstellers.
ATTENTION
Il y a danger d’explosion s’il y a remplacement
incorrect de la batterie.
Remplacer uniquement avec une batterie du même
type ou d’un type équivalent recommandépar le
constructeur.
Mettre au rebut les batteries usagées conformément
aux instructions du fabricant.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig
håndtering.
Udskiftning måkun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
ADVARSEL
Lithiumbatteri - Eksplosjonsfare.
Ved utskifting benyttes kun batteri som
anbefalt av apparatfabrikanten.
Brukt batteri returneres
apparatleverandøren.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en likvärdig typ
som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande
föreskrifter.
VAROITUS
Paristo voi räjähtää jos se on virheellisesti
asennettu.
Vaihda paristo ainoastaan laitevalmistajan
suosittelemaan tyyppiin.
Hävitäkäytetty paristo valmistajan ohjeiden
mukaisesti.
1 (P)

DXC-S500 (E)
For the customers in the Netherlands
Voor de klanten in Nederland
Hoe u de batterijen moet verwijderen, leest u in de tekst
van deze handleiding.
Gooi de batterij niet weg maar lever deze in als klein
chemisch afval (KCA).
Für Kunden in Deutschland
Entsorgungshinweis: Bitte werfen Sie nur entladene
Batterien in die Sammelboxen beim Handel oder den
Kommunen. Entladen sind Batterien in der Regel dann,
wenn das Gerät abschaltet und signalisiert “Batterie
leer”oder nach längerer Gebrauchsdauer der Batterien
“nicht mehr einwandfrei funktioniert”. Um
sicherzugehen, kleben Sie die Batteriepole z.B. mit
einem Klebestreifen ab oder geben Sie die Batterien
einzeln in einen Plastikbeutel.
2 (P)

1
DXC-S500 (E)
Table of Contents
Manual Structure
Purpose of this manual .............................................................................................. 5
Related manuals......................................................................................................... 5
Trademarks ................................................................................................................ 5
1. Service Overview
1-1. Board Location............................................................................................1-1
1-1-1. CHU Block .................................................................................1-1
1-1-2. CCU Block .................................................................................1-1
1-2. System Connection Diagram.......................................................................1-1
1-2-1. Connecting to Video Equipment With Composite Video Input
Connectors..................................................................................1-1
1-2-2. Connecting to Video Equipment With Composite S-Video
Input Connector..........................................................................1-2
1-2-3. Connecting to a Computer .........................................................1-2
1-3. Removal and Installation of Cabinet...........................................................1-3
1-3-1. CHU Block .................................................................................1-3
1-3-2. CCU Block .................................................................................1-3
1-3-3. Gasket Plate................................................................................1-4
1-4. Removal and Installation of Board .............................................................1-5
1-4-1. CA-46 Board/PS-613 Board ......................................................1-5
1-4-2. PA-267 Board.............................................................................1-5
1-4-3. PD-106 Board.............................................................................1-6
1-4-4. SW-1082 Board..........................................................................1-6
1-4-5. LED-388 Board/PSW-77 Board ................................................1-7
1-4-6. SY-301 Board.............................................................................1-7
1-4-7. IF-847 Board ..............................................................................1-8
1-4-8. CN-2272 Board ..........................................................................1-8
1-4-9. FM-84 Board ..............................................................................1-9
1-4-10. Switching Regulator.................................................................1-10
1-5. DC Fan ......................................................................................................1-10
1-6. Removal and Installation of LCD Panel ...................................................1-11
1-7. Replacement of Lithium Battery ...............................................................1-11
1-8. Input and Output Signals of Connectors ...................................................1-12
1-9. TWAIN Driver Software Installation Procedures.....................................1-13

2DXC-S500 (E)
2. Adjustment of After Replacement Board
2-1. CCD (Camera Front Assembly)..................................................................2-1
2-2. PA-267 Board..............................................................................................2-1
2-3. CA-46 Board ...............................................................................................2-1
2-4. SY-301 Board..............................................................................................2-1
2-4-1. Writing of Initial Data in IC523 .................................................2-2
2-5. FM-84 Board ...............................................................................................2-2
2-6. PD-106 Board..............................................................................................2-2
2-7. Boards Requiring No Adjustment after Replacement.................................2-2
3. Updating the CPU Program
3-1. Confirmation of CPU Program Version......................................................3-1
3-2. Updating ......................................................................................................3-1
4. Troubleshooting
4-1. A Color-bar Signal is Output from the VIDEO OUT Connector.
(CHU LINK CHECK ERROR is Displayed on the LCD Screen.).............4-1
4-2. The Power Indicator does not Light in Amber Even If the
Power Switch on the Rear Panel is Set to ON. ...........................................4-1
4-3. The Power of CCU is not Turned on. (I/O Power Switch Operation) ........4-2
4-4. No Camera Live Image is Displayed. (VBS and S-Video Signals
are not Input to the TV Monitor.)................................................................4-2
4-5. No Camera Image is Output from CHU .....................................................4-3
4-6. No Menu Screen is Displayed.....................................................................4-3
4-7. No Display Appears on the LCD Monitor. .................................................4-3
4-8. A Remarkable CCD Defect Exists (in case of a long-time shutter)............4-4
4-9. No Data can be Recorded in the PC Card even if the REC Button
is pressed. (PC card)....................................................................................4-4
4-10. No Image is Played Back Even If the PLAY Button is Pressed. ................4-4
4-11. The Captured Image is not Displayed in Proper Brightness. ......................4-4
4-12. The Control Panel Dial does not Function..................................................4-5
4-13. IEEE1394 cannot Transfer During Communication...................................4-5
4-14. A Live Image is not Optimally Displayed on the TWAIN Software
Screen of PC or not Transferred..................................................................4-6

3
DXC-S500 (E)
5. Electrical Alignment
5-1. Preparation ..................................................................................................5-1
5-1-1. Adjustment Fixture and Measurement Equipment ....................5-1
5-1-2. Buttons on Front and Rear Panels ..............................................5-2
5-2. Test (Adjustment) Mode .............................................................................5-2
5-3. Electrical Adjustment (CHU)......................................................................5-3
5-3-1. Preparation Before Adjustment ..................................................5-3
5-3-2. White Balance Adjustment ........................................................5-4
5-3-3. Standard Sensitivity Adjustment ................................................5-4
5-3-4. SHP Phase Adjustment ..............................................................5-4
5-3-5. Reading the CCD Defect Data ...................................................5-4
5-3-6. Confirmation of White Balance Lead-in Operation ...................5-5
5-3-7. Confirmation of CCD Cooling Operation ..................................5-5
5-4. Electrical Adjustment (CCU) ......................................................................5-5
5-4-1. Connection .................................................................................5-5
5-4-2. 3.5-inch LCD Adjustment ..........................................................5-5
5-4-3. CCU External Video Signal Adjustment ...................................5-8
6. Circuit Description
6-1. PS-613 Board ..............................................................................................6-1
6-1-1. Switching regulator functions ....................................................6-1
6-2. IF-874 Board ...............................................................................................6-2
6-3. PD-106 Board..............................................................................................6-2
6-4. SW-1082 Board...........................................................................................6-3
6-5. FM-84 Board ...............................................................................................6-4
6-6. SY-301 Board..............................................................................................6-6
6-7. PA-267 Board..............................................................................................6-9
6-8. CA-46 Board ...............................................................................................6-9
7. Semiconductor Pin Assignments
8. Spare Parts
8-1. Notes on Repair Parts..................................................................................8-1
8-2. Exploded Views ..........................................................................................8-2
8-3. Electrical Parts List ...................................................................................8-10
8-4. Packing Materials & Supplied Accessories ..............................................8-29

4DXC-S500 (E)
9. Block Diagrams
9-1. Overall Block Diagram (CHU Block).........................................................9-1
CHU-Block ...............................................................................................9-1
9-2. Overall Block Diagram (CCU Block).........................................................9-2
CCU Block................................................................................................9-2
10. Schematic Diagrams
CA-46 ..................................................................................................10-1
CN-2272..................................................................................................10-2
FM-84 ..................................................................................................10-3
IF-874 ..................................................................................................10-9
LED-388 ...............................................................................................10-10
PA-267 ................................................................................................10-11
PD-106 ................................................................................................10-12
PS-613 ................................................................................................10-13
PSW-77 ................................................................................................10-14
SW-1082 ...............................................................................................10-15
SY-301 ................................................................................................10-16
Frame ................................................................................................10-26
11. Board Layouts
CA-46 ..................................................................................................11-1
CN-2272..................................................................................................11-3
FM-84 ..................................................................................................11-4
IF-874 ..................................................................................................11-6
LED-388 .................................................................................................11-7
PA-267 ..................................................................................................11-7
PD-106 ..................................................................................................11-8
PS-613 ..................................................................................................11-9
PSW-77 ..................................................................................................11-9
SW-1082 ...............................................................................................11-10
SY-301 ................................................................................................11-14

5
DXC-S500 (E)
Manual Structure
Purpose of this manual This manual is the Service Manual of the Color Digital Camera DXC-S500.
This manual contains the service overview, adjustment of after replacement board,
updating the CPU program, troubleshooting, electrical alignments, circuit
description, spare parts, semiconductor pin assignments, block diagrams, schematic
diagrams and board layouts.
Related manuals In addition to this Service Manual the following manual is provided.
..
..
.Operating Instructions (Supplied with DXC-S500)
Part No.: 3-620-250-12
This manual describes the information required for the actual management and
operation of this unit.
..
..
.User’s Guide (Supplied with DXC-S500)
Part No.: 3-620-251-02
This manual describes the setting up and operating procedures of the TWAIN
Driver Software supplied with the DXC-S500.
..
..
.Additional information on TWAIN driver software (Supplied with DXC-
S500)
Part No.: 3-704-968-11
Use the Operating Instructions supplied with the DXC-S500 together with the
User’s Guide.
..
..
.“Semiconductor Pin Assignments” CD-ROM (Available on request)
This “Semiconductor Pin Assignments” CD-ROM allows you to search for
semiconductors used in B&P Company equipment.
Semiconductors that cannot be searched for on this CD-ROM are listed in the
service manual for the corresponding unit. The service manual contains a com-
plete list of all semiconductors and their ID Nos., and thus should be used together
with the CD-ROM.
Part number: 9-968-546-XX
Trademarks Trademarks and registered trademarks used in this manual are follows.
.Windows are registered trademarks of Microsoft Corporation.
.Mac OS is registered trademarks of Apple Computer, Inc.,

1-1
DXC-S500 (E)
Section 1
Service Overview
1-1. Board Location
1-1-1. CHU Block
1-1-2. CCU Block
1-2. System Connection Diagram
1-2-1. Connecting to Video Equipment With
Composite Video Input Connectors
PA-267 board PS-613 board
CA-46 board
Switching
regulator PD-106 board SY-301 board
SW-1082 board
CN-2272 board
PSW-77 board
FM-84 board
IF-874 board
LED-388 board
VIDEO
OUTPUT
CHU (rear) Video monitor, VTR, etc.
Composite video
input connector
Camera cable
(supplied) 75 Zcoaxial cable
CCU (rear)
CAMERA
Power cord
CAMERA
IEEE
1394
FLASH
VIDEO S VIDEO
ONOFF
~ AC IN
TRIG IN
NTSC
PAL
FS-20FS-30
REMOTEOUTPUT

1-2 DXC-S500 (E)
1-2-2. Connecting to Video Equipment With
Composite S-Video Input Connector 1-2-3. Connecting to a Computer
n
Be sure to turn on the power of the camera control unit (the
power indicator (D201/PSW-77 board) on the control
panel of the camera control unit lights in green) before
connecting the camera to the computer with the IEEE1394
cable.
CAMERA
IEEE
1394
FLASH
VIDEO S VIDEO
ONOFF
~ AC IN
TRIG IN
NTSC
PAL
FS-20FS-30 REMOTEOUTPUT
S-VIDEO
OUTPUT
CHU (rear) Video monitor, VTR, etc.
S-Video input
connector
Camera cable
(supplied)
S-video connecting
cable
CCU (rear)
CAMERA
Power cord
VIDEO
OUTPUT
CHU (rear) Video monitor, VTR, etc.
Camera cable
(supplied)
75 Zcoaxial cable
CCU (rear)
CAMERA
Power cord
Video input
connector
CAMERA
IEEE
1394
FLASH
VIDEO S VIDEO
ONOFF
~ AC IN
TRIG IN
NTSC
PAL
FS-20FS-30
REMOTEOUTPUT
IEEE1394
OUTPUT
IEEE1394 cable
(not supplied)
IEEE1394 connector
Computer

1-3
DXC-S500 (E)
1-3. Removal and Installation of Cabinet
1-3-1. CHU Block
1. Turn the lens cap in the direction indicated by the
arrow, then remove the lens cap.
2. Remove the four screws, then remove the lower case.
3. Remove the three screws, then remove the front panel
assembly.
4. Disconnect one flexible flat cable from the connector
(CN101) on the CA-46 board.
5. Remove the harness guard.
6. Attach the front panel assembly and lower case in the
reverse order of steps 1 to 5.
1-3-2. CCU Block
1. Remove the four screws, then remove the upper case
assembly.
2. Disconnect the two flexible flat cables from the
connectors (CN3 and CN5) on the SW-1082 board and
disconnect one harness from the connector (CN107)
on the CN-2272 board.
PM 2x5
CN101
Harness guard
Flexible flat cable
Lens cap
Front panel assembly
PM 2x5
PM 2x5
CA-46 board
Lower case
B 2.6x4
B 2.6x4
Upper case assembly
Flexible
flat cables
CN5
CN3
CN107
SW-1082 board
CN-2272 boardHarness

1-4 DXC-S500 (E)
3. Remove the PD-106 board. (Refer to Section 1-4-3.)
4. Remove the LCD panel. (Refer to Section 1-6.)
5. Remove the SW-1082 board. (Refer to Section 1-4-4.)
6. Remove the LED-388 board and PSW-77 board.
(Refer to Section 1-4-5.)
7. Remove the five screws, then remove the bracket.
8. Remove the two screws, then remove the two
mounting brackets.
9. Remove the power button, AE button assembly, REC
button assembly, PLAY button and CNTL button from
the upper case assembly.
10. Attach the upper case assembly in the reverse order of
steps 1 to 9.
1-3-3. Gasket Plate
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Remove the two screws (B 2.6x4), one screw (BTP
2.6x8) and gasket plate (1).
3. Remove the two screws (B 2.6x4), two screws (BTP
2.6x8), gasket plate (3) and gasket plate (4).
4. Remove the two screws (B 2.6x4) and gasket plate
(2).
5. Attach the gasket plates in the reverse order of steps 1
to 4.
Bracket
Power button
Mounting
bracket
AE button assembly
Upper case assembly
REC button
assembly
PLAY button
CNTL button
BTP
2.6x6
BTP
2.6x6BTP
2.6x6
B 2.6x4
BTP 2.6x8
Gasket
plate (1)
BTP
2.6x8
BTP
2.6x8
B 2.6x4
B 2.6x4
B 2.6x4
B 2.6x4Gasket
plate (2)
Gasket
plate (3)
Gasket
plate (4)

1-5
DXC-S500 (E)
1-4. Removal and Installation of Board
1-4-1. CA-46 Board/PS-613 Board
n
When replacing the CA-46 board and PS-613 board, also
replace the heat resisting rubbers attached to the board.
1. Remove the lower case and front panel assembly.
(Refer to Section 1-3-1.)
2. Remove the two screws and disconnect one harness
from the connector (CN102) on the CA-46 board, then
remove the CA-46 board.
3. Remove one heat resisting rubber (CA1) and two heat
resisting rubbers (CA2) from the CA-46 board.
4. Remove the two screws and disconnect the two
harnesses from the connectors (CN201 and CN202) on
the PS-613 board, then remove the PS-613 board.
5. Remove one heat resisting rubber (DD) from the PS-
613 board.
6. Install the CA-46 board and PS-613 board in the
reverse order of steps 1 to 5.
1-4-2. PA-267 Board
1. Remove the lower case and front panel assembly.
(Refer to Section 1-3-1.)
2. Remove the two screws, then remove the seal rubber
retainer (FFC).
3. Raise the connector (CN1) on the PA-267 board in the
direction indicated by the arrow A to release the lock,
then remove the flexible flat cable and seal rubber
(FFC) in the direction indicated by the arrow B.
4. Remove the two screws and solders, then remove the
PA-267 board.
5. Install the PA-267 board in the reverse order of steps 1
to 4.
n
When attaching the flexible flat cable, be sure that the blue
belt is on the correct side.
PM 2x3
PM 2x3
Heat resisting
rubber (DD)
Harness
Harness
Heat resisting
rubber (CA1)
Heat resisting
rubber (CA2)
CA-46 board
PS-613 board
CN102
CN202
CN201
Seal rubber
(FFC)
Blue belt
Blue belt
Seal rubber
retainer (FFC)
CN1
Flexible flat cable
PM 2x3
PM 2x3
PA-267 board
Solders
A
B

1-6 DXC-S500 (E)
1-4-3. PD-106 Board
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Disconnect one harness from the connector (CN5) and
three flexible flat cables from the connectors (CN1,
CN2 and CN3) on the PD-106 board.
3. Remove the two screws (B 2.6x4) and two screws
(BTP 2.6x6), then remove the PD-106 board.
4. Install the PD-106 board in the reverse order of steps 1
to 3.
1-4-4. SW-1082 Board
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Disconnect the three flexible flat cables from the
connectors (CN1, CN2 and CN4) on the SW-1082
board.
3. Remove one screw (BTP 2.6x8), then remove the
wiring clip.
4. Remove the eight screws (B 2.6x4), then remove the
SW-1082 board.
5. Remove the four volume knobs from the SW-1082
board.
6. Install the SW-1082 board in the reverse order of steps
1 to 5.
BTP 2.6x6
B 2.6x4
Upper case
assembl
y
Harness CN5
CN1 CN3
CN2
PD-106
board
Flexible flat cables
Flexible flat cable
B 2.6x4
BTP
2.6x8
B 2.6x4
CN4
CN2
CN1
SW-1082
board
Flexible flat cable
Flexible
flat cable
Wirin
g
clip
Volume
knobs
Flexible
flat cable

1-7
DXC-S500 (E)
1-4-5. LED-388 Board/PSW-77 Board
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Disconnect one flexible flat cable from the connector
(CN301) on the LED-388 board.
3. Remove one screw (BTP 2.6x6), then remove the
LED-388 board.
4. Disconnect one flexible flat cable from the connector
(CN201) on the PSW-77 board.
5. Remove one screw (BTP 2.6x6) and one screw (B
2.6x4), then remove the PSW-77 board.
6. Install the LED-388 board and PSW-77 board in the
reverse order of steps 1 to 5.
1-4-6. SY-301 Board
n
When replacing the SY-301 board, also replace the heat
transfer rubber (3) attached to the board.
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Disconnect the two harnesses from the connectors
(CN301 and CN501) and four flexible flat cables from
the connectors (CN802, CN803, CN804 and CN805)
on the SY-301 board.
3. Remove the four screws, then remove the SY shield
(M).
4. Remove the SY-301 board in the direction indicated
by the arrow.
5. Remove the heat transfer rubber (3) from the SY-301
board.
6. Install the SY-301 board in the reverse order of steps 1
to 5.
BTP 2.6x6
BTP
2.6x6
B 2.6x4
CN201
CN301
Flexible
flat cables
PSW-77
board
LED-388
board
CN805
CN802
CN803
CN804 CN301
CN501
Harnesses
SY shield (M)
Flexible
flat cables
SY-301 board
Heat
transfer
rubber (3)
B 2.6x4

1-8 DXC-S500 (E)
1-4-7. IF-847 Board
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Remove the SY-301 board. (Refer to Section 1-4-6.)
3. Remove the gasket plate (1). (Refer to Section 1-3-3.)
4. Remove the three screws (B 2.6x4), then remove the
card cover assembly and IF-847 board in the direction
indicated by the arrow.
5. Disconnect the two flexible flat cables from the
connectors (CN301 and CN302) on the IF-847 board.
6. Install the IF-847 board in the reverse order of steps 1
to 5.
1-4-8. CN-2272 Board
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Remove the SY-301 board. (Refer to Section 1-4-6.)
3. Remove the gasket plates (2), (3) and (4). (Refer to
Section 1-3-3.)
4. Disconnect the two flexible flat cables from the
connectors (CN101 and CN102) on the CN-2272
board.
5. Remove the three screws, then remove the connector
panel assembly in the direction indicated by the arrow.
B 2.6x4
B 2.6x4
CN302 CN301
IF-847 board
Flexible
flat cables
Card cover
B 2.6x4
B 2.6x4
CN102
CN101
Flexible
flat cables
Connector panel
assembly

1-9
DXC-S500 (E)
6. Remove one screw and remove the four solders from
the connectors (CN103, CN104, CN105 and CN106)
on the CN-2272 board, then remove the CN-2272
board from the connector mounting plate.
7. Remove the two nuts from the connector mounting
plate, then remove the two washers, two earth lugs and
two BNC connectors.
8. Remove the S-video connector from the connector
mounting plate.
9. Remove one nut from the connector mounting plate,
then remove one spacer and one synchro-socket.
10. Install the CN-2272 board in the reverse order of steps
1 to 9.
n
When attaching the connector panel assembly, insert the
portion A of the connector panel into the portion B of the
chassis securely.
1-4-9. FM-84 Board
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Remove the SY-301 board. (Refer to Section 1-4-6.)
3. Remove the IF-847 board. (Refer to Section 1-4-7.)
4. Remove the CN-2272 board. (Refer to Section 1-4-8.)
5. Disconnect the six flexible flat cables from the
connectors (CN401, CN852, CN1001, CN1002,
CN1005, CN1006) on the FM-84 board.
6. Remove the two screws for D-sub connector, two
screws for IEEE1394 connector and nut and washer of
mini-jack.
7. Remove the three screws, then remove the FM-84
board in the direction indicated by the arrow.
8. Install the FM-84 board in the reverse order of steps 1
to 7.
CN106
CN105
CN104
CN103
Connector mounting plate
S-video
connector
Nut
Nut
Solder
Solders
Washer
Earth lug
Earth lug
Spacer
BNC connector
Synchro-
socket
CN-2272 board
B 2x3
Connector panel
Chassis
Portion A
Portion B
B
C
A
B
CA
CN401
CN1006
CN1002
CN852
CN1001
CN1005
Flexible
flat cables
Flexible
flat cable
Flexible
flat cables
Washer
Nut Connector
mounting
screw
B 2.6x4
B 2x4
FM-84 board
D-sub
connector
Mini-jack
IEEE1394
connector

1-10 DXC-S500 (E)
1-4-10.Switching Regulator
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When replacing the switching regulator, also replace the
heat resisting rubber (R13) attached to the board.
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Remove the gasket plates (1), (2), (3) and (4). (Refer
to Section 1-3-3.)
3. Remove the air duct. (Refer to Section 1-5.)
4. Remove the two screws (B 2.6x4) and one screw
(PSW 3x6), then remove the switching regulator.
5. Disconnect the two harnesses from the connectors
(CN1 and CN2) on the switching regulator.
6. Remove the insulating plate from the switching
regulator.
7. Attach the switching regulator in the reverse order of
steps 1 to 6.
1-5. DC Fan
1. Remove the upper case assembly. (Refer to Section 1-
3-2.)
2. Remove the gasket plates (2), (3) and (4). (Refer to
Section 1-3-3.)
3. Remove the three screws (B 2.6x4), then remove the
air duct.
4. Cut the clamp and disconnect one harness from the
connector (CN301) on the SY-301 board.
5. Remove the four screws (PTP 2x14), then remove the
DC fan.
6. Attach the DC fan in the reverse order of steps 1 to 5.
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When attaching the DC fan and air duct, tighten the four
screws (PTP 2x14) and three screws (B 2.6x4) with
torque driver.
Used tool: Torque driver (J-6325-400-A)
Torque driver bit (J-6325-380-A)
Tightening torque: DC fan 0.1 ±0.01N.m
(1 ±0.1 kgf.cm)
Air duct 0.2 ±0.01N.m
(2 ±0.1 kgf.cm)
PSW
3x6
B 2.6x4
CN2
CN1 Insulating plate
Heat radiation
rubber (R13)
Harnesses
Switching
regulator
B 2.6x4
PTP 2x14
CN301
SY-301 board
DC fan
Air duct
Harness
Clamp