Sony BVP-9500WS User manual

COLOR VIDEO CAMERA
BVP-9500WS
BVP-9500WSP
MAINTENANCE MANUAL
1st Edition (Revised 1)
Serial No. 10001 and Higher: BVP-9500WS (UC)
Serial No. 30001 and Higher: BVP-9500WS (J)
Serial No. 40001 and Higher: BVP-9500WSP (CE)

BVP-9500WS/9500WSP MM
!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.

1 (E)
BVP-9500WS/9500WSP MM
Table of Contents
Manual Structure
Purpose of this manual ........................................................................................ 7 (E)
Relative manuals ................................................................................................. 7 (E)
Contents ............................................................................................................... 8 (E)
1. Service Overview
1-1. Circuit Description ................................................................................1-1 (E)
1-2. Function of Internal Switches ...............................................................1-5 (E)
1-2-1. TG-194 board .......................................................................1-5 (E)
1-2-2. TG-203A board ....................................................................1-6 (E)
1-2-3. DA-143 board.......................................................................1-7 (E)
1-2-4. EN-141 board .......................................................................1-8 (E)
1-2-5. AT-128 board .......................................................................1-9 (E)
1-3. Notes on Service .................................................................................1-10 (E)
1-3-1. Note on Replacement of Flash Memory ............................1-10 (E)
1-3-2. Note on Replacement of EEPROM....................................1-10 (E)
1-3-3. Circuit Protection Device ...................................................1-10 (E)
1-3-4. Power Voltage Error Detection Circuit..............................1-10 (E)
1-3-5. Note in Replacing the TG-194 Board ................................1-11 (E)
1-3-6. Precautions on Heat Radiation Spring ...............................1-12 (E)
1-4. Replacing the Fan................................................................................1-13 (E)
1-4-1. Replacing the Fans of the Left Panel .................................1-13 (E)
1-4-2. Replacing the Front Fan .....................................................1-15 (E)
1-4-3. Replacing the Top Fan .......................................................1-17 (E)
1-5. Replacing External Connectors...........................................................1-19 (E)
1-5-1. OHB Connector..................................................................1-19 (E)
1-5-2. ANALOG/DIGITAL CA Connectors................................1-21 (E)
1-5-3. VF Connector .....................................................................1-23 (E)
1-5-4. REMOTE Connector..........................................................1-24 (E)
1-5-5. TEST OUT Connector .......................................................1-25 (E)
1-5-6. MIC 1 Connector................................................................1-26 (E)
1-5-7. LENS Connector ................................................................1-27 (E)
1-6. Replacing Function Switches..............................................................1-28 (E)
1-6-1. Side Switch Panel Block/MIC 1 LEVEL Control..............1-28 (E)
1-6-2. Front Switch Panel Block...................................................1-31 (E)
1-6-3. RET/MIC INCOM Switches..............................................1-32 (E)
1-6-4. TALLY Switch...................................................................1-33 (E)
1-6-5. FILTER LOCAL/ND/CC Switches ...................................1-34 (E)
1-6-6. RET 1 Switch .....................................................................1-35 (E)
1-6-7. MIC POWER Switch .........................................................1-35 (E)
1-7. Replacement of Filter Disk Unit .........................................................1-36 (E)

2 (E) BVP-9500WS/9500WSP MM
1-8. Description on Flexible Card Wire .....................................................1-37 (E)
1-8-1. Disconnecting/Connecting the Flexible Card Wire ...........1-37 (E)
1-8-2. Forming Before Installation ...............................................1-38 (E)
1-9. CCD Unit ............................................................................................1-39 (E)
1-9-1. Precautions on Replacing the CCD Unit ............................1-39 (E)
1-9-2. Description on CCD Block Number ..................................1-39 (E)
1-9-3. Replacing the CCD Unit ....................................................1-40 (E)
1-10. Replacing Boards ................................................................................1-42 (E)
1-10-1. Replacing the PS-554 Board ..............................................1-42 (E)
1-10-2. Replacing the PR-249, PR-248 and DA-143 Boards .........1-43 (E)
1-10-3. Replacing the MB-830 Board ............................................1-44 (E)
1-10-4. Driver board .......................................................................1-45 (E)
1-10-5. Boards Inside CCD Unit ....................................................1-46 (E)
1-11. Setting/Adjusting Items after Replacing the Boards and Parts ...........1-48 (E)
1-12. Tools and Fixtures ...............................................................................1-48 (E)
1-13. Extension Board Usage .......................................................................1-49 (E)
1-14. Self-Diagnosis .....................................................................................1-50 (E)
2. Maintenance Menu
2-1. Maintenance Menu ................................................................................2-1 (E)
2-2. Details of Maintenance Menu ...............................................................2-3 (E)
2-2-1. Description of Maintenance Menu Display .........................2-3 (E)
2-2-2. System Setup Page ...............................................................2-4 (E)
2-2-3. Reference Store page............................................................2-5 (E)
2-2-4. Lens File Setup page ............................................................2-6 (E)
2-2-5. OHB File Setup page ...........................................................2-7 (E)
2-2-6. Auto Iris Setup page .............................................................2-8 (E)
2-2-7. Super Motion Setup page .....................................................2-8 (E)
2-2-8. OHB Trimming page............................................................2-9 (E)

3 (E)
BVP-9500WS/9500WSP MM
3. Electrical Alignment
3-1. Preparation ............................................................................................3-1 (E)
3-1-1. Equipment required ..............................................................3-1 (E)
3-1-2. Notes on adjustment .............................................................3-2 (E)
3-1-3. Connection ...........................................................................3-2 (E)
3-1-4. Initial Settings ......................................................................3-3 (E)
3-1-5. Maintaining the Grayscale Chart .........................................3-5 (E)
3-2. Video Adjustment .................................................................................3-7 (E)
3-2-1. V Substrate Adjustment .......................................................3-7 (E)
3-2-2. RPN Correction Adjustment ................................................3-9 (E)
3-2-3. OFFSET Adjustment..........................................................3-11 (E)
3-2-4. TEST Signal Level Adjustment .........................................3-13 (E)
3-2-5. VA Gain Adjustment..........................................................3-14 (E)
3-2-6. NR Gain Adjustment..........................................................3-16 (E)
3-3. Encoder System Adjustment ...............................................................3-18 (E)
3-3-1. DA Output Level Adjustment (PR-248 Board) .................3-18 (E)
3-3-2. R Level Adjustment ...........................................................3-20 (E)
3-3-3. G Level Adjustment ...........................................................3-21 (E)
3-3-4. B Level Adjustment ...........................................................3-22 (E)
3-3-5. Y Level Adjustment ...........................................................3-23 (E)
3-3-6. VTR Y/R-Y/B-Y Level Adjustment ..................................3-24 (E)
3-3-7. CCU Y Level Adjustment ..................................................3-26 (E)
3-3-8. CCU R-Y/B-Y Level Adjustment ......................................3-27 (E)
3-3-9. RET Level Adjustment ......................................................3-28 (E)
3-3-10. VBS Y Level Adjustment ..................................................3-29 (E)
3-3-11. I (V) Level Adjustment ......................................................3-30 (E)
3-3-12. Q (U) Level Adjustment.....................................................3-31 (E)
3-3-13. I/Q (V/U) Phase Adjustment..............................................3-32 (E)
3-3-14. Burst Adjustment ...............................................................3-33 (E)
3-3-15. INT SC Phase Adjustment .................................................3-34 (E)
3-3-16. MONITOR Gain Adjustment.............................................3-35 (E)
3-4. AD, DA System Adjustment...............................................................3-36 (E)
3-4-1. Check of DA Gain Adjustment ..........................................3-36 (E)
3-4-2. AD Gain Adjustment..........................................................3-37 (E)
3-4-3. V Modulation Balance Adjustment....................................3-38 (E)
3-4-4. AD PHASE Adjustment.....................................................3-40 (E)
3-5. Filter Positioning Adjustment .............................................................3-41 (E)
3-6. Adjustment After Replacement of ND Filter ......................................3-42 (E)

4 (E) BVP-9500WS/9500WSP MM
4. Spare Parts
4-1. Notes on Repair Parts ..................................................................................4-1
4-2. Exploded Views ..........................................................................................4-2
4-3. Electrical Parts List ...................................................................................4-16
4-4. Supplied Accessories ................................................................................4-82
4-5. Fixtures List ..............................................................................................4-82
5. Semiconductor Pin Assignments
6. Block Diagrams
Block Diagram Index ..................................................................................6-1
Overall .........................................................................................................6-3
DR-377 ........................................................................................................6-6
TG-203 ........................................................................................................6-6
PA-226 ........................................................................................................6-7
SH-69 ..........................................................................................................6-8
VA-189........................................................................................................6-8
TG-194 ........................................................................................................6-9
VA-200......................................................................................................6-10
AD-157......................................................................................................6-11
MEM-98 ....................................................................................................6-12
DA-143......................................................................................................6-13
PR-248.......................................................................................................6-15
PR-249.......................................................................................................6-17
EN-141 ......................................................................................................6-18
AT-128 ......................................................................................................6-20

5 (E)
BVP-9500WS/9500WSP MM
7. Schematic Diagrams
Schematic Diagram Index ...........................................................................7-1
PA-226 ........................................................................................................7-2
NR-65..........................................................................................................7-3
VA-189........................................................................................................7-4
SH-69 ..........................................................................................................7-6
DR-377........................................................................................................7-8
TG-194 ......................................................................................................7-10
TG-203 ......................................................................................................7-16
VA-200......................................................................................................7-20
AD-157......................................................................................................7-24
MEM-98....................................................................................................7-26
DA-143......................................................................................................7-31
PR-248.......................................................................................................7-36
PR-249.......................................................................................................7-47
EN-141 ......................................................................................................7-58
AT-128 ......................................................................................................7-64
PS-553 .......................................................................................................7-70
PS-554 .......................................................................................................7-73
MB-830 .....................................................................................................7-74
CN-1787....................................................................................................7-78
CN-1927....................................................................................................7-80
CN-1928....................................................................................................7-80
CN-1929....................................................................................................7-80
CN-1930....................................................................................................7-81
CN-2045....................................................................................................7-81
SW-1008 ...................................................................................................7-81
SW-1009 ...................................................................................................7-81
Frame Wiring ............................................................................................7-82
SW-936...............................................................................................7-82
SW-1010.............................................................................................7-82
SW-1011.............................................................................................7-82
SW-937...............................................................................................7-83
CN-2095 .............................................................................................7-84

6 (E) BVP-9500WS/9500WSP MM
8. Board Layouts
Board Layout Index.....................................................................................8-1
AD-157........................................................................................................8-3
AT-128 ........................................................................................................8-5
CN-1787 ......................................................................................................8-7
CN-1927 ......................................................................................................8-9
CN-1928 ......................................................................................................8-9
CN-1929 ......................................................................................................8-9
CN-1930 ......................................................................................................8-9
CN-2045 ......................................................................................................8-9
CN-2095 ......................................................................................................8-9
DA-143......................................................................................................8-11
DR-377 ......................................................................................................8-13
EN-141 ......................................................................................................8-15
MB-830 .....................................................................................................8-17
MEM-98 ....................................................................................................8-19
NR-65 ........................................................................................................8-21
PA-226 ......................................................................................................8-21
PR-248.......................................................................................................8-23
PR-249.......................................................................................................8-25
PS-553 .......................................................................................................8-27
PS-554 .......................................................................................................8-29
SH-69 ........................................................................................................8-31
SW-936 .....................................................................................................8-33
SW-937 .....................................................................................................8-33
SW-1008 ...................................................................................................8-33
SW-1009 ...................................................................................................8-33
SW-1010 ...................................................................................................8-33
SW-1011 ...................................................................................................8-33
TG-194 ......................................................................................................8-35
TG-203 ......................................................................................................8-37
VA-189......................................................................................................8-39
VA-200......................................................................................................8-41

7 (E)
BVP-9500WS/9500WSP MM
Manual Structure
Purpose of this manual This manual is the maintenance manual for Color Video Camera BVP-9500WS/
9500WSP.
This manual describes the information items on maintenance, and items that premise
the service based on the components parts, assuming use of system and service
engineers.
Relative manuals Besides this “maintenance manual” the following manuals are available for this unit.
..
..
.BVP-9500WS/9500WSP Operation Manual (Supplied with this unit)
This manual is necessary for application and operation of this unit.
..
..
.BVP-9500WS/9500WSP Installation and Maintenance Manual
(Supplied with this unit)
This manual describes the installation and maintenance information that is neces-
sary at the time of primary service, assuming use of system and service engineers.
..
..
.BVP-900-Series System Manual BKP-9901 (Available on request)
This manual is necessary for connection and operation of this unit and other
peripheral equipments.
If this manual is required, please contact your local Sony Sales Office/Service
Center.
..
..
.“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
maintenance manual for the corresponding unit. The maintenance manual contains
a complete list of all semiconductors and their ID Nos., and thus should be used
together with the CD-ROM.
Part number: 9-968-546-XX

8 (E) BVP-9500WS/9500WSP MM
Contents This followings are summaries of the each section for understanding the manual.
Section 1 Service Overview
Describes information about circuit description, replacement of part and notes on
services.
Section 2 Maintenance Menu
Describes about the maintenance menu.
Section 3 Electrical Alignment
Describes electrical adjustment necessary for maintenance of the unit or replacement
of parts.
Section 4 Spare Parts
Describes parts list, exploded views, supplied accessories and fixtures list used in
the unit.
Section 5 Semiconductor Pin Assignments
Contains information on semiconductors used for the unit.
It includes a complete list of the semiconductors and their ID Nos. for retrieving
information on “Semiconductor Pin Assignments”CD-ROM, which is available
separately.
Please refer to this section together with the “Semiconductor Pin Assignments”
CD-ROM.
Information on the semiconductors not contained in the CD-ROM at the time of
issue of this manual, if any, is given in this section as well.
Section 6 Block Diagrams
Describes overall block diagram and the block diagrams for every circuit board.
Section 7 Schematic Diagrams
Describes schematic diagrams for every circuit board and frame wiring.
Section 8 Board Layouts
Describes board layouts for every circuit board.

1-1 (E)
BVP-9500WS/9500WSP MM
Section 1
Service Overview
1-1. Circuit Description
The electrical circuit of the BVP-9500WS/9500WSP consists of the following blocks. This section
describes each block separately.
.CCD drive block
.Power supply block
.Video signal processing block
.System control block
(1) CCD drive block
PA-226/226A/226B boards
The PA boards are a flexible boards. There are three PA boards for R, G and B channels. A CCD and its
preamplifier are mounted on each board.
DR-377A board
CCD horizontal clock and reset gate drivers are mounted on the DR-377A board.
It supplies various pulses and voltages required for driving the CCD to the PA flexible boards.
TG-194 board
A CPU is mounted on the TG-194 board. The CPU performs data processing inside the CCD drive block
according to various commands. It performs RPN correction also.
TG-203A board
CCD vertical clock drivers are mounted on the TG-203A board.
This board generates various pulses such as a CCD drive pulse and a sample pulse. These pulses are
based on the clock PLL-locked by the VCO control voltage sent from the camera. The generated pulses
are sent to the DR-377A and PA-226 boards.
This board generates the Vsub voltage and the reset gate pulse (RG) bias. They are supplied to the CCDs
via the DR-377A board.
CN-2095 board
The CN-2095 board has a D-SUB 29-pin connector and performs interfacing with the camera.
RGB signals input from the VA-189 board are sent to the camera, while command data sent from the
camera are sent to the TG-194 board.
SH-69 board
The SH-69 board generates black shading correction signals. The correction signals generated here are
added to the main signal at the VA-189 board.
NR-65 board
The NR-65 board is a low pass filter for extracting the clock components of video signals sent from the
PA-226 board.
VA-189 board
The VA-189 board switches the gain of video signals sent from the NR-65 board. It also generates the test
signal.

1-2 (E) BVP-9500WS/9500WSP MM
x3 speed signals
The x3 speed signals above are input to the memory and then output from the memory as follows.
x1 speed signal after conversion
Line 1 output
Line 2 output
Line 3 output
123 654
field field field field field field
1 field 4 field
2 field 5 field
3 field 6 field
(2) Power supply block
The UNREG power input from the camera adaptor is supplied to the PS-553/554 boards via the CN-1787
board. The PS-553 board generates +5.5V, +2.5V (Line 1 digital power supply), +3.3V, _5.5V, FAN A/
B, and +9.3V power. The PS-554 board generates +2.5V (Line 2/3 digital power), _3.5V, +6.6V,
+15.5V, and _11.5V power.
The power for tally drive is generated at the MB-830 board by the control signal from the AT-128 board
and is supplied to the viewfinder. The UNREG power for the lens and viewfinder is the UNREG power
from the camera adaptor.
(3) Video signal processing block
VA-200 board
The video signals sent from the CCD drive block are subject to the following signal processing in this block.
.Gain control
.White shading correction
.Flare correction
.Pre-knee correction
After this signal processing, the video signals are sent to the AD-157 board.
AD-157 board
The video signals sent from the VA-200 board are passed through the corresponding filters at x1 speed
and x3 speed, and converted to digital signals by the 12-bit AD converter. The 12-bit digital signal is then
output to the MEM-98 board.
H synchronization with the CCD drive block is performed by sending the VCO control DC to the CCD
drive block. The VCO control DC is generated by PLL-processing the G channel signal of the AD input
and the H signal input from the MEM-98 board.
MEM-98 board
The RGB 12-bit digital signals sent from the AD-157 board are processed as follows at x1 speed and x3
speed, and output to the DA-143 board. The signals input to the DA-143 board are output to the PR-248/
249 boards without being processed.
xx
xx
x1 speed processing:
Signals input to the MEM-98 board are output as the Line 1 signal from the MEM-98 board. No
signals are output from Line 2 and Line 3 at this time.
xx
xx
x3 speed processing:
Signals input to the MEM-98 board are converted from x3 speed to x1 speed in the MEM-98 board.
x3 speed digital signals are input to the memory circuit by field, while the signals output from the
memory are output as x1 speed signals by field. x3 speed signals are processed by the memory
circuit as follows.
1-1. Circuit Description

1-3 (E)
BVP-9500WS/9500WSP MM
PR-248 board
The Line 1 digital signal sent from the DA-143 board is processed as follows in this board.
.Various detail corrections
.Linear matrix correction
.Knee correction
.Knee saturation correction
.Pedestal control
.Black gamma correction
.Gamma correction
.White clip
.Black clip
.16:9/4:3 processing
.DA conversion
Digital signals are processed as 10-bit RGB digital signals, and output to the camera adaptor via the CA-
1787 board. The analog signals converted in the DA circuit are sent to the EN-141 board.
This board outputs the following signals.
.White shading correction signal
.VF detail signal
.Various timing pulses
PR-249 board
The Line 2/3 digital signals sent from the DA-143 board are input to the PR-249 board via the PR-248
board. The PR-249 board performs the following processings for the Line 2/3 digital signals.
.Various detail correction
.Linear matrix correction
.Knee correction
.Knee saturation correction
.Pedestal control
.Black gamma correction
.Gamma correction
.White clip
.Black clip
.16:9/4:3 processing
.Digital signal parallel/serial conversion
Digital signals of each line are processed as D1 format serial digital signals from 10-bit RGB digital
signals, and output to the camera adaptor via the CA-1787 board.
DA-143 board
The DA-143 board processes digital shading signals sent from the PR-248 board as follows at x1 and x3
speeds.
Shading waveform when xx
xx
x1 speed:
Digital signals input to the DA-143 board are DA-converted and output to the VA-200 board.
Shading waveform when xx
xx
x3 speed :
Digital signals input to the DA-143 board are x1 speed signals. They are therefore converted from
x1 speed to x3 speed in the memory circuit. Signals converted to x3 speed are DA-converted and
output to the VA-200 board.
1-1. Circuit Description

1-4 (E) BVP-9500WS/9500WSP MM
EN-141 board
YRGB signals sent from the PR-248 board are converted to Y/R-Y/B-Y signals in the matrix circuit,
added with the REF signal of the CCU, and output to the camera adaptor.
The R-Y/B-Y signals are converted to chroma signals in the encoder circuit, and added with the Y signal
to generate the VBS signal.
The R, G, B and VBS signals selected are sent to the TEST OUT connector and RM (remote controller).
The zebra, character and cursor, etc. are added for the VF signal.
The external synchronization for single usage is performed as follows. The GENLOCK signal input to the
camera adaptor is separated into the EXT SYNC signal and EXT SC signal. The EXT SYNC signal is
sent to the PR-248 board, compared with the SC signal input from PR-248 board to control the frequency
of the 4 Fsc oscillator. In single use. The 4 Fsc generator serves as the reference signal source of the
camera.
(4) System control block
The AT-128 board performs information control inside the camera and information exchange with outside
using the 32-bit RISC microprocessor. The CCU performs communication using serial data via the
camera adaptor. The main functions of the system control block are as follows.
.Controls the camera based on information from the CCU
.Transmits camera head information such as self-diagnosis results and iris position to the CCU
.Control of various files
.Transmission and reception of OHB files with the microprocessor in the CCD unit
.Auto setup
.Generation of characters for the viewfinder
1-1. Circuit Description

1-5 (E)
BVP-9500WS/9500WSP MM
1
2
3
4
56
A
B
C
D
E
F
G
H
J
K
TG-194 BOARD (B SIDE)
S1
S3
S2
1-2. Function of Internal Switches
1-2-1. TG-194 board
n
Never change the settings of the “Factory use” switches.
Ref. No. Switch name Description Factory setting
S1 — Factory use Momentary
S2 BLM CORRECT OFF Press this switch to check for RPN Momentary
correction points.
S3 — Factory use Fully clockwise
1-2. Function of Internal Switches

1-6 (E) BVP-9500WS/9500WSP MM
1
ABC
2
3
4
5
TG-203A BOARD (B SIDE)
S1
P
N
1-2-2. TG-203A board
Ref. No. Switch name Description Factory setting
S1-1 N/P To be fixed according to model N (BVP-9500WS)
N: NTSC model (BVP-9500WS) P (BVP-9500WSP)
P: PAL model (BVP-9500WSP)
S1-2 to 4 —Not used OFF
1-2. Function of Internal Switches

1-7 (E)
BVP-9500WS/9500WSP MM
DA-143 BOARD (B SIDE)
S1
12 3
B
A
C
D
1-2-3. DA-143 board
Ref. No. Switch name Description Factory setting
S1 —Factory use (for programming FPGA) Don’t care.
For detail contact Sony Sales Office/Service
Center.
1-2. Function of Internal Switches

1-8 (E) BVP-9500WS/9500WSP MM
S600
S800
S801
S601
CN1
12 3 4 5 6 78
L
K
J
H
G
F
E
D
C
B
A
EN-141 BOARD (A SIDE)
1-2-4. EN-141 board
Ref. No. Switch name Description Factory setting
S800 RET/REF select switch Selects the return signal to be output to RET
the viewfinder during standalone operation
Be sure to set this switch to RET position
while connecting with the CCU
RET: PB VIDEO signal
REF: GENLOCK VIDEO signal
S801 TEST OUT select switch Selects the output signal at the TEST OUT CAM
connector, the camera output or return
output
CAM: Camera output
RET: Return output
S600-1 Q/U signal ON/OFF switch Use when adjusting VBS Q/U signals. ON
S600-2 I/V signal ON/OFF switch Use when adjusting VBS I/V signals. ON
S601-1 Chroma signal ON/OFF switch Use when setting chroma signals to OFF. ON
S601-2 —Not used ON
1-2. Function of Internal Switches

1-9 (E)
BVP-9500WS/9500WSP MM
1
K
J
H
G
F
E
D
C
B
A
L
2 345 678
S1
S2
S3
AT-128 BOARD (A SIDE)
1-2-5. AT-128 board
n
Never change the settings of the “Factory use”switches.
Ref. No. Switch name Description Factory setting
S1 —Factory use
S2
S3-1 to 3 —Factory use OFF
S3-4 ON/OFF Set to ON when the OHB Trimming page OFF
of the maintenance menu is displayed.
(Refer to Section 2.)
n
Be sure to reset this switch to OFF after
using the OHB trimming page during
adjustment.
1-2. Function of Internal Switches

1-10 (E) BVP-9500WS/9500WSP MM
1-3. Notes on Service
1-3-1. Note on Replacement of Flash Memory
The flash memories (IC8 and IC9) are mounted on the AT-128 board. The program has been written into
them at the factory.
If the flash memory requires replacing, be sure to replace it with written one.
For details, contact your local Sony Sales Office/Service Center.
1-3-2. Note on Replacement of EEPROM
The stored data of EEPROM on the AT-128 board is as shown below.
Ref.No. Stored data
IC7, IC50 Reference file, Scene file and Lens file
When replacing either of the above EEPROMs, all data stored in memory will be lost. After replacing the
EEPROM, register the above files.
1-3-3. Circuit Protection Device
The CN-1930, MB-830 and PS-553 boards are provided with positive thermistors for power line to
protect circuits. This device limits a current by steeply increasing the inner resistance when the device
rises to a certain temperature due to overcurrent or high ambient temperature. If the device is activates
once, turn off the power and check an equipment concerned; camera or other equipment connected to the
LENS or REMOTE connector of the camera. After the cause is eliminated and the device cools off, turn
on the power again. If there is no trouble, the unit will operate normally. It takes about a minute for the
device to cool off after powering off the unit.
Board Ref No. Address Equipment protected
CN-1930 THP1 —Equipment connected to REMOTE connector
MB-830 THP1 A5 (A side) Equipment connected to LENS connector
PS-553 THP1 E1 (A side) Power supply for fans
1-3-4. Power Voltage Error Detection Circuit
The PS-553 and PS-554 boards has the detection circuit of abnormal power voltage. If an abnormal
voltage is detected, the circuit will stop powering.
When the circuit stops powering by detecting an abnormal voltage, turn off the power and eliminate the
problems, and then turn on the power again.
1-3. Notes on Service