Sony RM-B750 Service Manual
REMOTE CONTROL UNIT
RM-B750
MAINTENANCE MANUAL
1st Edition (Revised 1)
Serial No. 100001 and Higher
! 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.
RM-B750
CAUTION
ADVARSEL
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 recommandé par le
constructeur.
Mettre au rebut les batteries usagées conformément
aux instructions du fabricant.
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.
Hävitä käytetty paristo valmistajan ohjeiden
mukaisesti.
RM-B750
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig
håndtering.
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
1 (P)
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)
RM-B750
Table of Contents
Manual Structure
Purpose of this manual ........................................................................................ 3 (E)
Relative manuals ................................................................................................. 3 (E)
Contents ............................................................................................................... 4 (E)
1. Service Overview
1-1. Connector Input/Output Signals ............................................................1-1 (E)
1-2. Connection Connector/Cable ................................................................ 1-1 (E)
1-3. Opening the RM-B750 ..........................................................................1-1 (E)
1-4. Board Layouts ....................................................................................... 1-2 (E)
1-5. Functions of Internal Switches .............................................................. 1-2 (E)
1-6. Flexible Card Wire ................................................................................1-3 (E)
1-6-1. Disconnecting/Connecting the Flexible Card Wire ............. 1-3 (E)
1-6-2. Shaping the Flexible Card Wire ...........................................1-4 (E)
1-7. Replacing the LCD Unit........................................................................ 1-5 (E)
1-8. Replacing the Touch Panel and Backlight ............................................ 1-7 (E)
1-9. Installing the IRIS Knob Assembly and WHITE Knob Assembly ....... 1-8 (E)
1-9-1. Installing the IRIS Knob Assembly ..................................... 1-8 (E)
1-9-2. Installing the WHITE Knob Assembly ................................ 1-9 (E)
1-10. Note on Service .....................................................................................1-9 (E)
1-10-1. Information of the Software Version ................................... 1-9 (E)
1-10-2. Description on Backup Battery ............................................ 1-9 (E)
1-10-3. Writing and Rewriting the PLD Internal Data ................... 1-10 (E)
1-10-4. Note on Replacing the FRAM ............................................ 1-11 (E)
1-10-5. Checking the Software Version ......................................... 1-11 (E)
1-10-6. Updating the Software ........................................................ 1-11 (E)
1-10-7. Touch Panel Calibration ..................................................... 1-12 (E)
1-10-8. Diagnosis ............................................................................1-13 (E)
1-10-9. Circuit Protective Elements ................................................ 1-14 (E)
1-10-10. Unleaded Solder .................................................................1-14 (E)
1-11. Recommended Replacement Parts ......................................................1-15 (E)
RM-B750
2. Electrical Alignment
2-1. Preparation ............................................................................................ 2-1 (E)
2-2. Adjusting the Video Level .................................................................... 2-2 (E)
1 (E)
3. Spare Parts
3-1. Notes on Repair Parts .................................................................................. 3-1
3-2. Exploded Views .......................................................................................... 3-2
3-3. Electrical Parts List ..................................................................................... 3-6
4. Semiconductor Pin Assignments
5. Block Diagram
Overall .................................................................................................................... 5-1
6. Schematic Diagrams
MPU-124 ................................................................................................................ 6-2
VA-211 ................................................................................................................... 6-8
VR-277 ................................................................................................................. 6-10
LED-385 ............................................................................................................... 6-13
LED-389 ............................................................................................................... 6-14
CN-2278 ............................................................................................................... 6-15
CN-2308 ............................................................................................................... 6-15
Frame Wiring........................................................................................................ 6-15
2 (E)
7. Board Layouts
MPU-124 ................................................................................................................ 7-2
VA-211 ................................................................................................................... 7-4
VR-277 ................................................................................................................... 7-5
CN-2278 ................................................................................................................. 7-6
CN-2308 ................................................................................................................. 7-6
LED-385 ................................................................................................................. 7-6
LED-389 ................................................................................................................. 7-6
RM-B750
Purpose of this manual
Relative manuals
Manual Structure
This manual is the maintenance manual for Remote Control Unit RM-B750.
This manual is intended for use by the trained system enginneers and sevice enginneers, and describes information (service overview, parts lists, schematic diagram
and board layout) on the premise of component level service.
Besides this maintenance manual the following manuals are available for this unit.
..
. Operation Manual (Supplied with this unit)
..
This manual is necessary for application and operation of this unit.
Part number: 3-620-577-XX
..
. System Manual (Available on request)
..
This manual is necessary for connection and operation of this unit and other
peripheral equipment.
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
RM-B750
3 (E)
Contents
The following are summaries of the each section for understanding the manual.
Section 1 Service Overview
Describes information about connector input/output signals, function of internal
switches board locations, replacement of part and notes on services.
Section 2 Electrical Alignment
Describe video level adjustment procedure.
Section 3 Spare Parts
Describes parts list, exploded views and frame list used in the unit.
Section 4 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 5 Block Diagram
Describe overall block diagram.
Section 6 Schematic Diagrams
Describes schematic diagrams for every circuit board and frame wiring.
Section 7 Board Layouts
Describes board layouts for every circuit board.
4 (E)
RM-B750
Section 1
Service Overview
1-1. Connector Input/Output Signals
MONITOR
(BNC Type)
SDTV (NTSC/PAL) : VBS output (1.0 V p-p, 75 Z)
HDTV : Y signal output (1.0 V p-p, 75 Z)
* : This signal is output all the time.
CAMERA
(8P, FEMALE)
No. Signal Specification
1 TX (+) RM SERIAL DATA
2 TX (_)
3 RX (+) CAMERA SERIAL DATA
4 RX (_)
5 VIDEO (GND) GND for VIDEO
6 POWER (+) IN RM POWER
7 POWER (_) IN GND for POWER
8 VIDEO (X) OUT VBS 1.0 V p-p, Zo = 75 Z
C CHASSIS GND CHASSIS GND
*
1
2
7
8
6
3
4
5
(External View)
1-3. Opening the RM-B750
1. Loosen the screw (with drop-safe) and open the RM
connector cover in the direction of the arrow.
Screw
(with drop-safe)
RM connector cover
2. Loosen the four screws (with drop-safe) and open the
operation panel assembly and the bottom cover in the
direction of the arrow respectively.
Bottom cover
Operation panel assembly
1-2. Connection Connector/Cable
Connection made with the connector panels during installation or service, should be made with the connectors/
complete cable assemblies specified in the following list,
or equivalent parts.
Connector function Connection connector/Cable
CAMERA 1-706-848-11 PLUG, 8P MALE or
(8P, FEMALE) 1-783-372-11 Connection cord
(10 m) (supplied)
MONITOR 1-569-370-12 PLUG, BNC
(BNC)
RM-B750
Screws
(with drop-safe)
Screws
(with drop-safe)
1-1 (E)
1-4. Board Layouts
1-5. Functions of Internal Switches
1-4. Board Layouts
VA-211 board
CN-2308 board
LED-389 board
LCD unit
CN-2278 board
MPU-124 board
LED-385 board
VR-277 board
1-5. Functions of Internal Switches
MPU-124 Board
. S201
This switch is not used.
Factory-setting: OFF
. S205 (BUZZER ON/OFF)
This switch selects whether the buzzer sounds (ON) or
not (OFF) when the CALL signal is input.
Factory-setting: ON
*1: S205 is not used on the MPU-124 board with suffix -21 and higher.
. S206 (CCU-PW ON/OFF)
This switch turns on/off the power to the front panel.
Factory-setting: ON
*1
C
S206
*1
S205
S201
B
A
12 3
MPU-124 board (A side)
1-2 (E)
RM-B750
Contact surface
Type B
Type C
Type D
Contact surface
Connector
Connector
Recessed portion
Recessed portion
Isolation surface (blue)
Connector
Recessed portion
Portion A
Portion A
Connector
Type A
Flexible card wire
Narrow
Contacting surface
Slot
Wide
Portion A
Portion A
Portion A
Portion A
Portion A
Portion A
1-6. Flexible Card Wire
1-6-1. Disconnecting/Connecting the
Flexible Card Wire
Life of flexile card wire will be significantly shortened if it
is folded. Be very careful not to fold the flexible card wire.
The five types of different shape connectors are used in
this unit. (Type A to type E)
Because the direction of the flexible card wire is different
depending on the shape of the connector, be careful when
connecting the flexible card wire.
1-6. Flexible Card Wire
Disconnecting (Type A to D)
1. Turn off the power.
2. Slide the portion A in the direction of the arrow to
unlock and pull out the flexible card wire.
Connecting (Type A to D)
m
. Do not insert the flexible card wire sideways.
. Confirm that there is no stain or dust on the contact
surface of the flexible card wire.
1. Slide the portion A in the direction of the arrow and
securely insert the flexible card wire into the deep end
of the connector.
2. Return the portion A to its original position and lock
the connector.
n
When connecting the flexible card wire, check the connector shape, and great care should be taken for the direction
of the contact surface or isolation surface (blue).
(Refer to illustration of the type A to type D.)
RM-B750
1-3 (E)
1-6. Flexible Card Wire
Disconnecting (Type E)
1. Turn off the power.
2. Open the portion A in the direction of the arrow and
pull out the flexible card wire.
Type E
Connector
Portion A
Flexible card wire
Isolation surface
(blue)
Connecting (Type E)
1-6-2. Shaping the Flexible Card Wire
When a new flexible card wire reaches as a service part,
carefully fold it referring to the illustration before installation into connector.
n
Never re-stretch the flexible card wire that has been folded
once, to the original shape.
Between CN-2278 board CN2 5 VR-277 board CN2
VR-277 board (CN2) side
Contacting
surface
11 mm
View from
the top
Insert the flexible card wire with the isolation surface
(blue) facing up and close the portion A.
Type E
Portion A
Isolation surface
(blue)
3 mm
7 mm
11 mm
Contacting
surface
CN-2278 board (CN2) side
Insulated surface (blue)
About 28 mm
View from
the side
1-4 (E)
RM-B750
1-7. Replacing the LCD Unit
1-7. Replacing the LCD Unit
n
Life of flexible card wire will be significantly shortened if it
is folded. Be very careful not to fold the flexible card wire.
1. Remove the four RE knobs.
n
Poly-washer is installed under the RE knob. Be careful
not to lose the poly-washer.
2. Remove the IRIS knob assembly.
3. Remove the WHITE knob assembly.
RE knob
Washer
IRIS control assembly
WHITE knob assemblies
7. Remove the three screws and the RM shield assembly.
8. Remove the two screws and the PWB (BKP) stopper.
B2.6 x 5
B2.6 x 5
RM shield assembly
B2.6 x 5
PWB
(BKP) stopper
B2.6 x 5
4. Open the RM-B750. (Refer to Section 1-3.)
5. Remove the connectors (CN104, CN201) from the
MPU-124 board.
6. Remove the screws and the operation panel assembly
in the direction of the arrow.
Operation
panel assembly
MPU-124 board
(CN104)
MPU-124 board
(CN201)
B3 x 5
Flexible card wires
RM-B750
1-5 (E)
1-7. Replacing the LCD Unit
9. Remove the screw.
10. Hold the two PWB holders using a long nose pliers as
shown in Fig. and remove the MPU-124 board by
holding it up.
n
Be careful not to damage the printed foil pattern of the
MPU-124 board with the tip of a long nose plier.
Fig.1
PWB holder
B2.6 x 5
MPU-124
board
Long nose pliers
MPU-124 board
11. Disconnect the connectors (CN2, CN3, CN4, CN6)
from the VR-277 board.
12. Remove the two screws and hexagonal supports, and
remove the VR-277 board.
Hexagon supports
B2.6 x 5
CN3
CN6
VR-277 board
CN2
CN4
1-6 (E)
PWB holders
RM-B750
1-8. Replacing the Touch Panel and Backlight
1-7. Replacing the LCD Unit
13. Remove the two screws and the CN-2278 board.
14. Remove the screws (B2.6 x 5 : 3 pcs, PS2.6 x 5 : 1
pc) and the LCD unit.
15. Install the new LCD unit by reversing the steps of
removal.
n
The new LCD unit is supplied with the protection
sheet attached to the touch panel. Peel off the protection sheet before installation.
LCD unit
B2.6 x 5
PS2.6 x 5
CN-2278 board
B2.6 x 5
1-8. Replacing the Touch Panel and
Backlight
1. Remove the LCD unit. (Refer to Section 1-7.)
2. Disconnect the connectors (CN2, CN3, CN5, CN6)
from the LCD unit board.
n
Life of flexible card wire will be significantly shortened if it is folded. Be very careful not to fold the
flexible card wire.
CN6
CN3
CN2
CN5
LCD unit board
Protection
sheet
Touch panel of LCD unit
16. Install the four RE knobs, the IRIS control knob
assembly and the two WHITE knob assemblies.
n
When installing the IRIS control knob assembly and
the WHITE knob assemblies, refer to Section 1-9.
RM-B750
1-7 (E)
1-8. Replacing the Touch Panel and Backlight
1-9. Installing the IRIS Knob Assembly and WHITE Knob Assembly
3. Remove the four screws, the touch panel and the
backlight.
4. Install the new touch panel or the new backlight in the
LCD unit board.
n
The new touch panel is supplied with the protection
sheet attached. Peel off the protection sheet before
installation.
Precision
P1.7 x 2.5
LCD unit board
Precision
P1.7 x 2.5
Precision
P1.7 x 2.5
Back light
1-9. Installing the IRIS Knob Assembly
and WHITE Knob Assembly
1-9-1. Installing the IRIS Knob Assembly
1. Rotate the shaft of the IRIS knob fully in the direction
of the arrow.
2. To install the IRIS control knob assembly, align the
white mark of the IRIS control knob assembly with the
mark (shown in Fig. 1) on the operation panel.
IRIS control knob assembly
White mark
Touch panel
Protection
sheet
Touch panel
5. When installing the LCD unit in the RM-B750, reverse
the steps in Section 1-7.
Mark on the operation
panel
Fig. 1
IRIS knob assembly
Mark on the operation panel
Shaft of IRIS control knob
1-8 (E)
RM-B750
1-9. Installing the IRIS Knob Assembly and WHITE Knob Assembly
1-10. Note on Service
1-9-2. Installing the WHITE Knob Assembly
n
The two WHITE knob assemblies can be replace in the
same way.
1. Rotate the shaft of the WHITE knob fully and stop
rotation at the position that generates the clicking
sound.
2. Install the WHITE knob assembly while aligning the
white mark of it with the corresponding mark of the
operation panel.
WHITE knob assemblies
White mark
1-10. Note on Service
1-10-1. Information of the Software Version
There are the following Camcorder models to which this
unit can be connected:
Model Software File writing to
HDW-700/700A series Ver.1.00 or later No
HDW-F900 series Ver.1.00 or later Yes
HDW-750/730 series Ver.1.50 or later No
MSW-900 series Ver.1.60 or later No
DVW-707/709WS/ Ver.1.19 or later No
790WS series
No* : Data writing to the memory stick in the camera is possible.
1-10-2. Description on Backup Battery
w
The lithium battery is a critical part to safe operation.
Replace the component with Sony part whose part number
is listed in the manual published by Sony.
If the component is replaced by any part other than the
specified ones, this may cause a fire or electric shock.
Memory Stick
in this unit
*
*
Shaft of the WHITE knob
Mark on the
operation panel
c
When replacing the lithium battery, ensure that the battery
is installed with + and _ poles connected to the correct
terminals. An incorrect connection may cause an explosion
or leakage of fluid as a result, physical damage in the
surrounding materials may be caused.
A lithium battery on the MPU-124 board is used to back up
the date data to be stored in the memory stick. Reset the
date data using he RM configuration menu is the Maintenance
menu (Refer to the operation manual “Initial Settings”.)
after replacing the MPU-124 board or the dead battery.
Replacement part : BT1 (MPU-124 board)
DescriptiWon : CR-2032 (Lithium battery)
Parts number : ! 1-528-174-31
Recommended replacement period : Every 7 years
m
. When replacing the MPU-124 board, it is recommended
to replace the battery at the same time.
. Resetting the date data is required also when the battery
is removed from the battery holder.
RM-B750
1-9 (E)
1-10. Note on Service
1-10-3. Writing and Rewriting the PLD
Internal Data
This unit uses the PLD (Programmable Logic Device) that
supports the e-Production (EPR) system to write and
rewrite the internal data.
If the part listed below needs to be replaced or to be
upgraded, contact your Sony Sales Office/Service Center.
n
The part number of PLD (or ROM for PLD) in which data
is not written yet, is shown in “Section 3. Spare Parts”.
Therefore, if part replacement is required, write the data by
the following procedure.
In the case of the PLD type that runs on the program stored
in external ROM, data needs not to be written only by
replacing the part if the specific PLD only is defective.
e-Production system has the advantages shown
below.
. To write/rewrite the PLD internal data:
1. The standard fixture (cable) can be used.
2. The standard software (PLD Download Tool) can be
used.
. The PLD internal data is controlled in the Sony Database
Server under the name Project file (E_xxx_xxx_xx_xx).
. The printed circuit board is equipped with the standard
connector (EPR connector) to write the PLD internal
data. The indication “EPR” is shown on the printed
circuit board.
Data write procedure
Data write procedure in the PLD (or ROM for PLD) is
outlined below.
For details of data write procedure, refer to “Download
Tool Operating Instruction for Device Programming”
which is available in the same site where the PLD Download Tool software is available.
1. Prepare the Project file.
n
Download the Project file from the Sony Database
Server.
2. Turn off the power of this unit. Connect the PC
parallel port to the EPR connector of the target board
using the PLD download fixture (cable).
3. Turn on the power of this unit.
Start the Download Tool software and read the Project
file.
4. Program the PLD (or ROM for PLD) with the Download Tool software.
5. Upon completion of programming, check that error
message is not displayed. Turn off the power of this
unit and back on.
Corresponding PLD
PLD EPR connector Project file No.
(Ref No./board name) (Ref No./board name)
IC106/MPU-124 CN101/ MPU-124 E_000_000_31_xx
Equipment required
. PLD download fixture
(Sony part number: J-7120-140-A)
The cable connected PC to this unit.
. PC
A PC having parallel port.
A PC in which the PLD Download Tool software is
already installed.
For the applicable OS and the operating environment,
refer to “Download Tool Operating Instruction for
Device Programming”.
1-10 (E)
FUNCTION button
MEMORY
MONITOR
FUNCTION
VF DISP
MAINTENANCE
VF MENU
SCENE
CANCEL
PAI NT
ENTER
ALARM
MENU SELECT BRIGHT CONTRAST
MAINTENANCE button
PANEL ACTIVE
button
PAN EL
STANDARD TEST BARS CLOSE
ACTIVE
STICK
SCENE button
STANDARD button
VTR
START/STOP
AWB
WHITE
BLACK
IRIS/MB
AUTO
MASTER
ACTIVE
IRIS
BLACK
EXT
IRIS
REMOTE CONTROL UNIT RM-B750
ABB
RM-B750
1-10. Note on Service
1-10-4. Note on Replacing the FRAM
Initialize the FRAM (IC10, IC11) on the MPU-124 board
as described below after replacing them.
Procedures
1. Press and light the PANEL ACTIVE button.
2. Press the PANEL ACTIVE, STANDARD and FUNCTION buttons simultaneously.
The Diag Mode 2 menu appears.
3. Press the SCENE button. FRAM initialized display
appears.
4. Press [Start] or the SCENE button. Initializing will
start.
FRAM initialized
push SCENE to start
Start Cancel
1-10-5. Checking the Software Version
For checking the software version, follow the procedure
described below.
Procedures
1. Press and light the PANEL ACTIVE button.
2. Press and light the MAINTENANCE button.
The maintenance menu appears.
3. Press [RM|Config] in the maintenance menu. The
display will be switched to the RM Configuration
menu.
4. Press [Security] of the RM configuration menu to
select the Security screen.
5. Press [Engineer] and set the engineer mode. Then
press [Exit] to return to the RM configuration menu.
6. Press [Information] in the RM Configuration menu
and check the software version.
1-10-6. Updating the Software
LCD
5. On completing initializing, the message “FRAM
initialized” appears.
FRAM initialized
FRAM initialized
push SCENE
Exit
LCD
6. Press [Exit] or the SCENE button to leave the menu.
The program can be updated using a memory stick. When
updating is necessary, follow the procedure described
below.
n
Save an updated program in a memory stick in advance.
Procedures
1. Insert the memory stick in which an updated program
is already saved.
2. Press and light the PANEL ACTIVE button.
3. Press the PANEL ACTIVE, STANDARD and FUNCTION buttons simultaneously.
The Diag Mode 2 menu appears.
4. Press [Ver|Up] in the Diag Mode 2 menu. The display
will be switched to the Firmware Update display.
Diag Mode 2
Main BL ON
TP Ver Up
RM-B750
LCD
LCD
Date
Time
1-11 (E)
1-10. Note on Service
5. Press [Main|Update]. Updating will start.
Firmware Update
LCD
Boot
Update
Main
Update
6. On completing updating, the message “COMPLET-
ED” appears.
<FIRMWARE UPDATE 1/2>
ERASING
PROGRAMMING
1-10-7. Touch Panel Calibration
If the display is not put into the appropriate mode, or is not
switched to the appropriate screen when pressing the
parameter on the LCD, calibrate the touch panel as described below.
Tool: Stylus pen (commercially available) or
the stick with thin tip which does not damage the
touch panel.
Procedures
1. Press and light the PANEL ACTIVE button.
2. Press the PANEL ACTIVE, STANDARD and FUNCTION buttons simultaneously.
The Diag Mode 2 menu appears.
3. Press [TP] in the Diag Mode 2 menu.
The display will be switched to the Touch Panel
Calibration display.
(If the display is not switched, press the PAINT
button.)
<FIRMWARE UPDATE 2/2>
COMPLETED
ERASING
PROGRAMMING
LCD
7. Finish updating in either way described below.
. While pressing the PANEL ACTIVE button, press
the STANDARD button within one second to exit
the menu.
. Turn the power of the power supply unit to off, and
then turn on.
Diag Mode 2
Main BL ON
TP Ver Up
LCD
LCD
Date
Time
4. Touch the center of x mark (Portion A) at the left top
on the LCD first, and touch the center of x mark
(Portion B) at the bottom right on the LCD using the
stylus pen.
The display will be switched to the Calibration Check
display.
Portion A
Touch Panel Calibration
1-12 (E)
LCD
Portion B
RM-B750
1-10. Note on Service
5. Touch the center of the x mark (Portion C) at the
center on the Calibration Check display using the
stylus pen.
Calibration Check
Portion C
LCD
6. On completing calibration properly, the message
“Calibration Complete” appears.
7. When the calibration is failed, the message “Retry”
appears and return to the Diag Mode 2 menu after few
seconds.
Perform the steps 3 to 5 again.
8. Press the PANEL ACTIVE and STANDARD buttons
simultaneously to leave the menu.
1-10-8. Diagnosis
The unit is provided with the diagnosis function which can
be used for the self-diagnosis of the knobs on the control
panel by performing the following procedure.
1. Press and light the PANEL ACTIVE button.
2. Press the PANEL ACTIVE, STANDARD and MONITOR buttons simultaneously to the diagnosis mode.
3. For the diagnosis items, perform the operation or the
checking as shown below.
Buttons
Turn off the lit button, and the next button will be lit. Then
turn off the lit button. Repeat this operation in order from
the all buttons.
Indicator, Access lamp
(EXT, MEMORY STICK, ALARM, IRIS/MB ACTIVE)
EXT : LED is flashing from amber.
MEMORY STICK, ALARM :
green → red → amber → off, and
back to green.
IRIS/MB ACTIVE : LED is flashing from green.
FUNCTION button
RM-B750
MONITOR
button
MEMORY
STICK
MONITOR
FUNCTION
VF DISP
MAINTENANCE
VF MENU
SCENE
CANCEL
PAI NT
ENTER
ALARM
MENU SELECT BRIGHT CONTRAST
PANEL ACTIVE
button
PAN EL
STANDARD TEST BARS CLOSE
ACTIVE
PAINT button
STANDARD button
VTR
START/STOP
AWB
WHITE
BLACK
IRIS/MB
AUTO
MASTER
ACTIVE
IRIS
BLACK
EXT
IRIS
REMOTE CONTROL UNIT RM-B750
ABB
1-13 (E)
1-10. Note on Service
Controls, Rotary Encoder
Turn the controls from 01 to 15 in the following table in
order, and check that the followings are satisfied using
Diag Mode 1.
. When turning the control knob, the appropriate VR No.
of this control knob is displayed at the bottom right on
the LCD. Also the adjustment value is displayed in the
appropriate box on the LCD.
(The display position of the VR No is assigned in order
of VR No. 01 and 02 from the upper left on the LCD.)
.
The variable range of the adjustment value which is
displayed by turning the control knob is coincide with the
value of the adjustable range column in the following table.
**
* When turning the WHITE-R control knob (VR No. 5)
**
Adjustment value
Diag Mode 1
0
1-10-9. Circuit Protective Elements
The positive characteristic thermistor (for power supply)
functions as a circuit protective element on the VR-277
board (B side) of the unit shown below. The thermistor
increases the internal resistance and limits the current
flowing to the circuits when an overcurrent flows or when
the ambient temperature increases and the element reaches
the specified temperature.If the elements operates,turn off
the main power and inspect the RM-B750 internal
circuit.After removing the cause of the equipment abnormality and the temperature of the element decreases,turn
on the power again and operare the unit correctly.It takes
about 1 minute for the elements to cool down after the
main power is turned off.
Borad Ref.No. Address Protective circuit/equipment
VR-277 THP203 C-2 Circuit inside the board
THP205 B-2
1-10-10. Unleaded Solder
5
LCD
VR No.
VR No. Adjustment controls Adjustable range
01 Rotary encoder 1
02 Rotary encoder 2
03 Rotary encoder 3
04 Rotary encoder 4
05 WHITE-R _90 (or less) to
06 _ +90 (or more)
07 WHITE-B
08 _
09 BLACK-R
10 _
11 BLACK-B
12 MASTER BLACK control
13 IRIS control
14 _
15 _
*1: The rotary encoder 1 is the left most of the control knob.
*1
*1
*1
*1
_99 to +99
Boards requiring use of unleaded solder are printed with a
lead free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come
printed with the lead free mark due to their particular size.)
: LEAD FREE MARK
m
. Be sure to use the unleaded solder for the printed circuit
board printed with the lead free mark.
. The unleaded solder melts at a temperature about 40 dC
higher than the ordinary solder, therefore, it is recommended to use the soldering iron having a temperature
regulator.
. The ordinary soldering iron can be used but the iron tip
has to be applied to the solder joint for a slightly longer
time. The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful.
4. Press the PANEL ACTIVE and STANDARD buttons
simultaneously to leave the menu.
1-14 (E)
RM-B750
1-11. Recommended Replacement Parts
1-11. Recommended Replacement Parts
The list below shows the recommended replacement parts. Replace them as needed.
No. Part name Sony part number Remarks
1 KNOB, RE 3-635-891-0X Rubber part
2 RUBBER KEY B 3-620-281-0X Rubber part
3 MS LID 3-620-276-0X Rubber part
4 KNOB ASSY,VOLUME CONTROL X-3651-342-X Rubber part
5 WHITE KNOB ASSY X-3608-461-X Rubber part
6 RUBBER KEY A 3-620-280-0X Rubber part
7 BATTERY, LITHIUM CR2032 1-528-174-1X Replace it every 7 years.
*1 : Check that parts are not deformed or deteriorated periodically. Replace them as needed.
*2 : Refer to Section 1-10-1.
1
*1
*1
*1
*1
*1
*1
2
3
4
5
6
RM-B750
7
1-15 (E)
Section 2
Electrical Alignment
2-1. Preparation
Measuring Equipment
. Waveform monitor/Vectorscope Tektronix 1780R (for NTSC)/1781R (for PAL) or equivalent
. Color monitor
Peripheral Equipment
. BVP-E10 + CA-530/570/950, or
HDC-950/930
(The video output should be present at the remote connector.)
. AC adaptor AC-550/550CE, or DC variable power supply
Connection
COLOR VIDEO CAMERA
CAMERA ADAPTOR
BVP-E10 series
CA-570/530 series
REMOTE
*
DC IN
AC ADAPTOR
AC-550/550CE
or DC variable
power supply
REMOTE CABLE
(supplied with
RM-B750,10 m)
*
Micro switch
_
PANEL
STANDARD TEST BARS CLOSE
VTR
ACTIVE
START/STOP
MEMORY
STICK
ABB
AWB
WHITE
MONITOR
FUNCTION
BLACK
VF DISP
MAINTENANCE
VF MENU
SCENE
IRIS/MB
CANCEL
AUTO
MASTER
ACTIVE
IRIS
BLACK
PAINT
EXT
ENTER
IRIS
ALARM
MENU SELECT
REMOTE CONTROL UNIT RM-B750
REMOTE
CONTROL UNIT
RM-B750
14
23
MONITOR
+
Waveform monitor/
Vector scope
A-ch
75 Z
Color monitor
75
PIX
Z
If using a DC variable power supply to drive power, connect the positive (+) side of the power supply to
pin 4 of the DC IN connector on the camera adaptor, and negative (_) side to pin 1.
n
When the power is supplied via the DC IN connector, be sure to press the micro switch on the DC IN
connector, that turns on the power. It is recommended to use an XLR plug when driving power via the
DC IN connector.
Initial settings
. PANEL ACTIVE button/Operation panel : ON (lit)
. Test signal select button/Operation panel : BARS
. CABLE COMP SELECT
*1 : To select the cable length, use the menu of this unit. For details, refer to the operation manual supplied with the unit.
RM-B750
*1
: 10 m
2-1 (E)
2-2. Adjusting the Video Level
2-2. Adjusting the Video Level
Notes
. All measuring equipment shall be calibrated.
. Also the alignment for the camera, camera adaptor and OHB shall be completed.
. About ten-minute warm-up time is allowed before beginning adjustment.
. The waveforms differ according to the specifications (TV standard and encoded level) of a camera
connected to the unit during adjustment.
In this manual, every waveform corresponding to the specifications is given.
Adjustment Procedure
Test Point : MONITOR connector
Adjustment Point : 1RV1/VA-211 board
Specification : A = 1.00 ±0.05 Vp-p (terminated with 75 Z)
(140 ± 7 IRE)
A
(NTSC Setup 0 %)
AB CD
RV1
1
A
(NTSC Setup 7.5 %)
1
2
VA-211 board (A side)
A
(PAL)
2-2 (E)
RM-B750
Section 3
Spare Parts
3-1. Notes on Repair Parts
1. Safety Related Components Warning
w
Components marked ! are critical to safe operation.
Therefore, specified parts should be used in the case of
replacement.
2. Standardization of Parts
Some repair parts supplied by Sony differ from those
used for the unit. These are because of parts commonality and improvement.
Parts list has the present standardized repair parts.
3. Stock of Parts
Parts marked with “o” at SP (Supply Code) column of
the spare parts list may not be stocked. Therefore, the
delivery date will be delayed.
4. Harness
Harnesses with no part number are not registered as
spare parts.
In need of repair, get components shown in the list and
repair using them.
3-1.
RM-B750
3-1
Knob and Board Block
3-2. Exploded Views
84
3
14
12
9
15
13
WASHER,PLASTIC
(4 x 0.5)
1
10
B3 x 5
7
5
10
6
16
2
10
11
3-2
B4 x 6
7
B4 x 6
RM-B750
No. Part No. SP Description
1 A-8345-286-A s MOUNTED CIRCUIT BOARD, VA-211
2 A-8345-288-A s MOUNTED CIRCUIT BOARD, CN-2308
3 X-3608-461-1 s WHITE KNOB ASSY
4 X-3651-342-0 s KNOB ASSY,VOLUME CONTROL
5 1-574-144-11 s WIRE, FLAT TYPE (12 CORE)
6 1-775-422-11 s WIRE,FLAT TYPE(30CORE)
7 3-364-941-01 s SCREW (+B) (2.6X5),NYLOK
8 3-620-276-02 s MS LID
9 3-635-891-02 s KNOB,RE
10 3-687-116-01 o WASHER(4),STOPPER (PLA)
11 3-697-760-11 s SCREW,COIN
12 3-701-444-21 s WASHER PLASTIC 6.2X0.5)
13 3-729-091-01 s SCREW (M4X17.5) (STEEL)
14 A-8279-951-A s KNOB ASSY,RE
15 2-141-015-41 s PLATE,COLOR
16 1-769-629-11 s WIRE,FLAT TYPE (12P)
7-623-925-01 s WASHER,PLASTIC (4X0.5)
7-682-546-04 s SCREW +B3X5
7-682-560-09 s SCREW +B4X6
Knob and Board Block
RM-B750
3-3
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