Sony WLL-CA50 User manual

WIRELESS CAMERA TRANSMITTER
WLL-CA50
MAINTENANCE MANUAL
1st Edition
Serial No. 100001 and Higher: WLL-CA50 (UC)
Serial No. 300001 and Higher: WLL-CA50 (J)
Serial No. 400001 and Higher: WLL-CA50 (CE)

WLL-CA50
!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.
For the customers in the Netherlands
Voor de klanten in Nederland
Hoe u de batterijen moet verwijderen, leest u in de
Gebruikshandleiding.
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.

WLL-CA50
For the customers in the U.S.A. and Canada
RECYCLING NICKEL METAL HYDRIDE
BATTERIES
Nickel Metal Hydride batteries are
recyclable. You can help preserve our
environment by returning your used
rechargeable batteries to the collection
and recycling location nearest you.
For more information regarding recycling of re-
chargeable batteries, call toll free 1-800-822-8837, or
visit http://www.rbrc.org/
Caution: Do not handle damaged or leaking Nickel
Metal Hydride batteries.
For the customers in the U.S.A. and Canada
RECYCLING LITHIUM-ION BATTERIES
Lithium-Ion batteries are recyclable.
You can help preserve our environment
by returning your used rechargeable
batteries to the collection and recycling
location nearest you.
For more information regarding recycling of re-
chargeable batteries, call toll free
1-800-822-8837, or visit http://www.rbrc.org/
Caution: Do not handle damaged or leaking Lithium-Ion
batteries.
1 (P)
For the customers in Japan
For the customers in Japan

1 (E)
WLL-CA50
Table of Contents
Manual Structure
Purpose of this manual ........................................................................................ 5 (E)
Relative manuals ................................................................................................. 5 (E)
Contents ............................................................................................................... 6 (E)
1. Service Overview
1-1. Connector Input/Output Signals............................................................1-1 (E)
1-2. Connection Connector/Cable ................................................................1-2 (E)
1-3. Removing/Reinstalling the Exterior Parts.............................................1-2 (E)
1-4. Board Location......................................................................................1-3 (E)
1-5. Circuit Description ................................................................................1-3 (E)
1-5-1. Video/Audio Signals (DPR-231 Board)...............................1-3 (E)
1-5-2. System Control (IF-914 Board) ..........................................1-4 (E)
1-5-3. Power Supply Block (PS-645 Board) ..................................1-4 (E)
1-6. Setting of Internal Switches ..................................................................1-5 (E)
1-7. Flexible Card Wire ................................................................................1-5 (E)
1-7-1. Removing/Reinstalling the Flexible Card Wires .................1-5 (E)
1-7-2. Forming the Flexible Card Wire ..........................................1-6 (E)
1-8. Removing/Reinstalling the PS-645 board and Transmitter ..................1-6 (E)
1-9. Removing/Reinstalling the 40-pin Connector.......................................1-9 (E)
1-10. Notes on Replacement of V Shoe .......................................................1-10 (E)
1-11. Settings after Replacing the Boards and EL Display ..........................1-10 (E)
1-12. Writing and Rewriting the PLD Internal Data ....................................1-11 (E)
1-13. Updating the Software.........................................................................1-12 (E)
1-14. Setting of Serial Number.....................................................................1-13 (E)
1-15. Resetting the Timer .............................................................................1-14 (E)
1-16. Optional Fixtures.................................................................................1-15 (E)
1-17. Note on Service ...................................................................................1-16 (E)
1-17-1. Error Message ....................................................................1-16 (E)
1-17-2. Notes on RF OUT Connector.............................................1-16 (E)
1-17-3. Note on Replacing the EL Display.....................................1-16 (E)
1-17-4. Circuit Protection Device ...................................................1-16 (E)
1-17-5. Notes on Disconnecting/Connecting the Coaxial Cable ....1-17 (E)
1-17-6. Unleaded Solder .................................................................1-17 (E)
1-17-7. Notes on Repair Parts .........................................................1-17 (E)

2 (E) WLL-CA50
2. Electrical Alignment
2-1. Preparation ............................................................................................2-1 (E)
2-1-1. Equipment Required.............................................................2-1 (E)
2-1-2. Notes on Adjustments ..........................................................2-1 (E)
2-2. Free-run Adjustment .............................................................................2-1 (E)
3. Spare Parts
3-1. Exploded Views ..........................................................................................3-1
3-2. Electrical Parts List .....................................................................................3-4
3-3. Frame List .................................................................................................3-16
3-4. Supplied Accessories ................................................................................3-17
3-5. Tools and Fixtures.....................................................................................3-17
4. Semiconductor Pin Assignments
5. Block Diagrams
Overall.........................................................................................................5-1
DPR-231......................................................................................................5-2
IF-914 ..........................................................................................................5-3
PS-645 .........................................................................................................5-4
6. Schematic Diagrams
DPR-231......................................................................................................6-2
IF-914 ..........................................................................................................6-9
MB-998 .....................................................................................................6-13
PS-645 .......................................................................................................6-14
DC-124 ......................................................................................................6-16
SW-1128 ...................................................................................................6-17
SW-1129 ...................................................................................................6-18
SW-1130 ...................................................................................................6-18
Frame.........................................................................................................6-19

3 (E)
WLL-CA50
7. Board Layouts
DPR-231......................................................................................................7-2
IF-914 ..........................................................................................................7-3
DC-124 ........................................................................................................7-4
PS-645 .........................................................................................................7-4
MB-998 .......................................................................................................7-5
SW-1128 .....................................................................................................7-5
SW-1129 .....................................................................................................7-5
SW-1130 .....................................................................................................7-5

5 (E)
WLL-CA50
Manual Structure
Purpose of this manual This manual is the maintenance manual for Wireless Camera Transmitter WLL-CA50.
This manual is intended for use by the trained system enginneers and service
enginneers, and describes information (service overview, electrical alignment, 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: 3-742-686-XX
..
..
.CD-ROM Manual (Supplied with this unit)
This manual contains the Japanese, English, French, German, Italian, and Spanish
operation manuals (PDF) of WLL-CA50.
Part number: 3-748-115-XX
..
..
.“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

6 (E) WLL-CA50
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
Describes electrical adjustment necessary for maintenance of the unit.
Section 3 Spare Parts
Contains 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 Diagrams
Contains the block diagrams of overall and each circuit board.
Section 6 Schematic Diagrams
Contains schematic diagrams for every circuit board and frame wiring.
Section 7 Board Layouts
Contains board layouts for every circuit board.

1-1 (E)
WLL-CA50
Section 1
Service Overview
BATT OUT (5P FEMALE)
No. Signal Specifications
1 UNREG GND GND for UNREG OUT
2 BATT ID DET
3 BATT REW
4 LIGHT CONT
5 UNREG OUT DC 10.5 to 17 V
BNC connector
SPARE (SDI IN)
Serial digital interface, 270 Mbps
1234
(External view)
(External view)
14
23
(External view)
12345
(External view)
12345
1-1. Connector Input/Output Signals
DC IN (4P MALE)
No. Signal Specifications
1 UNREG GND GND for UNREG IN
2NC
3NC
4 UNREG IN DC 10.5 to 17 V
DC OUT 12V (4P FEMALE)
No. Signal Specifications
1 UNREG GND GND for UNREG +12 V
2NC
3NC
4 UNREG +12 V DC 10.5 to 17 V
BATT IN (5P MALE)
No. Signal Specifications
1 BATTERY GND GND for BATTERY IN
2 BATT ID DET
3 BATT REW
4 LIGHT CONT
5 BATTERY IN DC 10.5 to 17 V

1-2 (E) WLL-CA50
1-2. Connection Connector/Cable
Connection made with the connector panels during instal-
lation or service, should made with the connectors or
complete cable assemblies specified in the following list,
or equivalent parts.
n
Be sure to connect the supplied special antenna to the RF
OUT connector.
Never connect any other antenna or plug to the RF OUT
connector. (Refer to Section 1-17-2.)
Connector Name Connection Connector/Cable
DC IN 1-508-362-00 XLR, 4P FEMALE
DC OUT 1-566-425-11 ROUND TYPE, 4P MALE
SPARE (SDI IN) 1-569-370-12 PLUG, BNC or Coaxial
cable BELDEN 8281 or equivalent
1-3. Removing/Reinstalling the Exterior
Parts
Tool : Special screwdriver (T10)
(Sony Part No.: 3-985-911-01)
1. Loosen the six special screws with stopper using the
special screwdriver (T10), and open the R panel
assembly and L panel assembly.
2. Disconnect the cord with connector from the transmit-
ter.
3. Disconnect the coaxial cable from the connector CN7
on the MB-998 board, and remove the L panel assem-
bly.
n
When disconnecting the coaxial cable, do not attempt
to remove by pulling the cable. Be sure to hold the
plug to remove.
4. Disconnect the flexible card wire from the connector
CN1 on the SW-1128 board, and remove the R panel
assembly.
n
Be careful not to bend the flexible card wires. This
shortens the wire life.
5. Reassemble the exterior parts in the reverse order of
removal.
n
When closing each panel assembly, make sure the
harnesses or coaxial cables are not caught between the
chassis and each panel assembly.
Special screws with stopper
Special screw with stopper
R panel assembly
L panel assembly
Special screws
with stopper
Special screw
with stopper
SW-1128 board
MB-998 board
Transmitter
R panel
assembly
L panel assembly
Cord with connector
CN1
CN7
Hold the plug to
remove.
OK Do not atempt to
remove by pulling
the cable.
NG

1-3 (E)
WLL-CA50
IF-914 board
PS-645 board
SW-1128 board
SW-1129 board
SW-1130 board
DPR-231 board
DC-124 board
MB-998 board
1-4. Board Location 1-5. Circuit Description
1-5-1. Video/Audio Signals (DPR-231 Board)
The video and audio signals input at the 40-pin interface of
the camcorder are input to the FPGA (IC200) on the DPR-
231 board through the input buffers (IC1, 2, 3) on the MB-
998 board.
.Video signal: D1 digital data of 10-bit parallel
.Audio signal: Serial digital data of CH 1&2 and
CH 3&4
The following signals for the timing controls of the video/
audio signals are also input at the 40-pin interface of the
camcorder:
.For video signal: CAM CK27, CA CF, CA HD, CA VD,
CA SYNC
.For audio signal: CA FSO, CA 64 FSC
The video signal to be input to the FPGA is selected from
the following two signals by the output enable controllers
consisting of IC2 and IC3, or IC105 and IC106.:
.Video signal from the camcorder
.SDI signal input to the SPARE connector
Selection is made as follows:
When the UNREG +12 V input from the 40-pin interface
of the camcorder is detected, the video signal from the
camcorder is selected. When the camcorder is powered off,
that is, the UNREG +12 V is not detected, the SDI signal
is selected.
The TRS (Timing Reference Signal) based on the sync
signals (CA CF, CA HD, CA VD) is added to the 10-bit
digital video signal input to the FPGA. Then, in accor-
dance with the MPEG encoder, the high 8 bits are input to
the MPEG encoder module.
The audio signal is selected from the following signals in
the FPGA:
.Audio signal from the camcorder
.Audio signal in the SDI signal input at the SPARE
connector
The audio signal in the SDI signal is separated from the
digital video signal input to the FPGA. Like the video
signal, the selection of the audio signal is depending on the
UNREG +12 V input to the 40-pin interface. When the
UNREG +12 V is detected, the CH 1&2 of the CH 1&2
and CH 3 & 4 digital audio signals is output from the
FPGA, and is input to the MPEG encoder module. When
the UNREG +12 V is not detected, the CH 1&2 digital
audio signal of the group 1 in the SDI signal is input to the
MPEG encoder module.

1-4 (E) WLL-CA50
The connecter CN101 on the IF-914 board is used for the
upgrade of the control program.
When the ROM board that the program is saved in is
connected to CN101, the microcomputer reads the data and
sends it to the flash memory (IC105).
1-5-3. Power Supply Block (PS-645 Board)
The power of the WLL-CA50 is supplied from the follow-
ing connectors. When a connector is externally inserted
into the DC IN connector, the DC IN is automatically
selected.
.DC IN connector (XLR 4-pin)
.BATT IN connector (5-pin)
The selected power is called the UNREG in the unit. The
UNREG is supplied to the WILL-CA50 as well as to the
camcorder through the BATT OUT connector.
Q10 on the PS-645 board turns On/Off the UNREG to be
supplied to the WLL-CA50. Q10 is controlled by the DC
LINE switch.
The UNREG through Q10 is sent to the following voltag-
es:
.DC OUT connector
.+3.3 V/+2.5 V regulator
.+5 V/+1.8 V regulator
.+9 V/_5 V regulator
Following the +3.3 V regulator, other regulators are
designed to start up.
These regulator outputs are supplied to each part of the
unit.
The PS-645 board contains the transmitter.
The transmitter receives the power and the control signal at
the Wn traces on the PS-645 board.
The signal of the transmitter is input from the MB-998
board to the transmitter through the coaxial cable, and is
output from the N-type connector to the antenna.
In the MPEG encoder module, the video/audio signals are
converted into the compressed data, and it is multiplexed
and input again to the FPGA as the MPEG stream.
The Wireless ID is added to this MPEG stream, and the
MPEG stream is input to the OFDM modulating device
(IC307) and modulated to the OFDM (Orthogonal Fre-
quency Division Multiplexing) signal.
The OFDM signal is input to the transmitter as the IF
signal of 9.14 MHz whose band is restricted in BPF
(IC401, 402). Then, the signal is upconverted into the set
frequency (2.4 GHz band), and is sent with the nondirec-
tional antenna.
1-5-2. System Control (IF-914 Board)
The 32-bit microcomputer (IC101) on the IF-914 board
controls the WLL-CA50 system. The program of the
microcomputer is stored in the 16-bit flash memory
(IC105) and two 1M-bit SRAMs (IC109, 110) are used as
the work memories. The NV RAM (IC112) backs up the
unit settings just before the unit is powered off.
The camcorder performs the serial communication with the
microcomputer on the IF-914 board through the 40-pin
interface. The signal level from the camcorder to the
microcomputer is 0 to +2.5 V, and the signal level from
the microcomputer to the camera is +2.5 ±5 V. By this
communication, the output direction of the video/audio
signals in the 40-pin interface, the confirmation for the
video format (NTSC/PAL) of the camcorder, the periodical
checks of the camcorder operations (VTR stop/PB/REC)
are performed.
The microcomputer performs the following controls for the
parts in the unit.
For the FPGA (IC200/DPR-231 Board), sets the video
format (NTSC/PAL) and the Wireless ID.
For the MPEG encoder module, sets parameters such as
the encode rate.
For the OFDM modulating device (IC307/DPR-231
Board), sets the modulation method and CW (single tone
without modulating) output.
For the transmitter, sets the output level and the frequency
(For CE and J models: 2406 to 2478 MHz. For UC model:
2406 to 2470 MHz), and detects the abnormality such as
the PLL unlock of the transmitter.
For the EL display unit, sends the character information.
For the rotary encoder for selecting menu, checks the
rotating direction and the number of rotation.

1-5 (E)
WLL-CA50
1-6. Setting of Internal Switches
m
.Setting the switch S2 on the MB-998 board to the other
destinations is prohibited by the law related to the
electric wave.
Never set the switches to the other destinations printed
on the model number label of the unit.
.Other switches described in the following are factory
use. Never change the settings of the factory use switch-
es.
MB-998 board
MB-998 BOARD (B SIDE)
Ref. No. Name Description Factory setting
S1 Factory use 3, 6 pin side
S2-1 Setting the destination*1*1
S2-2 n
Be sure to set this switch
after replacing the MB-998
board.
S2-3 Factory use OFF
S2-4
*1 :
Ref. No. Destination
J UC CE Reserved
S2-1 ON OFF ON OFF
S2-2 ON ON OFF OFF
S1
S2
ABC
D1
2
1-7. Flexible Card Wire
n
Be careful not to bend the flexible card wires. This short-
ens the wire life.
1-7-1. Removing/Reinstalling the Flexible
Card Wires
Removal
1. Open the connector latch in the direction of arrow A to
release the lock.
2. Remove the flexible card wire in the direction of arrow
B.
Reinstallation
1. Hold the flexible card wire with its insulated surface
(blue) facing upward, and insert it in the direction of
arrow A.
2. Close the connector latch in the direction of arrow B to
lock it.
Connector latch
Connector Flexible card wire
A
B
A
B
Connector latch Connector
Flexible card wire
Insulated surface (Blue)

1-6 (E) WLL-CA50
IF-914 board
DPR-231 board
1-7-2. Forming the Flexible Card Wire
If using a new flexible card wire, hand form as shown in
the figure in advance.
n
Never reform the flexible card wire after being folded
once.
SW-1128 board CN2 55
55
5EL display
15 mm
25 mm
EL display
SW-1128 board
(CN2)
Insulated surface (Blue)
Insulated
surface (Blue)
1-8. Removing/Reinstalling the PS-645
board and Transmitter
1. Remove the exterior parts. (Refer to Section 1-3.)
2. Pull out the DPR-231 board and IF-914 board.

1-7 (E)
WLL-CA50
MB-998 board
CN8
CN3
CN11
CN11
CN3
Harness (CAMERA) P2 x3
OK
NG
Hold the plug to
remove.
Do not atempt to
remove by pulling
the cable.
Wiring clamp
PS-645 board
CN1
CN2
CN4
M2 x4.5
M2 x4.5
Spacer
3. Lift up the wiring clamp on the MB-998 board to
unfasten the harness and coaxial cable.
4. Remove the screw, and disconnect the harness (CAM-
ERA) from the connector CN3 on the MB-998 board.
5. Disconnect the flexible card wire from the connector
CN11 and coaxial cable from the connector CN8 on
the MB-998 board.
m
.Be careful not to bend the flexible card wires. This
shortens the wire life.
.When disconnecting the coaxial cable, do not
attempt to remove by pulling the cable. Be sure to
hold the plug to remove.
6. Disconnect the harnesses from the connectors CN1,
CN2, and CN4 on the PS-645 board.
7. Remove the three screws, and remove the spacer.

1-8 (E) WLL-CA50
8. Disconnect the harness from the connector CN5 on the
PS-645 board.
9. Remove the four screws, and remove the TR assembly
in the arrow direction.
10. Disconnect the coaxial cable from the coaxial connec-
tor on the transmitter.
n
When disconnecting the coaxial cable, do not attempt
to remove by pulling the cable. Be sure to hold the
plug to remove.
11. Disconnect the flexible card wire from the connector
CN6 on the PS-645 board.
n
Be careful not to bend the flexible card wires. This
shortens the wire life.
CN5
P2.6 x4
P2.6 x4
PS-645 board
TR assembly
PS-645 board
CN6
Transmitter
Hold the plug to
remove.
OK Do not atempt to
remove by pulling
the cable.
NG

1-9 (E)
WLL-CA50
12. Remove the five screws, and remove the PS-645 board
from the heat sink (PS).
13. Unsolder the transmitter from the PS-645 board.
14. Remove the cool sheet PS from the transmitter.
15. Reassemble the PS-645 board and transmitter in the
reverse order of removal.
n
When connecting the coaxial cable, hold the plug and
connect the coaxial cable to the connector vertically.
Press the plug into the connector by small turning to
the left and the right.
Connecting connector
Hold the plug to connect
Heat sink (PS)
Cool sheet (PS)
PS-645 board
Transmitter
Unsolder
Unsolder
PSW3 x6
PSW3 x6
P2.6 x6 P2.6 x6
40-Pin bracket
Sheet (40P)
Camber
Stepped
screws
40-pin connector
40 spots
Harness
(CAMERA)
1-9. Removing/Reinstalling the 40-pin
Connector
1. Remove the two stepped screws, and remove the sheet
(40P).
2. Remove the six screws and remove the 40-pin bracket.
3. Unsolder the harness (CAMERA), and remove the 40-
pin connector.

1-10 (E) WLL-CA50
4. Solder the new 40-pin connector to the harness
(CAMERA).
5. Attach the new 40-pin connector in the reverse order
of removal.
n
When attaching the sheet (40P), check to see that its
camber is oriented to the 40-pin bracket.
6. Check that the 40-pin connector moves by hand.
40-pin connector
40-Pin bracket
Sheet (40P)
Camber
Stepped
screws
1-10. Notes on Replacement of V Shoe
The installing position of V shoe influences the precisely
position when installing the unit to the camcorder. Tighten
the three screws sequentially in accondance with the figure
when installing the V shoe on the main chassis. When the
V shoe is replaced, check that the specification is met.
Specification: a _b = 0 ±0.1 mm
1-11. Settings after Replacing the Boards
and EL Display
When the following boards and the EL display are re-
placed, implement the specified settings referring to the
following Section.
For other boards described in the following do not require
setting when they are replaced.
Board name Setting (Section to be referred to)
IF-914 board Serial No setting (Section 1-14)
MB-998 board Setting S2-1 and S2-2 on the MB-998 board
(Section 1-6)
EL display Timer reset (Section 1-15)
ab
132