Aloka SSD-4000 User manual

Service Manual
SSD-4000

FILE 1
SERVICE MANUAL
PRO SOUND
SSD - 4000
1 / 2
English Edition
Document Number :MN2-0233
Document Revision :3
Copyright©

MN2‑0233 Rev.3
SSD-4000 SERVICE MANUAL
1/6
Contents of SSD-4000 SERVICE MANUAL 1/2
PAGE
Section 1How to use this service manual page 1-1〜1-4 (4 pages)
1-1 Service Manual ‥‥‥‥ ‥‥‥‥ 1- 1
1-2 Contents of this Service Manual ‥‥‥‥ ‥‥‥‥ 1- 1
1-3 Construction of This Service Manual ‥‥‥‥ ‥‥‥‥ 1- 2
1-4 Contents of Each Section ‥‥‥‥ ‥‥‥‥ 1- 2
Section 2PRECAUTIONS (read without fail) page 2-1〜2-6(6pages)
2-1 Precautions Against Electrical Hazards to Serviceman ‥‥‥‥ 2- 1
2-2 Precautions Against Mechanical Hazards to Serviceman ‥‥‥‥ 2- 1
2-3 Precautions Against Germ Hazards to Serviceman ‥‥‥‥ 2- 1
2-4 Precautions for Keeping Electrical Safety ‥‥‥‥ 2- 2
2-5 Precautions for Keeping Mechanical Safety ‥‥‥‥ ‥‥‥‥ 2- 2
2-6 Precautions for Keeping Chemicals Safety ‥‥‥‥ ‥‥‥‥ 2- 2
2-7 Preparation to be Made at Service Center ‥‥‥‥ ‥‥‥‥ 2- 2
2-8 Care to be Taken in the Field ‥‥‥‥ ‥‥‥‥ 2- 3
2-9Precaution for Monitor repairing ‥‥‥‥ ‥‥‥‥ 2- 3
2-10Handling of S.M.D. PCBs ‥‥‥‥ ‥‥‥‥ 2- 4
2-11System Symbols ‥‥‥‥ ‥‥‥‥ 2- 5
2-12A combination of UCW-4000B and software version ‥‥‥‥ 2- 6
2-13A combination of SCU-4000/4000B and
AD_DA “EP444400”/DBP “EP478400”board ‥‥‥‥ 2- 6
Section 3BEFORE REPAIRING page 3-1〜3-14 (14 pages)
3-1 Repair work on the description of Service Manual ‥‥‥‥ 3- 1
3-2 Upgrade work on the description of Service Manual ‥‥‥‥ 3- 6
3-3 Messages ‥‥‥‥ ‥‥‥‥ 3- 12
Section 4PRINCIPLE OF SYTSTEM OPERATION page 4-1〜4-104 (120 pages)
4-1 System Specification ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 1
4-2 System Configuration ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 9
4-3 System Block Diagram ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 9
4-4 Principle of System Operation ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 15
4-4-1 System Control ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 15

MN2‑0233 Rev.3
SSD-4000 SERVICE MANUAL
2/6
4-4-2 Transmission and Reception block ‥‥‥‥ ‥‥‥‥ 4- 18
4-4-3 Digital Imaging Unit ‥‥‥‥ ‥‥‥‥ 4- 23
4-4-4 Physio. signal display unit PEU-4000 (Option) ‥‥‥‥ 4- 29
4-4-5 Power supply unit PSU-S4000 ‥‥‥‥ ‥‥‥‥ 4- 30
4-5 Principle of PCB operation ‥‥‥‥ ‥‥‥‥ 4- 34
4-5-1 Probe Selector 1 ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 31
4-5-2 Probe Selector 2 ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 34
4-5-3 Tx & Tx Focus ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 36
4-5-4 Pre AMP & Variable Gain AMP ‥‥‥‥ ‥‥‥‥ 4- 38
4-5-5 Rx Beam Former ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 40
4-5-6 Tx Rx Control ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 44
4-5-7 A ITF ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 48
4-5-8 AD_DA ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 52
4-5-9 CFP ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 54
4-5-10 SDP ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 56
4-5-11 STCW ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 58
4-5-12 BSC ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 60
4-5-13 CSC ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 64
4-5-14VPU ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 68
4-5-15MGR ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 72
4-5-16CPU ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 74
4-5-17Audio ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 78
4-5-18 PSC ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 80
4-5-19 Physio. AMP ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 84
4-5-20 VOL/Servo Control ‥‥‥‥ ‥‥‥‥ 4- 88
4-5-21 Mecha. Connector ‥‥‥‥ ‥‥‥‥ 4- 90
4-5-22 VCM (Video Cine Memory) ‥‥‥‥ ‥‥‥‥ 4- 92
4-5-23 Tx & Tx Focus 2 ‥‥‥‥ ‥‥‥‥ 4- 94
4-5-24 CMB ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 96
4-5-25 DBP ‥‥‥‥ ‥‥‥‥ ‥‥‥‥ 4- 102
Section 5SCHEMATICS page 5-1〜5-162 (162 pages)
Main Body
CABLE CONNECTION SSD-4000 ‥‥‥‥ 5- 1
CABLE 001, 002, 011, 012, 020, 250, 100, 201, 301, 302 ‥‥‥‥ 5- 3
CABLE 021, 400 ‥‥‥‥ 5- 13
Mother EP4445 ‥‥‥‥ 5- 15
Power Supply Unit PSU-S4000 ‥‥‥‥ 5- 25

MN2‑0233 Rev.3
SSD-4000 SERVICE MANUAL
3/6
Transformer Unit (Primary) PSU-S4000-1 ‥‥‥‥ 5- 26
Power Supply unit (Secondly) PSU-S4000-2 ‥‥‥‥ 5- 27
Relay circuit unit EP4482 ‥‥‥‥ 5- 28
Connector Junction unit EP4495 ‥‥‥‥ 5- 29
Mother board EP4486 ‥‥‥‥ 5- 30
Low voltage circuit (1) EP4483 ‥‥‥‥ 5- 31
Low voltage circuit (2) EP4484 ‥‥‥‥ 5- 32
High voltage circuit EP4485 ‥‥‥‥ 5- 33
AC power cable unit（100~120V）JB-258 ‥‥‥‥ 5- 36
AC power cable unit（200~240V）JB-259 ‥‥‥‥ 5- 37
AC Outlet Box (100-120V) JB-260 ‥‥‥‥ 5- 38
AC Outlet Box (200-240V) JB-261 ‥‥‥‥ 5- 39
Foot SW PCB EP4261 ‥‥‥‥ 5- 40
DISTRIBUTOR EP4472 ‥‥‥‥ 5- 41
Physio Signal display unit PEU-4000
PHYSIO UNIT EU-5044 ‥‥‥‥ 5- 46
Physio. Volume unit EP4536 ‥‥‥‥ 5- 47
CABLE 710, 711, 712 ‥‥‥‥ 5- 48
Operation Panel L-KEY-75 ‥‥‥‥ 5- 51
Viewing Color TV monitor IPC-1530Q ‥‥‥‥ 5- 69
Power supply unit PSU-S4000B ‥‥‥‥ 5- 81
Transformer unit circuit PSU-S4000B-1‥‥‥‥ 5- 83
Power supply unit (2) PSU-S4000B-2‥‥‥‥ 5- 85
Hi-Voltage circuit EP440701 ‥‥‥‥ 5- 87
Rectification circuit EP4622 ‥‥‥‥ 5- 88
Power supply circuit EP4631 ‥‥‥‥ 5- 89
Power supply circuit EP4632 ‥‥‥‥ 5- 90
Mother board for PSU-S4000B-2 EP4633 ‥‥‥‥ 5- 93
Output connector circuit EP4634 ‥‥‥‥ 5- 94
Power Supply Unit (Block diagram) PSU-S4000B ‥‥‥‥ 5- 95
Power Supply Unit (Wiring diagram) PSU-S4000B ‥‥‥‥ 5- 96
Power Supply Unit (2) PSU-S4000B-2B‥‥‥‥ 5- 97
Power Supply Unit (2) (Wiring diagram) PSU-S4000B-2B‥‥‥‥ 5- 98
High Voltage CircuitEP463200CC ‥‥‥‥ 5- 99
Mother board for PSU-S4000B-2 EP4633 ‥‥‥‥ 5- 103
Foot switch PCB EP4732 ‥‥‥‥ 5- 104
Mother board EP4812 ‥‥‥‥ 5- 105
Viewing Monitor IPC-1530U DWU-135B ‥‥‥‥ 5- 112

MN2‑0233 Rev.3
SSD-4000 SERVICE MANUAL
4/6
Viewing Monitor IPC-1530U DWU-141 ‥‥‥‥ 5- 129
Power Supply Unit (2) PSU-S4000B-2B‥‥‥‥ 5- 147
Mother board for PSU-S4000B-2B EP4633 ‥‥‥‥ 5- 148
Operation Panel L-KEY-75C ‥‥‥‥ 5- 149

MN2‑0233 Rev.3
SSD-4000 SERVICE MANUAL
5/6
Contents of SSD-4000 SERVICE MANUAL 2/2
Section 6TROUBLESHOOTING
Section 7ADJUSTMENT PROCEDURE
Section 8PERFORMANCE CHECK
Section 9DISASSEMBLING PROCEDURE
Section 10 PARTS LIST
Section 11 SERVICE INFORMATION
Appendix SSD-4000 SERVICE MANUAL Appendix

MN2‑0233 Rev.3
SSD-4000 SERVICE MANUAL
6/6
(Blank page)

SECTION 1
SECTION 1
How to use this service manual

MN2‑0233 Rev.2
SECTION 1 How to use this service manual
1 ‑ 1
1-1 Service Manual
1) This service manual has been prepared for persons in charge of repair at the field.
2) This service manual is compiled according to the following basic principle.For service, pick
out a faulty PCB and replace it with a new PCB .”
3) Make the best use of this service manual, making also reference to available technical support
information such as Technical Bulletin”.
1-2 Contents of this Service Manual
1) The equipment is repaired by PCB replacement. Therefore this service manual does not
include the circuit diagrams of the PCB unit. For the function of each PCBs whose circuit
diagram is not included, refer toSECTION 4 PRINCIPLE OF SYSTEM OPERATION”.
In “SECTION 4”, Specification of System, Principle of System, System Block Diagram, PCB
Block Diagram, the explanation of each PCB Block Diagram, and signal list are described.
However, Cable Connection Diagram”, Circuit Diagram of PCB equipped with the panel
switches which are easily exchangeable at the field”andCircuit Diagram composed of
general circuit such as TV monitor and Power Supply unit”are described inSECTION 5
SCHEMATICS”.
2) For changes and modifications of as well as additions to specifications, if any, prompt
information will be given to you by means ofAPPENDIX Manual Change Information”.
●IMPORTANT●Always observe the manner specified for replacement, addition, or
deletion of Manual Changeto prevent missing of necessary
information and keeping of erroneous information.

MN2‑0233
SECTION 1 How to use this service manual
1 ‑ 2
1-3 Construction of This Service Manual
The structure of Service Manual is as follows:
1) Service Instructions ........................................................SECTION 1〜3, 5〜9, 11
2) Principle of Operation......................................................SECTION 4
3) Parts List.......................................................................SECTION 10
4) Manual Change Information.............................................APPENDIX
1-4 Contents of Each Section
SECTION 1How to use this service manual
Describes the purpose of the Service Manual.
SECTION 2PRECAUTIONS
Describes general precautions and preparations for maintenance service. Be sure to follow
working procedures if mentioned.
SECTION 3BEFORE REPAIRING
Gives information peculiar to the equipment and care to be taken before starting repair work.
SECTION 4PRINCIPLE OF SYSTEM OPERATION
Describes Specification of System, Principle of System, System Block Diagram, PCB Block
diagram, the explanation of each PCB Block Diagram, and Signal List. Gives the convenience of
grasping flow of major signals and mutual communication between units in the whole system.
SECTION 5SCHEMATICS
Gives the cable connection diagram including all cables used, the circuit diagram of PCB equipped
with switches, and the circuit diagram of TV monitor and Power Supply unit.

MN2‑0233
SECTION 1 How to use this service manual
1 ‑ 3
SECTION 6TROUBLESHOOTING
Describes precautions on actual repair work and shows the necessary tools and measuring
instruments. Also, includes many hints on primary diagnosis and measures to be taken in the field.
SECTION 7ADJUSTMENT PROCEDURE
Gives guides of adjustments of PCBs and units which some PCBs need when they are replaced.
SECTION 8PERFORMANCE CHECK
Describes the procedure of checking for proper operation after repair and provides the forms of
check sheet.
SECTION 9DISASSEMBLING PROCEDURE
Disassembling Procedure Illustrates the disassembly and assembly of main components. Be sure to
follow working procedures if specified.
SECTION 10 PARTS LIST
Lists the mechanical parts and electrical part which replacement possibility are considered .
SECTION 11 SERVICE INFORMATION
Provides available information about maintenance service.
APPENDIX SERVICE MANUAL Appendix
Manual change information, the revision list of this manual, is filed in this section.

MN2‑0233
SECTION 1 How to use this service manual
1 ‑ 4
( Blank page )

SECTION 2
SECTION 2
PRECAUTIONS

MN2‑0233
SECTION 2 PRECAUTIONS
2 ‑ 1
2-1 Precautions Against Electrical Hazards to Serviceman
When disassembling the equipment after checking it for a trouble symptom, give care to the
following:
1) Be sure to unplug the equipment before disassembly.
2) Be sure to turn off the main switch on the equipment when removing electrical parts such as
PCBs, probe, and cable.
3) Safety alert symbols
The indication used on this equipment and in this service manual have the following
meaning.
“Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury.”
“A caution message is inserted here.”
2-2 Precautions Against Mechanical Hazards to Serviceman
When disassembling the equipment, give care to the following to protect serviceman from
hazards :
1) Keep the working environment neat.
Wear working gloves to protect your hands from getting injured by burrs on the unit and
casing.
2) Use only proper tools suited to work being made.
3) Be sure to observe the specified disassembly procedure shown in SECTION 9.
4) Take sufficient care not to damage component with undue load.
2-3 Precautions Against Germ Hazards to Serviceman
1) When it is necessary to touch the equipment, options and/or other peripheral devices at a
customer who uses intracorporeal (transesophageal, transurethral, transvaginal, transrectal)
probes that need sterilization, take special care to protect your hands against germs,
irrespective of the usage of the equipment: whether it is used in the operation room or not.
2) Service tools are subject to germ pollution in hospitals and, therefore, need periodical
sterilization.
3) Be careful not to directly touch anything assumable to have germ pollution. If necessary, ask
the customer for effective protection against germs.

MN2‑0233
SECTION 2 PRECAUTIONS
2 ‑ 2
2-4 Precautions for Keeping Electrical Safety
1) Be sure to ground the equipment securely.
2) Perfectness in grounding, screw tightening, and cover installation is essential. Negligence of it
could cause a possibility of leakage current from outer fitting which may lead to serious
damage to a patient being diagnosed.
2-5 Precautions for Keeping Mechanical Safety
Take care to the following to prevent the equipment from being damaged or broken during
disassembly and reassembly work.
1) Be sure to observe the specified disassembly procedure.
2) Take care not to damage component parts by undue load.
3) When reassembling the equipment, carefully check every part for loosening, distortion and
creak.
4) Use only the specified screws and nuts. Using any other screws and/or nuts would affect not
only mechanical performance, but also electrical performance of the equipment.
2-6 Precautions for Keeping Chemicals Safety
Whenever grease, oil or other chemicals is used for maintenance service, options and/or
peripheral devices, be sure to clean the equipment and/or devices after service work.
2-7 Preparation to be Made at Service Center
1) When called by a customer on the telephone, note the followings:
lName of equipment
lSerial number of equipment
lName of hospital
lTelephone number
lName of person in charge
lDetail of trouble symptom as far as possible
lState of connection to optional devices
2) Go over the Technical Bulletinto see whether the complained trouble can be mended by
means of regular repairing method.

MN2‑0233
SECTION 2 PRECAUTIONS
2 ‑ 3
2-8 Care to be Taken in the Field
1) Check for trouble symptoms.
2) Check for connection to optional devices and other peripheral devices.
3) Record the preset data to a floppy disk.
When record in a lump the internal data such as the preset data, patient data, image data and
others, record them to an MO disk.
4) After working, restore the equipment according to the above mentioned contents of memory
if necessary.
5) After completion of work, put back the peripheral devices to the original condition.
2-9 Precaution for Monitor repairing
1) Subjecting the unit to strong shocks may result in damage to the CRT or malfunction, therefore
care must be taken when transporting or installing the unit.
2) CRT with the deflecting yoke is already adjusted to the best condition. Do not touch the
deflecting yoke and the magnet of the neck part.
3) Be sure to detach the metallic goods such as a wrist watch from your body before doing the
repair work.
To prevent the secondary damage and the electrical shock, the matters above should be taken
into careful consideration.
● DANGER ●High voltages are present inside the display chassis. Only
experienced technicians should touch internal parts.
● DANGER ● The electric charge has remained in CRT after the power switch is
turned off. Because the high voltage is usually used for CRT. So
make the electric charge escape with a grounding stick which is
connected to the ground of the chassis and through the resistance for
high voltage (Approx. 1MΩ) before removing the anode cap.
Some electric charge remains in CRT after escaping with a grounding
stick. Do not touch the metallic part of anode cap with bare hands,
when detaching the anode cap directly.

MN2‑0233 Rev.1
SECTION 2 PRECAUTIONS
2 ‑ 4
2-10 Handling of S.M.D. PCBs
It is an Aloka's policy that neither repair nor modification of PCBs used for S.M.D. is made in the
field as a rule because of the following reasons:
[REMARKS] PCB does not need repairing or modifying in the field as a rule.
When handling a PCB, do not touch the IC unless it is necessary.
IC soiled with worker’s hands may cause corrosion. Additionally, foreign particles such as fine
solder dust could be the cause of short-circuited IC lead wires whose pitch is smaller than that of
the traditional ones.
Do not give excessively large shocks to the PCB.
When replacing the ROM (Read Only Memory) on the PCB, attempting to force the ROM into its
socket would cause the PCB to be subjected to an undue force, and the following faults may :
1) Damage to PCB intermediate-layer patterns,
2) Peeling of chip devices (resistor, capacitor, diode, etc.)
3) Damage to a junction between electrode and internal element of chip devices,
4) Peeling of patterns (especially those for mounting the parts) together with chip devices since
those patterns are rather fragile compared with PCBs used before now, and
5) Damage to parts on the reverse side in the case of PCBs of both-side mounting type.
Also, a PCB mounted improperly or a warped PCB mounted as it is may cause the chip devices to
come off and the fine patterns to be cut.
Additionally, reuse of chip devices (including resistors, capacitors, diodes, etc.) is strictly
inhibited because of the following reason: Since the chip devices are lacking in lead wires, such
as those found in the traditional component parts, heat given to the PCB will be directly conducted
to the inside of chip devices. As a result, a thermal stress will occur due to a difference in thermal
expansion coefficient between each chip device and PCB, giving rise of the possibility of cracks
inside of or on the surface of chip devices or the possibility of thermal breaking (internal burning).
Very thin wiring patterns require extreme care in handling of the PCB
Be sure to observe the precautions mentioned above also to prevent the secondary accidents.
●CAUTION●When handling a PCB, avoid touching the IC and connector pins on the
devices to prevent ESD (Electro Static Discharge) damage.
A service person should preferably wear an ESD wrist strap correctly
grounded when handling a PCB.

MN2‑0233
SECTION 2 PRECAUTIONS
2 ‑ 5
2-11 System Symbols
Symbols used by Aloka are described below, together with reference to IEC publication(s).
No. Symbol IEC
publication Description
1417-5032 Alternating current
2
417-5019 Protective earth (ground)
When remove the grounding cable from the terminal
which is indicated with this symbol on this equipment, you
must reconnect it to proper terminal to avoid electrical
shock hazard
3417-5017 Earth (ground)
When remove the grounding cable from the terminal
which is indicated with this symbol on this equipment, you
must reconnect it to proper terminal to avoid electrical
shock hazard.
4417-5021 Equipotentiality
5348 Attention, consult ACCOMPANYING DOCUMENTS
6417-5008 Off (power : disconnection from the mains)
7417-5007 On (power : connection to the mains)
8878-02-03 TYPE BF EQUIPMENT
9878-03-01 Dangerous voltage

MN2‑0233 Rev.3
SECTION 2 PRECAUTIONS
2 ‑ 6
2-12 A combination of UCW-4000B and software version.
A steerable CW Doppler unit UCW-4000 was changed to UCW-4000B to apply Independent probe
connector unit EU-9094 (option). Therefore, please pay attention to the following points before
installation of UCW-4000B.
1) Both SCU-4000* and EU-9094 cannot install to SSD-4000 simultaneously. Because, the
Independent probe connector unit mounts to the same position of mechanical radial probe
connector.
2) UCW-4000B cannot apply to the systems of S/N. M00104 - M01100.
3) There is a difference of the setting of JP1in EP409200 by a combination of software version.
Software version UCW-4000/
UCW-4000B JP setting in the board MAINTENANCE、 SYSTEM1screen display
Ver1.0~3.0 UCW-4000 None Displays as UCW-4000.
Ver1.0~3.0 UCW-4000B Remove a jumper from JP1 in
EP490200 board. Displays as UCW-4000.
Ver3.1~ UCW-4000 None Displays as UCW-4000.
Ver3.1~ UCW-4000B Do not remove a jumper from
JP1 in EP490200 board. Displays as UCW-4000B.
2-13 A combination of SCU-4000/4000B and AD_DA “EP444400”/DBP “EP478400”board.
There is a possibility that SSD-4000 does not work correctly by a combination of SCU-
4000/4000B and AD_DA “EP444400”/DBP “EP478400”board. Therefore, please refer to the
following list for availability.
Board in SSD-4000 SCU-4000/4000B Status
AD_DA EP444400 SCU-4000 Available without problem
AD_DA EP444400 SCU-4000B Available without problem
DBP EP478400 SCU-4000 Not available
DBP EP478400 SCU-4000B Available without problem