Sony RM-B750 User manual

REMOTE CONTROL UNIT
RM-B750
MAINTENANCE MANUAL
1st Edition (Revised 1)
Serial No. 100001 and Higher

RM-B750
!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 1 (P)
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.

RM-B750
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)
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).

1 (E)
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)
2. Electrical Alignment
2-1. Preparation ............................................................................................ 2-1 (E)
2-2. Adjusting the Video Level .................................................................... 2-2 (E)

2 (E) RM-B750
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
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

3 (E)
RM-B750
Manual Structure
Purpose of this manual
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 engin-
neers, and describes information (service overview, parts lists, schematic diagram
and board layout) on the premise of component level service.
Relative manuals
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

4 (E) RM-B750
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.

1-1 (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. Connection Connector/Cable
Connection made with the connector panels during instal-
lation 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)
(External View)
17
6
4
8
5
2
3
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.
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.
RM connector cover
Screw
(with drop-safe)
Operation panel assembly
Bottom cover
Screws
(with drop-safe)
Screws
(with drop-safe)

1-2 (E) RM-B750
1-5. Functions of Internal Switches
MPU-124 Board
.S201
This switch is not used.
Factory-setting: OFF
.S205 (BUZZER ON/OFF)*1
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
1-4. Board Layouts
VR-277 board
CN-2278 board
LED-385 board
LED-389 board
MPU-124 board
CN-2308 board
VA-211 board
LCD unit
1-4. Board Layouts
1-5. Functions of Internal Switches
S206
S201
S205
12 3
A
B
C
*1
MPU-124 board (A side)

1-3 (E)
RM-B750
1-6. Flexible Card Wire
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.
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 connec-
tor 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.)
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

1-4 (E) RM-B750
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 installa-
tion into connector.
n
Never re-stretch the flexible card wire that has been folded
once, to the original shape.
Between CN-2278 board CN2 5VR-277 board CN2
3 mm
11 mm
11 mm
7 mm
VR-277 board (CN2) side
CN-2278 board (CN2) side
Contacting
surface
Contacting
surface Insulated surface (blue)
About 28 mm
View from
the top
View from
the side
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.
Connecting (Type E)
Insert the flexible card wire with the isolation surface
(blue) facing up and close the portion A.
Portion A
Connector
Type E
Flexible card wire
Isolation surface
(blue)
Portion A
Type E
Isolation surface
(blue)

1-5 (E)
RM-B750
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.
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.
RE knob
WHITE knob assemblies
Washer
IRIS control assembly
Operation
panel assembly
MPU-124 board
(CN104)
MPU-124 board
(CN201)
B3 x5
Flexible card wires
1-7. Replacing the LCD Unit
7. Remove the three screws and the RM shield assembly.
8. Remove the two screws and the PWB (BKP) stopper.
RM shield assembly
PWB
(BKP) stopper
B2.6 x5
B2.6 x5
B2.6 x5
B2.6 x5

1-6 (E) RM-B750
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
VR-277 board
B2.6 x5
CN3
CN6
CN2
CN4
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.
PWB holders
PWB holder MPU-124 board
MPU-124
board
Fig.1
B2.6 x5
Long nose pliers

1-7 (E)
RM-B750
13. Remove the two screws and the CN-2278 board.
14. Remove the screws (B2.6 x5 : 3 pcs, PS2.6 x5 : 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 protec-
tion sheet before installation.
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.
CN-2278 board
LCD unit
B2.6 x5
B2.6 x5
Touch panel of LCD unit
Protection
sheet
PS2.6 x5
1-7. Replacing the LCD Unit
1-8. Replacing the Touch Panel and Backlight
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 short-
ened if it is folded. Be very careful not to fold the
flexible card wire.
LCD unit board
CN6
CN3
CN2
CN5

1-8 (E) RM-B750
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.
Shaft of IRIS control knob
Mark on the operation
panel
Mark on the operation panel
White mark
IRIS control knob assembly
IRIS knob assembly
Fig. 1
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.
5. When installing the LCD unit in the RM-B750, reverse
the steps in Section 1-7.
Touch panel
Touch panel
Back light
LCD unit board
Precision
P1.7 x2.5
Precision
P1.7 x2.5
Precision
P1.7 x2.5
Protection
sheet

1-9 (E)
RM-B750
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
Mark on the
operation panel
White mark
Shaft of the WHITE knob
1-9. Installing the IRIS Knob Assembly and WHITE Knob Assembly
1-10. Note on Service
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
Memory Stick
in this unit
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.
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.

1-10 (E) RM-B750
MONITOR
FUNCTION
VF DISP
MAINTENANCE
VF MENU
SCENE
CANCEL
PA I N T
ENTER
ALARM
PA N E L
ACTIVE
MEMORY
STICK
STANDARD TEST BARS CLOSE
AWB
AUTO
IRIS
IRIS/MB
ACTIVE MASTER
BLACK
REMOTE CONTROL UNIT RM-B750
EXT
IRIS
WHITE
BLACK
ABB
VTR
START/STOP
PANEL ACTIVE
button
FUNCTION button
MAINTENANCE button SCENE button
STANDARD button
MENU SELECT BRIGHT CONTRAST
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 Down-
load 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 Down-
load Tool software.
5. Upon completion of programming, check that error
message is not displayed. Turn off the power of this
unit and back on.
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.
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”.

1-11 (E)
RM-B750
Diag Mode 2
Main BL ON
TP Ver Up
LCD Date
Time
LCD
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
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 FUNC-
TION 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.
1-10. Note on Service
LCD
FRAM initialized
FRAM initialized
push SCENE
Exit
FRAM initialized
push SCENE to start
Start Cancel
LCD
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 FUNC-
TION 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.
5. On completing initializing, the message “FRAM
initialized”appears.
6. Press [Exit] or the SCENE button to leave the menu.

1-12 (E) RM-B750
Touch Panel Calibration
LCD
Portion A
Portion B
Diag Mode 2
Main BL ON
TP Ver Up
LCD Date
Time
LCD
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 de-
scribed 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 FUNC-
TION 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.)
4. Touch the center of xmark (Portion A) at the left top
on the LCD first, and touch the center of xmark
(Portion B) at the bottom right on the LCD using the
stylus pen.
The display will be switched to the Calibration Check
display.
1-10. Note on Service
<FIRMWARE UPDATE 1/2>
ERASING
PROGRAMMING
<FIRMWARE UPDATE 2/2>
ERASING
COMPLETED
PROGRAMMING
LCD
Firmware Update
Boot
Update
Main
Update
LCD
5. Press [Main|Update]. Updating will start.
6. On completing updating, the message “COMPLET-
ED”appears.
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.